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HT16515 1/4 to 1/12 Duty VFD Controller
Features
* Logic voltage: 3.0V~5.5V * High-voltage output: VDD-35V max. * Multiple display * 4 LED output ports * No external resistors necessary for driver output
(16-segment & 12-digit to 24-segment & 4-digit)
* 162 matrix key scanning * 8 steps dimmer circuit
(provides PMOS open-drain and pull-low resistor output)
* Serial interface with MCU (CLK, CS, DI, DO) * 44-pin QFP/LQFP packages
Applications
* Consumer products panel function control * Industrial measuring instrument panel function control * Other similar applications for panel function control
General Description
HT16515 is a VFD (Vacuum Fluorescent Display) controller/driver that is driven on a 1/4 to 1/12 duty factor. It consists of 16 segment output lines, 4 grid output lines, 8 segment/grid output drive lines, 4 LED output ports, a control circuit, a display memory, and a key scan circuit. Serial data inputs to the HT16515 through a three-line serial interface. This VFD controller/driver is an ideal MCU peripheral device.
Block Diagram
C om m and D ecoder S e r ia l I/F S e g 1 /K S 1 S e g 1 6 /K S 1 6
DI DO CLK CS
D is p la y R A M 2 4 - B it 1 2 W o r d s
2 4 - B it O u tp u t L a tc h
24 8
16
Segm ent D r iv e r
OSC
OSC
T im in g G e n e r a to r K ey S can K e y D a ta M e m o ry (2 1 6 )
D a ta S e le c to r 8 12 4 D im m in g C ir c u it
8
M u ltip le x e d D r iv e r
S e g 1 7 /G r id 1 2 S e g 2 4 /G r id 5
1 2 - B it S h ift R e g is te r
K ey0~K ey1 4 - B it L a tc h
G r id D r iv e r
G r id 1 G r id 4
LED0~LED3
VDD
VSS
VEE
Rev. 1.70
1
May 7, 2010
HT16515
Pin Assignment
S e g 1 7 /G r id 1 2 S e g 1 8 /G r id 1 1 S e g 1 9 /G r id 1 0 34 9 8 7 6 35 36 37 38 39 40 2 1 D S 41 42 43 44 1 2 3 4 5 6 7 8 9 10 11 KEY0 H T16515 4 4 Q F P -A /L Q F P -A Seg Seg Seg Seg Seg Seg 1 1 /K 1 2 /K 1 3 /K 1 4 /K 1 5 /K 1 6 /K S1 S1 S1 S1 S1 S1 VE E 6 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 S e g 9 /K S 9 S e g 8 /K S 8 S e g 7 /K S 7 S e g 6 /K S 6 Seg Seg Seg Seg Seg VDD VSS 5 /K 4 /K 3 /K 2 /K 1 /K S5 S4 S3 S2 S1 5 4 3 2 1 S e g 1 0 /K S 1 0
Seg Seg Seg Seg
2 0 /G 2 1 /G 2 2 /G 2 3 /G
r id r id r id r id
S e g 2 4 /G r id 5 G r id 4 G r id 3 G r id G r id VD VS
CS CLK DI DO OSC LED LED LED LED 0 1 2 3
KEY1
Pad Assignment
S e g 2 4 /G r id 5 S e g 2 3 /G r id 6 S e g 2 2 /G r id 7 S e g 2 1 /G r id 8 S e g 2 0 /G r id 9
G r id 1
G r id 2
G r id 3
G r id 4
VDD
VSS 44 LED0 LED1 LED2 LED3 4 2 3 1
33 43 42 41 40 39 38 37 36 35 34
S e g 1 9 /G r id 1 0
32
S e g 1 8 /G r id 1 1
31 (0 ,0 ) OSC 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 DO DI CLK CS KEY0 KEY1 30 29 28 27 26 25 24 23
S e g 1 7 /G r id 1 2 VEE S e g 1 6 /K S 1 6 S e g 1 5 /K S 1 5 S e g 1 4 /K S 1 4 S e g 1 3 /K S 1 3 S e g 1 2 /K S 1 2 S e g 1 1 /K S 1 1 S e g 1 0 /K S 1 0
* The IC substrate should be connected to VSS in the PCB layout artwork.
