TC83230-0015
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC83230-0015
TC83230-0015: Single-Chip CMOS LSI for Calculators with Printers
(applicable printer heads: M31/M31A manufactured by EPSON)
The TC83230-0015 LSI is a single-chip CMOS LSI for use in
calculators with printers.
It integrates I/O logic circuits necessary to configure a
calculator with 10- or 12-digit display, two-memory function,
two-tax function, serial printer used to print calculation results,
oscillator, and LCD drivers.
Features
Operational Features
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Print: 10 or 12 digits of data. (including decimal point.)
1 digit of floating minus sign, 1 digit of operational
symbol.
1-color printing (black).
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Display: 10 or 12 digits of data. (including punctuation in each digit.)
1 digit of floating minus sign, memory load, error symbol, grand total memory load, 3 digits of
commas.
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Decimal output: Decimal set lock key controls output format. Fixed decimal setting (鈥?鈥? 鈥?鈥? 鈥?鈥? 鈥?鈥? 鈥?鈥?
鈥?鈥?, full floating decimal, ADD mode and ADD2 mode.
Key-input buffer: 12 words
Operation methods: Addition and subtraction: By ARITHMETIC operation
Multiplication and division: By algebraic operation
Function: Four function, repeat multiplication and division, mixed calculation, percentage calculation,
percent discount and add-on calculation, memory calculation, delta percent calculation, add-mode
calculation, mark-up/down calculation, total calculation, constant calculation, tax calculation
Two-key rollover.
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Leading zero suppression
Weight: 1.52 g (typ.)
Protection
(1)
(2)
In the overflow condition, all key except 鈥淐鈥? 鈥淐/CE鈥? 鈥淐E鈥? 鈥淔eed鈥? 鈥溾啋鈥?key are inoperative.
Key chatter protection.
Auto-Clear at Power On
Auto-clear functions by connecting a capacitor to the RESET pin.
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2003-03-04