參數(shù)資料
型號： ST7FLU05MAE
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
封裝： 0.150 INCH, LEAD FREE, PLASTIC, SOP-8
文件頁數(shù)： 47/124頁
文件大小： 2186K
代理商： ST7FLU05MAE
Obsolete
Product(s)
- Obsolete
Product(s)
ST7LUS5, ST7LU05, ST7LU09
Supply, reset and clock management
29/124
6.2
Register description
6.2.1
Main clock control/status register (MCCSR)
6.2.2
RC control register (RCCR)
MCCSR
Reset value: 0000 0000 (00h)
7
654
32
10
Reserved
MCO
SMS
-R/W
R/W
Table 7.
MCCSR register description
Bit
Name
Function
7:2
-
Reserved, must be kept cleared.
1MCO
Main clock out enable
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
0SMS
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 = fOSCC)
1: Slow mode (fCPU = fOSCC/32)
RCCR
Reset value: 1111 1111 (FFh)
7
654
32
10
CR[9:2]
R/W
Table 8.
RCCR register description
Bit
Name
Function
7:0 CR[9:2]
RC oscillator frequency adjustment bits
These bits, as well as CR[1:0] bits in the SICSR register must be written
immediately after reset to adjust the RC oscillator frequency and to obtain the
required accuracy. The application can store the correct value for each voltage
range in Flash memory and write it to this register at start-up.
00h = maximum available frequency
FFh = lowest available frequency
Note: To tune the oscillator, write a series of different values in the register until the
correct frequency is reached. The fastest method is to use a dichotomy starting with
80h.
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