MC68HC908BD48 Datasheet, PDF (124/290 Pages) Freescale Semiconductor, Inc – Microcontrollers

Monitor ROM (MON)
Table 9-8. RUN (Run User Program) Command
Description Executes RTI instruction
Operand None
Data
Returned
None
Opcode $28
Command Sequence
SENT TO
MONITOR
RUN
RUN
ECHO
9.4.6 Baud Rate
The communication baud rate is controlled by crystal frequency and the
state of the PTC3 pin upon entry into monitor mode. When PTC3 is high,
the divide by ratio is 1024. If the PTC3 pin is at logic zero upon entry into
monitor mode, the divide by ratio is 512.
Table 9-9. Monitor Baud Rate Selection
Crystal Frequency
19.66 MHz
9.83 MHz
9.83 MHz
PTC3 Pin
0
0
1
Baud Rate
19200 bps
9600 bps
4800 bps
Technical Data
124
Monitor ROM (MON)
MC68HC908BD48 — Rev. 1.0
MOTOROLA