参数资料
型号: ST7PLUSA5B6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP8
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-8
文件页数: 63/136页
文件大小: 1705K
代理商: ST7PLUSA5B6
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
Supply, reset and clock management
ST7LITEUS2, ST7LITEUS5
6.3.4
AVD Threshold Selection register (AVDTHCR)
Reset value: 0000 0011 (03h)
6.3.5
Clock Controller Control/Status register (CKCNTCSR)
Read/Write
Reset value: 0000 1001 (09h)
7
0
CK2
CK1
CK0
0
AVD1
AVD0
Read / Write
Bits 7:5 CK[2:0] Internal RC Prescaler Selection
These bits are set by software and cleared by hardware after a reset. These bits
select the prescaler of the internal RC oscillator. See Figure 10 on page 34 and
Bits 4:2 Reserved, must be kept cleared.
Bits 1:0 AVD Threshold Selection bits. Refer to Section 7.4: System integrity management
Table 6.
Internal RC prescaler selection bits(1)
1.
If the internal RC is used with a supply operating range below 3.3 V, a division ratio of at least 2 must be
enabled in the RC prescaler.
CK2
CK1
CK0
fOSC
00
0
fRC
00
1
fRC/2
01
0
fRC/4
01
1
fRC/8
10
0
fRC/16
7
0
0000
AWU_FLAG
RC_
FLAG
0RC/AWU
Read / Write
Bits 7:4 Reserved, must be kept cleared.
Bit 3 AWU_FLAG AWU Selection
This bit is set and cleared by hardware
0: No switch from AWU to RC requested
1: AWU clock activated and temporization completed
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