View IZ1225MR_1258308.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

IZ1225M BASIC FUNCTION 8-DIGITS LCD CALCULATOR WITH TOUCH TONE AND PUNCTUATION FUNCTION
The IZ1225M is a single chip CMOS LSI with 8-digit arithmetic operation, single memory, extraction-of-square-root, percentage calculation and auto power off and punctuation and touch tone function, designed for FEM LCD operation with a 1.5V power supply. FUNCTIONS * Four standard functions (+, -, x, / ) * Auto constant calculations (constant: multiplicand, divisor, addend and subtrahend) * Square and reciprocal calculations * Mark-up and mark-down calculations * Extraction of square root * Percentage calculations * Chain multiplication and division * Power calculations * Rough estimate calculations * Touch tone function * Punctuation comma display * Clear key: ON/C, ON/CE, CE ABSOLUTE MAXIMUM RATINGS (Ta = 25oC)
Characteristic
FEATURES * Single chip CMOS construction * Floating decimal point * LCD direct drive * Overflow indication: "E" * Accumulating memory: M+, M-, RM, CM, RM/CM * 48 QFP and bare chip available * Mirror type
Symbol VGG VIN
Value - 0.3 ~ + 3.5 - 0.3 ~ VGG + 0.3 2.5 ~ 3.5 0 ~ + 50 - 55 ~ + 125
Unit V V V
o o
Note 1
Terminal Voltage Supply Voltage Operating Temperature Storage Temperature
VGG TOPR Tstg
C C
Note: 1. Maximum voltage on any pin with respect to the GND
1
IZ1225M
ELECTRICAL CHARACTERISTICS (Ta = 25oC, VGG = 3.0V, unless otherwise specified)
Characteristic Input Voltage 1 (K2 ~ K6, TI, S2) Input Voltage 2 (S1) Symbol VIH1 VIL1 VIH2 VIL2 IIH1 IIL1 IIH2 IIL2 IIH3 IIL3 IIH4 IIL4 VOH1 VOL1 VOA VOB VOC Display Frequency Touch Tone (PO) Output Drive Current Dissipation Fd IOL IOH IOFF (1) Idis (2) VIN = VGG VIN = 0V VIN = VGG VIN = 0V S2=GN VIN = VGG D VIN = 0V S2 = VIN = VGG VGG VIN = 0V without load IOUT = 15A without load without load without load VGG = 1.5V while display is on, VGG = 1.5V, VOL = 0.5V, TI =3V VGG = 1.5V, VOL = 0.5V, TI =3V Display off, VGG = 3V VGG = 1.5V while display is on, Test Condition Min VGG - 0.4 VGG - 0.4 0.2 1 10 1 1 1 15 40 1 V Typ Max 0.4 Unit V
5.5
Output Voltage 1 (P1, P2, A2~A5) Output Voltage 2 (H1 ~ H3, a1 ~ a9, b1 ~ b8, c1 ~ c8)
VGG - 0.15 V 0.15 2.80 1.30 2.95 1.50 0 50 3 mA -3 0.1 75 1.70 0.20 Hz V
NOTE: 1) Measured by the next test circuit after power supply automatically turns off. 2) Measured by the next test circuit while "0" is being displayed after auto clear operation and while key is not being depressed.
OUTPUT WAVEFORM 1; Hi (i = 1, 2, 3)
OUTPUT WAVEFORM 2; ai, bi, ci, (i = 1, 2, ... , 8)
2
20
30
Input Current 4 (S1)
5 20
10 30
Input Current 3 (S1)
Input Current 2 (S2)
Input Current 1 (K2 ~ K6, TI)
A A A A
A
IZ1225M
FUNCTIONAL DESCRIPTION
Decimal point system Complete floating decimal point system. Integral number : 8 digits leading zero suppression. Zero shift. Symbols : - : negative number display E : error display M : memory display , : punctuation comma : touch tone indicator
Error detections * System errors occur when: 1) The integral part of any memory calculation result exceeds 8 digits. 2) The division by zero. 3) The extraction of square root of a negative number. * Rough estimate calculation error When the integral part of the result of any standard functions, percentage, square, reciprocal, or power calculations exceed 8 digits.
Error indication * System error "0" is indicated in the 1-digit position and "E" in the sign-digit position. * Rough estimate calculation error The high-order 8-digit calculation result is indicated together with "E". The decimal point is indicated in the position corresponding to a calculation result of time 10-8, and no zero shift is performed Error release * System error A system error can be release by the ON/C or ON/CE key. * Rough estimate calculation error A rough estimate calculation error can be released by the ON/C, ON/CE, CE key. A calculation result is not cleared by ON/CE, CE key but is retained. Number entry Numerical can be entered up to 8 digits. Numerical entries equal to 9 digits or more are ignored.
