MC908AB32CFUE Datasheet, PDF (166/392 Pages) Freescale Semiconductor, Inc – Microcontrollers

Monitor ROM (MON)
Table 10-8. RUN (Run User Program) Command
Description Executes RTI instruction
Operand None
Data
Returned
None
Opcode $28
Command Sequence
SENT TO
MONITOR
RUN
RUN
ECHO
10.4.6 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 Section 9. Clock Generator Module (CGM).)
Table 10-9. 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
Technical Data
166
Monitor ROM (MON)
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor