IZ1238M single chip CMOS with 8-digit arithmetic operation, single mem

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IZ1238M single chip CMOS with 8-digit arithmetic operation, single mem

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IZ1238M 8-DIGITS CURENCY CALCULATOR
IZ1238M single chip CMOS with 8-digit arithmetic operation, single memory, extraction-of-square-root, percentage calculation auto power function, designed operation with 1.5V power supply. IZ1238M special keys (C1, currency exchange calculations special memory save currency rate. result currency exchange operations rounded decimal exceeds decimal.
FUNCTIONS Four standard functions result currency exchange operation rounded decimal Auto constant calculations Mark-up mark-down calculations Percentage calculations Chain multiplication division Power calculations Rough estimate calculations Clear key: ON/C, Currency exchange calculations Currency Currency Currency Currency
FEATURES Single chip CMOS construction Floating decimal point direct drive Special memory currency rates Overflow indication: On-chip oscillator components Mirror type Punctuation comma Auto Power Saving special memory contents when auto power Currencies indication Accumulating memory: Bare chip available
ABSOLUTE MAXIMUM RATINGS 25oC Characteristic Terminal Voltage Supply Voltage (Battery) Operating Temperature Storage Temperature Symbol Tstg Value Unit
IZ1238M
ELECTRICAL CHARACTERISTICS 25oC, 1.5V, unless otherwise specified) Characteristic Operating Voltage Input Voltage (Pins Input Current (Pins Output Voltage (P1, A2~A5) Output Voltage Display Frequency Symb IOFF Supply Current IDIS Test Condition without load 15µA without load without load without load 1.3V while display 560K display 1.3V while display 1.1V, while operation Unit 0.15 2.80 1.30 2.95 1.50 1.70 0.20
0.15
OUTPUT WAVEFORM
OUTPUT WAVEFORM
FUNCTIONAL DESCRIPTION Decimal point system Complete floating decimal point system. digits leading zero suppression. Zero shift. Symbols negative number display
IZ1238M
error display punctuation comma non-zero memory indicator currency exchange operations indicator Error detection System errors occur when: division zero. extraction square root negative number. Rough estimate calculation error occur when integral part result standard functions, percentage, square, reciprocal, power calculations exceed digits. Error indication System error indicated 1-digit position sign-digit position. Rough estimate calculation error high-order 8-digit calculation result indicated together with "E". decimal point indicated position corresponding calculation result time 10-8, zero shift performed Error release System error system error release ON/C key. Rough estimate calculation error rough estimate calculation error released ON/C, key. Number entry Numerical entered digits. Numerical entries equal digits more ignored. Memory protection error detection, special memory content retained when auto power off. bounce protection Front edge Down word about words. Trailing edge words word 3.3ms when display frequency 100Hz. Auto power Power automatically turns after minutes pass from last pressure. special memory content saving when power auto off.
IZ1238M
CONNECTION
a1b1 a2b2 a3b3 a4b4 a5b5 a6b6 a7b7 c7a8b8
Mirror with IZ1238M DESCRIPTION
Numerals input keys
Decimal point key, Sign change key, Enter
ON/C
Clear keys
ON/C: Power ON/All clear (system reset) except special memory contents Entry clear such only entered data cleared
Four standard function keys
Percent key, Extraction square root
Currency exchange keys
Entered Data multiplied (when press divided (when press currency rate (content special memory) result operation rounded decimal
Currency rate C1/C2
(Entered Data into special memory this key)
Recall memory, clear memory, recall clear memory
APPLICATION CIRCUIT (mirror LCD)
K065
8c-5c ,8b-5b ,8a-6a
NOTE1: Chip substrate must floating connected
M8321ZI
4c-1c ,4b-1b ,5a-1a
IZ1238M
C/NO
V5.1
IZ1238M
DIAGRAM
LOCATION
Name Description Connection input input input Strobe output Strobe output Strobe output Strobe output Strobe output Strobe output input input Resistor terminal Resistor terminal Capacitor terminal Capacitor terminal Capacitor terminal Ground Display output Display output Display output Display output Display output Display output -1070 -1050 -885 -735 -585 -435 -285 -135 1050 1070 1070 1070 1070 1070 1070 1070 1070 1070 1070 -810 -1050 -1090 -1090 -1090 -1090 -1090 -1090 -1090 -1090 -1090 -1090 -1090 -1070 -915 -765 -485 -225 Name 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 Display output Display output Power supply Connection 1050 -165 -315 -465 -615 -765 -915 -1070 -1070 -1070 -1070 -1070 -1070 -1070 -1070 -1070 -1070 1070 1090 1090 1090 1090 1090 1090 1090 1090 1090 1090 1090 1090 1090 -130 -300 -470 -650

IZ1238M single chip CMOS with 8-digit arithmetic operation, single mem

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