mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 174

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Monitor ROM (MON)
13.4.6 Baud Rate
Technical Data
172
Description
Operand
Data Returned
Opcode
Command Sequence
Monitor baud rate (4.9152 MHz)
Monitor baud rate (4.194 MHz)
Executes RTI instruction
None
None
$28
Table 13-8. RUN (Run User Program) Command
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 MUL7–MUL4 bits in the PLL programming register
(PPG). (See
Table 13-9. Monitor Baud Rate Selection
SENT TO
MONITOR
ECHO
Section 9. Clock Generator Module
4800
4096
1
Monitor ROM (MON)
RUN
9600
8192
2
VCO Frequency Multiplier (N)
14,400
12,288
RUN
3
19,200
16,384
4
Freescale Semiconductor
24,000
20,480
(CGM).)
5
MC68HC08QA24
28,800
24,576
6