VSS
VDD
S e g 1 /K S 1
Chip Size: 2335mm 1855mm
S e g 2 /K S 2
S e g 3 /K S 3
S e g 4 /K S 4
S e g 5 /K S 5
S e g 6 /K S 6
S e g 7 /K S 7
S e g 8 /K S 8
S e g 9 /K S 9
Rev. 1.70
2
May 7, 2010
HT16515
Pad Coordinates
Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 X -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -689.60 -460.45 -344.25 -242.85 -141.45 -40.05 61.35 162.75 264.15 365.55 466.95 Y 600.00 495.00 380.20 275.20 -107.20 -235.60 -366.00 -471.00 -576.00 -681.00 -786.00 -772.45 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 Pad No. 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 X 834.10 834.10 834.10 834.10 834.10 834.10 834.10 987.30 987.30 987.30 987.30 610.30 508.90 407.50 306.10 204.70 103.30 1.90 -99.50 -200.90 -317.10 -624.50 Y -754.00 -652.60 -551.20 -449.80 -348.40 -247.00 -145.60 0.50 130.50 382.05 734.05 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 756.80 Unit: mm
Pin Description
Pin No. 1~4 5 6 7 8 Pin Name LED3~LED0 OSC DO DI CLK I/O O I O I I Description LED driver output ports. This is a CMOS output pin and maximum driving current up to +20mA. Connected to an external resistor or an RC oscillator circuit. Data output pin, output serial data at falling edge of shift clock, starting from the lower bit. This is N-ch open-drain output pin. Data input pin, input serial data at rising edge of shift clock, starting from the lower bit. Clock input pin. Reads serial data at the rising edge, and outputs data at the falling edge. Initializes serial interface at the rising or falling edge of the HT16515. Then it waits to receive a command. Data input after CS has fallen is processed, current processing is stopped, and the serial interface is initialized. While CS is high, CLK is ignored. Key-in data input to these pins are latched at the end of the display cycle. Negative power supply, ground Positive power supply High voltage output, segment output pins, dual function as key source. This is PMOS open-drain and pull-low resistor output. VFD power supply High voltage output, these pins are selectable for segment or grid output. This is PMOS open-drain and pull-low resistor output. High voltage output, grids output pin. This is PMOS open-drain and pull-low resistor output.
9
CS
I
10, 11 12, 44 13, 43 14~29 30 31~38 39~42
Key0, Key1 VSS VDD Seg1/KS1~Seg16/KS16 VEE Seg17/Grid12~ Seg24/Grid5 Grid4~Grid1
I 3/4 3/4 O 3/4 O O
Rev. 1.70
3
May 7, 2010
HT16515
Approximate Internal Connections
NMOS OUT
PMOS OUT
V
DD
CMOS OUT
V
DD
V
EE
Absolute Maximum Ratings
Supply Voltage ...........................VSS-0.3V to VSS+6.0V Input Voltage..............................VSS-0.3V to VDD+0.3V Operating Temperature...........................-25C to 75C Storage Temperature ............................-50C to 125C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
D.C. Characteristics
