参数资料
型号: ST7PLUSA2M3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
封装: 0.150 INCH, ROHS COMPLIANT, PLASTIC, SOP-8
文件页数: 61/136页
文件大小: 1705K
代理商: ST7PLUSA2M3
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
Supply, reset and clock management
ST7LITEUS2, ST7LITEUS5
Figure 9.
Clock switching
6.3
Register description
6.3.1
Main Clock Control/Status register (MCCSR)
Reset value: 0000 0000 (00h)
Internal RC
AWU RC
Set RC/AWU
Poll AWU_FLAG until set
Internal RC
Reset RC/AWU
Poll RC_FLAG until set
AWU RC
7
0
000
MCO
SMS
Read / Write
Bits 7:2 Reserved, must be kept cleared.
Bit 1 MCO Main Clock Out enable bit
This bit is read/write by software and cleared by hardware after a reset. This bit
allows to enable the MCO output clock.
0: MCO clock disabled, I/O port free for general purpose I/O.
1: MCO clock enabled.
Bit 0 SMS Slow Mode select
This bit is read/write by software and cleared by hardware after a reset. This bit
selects the input clock fOSC or fOSC/32.
0: Normal mode (fCPU = fOSC )
1: Slow mode (fCPU = fOSC/32)
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