Intel 8XC251SA User Manual page 412

8XC251SA, SB, SP, SQ USER'S MANUAL
CCON
PCA Timer/Counter Control Register. Contains the run control bit and overflow flag for the PCA
timer/counter, and the compare/capture flags for the five PCA compare/capture modules.
7
CF CR
Bit Bit
Number Mnemonic
7 CF
6 CR
5 —
4:0 CCF4:0
CH, CL
CH, CL Registers. These registers operate in cascade to form the 16-bit PCA timer/counter.
7
Bit Bit
Number Mnemonic
7:0 CH.7:0
CL.7:0
C-10
— CCF4
PCA Timer/Counter Overflow Flag:
Set by hardware when the PCA timer/counter rolls over. This generates
an interrupt request if the ECF interrupt enable bit in CMOD is set. CF
can be set by hardware or software but can be cleared only by software.
PCA Timer/Counter Run Control Bit:
Set and cleared by software to turn the PCA timer/counter on and off.
Reserved:
The value read from this bit is indeterminate. Write a zero to this bit.
PCA Module Compare/Capture Flags:
Set by hardware when a match or capture occurs. This generates a PCA
interrupt request if the ECCF x interrupt enable bit in the corresponding
CCAPM x register is set. Must be cleared by software.
High/Low Byte PCA Timer/Counter
High byte of the PCA timer/counter
Low byte of the PCA timer/counter
Address:
Reset State:
CCF3 CCF2
Function
Address:
Reset State:
Function
S:D8H
00X0 0000B
0
CCF1 CCF0
S:F9H
S:E9H
0000 0000B
0