MC68HC705C8A Datasheet, PDF (134/222 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Communications Interface (SCI)
10.6.5 Baud Rate Register
The baud rate register shown in Figure 10-9 selects the baud rate for
both the receiver and the transmitter.
Address: $000D
Bit 7
6
5
4
3
2
1
Read:
Write:
SCP1 SCP0
SCR2 SCR1
Reset: U
U
0
0
U
U
U
= Unimplemented
U = Unaffected
Figure 10-9. Baud Rate Register (Baud)
Bit 0
SCR0
U
SCP1 and SCP0 — SCI Prescaler Select Bits
These read/write bits control prescaling of the baud rate generator
clock, as shown in Table 10-1. Resets clear both SCP1 and SCP0.
Table 10-1. Baud Rate Generator Clock Prescaling
SCP[1:0]
00
01
10
11
Baud Rate Generator Clock
Internal clock ÷ 1
Internal clock ÷ 3
Internal clock ÷ 4
Internal clock ÷ 13
Technical Data
134
Serial Communications Interface (SCI)
MC68HC705C8A — Rev. 2.0
MOTOROLA