IZ1229 single chip CMOS with 10-digit arithmetic operation single memo
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IZ1229 10-DIGITS CALCULATOR
IZ1229 single chip CMOS with 10-digit arithmetic operation single memory, extraction-of-square-root, percentage calculation, auto power punctuation touch tone function, 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, Touch tone function
FEATURES Single chip CMOS construction Floating decimal point direct drive Overflow indication: chip oscillator components Auto Power Accumulating memory: Bare chip available Direct type
CONNECTION
ABSOLUTE MAXIMUM RATINGS 25oC Characteristic Terminal Voltage Operating Temperature Storage Temperature Symbol Tstg Value Unit
IZ1229
ELECTRICAL CHARACTERISTICS 25oC, 1.5V, unless otherwise specified)
Characteristic Operating Voltage Input Voltage (pins FDISB, EXT) Input Current (pins FDISB, EXT) Input Current (pins Output Voltage (pins a1÷a11, b1÷b10, c1÷c10, H1÷H3) Display Frequency Touch Tone Output Drive Current Supply Current
Symbol IIH1 IIL1 IIH2 IIL2 IOFF IDIS
Test Condition
Unit
VCC; APODISB FDISB Without load Without load Without load 1.3V, Display =1.0V, APODISB FDISB =0.5V, APODISB FDISB 1.5V Display 1.3V, Ddisplay 2.80 1.30 2.95 1.50 1.70 0.20
IZ1229
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 touch tone indicator 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. Memory protection error detection, memory contents present before error detection protected. Memory indication memory content zero, indicated sign-digit position.
IZ1229
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.
b10a10 b9a9 b8a8 b7a7 b6a6 b5a5 b4a4 b3a3 b2a2 b1a1
Direct with IZ1229
TOUCH TONE
When power touch tone function enable beep sound with f=2KHz generated output during 125ms sign displayed LCD. Selection touch tone function toggled touch tone key. 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
)PIHC( 9221ZI
APPLICATION CIRCUIT (direct LCD)
IZ1229
V5.1
C/NO
C/NO
NOTE1:
Protection Diode Protection Resistor (0.5 ~1.5K)
APODISB STATE
ENABLE AUTO POWER CONDITION DISABLE
IZ1229
DIAGRAM
)0,0
LOCATION
Name FDIS APOD ON/C Description Piezo Output External Clock FOSC Disable Disable input input input Input Power Supply COM1 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 -1124 -939 -759 -541 -329 -149 1061 1161 1161 1161 1161 1161 1161 1161 1161 1161 1161 1161 1161 -1181 -1236 -1236 -1236 -1236 -1236 -1236 -1236 -1236 -1236 -1236 -1236 -1076 -916 -746 -461 -276 1034 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 Display output COM3 COM2 Ground Capacitor terminal Capacitor terminal Capacitor terminal -134 -294 -474 -639 -819 -984 -1149 -1169 -1169 -1169 -1169 -1169 -1169 -1169 -1169 -1169 -1169 1244 1244 1244 1244 1244 1244 1244 1244 1244 1244 1244 1244 1224 1074 -306 -611 -866
APO: Output Power
tinU ezis 0472 0952 :ezis pihC MARGAID 9221ZI
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