12CHAPTER 1 OUTLINE1.8 Outline of FunctionPart NumberμPD78081μPD78082μPD78083ItemInternal memory ROM Mask ROM PROM8 Kbytes 16 Kbytes 24 KbytesNoteHigh-speed RAM 256 bytes 384 bytes 512 bytesNoteMemory space 64 KbytesGeneral register 8 bits × 32 registers (8 bits × 8 registers × 4 banks)Instruction cycle Instruction execution time variable function is integrated.0.4 μs/0.8 μs/1.6 μs/3.2 μs/6.4 μs/12.8 μs (@5.0-MHz operation with main system clock)Instruction set • 16-bit operation• Multiply/divide (8 bits × 8 bits, 16 bits ÷ 8 bits)• Bit manipulation (set, reset, test, Boolean operation)• BCD adjust, etc.I/O ports Total : 33• CMOS input : 1• CMOS input/output : 32A/D converter • 8-bit resolution × 8 channelsSerial interface • 3-wire serial I/O/UART mode selectable: 1 channelTimer • 8-bit timer/event counter: 2 channels• Watchdog timer: 1 channelTimer output 2 pins (8-bit PWM output enable)Clock output 19.5 kHz, 39.1 kHz, 78.1 kHz, 156 kHz, 313 kHz, 625 kHz, 1.25 MHz, 2.5 MHz,and 5.0 MHz (@ 5.0-MHz operation with main system clock)Buzzer output 1.2 kHz, 2.4 kHz, 4.9 kHz, and 9.8 kHz(@ 5.0-MHz operation with main system clock)Vectored Maskable Internal : 8 external : 3interrupt Non-maskable Internal : 1source Software 1Supply voltage V DD = 1.8 to 5.5 VOperating ambient temperature T A = –40 to +85°CPackage • 42-pin plastic shrink DIP (600 mil)• 44-pin plastic QFP (10 × 10 mm)• 42-pin ceramic shrink DIP (with window) (600 mil) (μPD78P083 only)Note Internal PROM and high-speed RAM capacities can be changed by setting the internal memory sizeswitching register (IMS).
