s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 276

• Manufacturer Part Number: s908ab32ag0cfue
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Serial Communications Interface
Technical Data
276
Use this formula to calculate the SCI baud rate:
where:
This makes the formula:
Table 15-8
4.9152MHz CGMXCLK.
SCI clock source = CGMXCLK
PD = prescaler divisor
BD = baud rate divisor
(See
Serial Communications Interface Module (SCI)
9.5.6 Crystal Output Frequency Signal
SCR2, SCR1, and SCR0
shows the SCI baud rates that can be generated with a
baud rate
baud rate
Table 15-7. SCI Baud Rate Selection
000
001
010
011
100
101
110
111
=
=
SCI clock source
-------------------------------------------- -
----------------------------------- -
64 PD BD
CGMXCLK
64 PD BD
×
×
×
×
Divisor (BD)
Baud Rate
MC68HC908AB32
128
Freescale Semiconductor
16
32
64
1
2
4
8
(CGMXCLK).)
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Rev. 1.1