IZ1229M

1

The IZ1229M is a single chip CMOS LSI with 10-digit arithmetic operation, single memory,

extraction-of-square-root, percentage calculation, auto power off and punctuation and touch tone

function, designed for FEM LCD operation with a 1.5V power supply.

FUNCTIONS

• Four standard functions (+, -, ×, ÷ )

• Square and reciprocal calculations

• Extraction of square root

• Auto constant calculations (constant:

multiplicand, divisor,

addend and subtrahend)

• Mark-up and mark-down calculations

• Percentage calculations

• Chain multiplication and division

• Power calculations

• Rough estimate calculations

• Punctuation comma and touch tone mark display

• Clear key: ON/C, CE

• Touch tone function

FEATURES

• Single chip CMOS construction

• Floating decimal point

• LCD direct drive

• Overflow indication: “E”

• On chip oscillator components

• Auto Power off

• Accumulating memory: M+, M-, MR,

MC, MRC

• Bare chip is available

Mirror type

LCD CONNECTION