mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 283

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
Infrared Serial Communications Interface Module (IRSCI)
Use this formula to calculate the SCI baud rate:
where:
Table 13-9
4.9152-MHz bus clock when f
SCI clock source = f
(selected by CKS bit)
PD = prescaler divisor
BD = baud rate divisor
SCR2, SCR1, and SCR0
shows the SCI baud rates that can be generated with a
baud rate
Table 13-8. SCI Baud Rate Selection
000
001
010
011
100
101
110
111
BUS
Infrared Serial Communications Interface Module (IRSCI)
=
or CGMXCLK
SCI clock source
-------------------------------------------- -
BUS
16 PD BD
×
is selected as SCI clock source.
×
Baud Rate Divisor (BD)
128
16
32
64
1
2
4
8
I/O Registers
Data Sheet
283