C8051F91X-C8051F90X View Datasheet(PDF) - Silicon Laboratories
Part Name
Description
MFG CO.
C8051F91X-C8051F90X
Silicon Laboratories
C8051F91X-C8051F90X Datasheet PDF : 318 Pages
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C8051F91x-C8051F90x
SFR Definition 26.5. PCA0L: PCA Counter/Timer Low Byte
Bit
7
6
5
4
3
2
1
0
Name
PCA0[7:0]
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
SFR Page = 0x0; SFR Address = 0xF9
Bit Name
Function
7:0 PCA0[7:0] PCA Counter/Timer Low Byte.
The PCA0L register holds the low byte (LSB) of the 16-bit PCA Counter/Timer.
Note: When the WDTE bit is set to 1, the PCA0L register cannot be modified by software. To change the contents of
the PCA0L register, the Watchdog Timer must first be disabled.
SFR Definition 26.6. PCA0H: PCA Counter/Timer High Byte
Bit
7
6
5
4
3
2
1
0
Name
PCA0[15:8]
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
SFR Page = 0x0; SFR Address = 0xFA
Bit Name
Function
7:0 PCA0[15:8] PCA Counter/Timer High Byte.
The PCA0H register holds the high byte (MSB) of the 16-bit PCA Counter/Timer.
Reads of this register will read the contents of a “snapshot” register, whose contents
are updated only when the contents of PCA0L are read (see Section 26.1).
Note: When the WDTE bit is set to 1, the PCA0H register cannot be modified by software. To change the contents of
the PCA0H register, the Watchdog Timer must first be disabled.
310
Rev. 1.0
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