XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 152
XC68HC08KH12
Manufacturer Part Number
XC68HC08KH12
Description
MICROCONTROLLER
Manufacturer
Motorola
Datasheet
1.XC68HC08KH12.pdf
(262 pages)
- Current page: 152 of 262
- Download datasheet (3Mb)
Monitor ROM (MON)
10.4.1 Entering Monitor Mode
Advance Information
152
NOTE:
Table 10-1
If PTC3 is low upon monitor mode entry, CGMOUT is equal to the crystal
frequency. The bus frequency in this case is a divide-by-two of the input
clock. If PTC3 is high upon monitor mode entry, the bus frequency will
be a divide-by-four of the input clock.
Holding the PTC3 pin low when entering monitor mode causes a bypass
of a divide-by-two stage at the oscillator. The CGMOUT frequency is
equal to the CGMXCLK frequency, and the OSC1 input directly
generates internal bus clocks. In this case, the OSC1 signal must have
a 50% duty cycle at maximum bus frequency.
Enter monitor mode with the pin configuration shown above by pulling
RST low and then high. The rising edge of RST latches monitor mode.
Once monitor mode is latched, the values on the specified pins can
change.
Once out of reset, the MCU monitor mode firmware then sends a break
signal (10 consecutive logic zeros) to the host computer, indicating that
it is ready to receive a command. The break signal also provides a timing
reference to allow the host to determine the necessary baud rate.
Monitor mode uses different vectors for reset, SWI, and break interrupt.
The alternate vectors are in the $FE page instead of the $FF page and
allow code execution from the internal monitor firmware instead of user
code.
V
V
DD
DD
+ V
+ V
HI
HI
shows the pin conditions for entering monitor mode.
1
1
Monitor ROM (MON)
0
0
Table 10-1. Mode Selection
1
1
1
0
Monitor
Monitor
Mode
CGMXCLK ÷ 2
CGMXCLK
CGMOUT
MC68HC(7)08KH12
CGMOUT ÷ 2
CGMOUT ÷ 2
Frequency
MOTOROLA
—
Bus
Rev. 1.0
Related parts for XC68HC08KH12
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Motorola, Inc [VOLTAGE REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
3N2046367254 MOTOROLA SC (XSTRS/R F)
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MOTOROLA POWERPC 603e MICROPROCESSOR
Manufacturer:
Motorola
Part Number:
Description:
Motorola Semiconductor Datasheet Library
Manufacturer:
Motorola
Part Number:
Description:
SWITCHMODE Schottky Power Rectifier(POWERTAP III Package)
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
SWITCHMODE Schottky Power Rectifirer
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Search -----> MTE53N50E
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Hybrid Power Module
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
SCHOTTKY BARRIER RECTIFIER 200 AMPERES 60 VOLT
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
NPN SILICON POWER DARLINGTON TRANSISTOR
Manufacturer:
Motorola
Datasheet: