
C8051F80x-83x
242
Rev. 1.0
SFR Address = 0xF9
SFR Address = 0xFA
SFR Definition 29.5. PCA0L: PCA0 Counter/Timer Low Byte
Bit
76543210
Name
PCA0[7:0]
Type
R/W
Reset
00000000
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 29.6. PCA0H: PCA0 Counter/Timer High Byte
Bit
76543210
Name
PCA0[15:8]
Type
R/W
Reset
00000000
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 29.1).
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.