SC3423 Datasheet, PDF (1/13 Pages) Silan Microelectronics Joint-stock – 8-DIGIT CALCULATOR

Silan
Semiconductors
SC3423
8-DIGIT CALCULATOR
DESCRIPTION
The SC3423 is a single-chip LSI CMOS calculator with 8-digit four
function arithmetic operations, single memory, extraction of square
root and percentage calculation functions, leading zero and trailing
zero suppression, chain calculations and internal debouncing and
encoding of keyboard inputs. It is designed for LCD operation with
3.0V power supply (either from solar cell or battery), auto-power off,
low power dissipation and single power supply making the SC3423
ideal for hand held calculators with low system cost.
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33
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32
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25
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24
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FEATURES
* Number of digits - 8 digits (rough estimated calculation is possible).
SC3423 chip topography
* Calculations:
- Standard four functions (+ , - , x , +).
- Chain multiplication and division.
- Auto-constant calculation (constant multiplicand, divisor,
addend and subtrahend).
- Square and reciprocal calculations.
- Extraction of square root.
* Display format: 8 digits & sign (-, E & M)
leading zero suppression zero shift.
* Touch tone function and display.
* Punctuation comma display.
* Auto power off ability.
- Percentage calculations.
- Power calculations.
ORDERING INFORMATIOM
- Rough estimate calculations.
SC3423 Has on Chip Oscillator Resistor
- Memory calculations.
SC3424 Pinning Mirrored Type of SC3423
* Decimal point system-complete floating decimal point system.
SC3425 No Oscillator Resistor
* Negative number indication: number + minus (-) sign.
SC3426 Pinning Mirrored Type of SC3425
ABSOLUTE MAXIMUM RATING
Characteristic
Symbol
Value
Supply Voltage
VDD - VSS
-0.3 ~ +3.5
Input Voltage (Note: 1)
VIN
-0.3 ~ VDD + 0.3
Resistance for CG (Note: 2)
Rf
560f5%
Storage temperature
TSTG
-55 ~ +125
Operating Temperature
TOPT
Note: 1.Maximum voltage on any pin with respect to the Vss.
0 ~ + 50
2.Resistor value for CG is varied according to the floating capacitance on a printed circuit board.
Unit
V
V
K¡
°C
°C
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
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