STC micro STC8A8K64D4 Series - Clock Selection Register(MCLKOCR)

STC8A8K64D4 Series Manual
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10
P7.4
P7.0
P7.1
P7.2
P7.3
11
P3.5
P3.3
P3.2
P3.1
P3.0
SPI_S[1:0]SPI pin selection bits
SPI_S[1:0]
SS
MOSI
MISO
SCLK
00
P1.2
P1.3
P1.4
P1.5
01
P2.2
P2.3
P2.4
P2.5
10
P7.4
P7.5
P7.6
P7.7
11
P3.5
P3.4
P3.3
P3.2
3.1.3 Peripheral port switch register 2(P_SW2) (for UART2/3/4, I2C,
Comparator output switching)
Symbol
Address
B7
B6
B5
B4
B3
B2
B1
B0
P_SW2
BAH
EAXFR
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I2C_S[1:0]
CMPO_S
S4_S
S3_S
S2_S
EAXFRExtended RAM area Special Function Register (XFR) access control register
0: Access to XFR is prohibited
1: Enable access to XFR.
When XFR needs to be accessed, EAXFR must be set to 1 before XFR can be read or written properly
I2C_S[1:0]I
2
C pin selection bits
I2C_S[1:0]
SCL
SDA
00
P1.5
P1.4
01
P2.5
P2.4
10
P7.7
P7.6
11
P3.2
P3.3
CMPO_SComparator output pin selection bit
CMPO_S
CMPO
0
P3.4
1
P4.1
S4_SUART4 pin selection bit
S4_S
RxD4
TxD4
0
P0.2
P0.3
1
P5.2
P5.3
S3_SUART3 pin selection bit
S3_S
RxD3
TxD3
0
P0.0
P0.1
1
P5.0
P5.1
S2_SUSART2 pin selection bit
S2_S
RxD2
TxD2
0
P1.0
P1.1
1
P4.0
P4.2
3.1.4 Clock selection register(MCLKOCR)
Symbol
Address
B7
B6
B5
B4
B3
B2
B1
B0
MCLKOCR
FE05H
MCLKO_S
MCLKODIV[6:0]
MCLKO_SMain clock out pin selection bit
MCLKO_S
MCLKO
0
P5.4
1
P1.6