IZ1225M Datasheet, PDF (1/8 Pages) Integral Corp. – BASIC FUNCTION 8-DIGITS LCD CALCULATOR WITH TOUCH TONE AND PUNCTUATION FUNCTION

IZ1225M
BASIC FUNCTION 8-DIGITS LCD CALCULATOR WITH TOUCH
TONE AND PUNCTUATION FUNCTION
The IZ1225M is a single chip CMOS LSI with 8-digit arithmetic operation, single
memory, extraction-of-square-root, percentage calculation and auto power off and
punctuation and touch tone function, designed for FEM LCD operation with a 1.5V power
supply.
FUNCTIONS
FEATURES
• Four standard functions (+, -, ×, ÷ )
• Auto constant calculations (constant:
multiplicand, divisor,
addend and subtrahend)
• Square and reciprocal calculations
• Mark-up and mark-down calculations
• Extraction of square root
• Percentage calculations
• Chain multiplication and division
• Power calculations
• Rough estimate calculations
• Touch tone function
• Punctuation comma display
• Clear key: ON/C, ON/CE, CE
• Single chip CMOS construction
• Floating decimal point
• LCD direct drive
• Overflow indication: “E”
• Accumulating memory: M+, M-,
RM, CM, RM/CM
• 48 QFP and bare chip available
• Mirror type
ABSOLUTE MAXIMUM RATINGS (T_a = 25^oC)
Characteristic
Terminal Voltage
Supply Voltage
Operating Temperature
Storage Temperature
Symbol
V_GG
V_IN
V_GG
T_OPR
T_stg
Value
- 0.3 ~ + 3.5
- 0.3 ~ V_GG + 0.3
2.5 ~ 3.5
0 ~ + 50
- 55 ~ + 125
Note: 1. Maximum voltage on any pin with respect to the GND
Unit
V
V
V
o_C
o_C
Note
1
1