mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 289

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Use this formula to calculate the SCI baud rate:
where:
Table 16-8
4.9152-MHz bus clock when f
SCI clock source = f
(selected by SCIBDSRC bit in CONFIG2 register)
PD = prescaler divisor
BD = baud rate divisor
Serial Communications Interface (SCI)
SCR2, SCR1, and SCR0
shows the SCI baud rates that can be generated with a
baud rate
Table 16-7. SCI Baud Rate Selection
000
001
010
011
100
101
110
111
BUS
=
or CGMXCLK
SCI clock source
-------------------------------------------- -
BUS
64 PD BD
×
is selected as SCI clock source.
×
Serial Communications Interface (SCI)
Baud Rate Divisor (BD)
128
16
32
64
1
2
4
8
I/O Registers
Data Sheet
289