Symbol Parameter Test Conditions VDD 3.3V 5V 3/4 3.3V 5V 3.3V 5V ROSC=82kW Conditions 3/4 3/4 Min. 3 4.5 0 350
Ta=25C, VEE=VDD-35V Typ. 3.3 5 3/4 500 Max. 3.6 5.5 VDD-35 650 Unit V V V kHz
VDD VEE fOSC RPL
Logic Supply Voltage VFD Supply Voltage Oscillation Frequency
Output Pull-low Resistor
Driver output
40 3/4 3/4 -5 -10 10 20 3/4 3/4 3/4 3/4 3/4 3/4 2 4 3/4 0.7VDD
65 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
120 3
kW
IDD
Operating Current
3.3V No load, VFD display off, 5V data output =00H 3.3V VO=VDD-35V, VFD driver off
mA 5 5 10 3/4 3/4 -1.5 -3 -1.5 -3 -7.5 -15 3/4 3/4 VDD mA
IOL
Driver Leakage Current 5V 3.3V LED Sink Current 5V 3.3V LED Source Current 5V 3.3V Segment 1~16 Source Current 5V Segment 17~24, Grid 1~4 Source Current DO Sink Current 5V H Input Voltage 3/4 3.3V 5V 3.3V
IOL1
VOL=1V, LED0~LED3
mA
IOH1
VOH=0.9VDD, LED0~LED3
mA
IOH21
VOH=VDD-2V VOH=VDD-2V
mA
IOH22
mA
IOL3 VIH
VOL=0.4V
mA V
Rev. 1.70
4
May 7, 2010
HT16515
Symbol VIL VH Parameter L Input Voltage Hysteresis Voltage 5V High-level Output Voltage Test Conditions VDD 3/4 3.3V CLK, DIN, CS Conditions 3/4 Min. 0 3/4 3/4 0.9VDD Typ. 3/4 0.17 0.35 3/4 3/4 3/4 Max. 0.3VDD 3/4 3/4 VDD Unit V V
VOH1
3.3V LED0~LED3, IOH1=-1.5mA 5V LED0~LED3, IOH1=-3mA LED0~LED3, IOL1=20mA DO, IOL2=4mA
V
VOL1 VOL2
Low-level Output Voltage
3.3V LED0~LED3, IOL1=10mA 5V 3.3V DO, IOL2=2mA 5V
0
1
V
Low-level Output Voltage
0
0.4
V
A.C. Characteristics
Symbol Parameter Test Conditions VDD 3.3V Logic Supply Voltage tPLH 5V CLK(R)DO 3.3V CL=15pF, RL=10kW 5V 3.3V 5V Rise Time tr2 3.3V C =300pF, G1~G4 L 5V S17/G12~S24/G5 3.3V Fall Time 5V 3.3V Clock Frequency 5V Input Capacitance 3.3V 5V 3.3V Clock Pulse Width 5V 3.3V Strobe Pulse Width 5V 3.3V Data Setup Time 5V 3.3V Data Hold Time 5V Clock-Strobe Time 3/4 3/4 3/4 3/4 3/4 Duty=50% CL=300pF, Sn, Gn CL=300pF, S1~S16 Conditions Min. 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 800 400 2 1 200 100 200 100 2 1 2 1 Typ. 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Max. 600 300
Ta=25C Unit
tPHL
ns 600 300 4 2 1 0.5 240 120 0.5 MHz 1.0 15 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 pF ms ms
tr1
tf
fCLK
Ci
tCW
ns
tSW
us
tSU
ns
th
ns
tCS
3.3V CLK rising edge to CS rising 5V edge 3.3V CLK rising edge to CLK falling 5V edge
ms ms
tW
Wait Time
Rev. 1.70
5
May 7, 2010
HT16515
Functional Description
Display RAM and Display Mode The static display RAM stores the data transmitted from an external device to the HT16515 through a serial interface. The contents of the RAM are directly mapped to the contents of the VFD driver. Data in the RAM can be accessed through the data setting, address setting and display control commands. It is assigned as addresses in 8-bit unit as follows:
SEG1 00 03 06 09 0C 0F 12 15 18 1B 1E 21 H H H H H H H H H H H H
L
The data of each key is stored as illustrated below, and is read with the read command, starting from the least significant bit.
