参数资料
型号: m789436
厂商: NEC Corp.
元件分类: 8位微控制器
英文描述: 8-Bit Single-Chip Microcontrollers
中文描述: 8位单芯片微控制器
文件页数: 6/144页
文件大小: 1378K
代理商: M789436
User’s Manual U15075EJ1V0UM00
103
CHAPTER 5 CLOCK GENERATOR
5.1 Clock Generator Functions
The clock generator generates the clock to be supplied to the CPU and peripheral hardware.
The following two types of system clock oscillators are used.
Main system clock oscillator
This circuit oscillates at 1.0 to 5.0 MHz. Oscillation can be stopped by executing the STOP instruction or
setting the processor clock control register (PCC).
Subsystem clock oscillator
This circuit oscillates at 32.768 kHz. Oscillation can be stopped by the suboscillation mode register (SCKM).
5.2 Clock Generator Configuration
The clock generator includes the following hardware.
Table 5-1. Configuration of Clock Generator
Item
Configuration
Control registers
Processor clock control register (PCC)
Suboscillation mode register (SCKM)
Subclock control register (CSS)
Oscillators
Main system clock oscillator
Subsystem clock oscillator
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