IZ12291M single chip CMOS with 10-digit arithmetic operation, single m
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IZ12291M 10-DIGITS CALCULATOR
IZ12291M single chip CMOS with 10-digit arithmetic operation, single memory, extraction-of-square-root, percentage calculation, auto power punctuation designed operation with 1.5V power supply.
FUNCTIONS Four standard functions Square reciprocal calculations Extraction square root Auto constant calculations (constant: multiplicand, divisor, addend subtrahend) Mark-up mark-down calculations Percentage calculations Chain multiplication division Power calculations Rough estimate calculations Punctuation comma touch tone mark display Clear key: ON/C,
FEATURES Single chip CMOS construction Floating decimal point direct drive Overflow indication: chip oscillator components Auto Power Accumulating memory: Bare chip available Mirror type
CONNECTION
ABSOLUTE MAXIMUM RATINGS Characteristic Symbol
Value
Unit
Terminal Voltage Operating Temperature Storage Temperature
Tstg
ELECTRICAL CHARACTERISTICS 1.5V, unless otherwise specified) Characteristic Symbol Test Condition Unit Operating Voltage Input Voltage (pins FDISB, EXT) Input Current (pins FDISB, EXT) Input Current IIH1 IIL1 IIH2 VCC; APODISB
IZ12291M
Characteristic (pins Output Voltage (pins a1÷a11, b1÷b10, c1÷c10, H1÷H3) Display Frequency Supply Current Symbol IIL2 IOFF IDIS Test Condition FDISB Without load Without load Without load 1.3V, Display Display 1.3V, Ddisplay 2.80 1.30 2.95 1.50 1.70 0.20 Unit
FUNCTIONAL DESCRIPTION Decimal point system Complete floating decimal point system. Integral number digits leading zero suppression. Zero shift. Symbols negative number display error display punctuation comma
Error detections System errors occur when: division zero. extraction square root negative number. integral part memory calculation result exceeds digits. Rough estimate calculation error occur when integral part calculation standard functions, percentage, square root, reciprocal power calculations result exceeds digits. Error indication System error indicated 1-digit position sign-digit position. Rough estimate calculation error high-order 10-digit calculation result indicated together with "E". decimal point indicated position corresponding calculation result time zero shift performed Error release System error system error release ON/C key. Rough estimate calculation error ON/C release rough estimate-calculation error clear calculation result once. release only rough estimate calculation error ("E" flag). Number entry Numericals entered digits. Numerical entries equal digits more ignored.
IZ12291M
Memory protection error detection, memory contents present before error detection protected. Memory indication memory content zero, indicated sign-digit position. bounce protection Front edge Minimum words Trailing edge Minimum words word 3.3ms when display frequency 100Hz. Auto power Power automatically turns after minutes pass from last pressure. connecting APODISB VCC, auto power function disabled enabled, respectively.
Mirror with IZ12291M
CLEAR DESCRIPTION ON/C Power-on function. operations cleared ON/C (except memory contents). edit last operand operator. MARK-UP MARK-DOWN CALCULATION
ENTRY AM/100 DISPLAY AM/100 AM/100 AM/100 AM/100
Note: AMOUNT
C/NO
C/NO
)PIHC( M19221ZI
APPLICATION CIRCUIT (mirror LCD)
IZ12291M
NOTE1:
Solar Battery
APODISB STATE
ENABLE
AUTO POWER CONDITION
DISABLE
IZ12291M
DIAGRAM
IZ12291M
LOCATION
Name ON/C Description External Clock FOSC Disable input input input Input Power Supply Solar battery Option Disable COM1 Display output Display output Display output Display output Display output Name Description Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Display output Name Description Display output Display output Display output Display output Display output Display output Display output Display output Display output COM3 COM2 Ground Capacitor terminal Capacitor terminal Capacitor terminal
APO: Output Power
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