3
IZ1225M
Memory protection In any error detection, the memory content is retained. Memory indication If the memory content is not zero, "M" is indicated in the sign-digit position. Doubler key depression The order of the priority when two keys are being depressed simultaneously, is as follows:
8
When the OFF and ON/C key are depressed simultaneously, the OFF key is given priority. Key bounce protection Front edge Down to 1 word and up to about 3 words.
Trailing edge 9 words 1 word is 3.3ms when display frequency is fd = 100Hz. DISPLAY FONTS * Numericals font
Sigh font
,
URWDFLGQL HQRW KFXRW QRLWDXWFQXS VXQLP URUUH
4
7
-
MC
9
.
2
MC/MR 3
1
4
MR
6 0
%
5 -M . .
EC /NO + x
+M
C /NO EC
\URPH0
-/+
FFO =
IZ1225M
LCD connector
, .
, .
, .
, .
, . . ..
,
H1 H2 H3
a9 c8
H2 H3 a9 c8 b8 a8 c7 b7 a7 c6 b6 a6 c5 b5 a5 c4 b4 a4 c3 b3 a3 c2 b2 a2 c1 b1 a1 H1
,
,
,
,
b8a8 c7
b7a7 c6
b6 a6 c5
b5a5 c4
b4a4 c3
b3a3 c2
b2a2 c1
b1a1
AUTO POWER OFF Power automatically turns off after 9 - 11 minutes pass from the last key pressure. (S1 = Low, S2 = High) ON/C KEY All operations except memory content are cleared by ON/C key. TOUCH TONE () KEY * When power is ON, the touch tone function is enable and the beep sound is generated output during 125ms and sing is displayed on LCD. * Selection of touch tone function is toggled by touch tone key. * Output wave form.
ft = 2KHz
MARK-UP AND MARK-DOWN CALCULATION Mark-up and mark-down calculation are performed as follows.
ENTRY A B % A x B % +OR= A A B A AB/100 DISPLAY A A B AB/100 AB/100 A+AB/100 OR A --AB/100
- VOA - VOC
125 ms
5
3K 2K
0
MCR
7 MC
% MR -/+ +M
E C /NO
.
1 2 3 2A
4 5 6 3A
8 9
-M EC
+
4A 6 5A
X
2P
2
IT 3 K 2K 2A 3 A 4A 5A 2P 1P 5 K 6 K 4K
31 21 11 01 90 80 70 60 50 40 30 20
0.1
BV
AV
+
+
NV
GND
3H
2H
9a 8c 8b 8a 7c 2
10 OP 74 41 64 DDV 51 54 1H 61 44 1a 71 34 1b 81 M52 21ZI 24 1c 91 14 2a 02 04 2b 12 93 2c 22 83 3a 32 42 52 62 72 82 92 03 13 23 33 43 53 63 73 7b 7a 6c 6b 6a 5c 5b 5a 4c 4b 4a 3c 3b
TS T
1
3H ,2H
8c-5c ,8b-5b ,9a-6a 11 31
4c-1c ,4b-1b ,5a-1a
1H
.
.
.
.
.
.
.
.
,
,
,
,
,
APPLICATION CIRCUIT
33
IZ1225M
6
4K 6K 5K FFO C/NO 1P 3 2D
PR
1D
DDV
-
0.1
IZ1225M
PAD DIAGRAM
130 35 480 34 630 33 780 930 1080 1230 1380 1530 1680 32 31 30 29 28 27 26 1830 1995 0 25 24 2150 23 , ( 2280 22
2150
2150
1910 1760 1610 1460 1310 1160 1010 860 675 525 375
36 37 38 39 40 41 42 43 44 45 1
22 21 20 19
1955 1785 1655 1505 1355 1205
I Z1225MR (CHI P) Chip Size:: 2280 x 2280 PAD Size: 100 x 100 Unit: m m
18 17
16
965
15
710
14
435 285 130
13 130 (0,0) 2 3 4 5 6 7 8 9 10 11 12
130
425
575
725
875 1025 1185 1345 1495 1645 1795
2150
7
IZ1225M
PIN DESCRIPTION Pa d 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Pad Nam PO K4 K6 K5 P1 P2 A5 A4 A3 A2 K2 K3 Ti VB VA VC GND H3 H2 a9 c8 b8 a8 c7 O O O O O O O Ground COMMON 3 COMMON 2 Display output Display output Display output Display output Display output
I/O Description
O I I I O O O O O O I I I
Piezo output Key input Key input Key input Strobe output Strobe output Strobe output Strobe output Strobe output Strobe output Key input Key input Test input
Pad No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
Pad Name b7 a7 c6 b6 a6 c5 b5 a5 c4 b4 a4 c3 b3 a3 c2 b2 a2 c1 b1 a1 H1 VGG TST
I/O
Description Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output COMMON 1 Power supply I Test
O O O O O O O O O O O O O O O O O O O O O
8

▲Up To Search▲

Price & Availability of IZ1225MR

	To Download IZ1225MR Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .