Chapter 1 Overview; Features; Application Fields - NEC 78K0S/KA1+ User Manual

1.1 Features

O Minimum instruction execution time selectable from high speed (0.2
10 MHz)
O General-purpose registers: 8 bits × 8 registers
O ROM and RAM capacities
Part number
µ
PD78F9221
µ
PD78F9222
O On-chip power-on clear (POC) circuit and low voltage detector (LVI)
O On-chip watchdog timer (operable on internal low-speed internal oscillator clock)
O I/O ports: 17
O Timer: 4 channels
• 16-bit timer/event counter:
• 8-bit timer:
• Watchdog timer:
O Serial interface: UART (LIN (Local Interconnect Network) bus supported) 1 channel
O 10-bit resolution A/D converter: 4 channels
O Supply voltage: V
DD
O Operating temperature range: T
Note Use this product in a voltage range of 2.2 to 5.5 V because the detection voltage (V
clear (POC) circuit is 2.1 V ±0.1 V.

1.2 Application Fields

O Automotive electronics
• System control of body instrumentation system (such as power windows and keyless entry reception)
• Sub-microcontroller of control system
O Household appliances
• Electric toothbrushes
• Electric shavers
O Toys
O Industrial equipment
• Sensor and switch control
• Power tools

CHAPTER 1 OVERVIEW

Item
Program Memory (Flash Memory)
2 KB
4 KB
1 channel
2 channels
1 channel
Note
= 2.0 to 5.5 V
= −40 to +85°C ((T) product, (S) product, (R) product, (A) product)
A
= −40 to +125°C ((T2) product, (A2) product)
T
A
User's Manual U16898EJ3V0UD
µ µ
s) to low speed (3.2 s) (with CPU clock of
Memory (Internal High-Speed RAM)
128 bytes
256 bytes
POC
) of the power-on
15