MC9S08QD2MPS FREESCALE [Freescale Semiconductor, Inc], MC9S08QD2MPS Datasheet - Page 166
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MC9S08QD2MPS
Manufacturer Part Number
MC9S08QD2MPS
Description
8-Bit HCS08 Central Processor Unit (CPU)
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S08QD2MPS.pdf
(202 pages)
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Development Support
12.2.3
BDC commands are sent serially from a host computer to the BKGD pin of the target HCS08 MCU. All
commands and data are sent MSB-first using a custom BDC communications protocol. Active background
mode commands require that the target MCU is currently in the active background mode while
non-intrusive commands may be issued at any time whether the target MCU is in active background mode
or running a user application program.
Table 12-1
meaning of each command.
Coding Structure Nomenclature
This nomenclature is used in
166
SPEED-UP PULSE
PERCEIVED START
TO BKGD PIN
TARGET MCU
(TARGET MCU)
HOST DRIVE
DRIVE AND
BDC CLOCK
OF BIT TIME
BKGD PIN
shows all HCS08 BDC commands, a shorthand description of their coding structure, and the
BDC Commands
Figure 12-4. BDM Target-to-Host Serial Bit Timing (Logic 0)
Table 12-1
MC9S08QD4 Series MCU Data Sheet, Rev. 3
10 CYCLES
HOST SAMPLES BKGD PIN
to describe the coding structure of the BDC commands.
10 CYCLES
HIGH-IMPEDANCE
SPEEDUP
PULSE
EARLIEST START
OF NEXT BIT
Freescale Semiconductor
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