Chapter 1 Overview; Features - NEC 78K0S/KU1+ User Manual

1.1 Features

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O 78K0S CPU core
O ROM and RAM capacities
Part number
µ
PD78F9200
µ
PD78F9201
µ
PD78F9202
O Minimum instruction execution time: 0.2
O Clock
• High-speed system clock ... Selected from the following three sources
- Ceramic/crystal resonator:
- External clock:
- High-speed internal oscillator:
• Low-speed internal oscillator 240 kHz (TYP.) ... Watchdog timer, timer clock in intermittent operation
O I/O ports: 8 (CMOS I/O: 7, CMOS input: 1)
O Timer: 3 channels
• 16-bit timer/event counter:
• 8-bit timer:
• Watchdog timer:
O 10-bit resolution A/D converter: 4 channels
O On-chip power-on-clear (POC) circuit (A reset is automatically generated when the voltage drops to 2.1 V ±0.1 V
or below)
O On-chip low voltage detector (LVI) circuit (An interrupt/reset (selectable) is generated when the detection voltage
is reached)
• Detection voltage: Selectable from ten levels between 2.35 and 4.3 V
O 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 supported
O 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 hardware
O Assembler and C language supported
O Enhanced development environment
• Support for full-function emulator (IECUBE), simplified emulator (MINICUBE2), and simulator
14

CHAPTER 1 OVERVIEW

Item
Program Memory (Flash Memory)
1 KB
2 KB
4 KB
µ
s (with 10 MHz@4.0 to 5.5 V operation)
2 to 10 MHz
2 to 10 MHz
8 MHz ±3% (−10 to +70°C), 8 MHz ±5% (−40 to +85°C)
1 channel ... Timer output × 1, capture input × 2
1 channel ... PWM output × 1
1 channel ... Operable with low-speed internal oscillation clock
User's Manual U18172EJ2V0UD
Memory (Internal High-Speed RAM)
128 bytes