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RM0016 Datasheet(PDF) 94 Page - STMicroelectronics

Part # RM0016
Description  STM8S Series and STM8AF Series 8-bit microcontrollers
PDF  467 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

RM0016 Datasheet(HTML) 94 Page - STMicroelectronics

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Clock control (CLK)
RM0016
94/467
DocID14587 Rev 14
9.9.6
Clock divider register (CLK_CKDIVR)
Address offset: 0x06
Reset value: 0x18
7
654
3210
Reserved
HSIDIV[1:0]
CPUDIV[2:0]
r
rwrw
rw
rwrw
Bits 7:5 Reserved, must be kept cleared.
Bits 4:3 HSIDIV[1:0]: High speed internal clock prescaler
These bits are written by software to define the HSI prescaling factor.
00: fHSI= fHSI RC output
01: fHSI= fHSI RC output/2
10: fHSI= fHSI RC output/4
11: fHSI= fHSI RC output/8
Bits 2:0 CPUDIV[2:0]: CPU clock prescaler
These bits are written by software to define the CPU clock prescaling factor.
000: fCPU=fMASTER
001: fCPU=fMASTER/2
010: fCPU=fMASTER/4
011: fCPU=fMASTER/8
100: fCPU=fMASTER/16
101: fCPU=fMASTER/32
110: fCPU=fMASTER/64
111: fCPU=fMASTER/128



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