MC68HC812A4 Datasheet, PDF (158/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

Clock Module
10.5.4 Peripheral Clock Divider Chains
Figure 10-4, Figure 10-5, and Figure 10-6 summarize the peripheral
clock divider chains.
MCLK
SCI0 BAUD RATE
GENERATOR
( 1 TO 8191)
÷ 16
SCI1 BAUD RATE
GENERATOR
( 1 TO 8191)
÷ 16
÷ 8192
REGISTER: RTICTL
BITS:
RTR[2:1:0]
0:0:0
SCI0 RECEIVE
BAUD RATE
(16X)
SCI0 TRANSMIT
BAUD RATE
(1X)
0:0:1
÷2
0:1:0
÷2
0:1:1
÷2
1:0:0
SCI1 RECEIVE
BAUD RATE
(16X)
SCI1 TRANSMIT
BAUD RATE
(1X)
÷2
1:0:1
÷2
1:1:0
÷2
1:1:1
REGISTER: COPCTL
BITS:
CR[2:1:0]
0:0:0
0:0:1
÷4
0:1:0
÷4
0:1:1
÷4
1:0:0
÷4
1:0:1
÷4
1:1:0
÷4
1:1:1
TO RTI
Figure 10-4. Clock Chain for SCI0, SCI1, RTI, and COP
TO COP
MC68HC812A4 — Rev. 3.0
158
Clock Module
Advance Information
MOTOROLA