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F15353
2-wire Real-time Clock
Release Date: Sep, 2008 Version: 0.12P
Fintek
Feature Integration Technology Inc.
F15353 F15353 Datasheet Revision History
Version 0.10P
Date Jan, 2008
Page Preliminary version
Revision History
Modify some contents in General Description 0.11P Jul, 2008 4 Current consumption spec changed to 0.55uA at 3.0V Add TSSOP-8 package for option 4 5 9
supply voltage as low as 1.2 1.1 V (min.) Add TSSOP-8 pin configuration Operating voltage 3.0 1.3V Input low voltage 0.6 0.4V
0.12P
Sep, 2008
12 19
Revise 6.4 description Add "Caution: The figure range which can be corrected is that the calculated value is from 0 to 62."
33 37
Remove redundant register 7.9-7.13 Figure 18: F15353S Application Circuit
Please note that all data and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this data sheet belong to their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Fintek for any damages resulting from such improper use or sales.
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F15353 Table of Contents
1 2 3 4
GENERAL DESCRIPTION ........................................................................................................................................................ 4 FEATURE ..................................................................................................................................................................................... 4 PIN CONFIGURATION .............................................................................................................................................................. 5 PIN DESCRIPTION..................................................................................................................................................................... 6 4.1. 4.2. 4.3. 4.4. POWER PIN ........................................................................................................................................................................... 6 CRYSTAL OSCILLATOR PIN .................................................................................................................................................... 6 INTERRUPT PIN ..................................................................................................................................................................... 6 I2C INTERFACE PIN............................................................................................................................................................... 7
5 6
ELECTRICAL CHARACTERISTIC......................................................................................................................................... 8 FUNCTIONAL DESCRIPTION ................................................................................................................................................. 9 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 POWER SUPPLY VOLTAGE DETECTOR ....................................................................................................................................... 9 POWER SUPPLY VOLTAGE DETECTOR ....................................................................................................................................... 9 REAL-TIME DATA ................................................................................................................................................................... 11 INVALID DATE AND END-OF-MONTH PROCESS ....................................................................................................................... 12 INTERRUPT FUNCTION ............................................................................................................................................................ 12 ALARM INTERRUPT FUNCTION ............................................................................................................................................... 18 CLOCK ADJUSTMENT FUNCTION ............................................................................................................................................ 19 I2C INTERFACE FUNCTION ..................................................................................................................................................... 20 DATA WRITING ....................................................................................................................................................................... 21 COMMUNICATION DATA CONFIGURATION ........................................................................................................................... 25
7
REGISTER DESCRIPTION (I2C ADDRESS = 0X6X).......................................................................................................... 26 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 STATUS REGISTER_1 ACCESS (COMMAND 000B).................................................................................................................... 26 STATUS REGISTER_2 ACCESS (COMMAND 001B).................................................................................................................... 27 REAL-TIME DATA 1 ACCESS, YEAR DATA (COMMAND 010B).................................................................................................. 28 REAL-TIME DATA 2 ACCESS, HOUR DATA (COMMAND 011B) ................................................................................................. 29 INT1 REGISTER_1 ACCESS (COMMAND 100B) ....................................................................................................................... 30 INT1 REGISTER_2 ACCESS (COMMAND 101B) ....................................................................................................................... 31 CLOCK ADJUSTMENT REGISTER ACCESS (COMMAND 110B) .................................................................................................. 32 FREE REGISTER ACCESS (COMMAND 111B)............................................................................................................................ 33
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8 9 ORDERING INFORMATION .................................................................................................................................................. 34 PACKAGE DIMENSIONS (8-SOP, 8-TSSOP)........................................................................................................................ 35
10 APPLICATION CIRCUIT ........................................................................................................................................................ 37
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1 General Description
The F15353 which is a low current consumption 2- wire CMOS real-time clock operates under 1.3V to 3.6V. The current consumption is only 0.55uA and operation voltage is 1.1V as time keeping. In a system that operates on a backup battery, the free register incorporated in the real-time clock can be used for the user backup memory function. The user register can hold data on a supply voltage as low as 1.1 V (min.), so the data stored in the register before the main power supply was removed and can be recalled any time after the power is reconnected. A clock adjustment function that enables wide range correction of deviation in the frequency of the crystal oscillator at a minimum resolution of 1 PPM is integrated in the F15353. The clock adjustment value can be set in accordance with changes in the temperature. It is possible to make the realization of clock function that retains a high degree of accuracy regardless of temperature variation by combining with a temperature sensor.
