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MC68HC08AZ60A Datasheet, PDF (246/480 Pages) Motorola, Inc – Microcontrollers | |||
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Serial Communications Interface (SCI)
SCR2 â SCR0 â SCI Baud Rate Select Bits
These read/write bits select the SCI baud rate divisor as shown in
Table 16-10. Reset clears SCR2âSCR0.
Table 16-10. SCI Baud Rate Selection
SCR[2:1:0]
000
001
010
011
100
101
110
111
Baud Rate Divisor (BD)
1
2
4
8
16
32
64
128
Use the following formula to calculate the SCI baud rate:
Baud rate = 6----4-----Ã--f--CP---r--yD--s--t-a-Ã--l--B-----D---
where:
fCrystal = crystal frequency
PD = prescaler divisor
BD = baud rate divisor
Table 16-11 shows the SCI baud rates that can be generated with a
4.9152-MHz crystal.
Advance Information
246
Serial Communications Interface (SCI)
MC68HC08AZ60A â Rev 0.0
MOTOROLA
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