C8051F336_08 Datasheet, PDF (219/227 Pages) Silicon Laboratories – Mixed-Signal Byte-Programmable EPROM MCU

C8051F336/7/8/9
SFR Definition 25.5. 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 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 25.6. 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 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 25.1).
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.
Rev.1.0
219