MC908AB32CFUE Datasheet, PDF (275/392 Pages) Freescale Semiconductor, Inc – Microcontrollers

Serial Communications Interface Module (SCI)
15.9.7 SCI Baud Rate Register
The baud rate register (SCBR) selects the baud rate for both the receiver
and the transmitter.
Address:
Read:
Write:
Reset:
$0019
Bit 7
0
6
5
SCP1
0
0
= Unimplemented
4
SCP0
0
3
2
1
R
SCR2 SCR1
0
0
0
R = Reserved
Figure 15-16. SCI Baud Rate Register (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 15-6. Reset clears SCP1 and SCP0.
Table 15-6. SCI Baud Rate Prescaling
SCP1 and 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 15-7. Reset clears SCR2–SCR0.
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor
Serial Communications Interface Module (SCI)
Technical Data
275