K ey1 K ey2 S 1 /K 1 S 5 /K 5 S 9 /K 9 S 1 3 /K 1 3 b0 b1 K ey1 K ey2 S 2 /K 2 S 6 /K 6 S 1 0 /K 1 0 S 1 4 /K 1 4 b2 b3 K ey1 K ey2 S 3 /K 3 S 7 /K 7 S 1 1 /K 1 1 S 1 5 /K 1 5 b4 b5 K ey1 K ey2 S 4 /K 4 S 8 /K 8 S 1 2 /K 1 2 S 1 6 /K 1 6 b6 b7 R e a d in g S e q u e n c e
SEG4 00 03 L 06 L 09 L 0C L 0F L 12 L 15 L 18 L 1B L 1E L 21 L H H H
H
U
H H H H H H H H
SEG8 0 0 U 0 U 0 U 0 U 1 U 1 U 1 U 1 U 1 U 1 U 2 U
DH 0H 3H 6H 9H CH FH 2H
AH
1H 4H 7H
SEG 12 01 L 04 L 07 L 0A L 0D L 10 L 13 L 16 L 19 L 1C L 1F L 22 L H H H
H H H H H H H H H
SEG 16 02 U 05 U 08 U 0B U 0E U 11 U 14 U 17 U 1A U 1D U 20 U 23 U H H H H H H H H
H H
H H
SEG 20 02 L 05 L 08 L 0B L 0E L 11 L 14 L 17 L 1A L 1D L 20 L 23 L H
SEG2 U D HU D HU D HU D HU D HU D HU D HU D HU D HU D HU D HU D
4 IG 1 IG 2 IG 3 IG 4 IG 5 IG 6 IG 7 IG 8 IG 9 IG 1 0 IG 1 1 IG 1 2
LED Port The LED port is of the CMOS output configuration. Data is written to the LED port with the write command, starting from the least significant bit. In our application (see application circuits), the user adopts an internal NMOS device to a driver LED component by connecting VDD. When a bit of this port is 0, the corresponding LED lights up; when the bit is 1, the LED turns off. The data of bits 4 through 7 are ignored.
MSB b3 b2 b1 LSB b0 LED LED LED LED 1 2 3 0
b0
b3b4 b7 XXHU XXHL Lower H ig h e r 4 b its 4 b its
Dimming Control HT16515 provides an 8-step dimmer function on display by controlling the 3-bit binary command code. The full pulse width of grid signal is divided into 16 uniform sections by PWM (pulse width modulation) technology. The 16 uniform sections available form an 8-step dimmer via 3-bit binary code. The 8-step dimmer includes 1/16, 2/16, 4/16, 10/16, 11/16, 12/16, 13/16 and 14/16. The 1/16 pulse width indicates minimum lightness. The 14/16 pulse width represents maximum lightness (Refer to the display control command). Key Matrix and Key-Input Data Storage RAM The key matrix scans the series key states at each level of the key strobe signal (Seg1/K1~Seg16/K16) output of the HT16515. The key strobe signal outputs are time-multiplexed signals from Seg1/K1~Seg16/K16. The states of inputs K0 and K1 are sampled by strobe signal Seg1/K1~Seg16/K16 and latched into the register. The key matrix is made up of a 162 matrix, as shown below.
D o n 't c a r e
Commands Commands set the display mode and status of the VFD driver. The first 1 byte input to the HT16515 through the DI pin after the CS pin has fallen, is regarded as a command. If CS is set high while commands/data are transmitted, serial communication is initialized, and the commands/ data being transmitted are not valid (however, the commands/data previously transmitted remains valid).
* Display mode setting commands
These commands initialize the HT16515 and select the number of segments and the number of grids (1/4~1/12 duty, 16 to 24 segments). When these commands are executed, the display is forcibly turned off, and key scanning is also stopped. To resume display, the display command ON must be executed. If the same mode is selected, nothing happens.
S8/ K8 S9/ K9 S10/ K10 S11/ K11 S12/ K12 S13/ K13 S14/ K14 S15/ K15 S16/ K16
S1/ K1 KEY1 KEY2
S2/ K2
S3/ K3
S4/ K4
S5/ K5
S6/ K6
S7/ K7
Rev. 1.70
6
May 7, 2010
HT16515
MSB 0 0 b3 b2 b1 LSB b0 000 000 001 001 010 010 011 011 1xx Se 0: 1: 0: 1: 0: 1: 0: 1: x: le c ts 4 5 6 7 8 9 10 11 12 D d ig d ig d ig d ig d ig d ig d ig d ig d ig is p its its its its its its its its its la y ,24 ,23 ,22 ,21 ,20 ,19 ,18 ,17 ,16 Mo se se se se se se se se se de gm gm gm gm gm gm gm gm gm en en en en en en en en en ts ts ts ts ts ts ts ts ts
D o n 't c a r e
Note:
Power-on status: 12-digit, 16 segment mode is selected.
