tc83220-0020 TOSHIBA Semiconductor CORPORATION, tc83220-0020 Datasheet - Page 14

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

The Proposal of Outer Circuit for Tax Rate Holding with Back-Up Battery
~HOLD pin is pulled down in the LSI, but normally pulled up to V
~RESET pin is pulled up to V
Note 7: V
(1)
(2)
(3)
Note 8: V
V
Setting POWER SW to ON, V
Setting POWER SW from ON to OFF, V
Setting POWER SW to ON, V
1
2
Then calculator operates normally.
Under this connection, TAX RATE is held.
Then calculator operates normally with TAX RATE to be held.
= 3 V: Battery supply
= 5 V: AC supply
exhaustion of battery and abnormal operation.
1
(battery) should be supplied to the circuit after V
DD
.
2
2
is supplied to V
is supplied to V
1
is supplied to V
14
DD
DD
pin, and also to HOLD pin.
pin, and also to HOLD pin.
2
(AC) supply, because of prevention from
DD
DD
.
pin and V
SS
is supplied to HOLD pin.
TC83220-0020
2003-02-28