2 Feature
Low Current Consumption: 0.55uA, Typical (VDD = 3.0V, Ta = 25C) Operate Voltage Range: 1.3 to 3.6V Minimum Time Keeping Operation Voltage: 1.1V Built-in Clock Adjustment Function Built-in Free User Register Built-in Alarm Interrupt Built-in Flag Generator at Power down or Power on Built-in Constant Voltage Circuit Built-in 32KHz Crystal Oscillator Circuit (Cd Built-in, Cq External) Auto Calendar up to the Year 2099, Automatic Leap Year Calculation Function I2C Interface Powered by 3.3VCC and packaged in SOP-8 and TSSOP-8
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3 Pin Configuration
Figure1: F15353 SOP-8 pin configuration
Figure2: F15353 TSSOP-8 pin configuration
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4 Pin Description
P INst I/OD1ost - Power pins - TTL level input pin with schmitt trigger - TTL level bi-directional pin with schmitt trigger, Open-drain output with 10 mA sink capability at VDD=3.0V OD5 AIN AOUT - Output pin with 5mA sink capability at VDD=3.0V - Input pin (Analog). - Output pin (Analog).
4.1. Power Pin
Pin No. 4 8 Pin Name VSS VDD Type P P Description Ground Power supply pin
4.2. Crystal Oscillator Pin
Pin No. 2 3 Pin Name XOUT XIN Type AOUT AIN PWR VDD VDD Description Crystal oscillator connect pin, 32.768KHz Crystal oscillator connect pin, 32.768KHz
4.3. Interrupt Pin
Pin No.
Pin Name
Type
PWR
Description Interrupt 1 signal output pin. Depending on the mode set by
1
INT1#
OD5
VDD
INT1 register_1 and the status register, it outputs low or a clock when the time is reached. It is disabled by rewriting
the status register. Interrupt 2 signal output pin. Depending on the mode set by 5 INT2# OD5 VDD INT1 register_2 and the status register, it outputs low or clock when time is reached. It is disabled by rewriting the status register.
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4.4. I2C Interface Pin
Pin No. Pin Name Type PWR Serial clock input pin. Since the 6 SCL INst VDD rising/falling specifications. Serial data I/O pin. Normally, it is pulled up to the VDD voltage by a 7 SDA I/OD1ost VDD resistor and connected with another open-drain output open-collector output device via or time and comply strictly with the Description signal processing is done on
SCL signal rising/falling edge, give great care to the
a wired-OR connection.
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5 Electrical Characteristic
5.1 Absolute Maximum Ratings PARAMETER Power Supply Voltage Input Voltage Operating Temperature Storage Temperature RATING -0.3 to 3.6 -0.3 to VDD+0.3 0 to +70 -55 to 150 UNIT V V C C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device
5.2 DC Characteristics (Ta = 0 C to 70 C, VDD = 3.0V 10%, VSS = 0V) PARAMETER Operating Voltage Current Consumption 1 SYM. VDD IDD1 MIN. 1.3 TYP. 3.3 0.55 MAX. 3.6 0.93 UNIT V uA CONDITIONS
Out of communication During communication Current Consumption 2 IDD2 6 14 uA (SCL=100KHz) I/OD10st - TTL level and schmitt trigger bi-directional pin with 10 mA source-sink capability Input Low Voltage VIL 0.4 V Input High Voltage VIH 2.4 V Hysteresis 0.3 V Output Low Current IOL 5.0 10 mA VOL = 0.4V Input High Leakage ILIH -0.5 +0.5 A Input Low Leakage ILIL -0.5 +0.5 A OD5 - Output pin with 5mA sink capability Input Low Voltage VIL 0.4 V Input High Voltage VIH 2.4 V Hysteresis 0.3 V Output Low Current IOH 3.0 5.0 mA VOL = 0.4 V Input High Leakage ILIH -0.5 +0.5 A Input Low Leakage ILIL -0.5 +0.5 A INts - TTL level input pin and schmitt trigger Input Low Voltage VIL 0.4 V Input High Voltage VIH 2.4 V Hysteresis 0.3 V Input High Leakage ILIH +0.5 A Input Low Leakage ILIL -0.5 A
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6 Functional Description
6.1 Power Supply Voltage Detector Bit 7, POC flag, of status register_1 is set to 1 ("80h") by the power-on detector and an 1Hz clock is output from the INT1# pin. The oscillation frequency is adjustable. In the common condition, the F15353 must be initialized at power-on. Initialization is performed by setting "1" to bit 0, RESET flag, of the status register_1. After the initialization, the POC flag is set to "0". In the common operation of the power-on detector, the supply voltage is held at 0Vand then increasing it. The state of every register after initialization is as following:
Table 1: Initialization States of Register Real-time data register 00(year),01(month), 01(day), 0(day of week), 00(hour), 00(minute), 00(second) Status register_1 "0 0 0 0 b3 b2 b1 0"b (The b3, b2, and b1 data of status register_1 after initialization are set in b3, b2, b1) Status register_2 INT1# register_1 INT1# register_2 Clock adjustment register Free register "00"h "00"h "00"h "00"h "00"h
6.2 Power Supply Voltage Detector There is an internal power supply voltage detector, which monitors the power supply voltage drops by reading the BLD flag, in the F15353. If the power supply voltage drops under the detect voltage (typical 1.2v), the BLD latch circuit latches "H" level. Bit 6, BLD flag, of the internal status register_1 is set to "1", and the sampling is stopped. If the BLD flag is detected "1", the detection is stopped until the initialization is performed or the flag is read by the status register_1 access command, and "1" is held in the BLD flag. The resume condition of sampling operation is the subsequent communication action initialized or the BLD flag read only. If the BLD flag is "1" after the power supply voltage is recovered, it must be initialized additionally.
