IZ1238M
8-DIGITS CURENCY CALCULATOR
The IZ1238M are a single chip CMOS LSI with 8-digit arithmetic operation, single memory,
extraction-of-square-root, percentage calculation and auto power off function, designed for FEM
LCD operation with a 1.5V power supply. The IZ1238M has special keys (C1, C2, SM) for
currency exchange calculations and special memory for save currency rate. The result of
currency exchange operations rounded to two decimal if it exceeds two decimal.
FUNCTIONS
FEATURES
• Four standard functions (+, -, ×, ÷ )
• The result of currency exchange operation
is
• Single chip CMOS construction
• Floating decimal point
• LCD direct drive
rounded to two decimal
• Special memory for currency rates
• Overflow indication: “E”
• On-chip oscillator components
• Mirror type LCD
• Punctuation comma
• Auto Power off
• Auto constant calculations
• Mark-up and mark-down calculations
• Percentage calculations
• Chain multiplication and division
• Power calculations
• Rough estimate calculations
• Clear key: ON/C, CE
• Saving special memory contents when auto
power off
• Currency exchange calculations :
Currency 1 → Currency 2 and
Currency 2 → Currency 1
Currencies C1, C2 indication
• Accumulating memory: M+, M-, MR, MC,
MRC
Bare chip is available
ABSOLUTE MAXIMUM RATINGS ( Ta = 25oC )
Characteristic
Symbol
Value
Unit
VDD
- 0.3 ~ + 2.1
V
Terminal Voltage
VIN
VDD
Ta
- 0.3 ~ VDD + 0.3
1.1 ~ 1.8
V
Supply Voltage (Battery)
Operating Temperature
Storage Temperature
V
0 ~ + 50
oC
oC
Tstg
- 55 ~ + 125
1
