MC68HC812A4 Datasheet, PDF (193/342 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
12.6.8 Timer Control Registers 3 and 4
Address: $008A
Bit 7
6
5
4
3
2
1
Read:
EDG7B EDG7A EDG6B EDG6A EDG5B EDG5A EDG4B
Write:
Reset: 0
0
0
0
0
0
0
Figure 12-14. Timer Control Register 3 (TCTL3)
Bit 0
EDG4A
0
Address: $008B
Bit 7
6
5
4
3
2
1
Read:
EDG3B EDG3A EDG2B EDG2A EDG1B EDG1A EDG0B
Write:
Reset: 0
0
0
0
0
0
0
Figure 12-15. Timer Control Register 4 (TCTL4)
Bit 0
EDG0A
0
Read: Anytime
Write: Anytime
EDGnB, EDGnA — Input Capture Edge Control Bits
These eight bit pairs configure the input capture edge detector
circuits.
Table 12-2. Input Capture Edge Selection
EDGnB:EDGnA
Edge Selection
00
Input capture disabled
01
Input capture on rising edges only
10
Input capture on falling edges only
11
Input capture on any edge (rising or falling)
Advance Information
MOTOROLA
Standard Timer Module
MC68HC812A4 — Rev. 3.0
193