User’s Manual U18172EJ2V0UD14CHAPTER 1 OVERVIEW1.1 FeaturesO 78K0S CPU coreO ROM and RAM capacitiesItemPart number Program Memory (Flash Memory) Memory (Internal High-Speed RAM)μPD78F9200 1 KBμPD78F9201 2 KBμPD78F9202 4 KB128 bytesO Minimum instruction execution time: 0.2μs (with 10 MHz@4.0 to 5.5 V operation)O Clock• High-speed system clock … Selected from the following three sources- Ceramic/crystal resonator: 2 to 10 MHz- External clock: 2 to 10 MHz- High-speed internal oscillator: 8 MHz ±3% (−10 to +70°C), 8 MHz ±5% (−40 to +85°C)• Low-speed internal oscillator 240 kHz (TYP.) … Watchdog timer, timer clock in intermittent operationO I/O ports: 8 (CMOS I/O: 7, CMOS input: 1)O Timer: 3 channels• 16-bit timer/event counter: 1 channel … Timer output × 1, capture input × 2• 8-bit timer: 1 channel … PWM output × 1• Watchdog timer: 1 channel … Operable with low-speed internal oscillation clockO 10-bit resolution A/D converter: 4 channelsO On-chip power-on-clear (POC) circuit (A reset is automatically generated when the voltage drops to 2.1 V ±0.1 Vor below)O On-chip low voltage detector (LVI) circuit (An interrupt/reset (selectable) is generated when the detection voltageis reached)• Detection voltage: Selectable from ten levels between 2.35 and 4.3 VO Single-power-supply flash memory• Flash self programming enabled• Software protection function: Protected from outside party copying (no flash reading command)• Time required for writing by dedicated flash memory programmer: Approximately 3 seconds (4 KB)∗ Flash programming on mass production lines supportedO Safety function• Watchdog timer operated by clock independent from CPU… A hang-up can be detected even if the system clock stops• Supply voltage drop detectable by LVI… Appropriate processing can be executed before the supply voltage drops below the operation voltage• Equipped with option byte function… Important system operation settings set in hardwareO Assembler and C language supportedO Enhanced development environment• Support for full-function emulator (IECUBE), simplified emulator (MINICUBE2), and simulator
