tc83220-0020 TOSHIBA Semiconductor CORPORATION, tc83220-0020 Datasheet - Page 2

• Manufacturer Part Number: tc83220-0020
• Description: Toshiba Cmos Digital Integrated Circuit Silicon Monolithic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

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Electrical Features
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Protection
Function Select
Speed of Calculation (at 4 MHz clock)
Kinds of lock key: “NP” printing mode selectable switch.
Duty of display: Duty = 1/17.77
Leading zero suppression
Trailing zero suppression
Tax calculation: +TAX
P-MOS output buffer with pull down resistor for direct driving of fluorescent display tube.
Oscillator/clock generator internal to chip.
Key board encoding internal to chip.
Dual in line package.
(1)
(2)
(1)
(1)
(2)
(3)
(4)
(5)
In the overflow condition, all key except “C”, “C/CE”, “CE”, “Feed”, “→” key are inoperative.
Key bouncing protection (at 4 MHz clock)
Key read in: 15 ms
Key off: 40 ms
“10/12” selectable with auto power off mode
ON……….. 10-digits calculated
OFF……… 12-digits calculated
Addition
Multiplication
Division
Memory calculation
Percentage calculation
Changing lock key from
Changing lock key from
Depression of
tax.
Depression of
tax.
−TAX
SET
CAL selects normal calculation mode.
“Σ” summation mode selectable switch.
“5/4” “CUT” “UP” rounding switch.
Fixed point mode selectable switch.
“0”, “1”, “2”, “3”, “4”, “6”, “F”, “A”.
“IC+” “IC±” item counter mode selectable switch.
“GT” grand total memory selectable switch.
“SET”, “CAL” tax memory selectable switch.
selects set mode for tax rate.
key is calculation for included tax.
key is calculation for excluded tax.
+TAX
−TAX
999999999999 ÷ 1 M + 108.8 ms
999999999999 ÷ 1 = 100.6 ms
1 × 999999999999%
× 999999999999 =
following data key at CAL mode performs the calculating included
following data key at CAL mode performs the calculating excluded
SET
CAL
1 + 1 +
to
to
2
CAL stores number of display to tax memory.
SET
31.2 ms
26.8 ms
35.2 ms
recalls tax rate to display from tax memory.
TC83220-0020
2003-02-28