* Data setting commands
These commands set the data write and data read modes.
MSB 0 1 D o n 't c a r e b3 b2 b1 LSB b0 Se 00 01 10 11 ts d a ta : W r ite : W r ite :R ead : D o n 't w r ite d a ta d a ta key d c a re a n d re a d m o d e to d is p la y m e m o r y to L E D p o rt a ta
A d d r e s s in c r e m e n t m o d e s e ttin g s ( d is p la y m e m o r y ) 0 : In c r e m e n ts a d d r e s s a fte r d a ta h a s b e e n w r itte n 1 : F ix e s a d d r e s s T e s t m o d e s e ttin g s 0 : N o rm a l m o d e 1 : T e s t m o d e , u s e r d o n 't u s e
Note: power-on status: normal mode operation and address increment mode are set.
* Address setting commands
These commands set the address of the display memory.
MSB 1 1 b5 b4 b3 b2 b1 LSB b0 A d d re s s (0 0 H ~ 2 3 H )
If address 24H or higher is set, data is ignored until a valid address is set. Note: power-on status: the address is set to 00H.
* Display control commands
MSB 1 0 b3 b2 b1 LSB b0 Se 00 00 01 01 10 10 11 11 ts d im 0:Se 1:Se 0:Se 1:Se 0:Se 1:Se 0:Se 1:Se m in g t p u ls t p u ls t p u ls t p u ls t p u ls t p u ls t p u ls t p u ls qu ew ew ew ew ew ew ew ew a n tity id th to id th to id th to id th to id th to id th to id th to id th to
D o n 't c a r e
1 /1 6 2 /1 6 4 /1 6 1 0 /1 1 1 /1 1 2 /1 1 3 /1 1 4 /1 6 6 6 6 6
T u r n s o n /o ff d is p la y 0 : D is p la y o ff ( k e y s c a n c o n tin u e s ) 1 : D is p la y o n
Note: power-on status: 1/16 pulse width is set and the display is turned off. Key scanning will be stopped during power-on status.
Rev. 1.70
7
May 7, 2010
HT16515
Timing Diagrams
tf 90% S n /G n 10% tS
W
tr1 ( tr2 )
CS tC
W
tC
W
tC
S
CLK tS
U
th
DI tP DO
HL
tP
LH
Key Scanning and Display Timing
K e y s c a n d a ta S n /K n o u tp u t D ig it 1 D ig it 2 D ig it 3 D ig it n D ig it 1
G 1 o u tp u t 1 /1 6 tD
IS P
G 2 o u tp u t
G 3 o u tp u t
G n o u tp u t t@ 500ms 1 fra m e = T (n + 1 )
Note: One cycle of key scanning consists of two frames, and data of 162 matrixes is stored in the RAM.
Rev. 1.70
8
May 7, 2010
HT16515
Serial Communication Format
* Reception (command/data write)
CS
CLK 1 DI
2 b0 b1
3 b2
7 b6
8 b7
* Transmission (data read)
CS CLK DI DO A d a ta r e a d c o m m a n d is s e t 1 b0 2 b1 3 b2 4 b3 5 b4 6 b5 7 b6 8 b7 b0 b1 b2 b3 b4 b5 1 2 3 4 5 6
tW
D a ta is r e a d
Be sure to connect an external pull-high resistor to this pin (1kW to 10kW). Note: 1. When data is read, a wait time tW of 1ms is necessary at 5V. 2. When data is read, a wait time tW of 2ms is necessary at 3V.
