MC68HC08AS32 Datasheet, PDF (271/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Serial Communications Interface (SCI)
I/O Registers
17.9.7 SCI Baud Rate Register
The baud rate register selects the baud rate for both the receiver and the
transmitter.
Address: $0019
Bit 7
6
5
4
3
2
1
Read:
R
Write:
R
SCP1 SCP0
R
SCR2 SCR1
Reset: 0
0
0
0
0
0
0
R = Reserved
Figure 17-13. SCI BAUD Rate Register 1 (SCBR)
Bit 0
SCR0
0
SCP1 and SCP0 — SCI Baud Rate Prescaler Bits
These read/write bits select the baud rate prescaler divisor as shown
in Table 17-8. Reset clears SCP1 and SCP0.
Table 17-8. SCI Baud Rate Prescaling
SCP1:SCP0
00
01
10
11
Prescaler Divisor (PD)
1
3
4
13
SCR2–SCR0 — SCI Baud Rate Select Bits
These read/write bits select the SCI baud rate divisor as shown in
Table 17-9. Reset clears SCR2:SCR0.
MC68HC08AS32 — Rev. 3.0
MOTOROLA
Serial Communications Interface (SCI)
Advance Information
271