MC68HC908AT32 Datasheet, PDF (123/378 Pages) Freescale Semiconductor, Inc – Microcontrollers

Table 12-8. RUN (Run User Program) Command
Description
Executes RTI instruction
Operand
None
Data Returned
None
Opcode
$28
Command Sequence
SENT TO
MONITOR
RUN
RUN
ECHO
Functional Description
12.3.6 Baud Rate
With a 4.9152-MHz crystal and the PTC3 pin at logic 1 during reset, data is transferred between the
monitor and host at 4800 baud. If the PTC3 pin is at logic 0 during reset, the monitor baud rate is 9600.
When the CGM output, CGMOUT, is driven by the PLL, the baud rate is determined by the MUL[7:4] bits
in the PLL programming register (PPG). See Chapter 8 Clock Generator Module (CGM).
Table 12-9. Monitor Baud Rate Selection
Monitor
Baud Rate
4.9152 MHz
4.194 MHz
1
4800
4096
VCO Frequency Multiplier (N)
2
3
4
5
9600
14,400 19,200 24,000
8192
12,288 16,384 20,480
6
28,800
24,576
MC68HC908AT32 Data Sheet, Rev. 3.1
Freescale Semiconductor
123