IZ1228 Datasheet, PDF (1/9 Pages) Integral Corp. – 8-DIGIT CALCULATOR

IZ1228/IZ1228M
8-DIGIT CALCULATOR
The IZ1228/IZ1228M 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 IZ1228M has
special keys (C1, C2, SM) for currency exchange calculations and special memory for save
currency rate.
FUNCTIONS
• Four standard functions (+, -, ×, ÷ )
• 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
• Currency exchange calculations :
Currency 1 → Currency 2 and
Currency 2 → Currency 1
FEATURES
• Single chip CMOS construction
• Floating decimal point
• LCD direct drive
• Special memory for currency rates
• Overflow indication: “E”
• On chip oscillator components
• Direct (IZ1228) or Mirror (IZ1228M) LCD
• Punctuation comma
• Auto Power off
• Saving special memory contents when auto
power off
• Accumulating memory: M+, M-, MR, MC,
MRC
• Bare chip is available
ABSOLUTE MAXIMUM RATINGS ( T_a = 25^oC )
Characteristic
Terminal Voltage
Supply Voltage (Battery)
Operating Temperature
Storage Temperature
Symbol
V_DD
V_IN
V_DD
T_a
T_stg
Value
Unit
- 0.3 ~ + 2.1
V
- 0.3 ~ V_DD + 0.3
V
1.1 ~ 1.8
V
0 ~ + 50
o_C
- 55 ~ + 125
o_C
1