MC68HC812A4 Datasheet, PDF (191/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

Standard Timer Module
Registers and Reset Initialization
TFFCA — Timer Fast Flag Clear-All Bit
When TFFCA is set:
– An input capture read or a write to an output compare channel
clears the corresponding channel flag, CnF.
– Any access of the timer counter registers, TCNTH/L, clears the
TOF flag.
– Any access of the PA counter registers, PACNTH/L, clears
both the PAOVF and PAIF flags in the PAFLG register.
When TFFCA is clear, writing logic 1s to the flags clears them.
1 = Fast flag clearing
0 = Normal flag clearing
WRITE TFLG1 REGISTER
DATA BIT n
CnF
TFFCA
READ TCx REGISTERS
WRITE TCx REGISTERS
Figure 12-11. Fast Clear Flag Logic
CLEAR
CnF FLAG
Advance Information
MOTOROLA
Standard Timer Module
MC68HC812A4 — Rev. 3.0
191