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Detection voltage Hysteresis width 0.15V approximately Release voltage
Status Register_1 Reading 1s Sampling Pluse Latch Circuit Output BLD flag (0) 1s Stop
(1)
(0)
Figure 3: Timing of power supply voltage detector
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6.3 Real-time Data The real-time data is stored in a 56-bit register in BCD code of year, month, day, day of week, hour, minute, and second data. The data from the LSB which is the first digit of the year is transmitted or received by read/write command performed by the real-time access.
MSB Y80 Y40 Y20 Y10 Y8 Y4 Y2
LSB Y1 Year data (00 to 99) auto calendar to 2099
0
0
0
M10
M8
M4
M2
M1
Month data (01 to 12) auto calendar feature with leap year
0
0
D20
D10
D8
D4
D2
D1
Day data (01 to 31)
0
0
0
0
0
W4
W2
W1
Day of week data (00 to 06) 00 represents Sunday.
0
AM/PM
H20
H10
H8
H4
H2
H1
Hour data (00 to 23 or 00 to 11)
0
m40
m20
m10
m8
m4
m2
m1
Minute data (00 to 59)
0
s40
S20
s10
s8
s4
s2
s1
Second data (00 to 59)
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6.4 Invalid Date Process When the real time data is written, the invalid data will be corrected immediately as Table 2. Table 2: Process of Invalid Date Register Year data Month data Day data Day of week data Hour data*1 (24-hour) (12-hour) Minute data Second data 0 to 23 0 to 11 00 to 59 00 to 59 24 to 29, 3X, XA to XF 12 to 19, 2X, 3X, XA to XF 60 to 79, XA to XF 60 to 79, XA to XF 00 00 00 00 Normal Data 00 to 99 01 to 12 01 to 31 0 to 6 Error Data XA to XF, AX to FX 00, 13 to 19, XA to XF 00, 32 to 39, XA to XF 7 Result 00 01 01 0
*1 For 12-hour expression, setting AM/PM flag, and the flag is ignored in 24-hour expression. "0" for 0 to 11 o'clock and "1" for 12 to 23 o'clock are read in a read operation.
6.5 Interrupt Function The INT1# pin output mode is selected by the INT1AE, INT1ME, and INT1FE flags of the status register02. The INT2# pin output mode is selected by the INT2AE, INT2ME, and INT2FE flags of the status register02, similarly.
6.5.1 Alarm Interrupt Output If the INT1# or INT2# pin output mode is set to the alarm setting, the INT1# or INT2# pin will pull low as the set data reached. The set data, the day of week, the hour, and the minute, are stored in INT1 register_1 (command 100b) or INT1 register_2 (command 101b). To Rewrite INT1AE or INT2AE of status register_2 to "0" will release the output from low to high.
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Ex:
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F15353
32kE=0, INT1ME=INT1FE=0 (INT1# pin output mode), INT2ME=INT2FE=0 (INT2# pin output mode) Alarm enable flag: In case of AxWE=AxHE=AxmE="1"
INT1# register_1/INT1# register_2 Mx Hx Wx
Comparator
Alarm Interrupt
Second
Minute
Hour
Week Real-time Data
Day
Month
Year
32kE=0, INT1ME=INT1FE=0 (INT1# pin output mode), INT2ME=INT2FE=0 (INT2# pin output mode) Alarm enable flag: In case of AxWE="0" AxHE=AxmE="1"
INT1# register_1/INT1# register_2 Mx Hx Wx
Comparator
Alarm Interrupt
Second
Minute
Hour
Week Real-time Data
Day
Month
Year
When set "H" Hour "m" minute
Real-time Data
Hh(m-1)m59s Change by the program
Hh00m00s
01s
59s
Hh(m+1)m00s
Change by the program
Change by the program
INT1AE/INT2AE Alarm time match INT1# pin/INT2# pin OFF *1
Alarm time match period
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32kE=0, INT1ME=INT1FE=0 (INT1# pin output mode), INT2ME=INT2FE=0 (INT2# pin output mode) Alarm enable flag: In case of AxWE=AxmE="0", AxHE="1"
INT1# register_1/INT1# register_2 Mx Hx Wx
Comparator
Alarm Interrupt
Second
Minute
Hour
Week Real-time Data
Day
Month
Year
When set "H" Hour
Real-time Data
Hh59m59s Change by the program
Hh00m00s
01s
59s
Hh01m00s
Hh59m59s
(H+1)h00m00s
Change by the program
Change by the program Change by the program
INT1AE/INT2AE Alarm time match INT1# pin/INT2# pin OFF *1 Alarm time match*2 *1 OFF
Alarm time match period
*1 Once it clears, even if it enables again within a coincidence period, "L" will not be output from an INT1# or INT2# pin. *2 "L" is output again from INT# pin at the time of change of the following part when an alarm output is turned on by change by the program within a coincidence period.
