MC68HC908AS60MFN MOTOROLA [Motorola, Inc], MC68HC908AS60MFN Datasheet - Page 199

• Manufacturer Part Number: MC68HC908AS60MFN
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

13.4.6 Baud Rate
13.4.7 Security
MC68HC908AS60 — Rev. 1.0
MOTOROLA
Description
Operand
Data Returned
Opcode
Command Sequence
None
None
$28
Executes RTI instruction
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 MUL[7:4] bits in the PLL programming register (PPG).
See
A security feature discourages unauthorized reading of FLASH locations
while in monitor mode. The host can bypass the security feature at
monitor mode entry by sending eight security bytes that match the bytes
at locations $FFF6–$FFFD. Locations $FFF6–$FFFD contain
user-defined data.
4.9152 MHz
Baud Rate
4.194 MHz
Freescale Semiconductor, Inc.
Monitor
Section 10. Clock Generator Module
For More Information On This Product,
SENT TO
MONITOR
ECHO
Go to: www.freescale.com
Table 13-9. Monitor Baud Rate Selection
Monitor ROM (MON)
4800
4096
1
RUN
9600
8192
2
RUN
VCO Frequency Multiplier (N)
14,400
12,288
3
(CGM).
19,200
16,384
4
Functional Description
Monitor ROM (MON)
24,000
20,480
5
Technical Data
28,800
24,576
6
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