uPD789074 Subseries 8-Bit Single-Chip Microcontrollers UD - Home

CHAPTER 1 GENERAL1.9 Overview of FunctionsItemPart NumberµPD789071µPD789071(A)µPD789072µPD789072(A)µPD789074µPD789074(A)µPD78F9076Internal memoryROMMask ROMFlash memory2 KB 4 KB 8 KB 16 KBHigh-speed RAMMinimum instruction execution timeGeneral-purpose registersInstruction set256 bytes0.2/0.8 µs (@10.0 MHz, VDD = 4.5 to 5.5 V operation with system clock)8 bits × 8 registers• 16-bit operations• Bit manipulations (such as set, reset, and test)I/O ports CMOS I/O: 24Serial interfaceSwitchable between 3-wire serial I/O and UART modes: 1 channelTimers • 16-bit timer: 1 channel• 8-bit timer/event counter: 1 channel• Watchdog timer:1 channelTimer outputs 2Vectored interruptMaskable Internal: 5, external: 3sources Non-maskable Internal: 1Power supply voltageOperating ambient temperatureVDD = 1.8 to 5.5 VTA = −40 to +85°CPackage 30-pin plastic SSOP (7.62 mm (300))The outline of the timers are as follows.16-Bit Timer 908-Bit Timer/Event Counter80Watchdog TimerOperatingmodeFunctionInterval timer − 1 channel 1 channel NoteExternal event counter − 1 channel −Timer outputs 1 1 −PWM outputs − 1 −Square-wave outputs − 1 −Buzzer outputs 1 − −Capture 1 input − −Interrupt sources 1 1 2Note The watchdog timer provides a watchdog timer function and interval timer function. Use either of thefunctions.28User’s Manual U14801EJ3V1UD