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6.5.2 Selected Frequency Steady Interrupt Output
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F15353
Set the status register_2 and the INT1# or INT2# pin output mode is set to the selected frequency steady interrupt output. The set clock output follows the frequency data set in INT1# register_1 or register_2.
Ex: 32kE=0, INT1ME=0, INT1AE=Don't care (0 or 1) INT2ME=0 INT2AE=Don't care (0 or 1)
Change by the program
INT1FE/INT2FE Free run output starts INT1# pin/INT2# pin OFF
Figure 4: Timing of Selected Frequency Steady Interrupt Output
6.5.3 Per-minute edge interrupt output If INT1# or INT2# pin output mode is set as the per-minute edge interrupt, INT1# or INT2# will pull low as the first minute carry is performed. Since the output is held, to rewrite 32kE, INT1AE, INT1ME, and INT1FE of the register_2 to "0" sets the output to high (OFF state) in INT1# pin output mode. IN INT2# mode, to rewrite INT2AE, INT2ME, and INT2FE of the register_2 to "0" or INT2AE of status register_2 to "0" will release the output from low to high. Ex: 32kE=0, INT1ME=0, INT1AE=Don't care (0 or 1) INT2ME=0 INT2AE=Don't care (0 or 1)
Change by the program
INT1ME/INT2ME Minute Carrying Processing
INT1# pin/INT2# pin
OFF
If the period is less than 123us, "L" signal is output
Figure 5: Timing of Per-minute Edge Interrupt Output
6.5.4 Per-minute steady interrupt output1
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If INT1# or INT2# pin output mode is set as the per-minute steady interrupt, INT1# or INT2# will pull low as the first minute carry is performed. The data is set in register_2. A whole cycle of clock is 1 minute (50% duty) is output from INT1# or INT2# pin.
Ex: 32kE=0, INT1AE=0 (INT1# pin output mode) INT2AE=0 (INT2# pin output mode)
Change by the program (OFF)
INT1ME, INTFE/ INT2ME, INT2FE Minute Carrying Processing
Minute Carrying Processing
INT1# pin/INT2# pin
30s
30s
30s
30s
30s
30s
30s
30s
If the period is less than 123us, "L" signal is output
If the period is more than123us, "H" signal is output. "L" signal is output
Figure 6: Timing of Pre-minute Steady Interrupt Output1
6.5.5 Per-minute steady interrupt output2 (INT1# pin output mode only) If INT1# or INT2# pin output mode is set as the per-minute steady interrupt, INT1# will pull low as the first minute carry is performed. The output is the period of 7.9ms in synchronization with the minute carry processing inside the IC. However, when real-time data is read, the minute carry processing is delayed by a maximum of 0.5 s and accordingly low output from the INT1# pin is also delayed by 0.5s maximum. When the second data is rewritten by a real-time data write command, counting starts from the rewritten second data and as a result, the output interval during that period may become either longer or shorter.
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6.5.5.1 During Normal Operation
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F15353
Minute Carrying Processing
INT1# pin
7.9ms 60s
7.9ms 60s
7.9ms
6.5.5.2 During Real-time Data Read
Minute Carrying Processing Normal Minute Carrying Processing
INT1# pin 0.5s max 7.9ms 60s I2C Communication 7.9ms 60s 7.9ms (60-x)s
Real-time data read command
Real-time data read command Real-time data reading
Real-time data write command Real-time data writing (X s)
Real-time data reading
Figure 7: Time of Pre-minute Steady Interrupt Output2
Caution: 1. If Per-minute edge interrupt output mode or Per-minute steady interrupt mode is chosen, there is no difference between INT1 register_1 register_2. 2. When the output mode is changed, take care to the state of INT1 regisert_1 or register_2 and the output
6.5.6 During Power-on Detector Operation When power is applied to this IC, power-on detection circuit operates, status register_1 is set to "80h" (bit 7 (POC flag) of status register_1 is set to 1) via the power-on detection circuit, and a 1 Hz clock is output from the INT1# pin.
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Ex: INT2AE=INT2ME=INT2FE=32kE=INT1AE=INT1ME=0
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Change by reset command
INT1FE
INT1# pin
OFF
0.5s 0.5s
Figure 8: INT1# pin output Timing During Power-on Detector Operation
6.6 Alarm Interrupt Function Data set in INT1 register_1 and register_2 is considered as alarm time data. There is the same configuration as the hour and minute registers of the real-time data register. These registers represent hours and minutes with BCD codes. Set data must fit the date rule which is in accordance with the 12-hour or 24-hour expression that is set in status register_1.