* Updating display memory by incrementing address
CS
C LK DI C om m and 1 C om m and 2 C om m and 3 D a ta 1 D a ta n C om m and 4
Note: Command 1: sets display mode Command 2: sets data Command 3: sets address Data 1 to n: transfers display data (36 bytes max.) Command 4: controls display
* Updating specific addresses
CS
CLK DI Com m and 1 Com m and 2 D a ta Com m and 2 D a ta n
Note: Command 1: sets data Command 2: sets address Data: display data
Rev. 1.70
9
May 7, 2010
HT16515
Application Circuits
R7 R8
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D1 S S S S S S S S S S1 S1 S1 S1 S1 S1 S1
6
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
VFD
Ef
OSC R
OSC
K e y 0 K e y 1 S 1 /K 1
S 2 /K 2
S 3 /K 3
S 4 /K 4
S 5 /K 5
S 6 /K 6
S 7 /K 7
S 8 /K 8
S 9 /K 9
S 1 0 /K 1 0 S 1 1 /K 1 1 S 1 2 /K 1 2 S 1 3 /K 1 3 S 1 4 /K 1 4 S 1 5 /K 1 5 S 1 6 /K 1 6
MCU R1
VDD (5 V )
CS CLK DI
S 1 7 /G 1 2 ~ S 2 4 /G 5
H T16515
G 1~G 4
DO
LED0 VDD (5 V ) R2
LED1 R3
LED2 R4 R5
LED3
V
DD
VSS
VEE
C +5V -3 0 V
Note:
ROSC=82kW for oscillator resistor R1=1~10kW for external pull-high resistor R2~R6=750W~1.2kW R7~R8=10kW for external pull-low resistor D1~D16=1N4001 Ef=Filament voltage for VFD C=0.1mF~1.0mF
Rev. 1.70
10
May 7, 2010
HT16515
Package Information
44-pin QFP (10mm10mm) Outline Dimensions
C D G 23 I 34 22 L F A B E 44 12 K 1 11 a J 33 H
Symbol A B C D E F G H I J K L a Symbol A B C D E F G H I J K L a Rev. 1.70
Dimensions in inch Min. 0.512 0.390 0.512 0.390 3/4 3/4 0.075 3/4 0.010 0.029 0.004 3/4 0 Nom. 3/4 3/4 3/4 3/4 0.031 0.012 3/4 3/4 3/4 3/4 3/4 0.004 3/4 Dimensions in mm Min. 13.00 9.90 13.00 9.90 3/4 3/4 1.90 3/4 0.25 0.73 0.10 3/4 0 Nom. 3/4 3/4 3/4 3/4 0.80 0.30 3/4 3/4 3/4 3/4 3/4 0.10 3/4 11 Max. 13.40 10.10 13.40 10.10 3/4 3/4 2.20 2.70 0.50 0.93 0.20 3/4 7 Max. 0.528 0.398 0.528 0.398 3/4 3/4 0.087 0.106 0.020 0.037 0.008 3/4 7
May 7, 2010
HT16515
44-pin LQFP (10mm10mm) (FP3.2mm) Outline Dimensions
C D G 23 I 34 22 F A B E 44 12 K 1 11 a J 33 H
Symbol A B C D E F G H I J K a Symbol A B C D E F G H I J K a
Dimensions in inch Min. 0.512 0.390 0.512 0.390 3/4 3/4 0.053 3/4 0.004 0.041 0.004 0 Nom. 0.520 0.394 0.520 0.394 0.031 0.012 0.055 3/4 3/4 0.047 3/4 3/4 Dimensions in mm Min. 13.00 9.90 13.00 9.90 3/4 3/4 1.35 3/4 0.10 1.05 0.10 0 Nom. 13.20 10.00 13.20 10.00 0.80 0.30 1.40 3/4 3/4 1.20 3/4 3/4 Max. 13.40 10.10 13.40 10.10 3/4 3/4 1.45 1.60 0.25 1.35 0.25 7 Max. 0.528 0.398 0.528 0.398 3/4 3/4 0.057 0.063 0.010 0.053 0.008 7
Rev. 1.70
12
May 7, 2010
HT16515
Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor Inc. (Shenzhen Sales Office) 5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057 Tel: 86-755-8616-9908, 86-755-8616-9308 Fax: 86-755-8616-9722 Holtek Semiconductor (USA), Inc. (North America Sales Office) 46729 Fremont Blvd., Fremont, CA 94538 Tel: 1-510-252-9880 Fax: 1-510-252-9885 http://www.holtek.com
Copyright O 2010 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holteks products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.
Rev. 1.70
13
May 7, 2010

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