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SC3445

10-DIGIT SCIENTIFIC CALCULATOR

Silan Microelectronics 

Silan

Semiconductors

10-DIGIT SCIENTIFIC CALCULATOR

SC3445

DESCRIPTION

The SC3445 is a one-chip CMOS LSI for a hand calculator with

mathematical functions and a 10 digits variable mode exponential

type liquid crystal display.

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48

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2 3 4 5 67 8

31 30 29 28 27 26

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9 10 11 12

FEATURES

* Built-in ROM capacity: 64 X63 X8 bits

* Built-in RAM capacity: 12X16X4 bits

* RC oscillator Internal operation: 100kHz (3V TYP. Resistance:

200KΩ)

* Current consumption:

Display: 80µA (3V TYP)

Off:

3µA (3V max)

* LCD driver: 1/4 duty, 1/3 bias

* Single power supply: 2.7V to 3.3V

* Automatic power off

* Operand: 4 bits

* C-MOS metal gate process.

* Not designed or rated as radiation hardened.

* Not programmable (on chip programmed ROM).

* A memory that holds up to 40 steps to make for easy repeated

calculations.

SC3445

* A full complement of 46 mathematical

functions.

* Automatic priority of operations logic

and parentheses nesting up to 7

deep for simplified calculations.

* Memory protection with power off (3

memories and program memory).

* A handy storage memory for

conversion calculations.

* An automatic power off feature to

preserve battery life.

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0

2001.06.11

1

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