INT1 register_1 MSB A1WE 0 0 0 0 W4 W2 LSB W1
A1HE
AM/PM
H20
H10
H8
H4
H2
H1
A1mE
m40
m20
m10
m8
m4
m2
m1
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INT1 register_2 MSB A2WE 0 0 0 0 W4 W2 LSB W1
A2HE
AM/PM
H20
H10
H8
H4
H2
H1
A2mE
m40
m20
m10
m8
m4
m2
m1
In INT1 register_1 or register_2, A1WE/A2WE, A1HE/A2HE, and A1mE/A1mE are respectively in MSB of the day of week data, hour data, and minute data by setting "1" . 6.7 Clock Adjustment Function A clock adjustment function is provided to logically perform slow/fast adjustment of the 32KHz clock and correct a slow/fast clock with high accuracy. Use the clock adjustment register to set this function. Write "00h" to disable the function. The clock adjustment register value is calculated by the following expression. 6.7.1 Current Frequency > Target Frequency
Re gister _ value *1 = Current _ oscillatoin _ frequency *2 - T arg et _ oscillation _ frquency *3 acutal _ measurement _ value 128 - Integral _ value Current _ oscillation _ frequency Minimum _ resolution *4 *2 actual _ measurement _ value
Caution: The figure range which can be corrected is that the calculated value is from 0 to 64. Note: *1. The register value is the value set to the clock adjustment register. Set the binary value of this value to the clock adjustment register. *2. This is the measurement value of the signal that is output to the INT1# or INT2# pin when the 1 Hz clock output setting is: 32kE = 0, INT1ME = 0, INT1FE = 1, INT1# register_1 is 01h (for the INT1# pin) INT2ME = 0, INT2FE = 1, INT1# register_2 is 01h (for the INT2 pin) *3. This is the frequency to be adjusted by using the clock adjustment function. *4. For the minimum resolution, 3.052ppm or 1.017ppm can be set using bit7 of the clock adjustment register. When bit7 is 0, 3.052ppm is set and logical slow/fast adjustment is performed every 20 seconds. When bit7 is 1, 1.017pm is set and logical slow/fast adjustment is performed every 60
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seconds.
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F15353
0 Slow/fast Adjustment Minimum Resolution Correction Range Every 20 seconds 3.052ppm -195.3 to +195.3ppm
1 Every 60 seconds 1.017ppm -65.1 to +64.1ppm
6.7.2 Current Oscillator Frequency < Target Frequency
Re gister _ value = Current _ oscillator _ frequency - actual _ measurement _ value (T arg et _ oscillatoin _ frequency) Integral _ value (Current _ oscillation _ frequency) x ( Minimum _ resolution)
Caution: The figure range which can be corrected is that the calculated value is from 0 to 62.
6.8 I2C Interface Function The F15353 receives various commands via an I2C interface to read/write data.
6.8.1
Start Condition
The start condition is established at the point where the SDA line changes from "H" to "L" when the SCL line is "H" level. All operations start with the start condition.
6.8.2 Stop Condition The stop condition is established at the point where the SDA line changes from "L" to "H" when the SCL line is "H" level. If the stop condition is received during a readout sequence, the read operation is discontinued and the device enters the standby mode.
6.8.3 Data Transfer Data transfer is performed by changing the SDA line during the period that the SCL line is "L". If the SDA line changes during the period a n d the SCL line is "H", it is recognized as the start or stop condition.
6.8.4 Acknowledge Data is transferred 8 bits in a row. Subsequently, in the 9th clock cycle period, the device on the system bus that is receiving the data changes the SDA line to "L" and returns the acknowledge signal to acknowledge data
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reception.
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6.8.5 Data Reading After detecting the start condition from outside, a device code and command are received. If the read/write bit is "1" at this point, the data read mode is entered. The data output sequence is output from the LSB.
t
SCL
t t R
R
SCL
t HD;STA
t HD;DAT t t SU;DAT SU;STO
SDA IN VALID DATA
t DEL;DAT
SDA OUT
Serial Bus Timing Diagram
Figure 9: I2C timing chart
Table 3: Serial Bus Timing
PARAMETER SCL clock period Start condition hold time Stop condition setup-up time DATA to SCL setup time DATA to SCL hold time DATA OUT to SCL delay time SCL and SDA rise time SCL and SDA fall time SYMBOL t-SCL tHD;SDA tSU;STO tSU;DAT tHD;DAT tDEL:DATA tR tF MIN 3 50 50 50 5 200 200 200 MAX UNIT uS nS nS nS nS ns nS nS
6.9 Data Writing After detecting the start condition from outside, a device code and command are received. If the read/write bit is "0" at this point, the real-time data write mode or another register write mode is entered.
