View IZ1223M_1258307.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

IZ1223M BASIC FUNCTION 8-DIGITS LCD CALCULATOR WITH TOUCH TONE AND PUNCTUATION FUNCTION
The IZ1223M 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 3.0V 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
o ABSOLUTE MAXIMUM RATINGS (Ta = 25 C) Characteristic Symbol
FEATURES * Single chip CMOS construction * Floating decimal point * LCD direct drive * Overflow indication: "E" * Accumulating memory: M+, M-, RM, CM, RM/CM * Bare chip available * Mirror type
Value - 0.3 ~ + 3.5 - 0.3 ~ VGG + 0.3 2.5 ~ 3.5 0 ~ + 50 - 55 ~ + 125
Unit V V V o C o C
Note 1
Terminal Voltage Supply Voltage Operating Temperature Storage Temperature
VGG VIN VGG TOPR Tstg
Note: 1. Maximum voltage on any pin with respect to the GND ELECTRICAL CHARACTERISTICS (Ta = 25oC, VGG = 3.0V, unless otherwise specified) Characteristic Symbo Test Condition Min Typ Max Uni l t Input Voltage 1 (K2 ~ K6, TI, VIH1 VGG - 0.4 V S2) VIL1 0.4 VIH2 VGG - 0.4 Input Voltage 2 (S1) VIL2 IIH1 IIL1 IIH2 IIL2 IIH3 IIL3 IIH4 VIN = VGG VIN = 0V VIN = VGG VIN = 0V VIN = VGG S2=GN D VIN = 0V VIN = VGG S2 = 0.2 1 10 1 1 1 15 40 V
5.5
1
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
IZ1223M
Characteristic Symbo l IIL4 VOH1 VOL1 VOA VOB VOC Display Frequency Touch Tone (PO) Output Drive Current Fd IOL IOH IOFF (1) Dissipation Idis (2) Test Condition VGG VIN = 0V without load IOUT = 15A without load without load without load VGG = 3V while display is on, VGG = 3V, VOL = 0.5V, TI =3V VGG = 3V, VOL = 0.5V, TI =3V Display off, VGG = 3V VGG = 3V while display is on, Min Typ Max 1 VGG 0.15 0.15 2.80 1.30 2.95 1.50 0 50 3 mA -3 0.1 75 1.70 0.20 Hz V V Uni t
Output Voltage 1 (P1, P2, A2~A5) Output Voltage 2 (H1 ~ H3, a1 ~ a9, b1 ~ b8, c1 ~ c8)
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)
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
2
20
30
A
IZ1223M
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. 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:
3
IZ1223M
OFF ON/C ON/CE 5 6 4 RM/CM . 9 8 = M+ x . . 0 1 3 2 CM 7
+/-
CE
+
M-
%
RM
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
,
, . , . , . , . , . . ..
LCD connector
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
4
URWDFLGQL HQRW KFXRW
QRLWDXWFQXS
VXQLP
URUUH
\URPH0
,
H1 H2 H3
a9 c8 b8a8 c7
,
,
,
IZ1223M
,
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
MC R
.
7 MC
% MR -/+ +M
E C /N O
1 2 3 2A
4 5 6 3A
8 9
-M EC
4A 6
+
5A
X
2P
2
+
+
3H
2H
9a 8c 8b 8a 7c 2
IT 3K 2K 2A 3A 4A 5A 2P 1P 5K 6K 4K 31 21 11 01 90 80 70 60 50 40 30 20 10 OP 44 34 DDV 24 1H 14 1a 41 04 1b 51 M3221ZI 93 1c 61 83 2a 71 73 2b 81 63 2c 91 02 12 22 32 42 52 62 72 82 92 03 13 23 33 43 53 7b 7a 6c 6b 6a 5c 5b 5a 4c 4b 4a 3c 3b 3a
TS T
1
3H ,2H
8c-5c ,8b-5b ,9a-6a 11 31
4c-1c ,4b-1b ,5a-1a
1H
.
.
.
.
.
.
.
.
,
,
,
,
,
APPLICATION CIRCUIT
33
IZ1223M
6
4K 6K 5K FF O C/NO 1P 3 2D
PR
1D
DDV
-
GND
IZ1223M
PAD DIAGRAM
7
IZ1223M
PIN DESCRIPTION Pa d No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Pad Name PO K4 K6 K5 P1 P2 A5 A4 A3 A2 K2 K3 Ti GND H3 H2 a9 c8 b8 a8 c7 b7 O O O O O O O O I/O O I I I O O O O O O I I I Description 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 Ground COMMON 3 COMMON 2 Display output Display output Display output Display output Display output Display output Pad No. 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Pad Name a7 c6 b6 a6 c5 b5 a5 c4 b4 a4 c3 b3 a3 c2 b2 a2 c1 b1 a1 H1 VGG TST I I/O O O O O O O O O O O O O O O O O O O O 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 COMMON 1 Power supply Test
8

▲Up To Search▲

Price & Availability of IZ1223M

	To Download IZ1223M Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .