Datasheet

I/O Registers
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor 179
Table 11-8 shows the SCI baud rates that can be generated with a 4.9152-MHz bus clock when f
BUS
is
selected as SCI clock source.
Table 11-8. SCI Baud Rate Selection Examples
SCP1 and SCP0
Prescaler
Divisor (PD)
SCR2, SCR1,
and SCR0
Baud Rate
Divisor (BD)
Baud Rate
(f
BUS
= 4.9152 MHz)
00 1 000 1 76,800
00 1 001 2 38,400
00 1 010 4 19,200
00 1 011 8 9600
00 1 100 16 4800
00 1 101 32 2400
00 1 110 64 1200
00 1 111 128 600
01 3 000 1 25,600
01 3 001 2 12,800
01 3 010 4 6400
01 3 011 8 3200
01 3 100 16 1600
01 3 101 32 800
01 3 110 64 400
01 3 111 128 200
10 4 000 1 19,200
10 4 001 2 9600
10 4 010 4 4800
10 4 011 8 2400
10 4 100 16 1200
10 4 101 32 600
10 4 110 64 300
10 4 111 128 150
11 13 000 1 5908
11 13 001 2 2954
11 13 010 4 1477
11 13 011 8 739
11 13 100 16 369
11 13 101 32 185
11 13 110 64 92
11 13 111 128 46