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6.9.1 Real-time Data Access1
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SCL
R/W SDA S T A R T 0 11 00 1 0 A C K LSB Year Data MSB A C K *2 LSB Second Data MSB A C K *1 S T O P
LSB Command
MSB
IO Mode Switching
Figure 10: Real-time data access 1 *1 During reading, set NO_ACK to 1 *2 During reading, transmit ACK=0 to F15353 from the master device
6.9.2 Real-time Data Access1
1 9 36
SCL
R/W SDA S T A R T 0 11 00 1 1 A C K LSB Hour Data MSB A C K *2 LSB Second Data MSB A C K *1 S T O P
LSB Command
MSB
IO Mode Switching
Figure 11: Real-time data access 2
*1 Set NO_ACK to 1 during reading *2 Transmit ACK=0 to F15353 from the master device during reading
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6.9.3 Status Register_1 Access and Status Register_2 Access
1 9 18
SCL
R/W SD A S T A R T 0 11 000 *1 A C K LSB Status Data MSB A C K *2 S T O P
LSB Command
MSB
IO Mode Switching
Figure 12: Status register_1 access and status register_2 access
*1 0: Status Register_1 selected, 1: Status Register_2 selected *2 Set NO_ACK to 1 during reading
6.9.4 INT1# Register_1 Access and INT1# Register_2 Access
1 9 36
SCL
R/W SDA S T A R T 0 1101 0 *1 A C K LSB Day of Week Data MSB A C K *3 LSB Minute Data MSB A C K *2 S T O P
LSB Command
MSB
IO Mode Switching
Figure 13: INT1 register_1 access and INT1 register_2 access
*1 0: Status Register_1 selected, 1: Status Register_2 selected *2 Set NO_ACK to 1 during reading
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*3 Transmit ACK=0 to F15353 from the master device during reading
1
9
18
SCL
R/W SDA S T A R T 0 1101 0 *1 A CK A CK *1 LSB Status Data MSB S T O P
LSB Command
MSB
IO Mode Switching
Figure 14: INT1 register_1 access and INT1 register_2 (frequency duty data) access
*1 0: Status Register_1 selected, 1: Status Register_2 selected *2 Set NO_ACK to 1 during reading
6.9.5 Clock Adjustment Register Access
1
9
18
SCL
R/W SD A S T A R T 0 11 0 11 0 A C K LSB MSB A C K *1 S T O P
LSB Command
MSB
Clock Adjustment Data
IO Mode Switching
Figure 15: Clock adjustment register access *1 Set NO_ACK to 1 during reading,
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6.9.6 Free Register Access
1 9 18
SCL
R/W SDA S T A R T 0 11 0 11 1 A C K LSB Free Register Data MSB A C K *1 S T O P
LSB Command
MSB
IO Mode Switching
Figure 16: Free register access
*1 Set NO_ACK to 1 during reading,
6.10
Communication Data Configuration
The master device on the system generates a start condition to the slave device to communicate. Then it transmits a 4-bit device address, 3-bit command, and 1-bit read/write command on the SDA bus. The higher 4 bits that indicate the device address are called the device code and are fixed to "0110".
Device Code 0 1 1 0
Command Code C2 C1 C0
Read/Write bit R/W
Acknowledge bit ACK
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F15353
7 Register Description (I2C Address = 0x6x)
7.1 Status Register_1 Access (Command 000b)
Bit Name R/W Default Description
This flag is set to "1" at power-on. Once this flag is set to "1", it is not set to "0" even when the power supply voltage reaches or exceeds the detection
7 POC R -
voltage (VDET). This flag is read by the status register_1 access command. It is read-only and read-clear. initialized. If the power supply voltage detector detects a voltage of detection voltage (VDET) or less this flag is set to "1", which enables the detection of a power supply voltage drop. Once this flag is set to "1", it is not set to "0" When the flag is "1", it must be
6
BLD
R
-
even when the power supply voltage reaches or exceeds the detection voltage (VDET). This flag is read by the status register_1 access command. It is read-only and read-clear. When the flag is "1", it must be initialized. When the interrupt signal is output from the INT1# pin. The INT2# flag is
5
INT2#
R
-
set to "1", and uses the alarm interrupt function for an interrupt signal output from the INT2# pin. When the interrupt signal is output from the INT1# pin. The INT1# flag is
4
INT1#
R
-
set to "1", and uses the alarm interrupt function for an interrupt signal output from the INT1# pin. These flags configure a 2-bit SRAM type register that can be freely set by
3
SC1
R/W
-
users. They are read and written within the operating voltage range (1.3 to 3.0 V). These flags configure a 2-bit SRAM type register that can be freely set by
2
SC0
R/W
-
users. They are read and written within the operating voltage range (1.3 to 3.0 V). This flag is used to set 12-hour or 24-hour expression.
1
12/24
R/W
-
0: 12-hour expression 1: 24-hour expression By setting this bit to "1", the internal IC is initialized. This is a
0
RESET
W
-
write-only bit and is always "0" when it is read. Be sure to write "1" to the reset flag when applying the power supply voltage to the IC.
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7.2 Status Register_2 Access (Command 001b)
Bit Name R/W Default
Feature Integration Technology Inc.
