MC68HC705C Motorola, MC68HC705C Datasheet - Page 135

• Manufacturer Part Number: MC68HC705C
• Description: HCMOS Microcontroller Unit
• Manufacturer: Motorola

MC68HC705C8A — Rev. 2.0
MOTOROLA
SCR2–SCR0 — SCI Baud Rate Select Bits
Table 10-3
frequencies of 2 MHz, 4 MHz, and 4.194304 MHz.
These read/write bits select the SCI baud rate, as shown in
SCR[2:1:0]
Table
Serial Communications Interface (SCI)
000
001
010
011
100
101
110
111
shows all possible SCI baud rates derived from crystal
10-2. Reset has no effect on the SCR2–SCR0 bits.
Table 10-2. Baud Rate Selection
SCI Baud Rate (Baud)
Prescaled clock
Prescaled clock
Prescaled clock
Prescaled clock
Prescaled clock
Prescaled clock
Prescaled clock
Prescaled clock
Serial Communications Interface (SCI)
128
32
64
16
1
2
4
8
SCI I/O Registers
Technical Data
135