TC83220-0019

The TC83220-0019 is a kind of printing/display calculator circuit. It is 10- or 12-digit calculator on single-chip CMOS LSI. The TC83220-0019 can drive the printing machine with magnet driver circuit, and can drive the fluorescent display tube with DC-DC converter. It contains a 4K-word ROM, a 256*4-bit RAM.

There are some electrical features of TC83220-0019 as follows: (1)P-MOS output buffer with pull down resistor for direct driving of fluorescent display tube; (2)oscillator/clock generator internal to chip; (3)key board encoding internal to chip; (4)shrink dual in line package; (5)protection: double depression of keys will be inoperative; in the overflow condtion, all key except "C", "C/CE", "CE", "FEED", "" key are inoperative; key bounching protection (at 4 MHz clock): key read in: 15 ms; key off: 40 ms.

The following is about the maximum ratings (VSS=0 V ) of TC83220-0019: (1)supply voltage, VDD: -0.5 to 7 V; (2)supply voltage, VKK: -40 to +0.5 V; (3)input voltage, VIN: -35 to VDD+0.5 V; (4)output voltage, VOUT: -3.5 to VDD+0.5 V; (5)output current, IOUT: -10 mA; (6)power dissipation (Topr=70), PD: 600 mW; (7)soldering temperature, Tsld: 260 (10s); (8)storage temperature, Tstg: -55 to 125; (9)operating temperature, Topr: 0 to 40.

The last one is about the recommended operating conditions (VSS=0 V) of TC83220-0019: (1)operating temperature, Topr: 0 to 40; (2)supply voltage, VDD: 4.5 to 6 V; (3)supply voltage (FL), VKK: -30 to -15 V; (4)supply voltage (hold), VDDH: 2 to 6 V; (5)input high voltage (except Schmitt circuit input), VIH1: VDD*0.7 V min and VDD V max at VDD4.5 V; (6)input high voltage (Schmitt circuit input), VIH2: VDD*0.75 V min and VDD V max at VDD4.5 V; (7)input high voltage , VIH3: VDD*0.9 V min and VDD V max at VDD<4.5 V.