F15353
Description
The TEST flag is a bit for testing the F15353. If the TEST flag is set to "1",
7 TEST R/W -
the F15353 is switched to the TEST mode. If this flag is "1", it is necessary to initialize it to "0" by setting the reset flag of status register_1 to "1". These flags are used to select the output mode from the INT2# pin. Mode
6
INT2#AE
R/W
-
selections are shown below. In order to use the alarm 2 function. After setting the alarm interrupt mode, accessing INT2# register_1. INT2#AE INT2#M 0 0 1 1 0 INT2#FE 0 1 0 1 0 INT2# Pin Output Mode No interrupt Selected frequency steady interrupt Pre-minute steady interrupt Pre-minute steady interrupt 1 (50%) Alarm interrupt
5
INT2#ME
R/W
-
0 1 1 1
4
INT2#FE
R/W
-
1
These flags are used to select the output mode from the INT1# pin. Mode
3 32KE R/W -
selections are shown below. In order to use the alarm 1 function. After setting the alarm interrupt mode, accessing INT1# register_1. 32KE 0 INT1#AE 0 1 1 1 0 1 1 INT1#M 0 1 0 1 1 0 1 INT1#FE 0 1 1 0 1 0 1 INT1# Pin Output Mode No interrupt 32KHz output Selected frequency steady interrupt Pre-minute edge interrupt Pre-minute edge1 interrupt (50%) Alarm interrupt Pre-minute edge2 interrupt (50%)
2
INT1#AE
R/W
-
1 0 0
1
INT1#ME
R/W
-
0 0 0
INT1#FE R/W
-
0
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7.3 Real-time Data 1 Access, Year Data (Command 010b)
Bit 7 Name Y80 Y40 R/W Default R -
Feature Integration Technology Inc.
F15353
Description
Refer to bit 6. Year data (00 to 99). Set the lower 2 digitals of the Western Calendar Year (00 to 99) and links together with the auto calendar feature until 2099. For a 12-hour expression, write 0 and 1 for AM and PM, respectively. For a
6
AMPM
R/W
-
24-hour expression, either 0 or 1 can be written. 0 is read when the hour data is from 00 to 11, and 1 is read when from 12 to 23.
m40 s40 Y20 D20 5 H20 m20 R/W -
Minute data (00 to 59) Second data (0 to 59). Refer to bit 6. Day data (1 to 31) Hour data (00 to 23 or 00 to 11) Refer to bit 6.
s20 Y10
Refer to bit 6. Month data (01 to 12). The count value is automatically changed by the auto calendar feature. 1 to 31: 31-day months (1, 3, 5, 7, 8, 10, 12)
M10
1 to 30: 30-day months (4, 6, 9. 11)
4 R/W -
1 to 29: 29-day months (2, leap year) 1 to 28: 28-day months (2, common year)
D10 H10
Refer to bit 5.
m10 s10 Y8 M8 D8 3 H8 m8 s8 2 Y4 M4 D4 R/W R/W -
Refer to bit 4.
Refer to bit 4.
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Day of week data (00 to 06)
W4
A septenary counter. Set it so that it corresponds to the day of the week.
H4 m4 s4 Y2 M2 D2 1 W2 H2 m2 s2 R -
Refer to bit 4.
Refer to bit 2
Y1 M1 D1 0 W1 H1 m1 s1 R Refer to bit 2
7.4 Real-time Data 2 Access, Hour Data (Command 011b)
Bit 7 Name R/W Default Description
Reserved For a 12-hour expression, write 0 and 1 for AM and PM, respectively. For a
AMPM 6 m40 s40 H20 5 m20 s20 H10 4 m10 s10 R/W R/W -
24-hour expression, either 0 or 1 can be written. 0 is read when the hour data is from 00 to 11, and 1 is read when from 12 to 23. Minute data (00 to 59) Second data (0 to 59). Hour data (00 to 23 or 00 to 11) Refer to bit 6.
Refer to bit 5.
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H8 3 m8 s8 H4 2 m4 s4 H2 1 m2 s2 R/W R/W R/W -
Feature Integration Technology Inc.
F15353
Refer to bit 5.
Refer to bit 5.
Refer to bit 5
H1 0 m1 s1 R/W Refer to bit 5
7.5 INT1 Register_1 Access (Command 100b) Alarm Time1, INT1AE=0, INT1FE=0, INT2FE=0
Bit Name A1WE 7 A1HE A1mE R/W R/W Default Description
A1WE, A1HE, and A1mE are respectively in the MSB of each byte. By setting every bit to "1", the setting of the day of week data, hour data, and minute data in the corresponding bye becomes valid. For a 12-hour expression, write 0 and 1 for AM and PM, respectively. For a
AM/PM 6 m40 H20 5 m20 H10 4 m10 H8 3 m8 R/W R/W R/W R/W
24-hour expression, either 0 or 1 can be written. 0 is read when the hour data is from 00 to 11, and 1 is read when from 12 to 23. Minute data (00 to 59) Hour data (00 to 23 or 00 to 11) Minute data (00 to 59) Refer to bit 5.
Refer to bit 5. Day of week data (00 to 06)
W4
A septenary counter. Set it so that it corresponds to the day of the week.
