IZ1223M Datasheet, PDF (1/8 Pages) Integral Corp. – BASIC FUNCTION 8-DIGITS LCD CALCULATOR WITH TOUCH TONE AND PUNCTUATION FUNCTION

IZ1223M
BASIC FUNCTION 8-DIGITS LCD CALCULATOR WITH TOUCH
TONE AND PUNCTUATION FUNCTION
The IZ1223M 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 3.0V 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
ABSOLUTE MAXIMUM RATINGS (T_a = 25^oC)
Characteristic
Symbol
Terminal Voltage
V_GG
V_IN
Supply Voltage
V_GG
Operating Temperature
T_OPR
Storage Temperature
T_stg
• Single chip CMOS construction
• Floating decimal point
• LCD direct drive
• Overflow indication: “E”
• Accumulating memory: M+, M-, RM,
CM, RM/CM
• Bare chip available
• Mirror type
Value
- 0.3 ~ + 3.5
- 0.3 ~ V_GG + 0.3
2.5 ~ 3.5
0 ~ + 50
- 55 ~ + 125
Unit
V
V
V
o_C
o_C
Note
1
Note: 1. Maximum voltage on any pin with respect to the GND
ELECTRICAL CHARACTERISTICS (T_a = 25^oC, V_GG = 3.0V,
Characteristic
Symbo Test Condition
l
Input Voltage 1 (K2 ~ K6, TI, V_IH1
S2)
V_IL1
V_IH2
unless otherwise specified)
Min Typ Max Uni
t
V_GG - 0.4
V
0.4
V_GG - 0.4
Input Voltage 2 (S1)
V_IL2
0.2 ^V
Input Current 1 (K2 ~ K6, TI)
I_IH1
I_IL1
V_IN = V_GG
V_IN = 0V
Input Current 2 (S2)
I_IH2
V_IN = V_GG
I_IL2
V_IN = 0V
Input Current 3 (S1)
I_IH3
V_IN = V_GG S2=GN
I_IL3
V_IN = 0V
D
5
Input Current 4 (S1)
I_IH4
V_IN = V_GG S2 =
20
5.5
1
10
µA
1
1
µA
10
1
15
µA
30 40 µA
1