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UPD780034A Datasheet(PDF) 4 Page - NEC |
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UPD780034A Datasheet(HTML) 4 Page - NEC |
4 / 52 page 4 µPD780232 Data Sheet U13415EJ2V0DS FUNCTION OVERVIEW Item Function Internal memory ROM 16 KB High-speed RAM 768 bytes Buffer RAM 32 bytes VFD display RAM 112 bytes General-purpose register 8 bits × 32 registers (8 bits × 8 registers × 4 banks) Minimum instruction execution time • On-chip minimum instruction execution time variable function • 0.4 µs/0.8 µs/1.6 µs/3.2 µs/6.4 µs (@ 5.0 MHz operation with system clock) Instruction set • Multiply/divide (8 bits × 8 bits, 16 bits ÷ 8 bits) • Bit manipulation (set, reset, test, Boolean operation) I/O ports Total: 40 (including alternate-function pins for VFD) • CMOS I/Os: 11 • P-ch open-drain I/Os: 13 • P-ch open-drain outputs: 16 VFD controller/driver Total of display outputs: 53 • 15 mA display current: 20 • 5 mA display current: 33 A/D converter • 8-bit resolution × 4 channels • Power supply voltage: AVDD = 4.5 to 5.5 V Serial interface • 3-wire serial mode (automatic transmit/receive function): 1 channel • 2-wire serial mode (transmit only): 1 channel Timer • 8-bit remote control timer: 1 channel • 8-bit timer: 2 channels • Watchdog timer: 1 channel Vectored interrupt Maskable Internal: 10, external: 2 sources Non-maskable Internal: 1 Software 1 Power supply voltage VDD = 4.5 to 5.5 V Package 80-pin plastic QFP (14 × 14) |
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Similar Description - UPD780034A |
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