2 H4 m4 1 W2 R/W R/W -
Refer to bit 5. Refer to bit 2
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H2 m2
Feature Integration Technology Inc.
F15353
W1 0 H1 m1 R/W Refer to bit 1.
Frequency Mode (INT1ME=0, INT1FE=1)
Bit Name R/W Default Description
Data set in INT1 register_1 is considered as frequency duty data. By settin each bit from bit[4:0] of the register to "1", the frequency corresponding each bit is selected in an ANDed form. The SC bits configure a 3-bit SRAM
7:5 SC R/W -
type register that can be set freely by users. These bits can be read an written within the operating voltage range (1.3 to 3.0 V). There is no impac on the duty function
4 3 2 1
16Hz 8Hz 4Hz 2Hz
R/W R/W R/W R/W
-
Write 1 to set frequency to 16Hz Write 1 to set frequency to 8Hz Write 1 to set frequency to 4Hz Write 1 to set frequency to 2Hz Write 1 to set frequency to 1Hz
0
1Hz
R/W
-
7.6 INT1 Register_2 Access (Command 101b) Alarm Time2, INT2AE=0, INT2FE=0, INT2FE=0
Bit Name A2WE 7 A2HE A2mE R/W R/W Default Description
A2WE, A2HE, and A2mE are respectively in the MSB of each byte. By setting every bit to "1", the setting of the day of week data, hour data, and minute data in the corresponding bye becomes valid. For a 12-hour expression, write 0 and 1 for AM and PM, respectively. For a
AM/PM 6 m40 H20 5 m20 H10 4 m10 R/W R/W R/W
24-hour expression, either 0 or 1 can be written. 0 is read when the hour data is from 00 to 11, and 1 is read when from 12 to 23. Minute data (00 to 59) Hour data (00 to 23 or 00 to 11) Minute data (00 to 59) Refer to bit 5.
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H8 m8
Feature Integration Technology Inc.
F15353
3 R/W -
Refer to bit 5. Day of week data (00 to 06)
W4
A septenary counter. Set it so that it corresponds to the day of the week.
2 H4 m4 W2 1 H2 m2 R/W R/W -
Refer to bit 5.
Refer to bit 2
W1 0 H1 m1 R/W Refer to bit 1.
Frequency Mode (INT2ME=0, INT2FE=1)
Bit Name R/W Default Description
Data set in INT1 register_2 is considered as frequency duty data. By setting each bit from bit[4:0] of the register to "1", the frequency corresponding to each bit is selected in an ANDed form. The SC bit
7:5 SC R/W -
configure a 3-bit SRAM type register that can be set freely by users. These bits can be read and written within the operating voltage range (1.3 to 3.0 V). There is no impact on the duty function
4 3 2 1
16Hz 8Hz 4Hz 2Hz
R/W R/W R/W R/W
-
Write 1 to set frequency to 16Hz Write 1 to set frequency to 8Hz Write 1 to set frequency to 4Hz Write 1 to set frequency to 2Hz Write 1 to set frequency to 1Hz
0
1Hz
R/W
-
7.7 Clock Adjustment Register Access (Command 110b)
Bit 7 6 5 4 3 2 Name V7 V6 V5 V4 V3 V2 R/W Default R/W R/W R/W R/W R/W R/W Description
The clock adjustment register is a 1-byte register that is used to logically correct real-time data. When not using the clock adjustment register, set this register to 00h using the clock adjustment register write command.
-
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1 V1 R/W -
Feature Integration Technology Inc.
F15353
0 V0 R/W -
7.8 Free Register Access (Command 111b)
Bit 7 6 5 4 3 2 1 Name F7 F6 F5 F4 F3 F2 F1 R/W Default R/W R/W R/W R/W R/W R/W R/W Description
-
The free register is a 1-byte SRAM type register that can be set freely b users. It can be read and written within the operating voltage range (1.3 t 3.0 V).
0
F0
R/W
-
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F15353
8
Ordering Information
Part Number F15353S F15353G Package Type 8-SOP (Green Package) 8-TSSOP (Green Package) Production Flow Commercial, 0C to +70C Commercial, 0C to +70C
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F15353
9 Package Dimensions (8-SOP, 8-TSSOP)
Figure 17: 8 Pin SOP Package Diagram
Figure 18: 8 Pin TSSOP Package Diagram
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Fintek
Feature Integration Technology Inc.
F15353
Feature Integration Technology Inc.
Headquarters 3F-7, No 36, Tai Yuan St., Chupei City, Hsinchu, Taiwan 302, R.O.C. TEL : 886-3-5600168 FAX : 886-3-5600166 www: http://www.fintek.com.tw
Taipei Office Bldg. K4, 7F, No.700, Chung Cheng Rd., Chungho City, Taipei, Taiwan 235, R.O.C. TEL : 866-2-8227-8027 FAX : 866-2-8227-8037
Please note that all datasheet and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this datasheet belong to their respective owner
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10 Application Circuit
Figure 19: F15353 Application Circuit
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