mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 366
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mc68hc912dg128
Manufacturer Part Number
mc68hc912dg128
Description
M68hc12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC912DG128.pdf
(452 pages)
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18.4.5 BDM Registers
Technical Data
366
Seven BDM registers are mapped into the standard 64-Kbyte address
space when BDM is active. Mapping is shown in
The only registers of interest to users are the STATUS register and the
CCRSAV register. The other BDM registers are only used by the BDM
firmware to execute commands. The registers are accessed by means
of the hardware READ_BD and WRITE_BD commands, but should not
be written during BDM operation (except the CCRSAV register which
could be written to modify the CCR value).
Freescale Semiconductor, Inc.
•
•
•
•
•
For More Information On This Product,
The INSTRUCTION register content is determined by the type of
background command being executed.
The STATUS register indicates BDM operating conditions.
The SHIFT register contains data being received or transmitted
via the serial interface.
The ADDRESS register is temporary storage for BDM commands.
The CCRSAV register preserves the content of the CPU12 CCR
while BDM is active.
Go to: www.freescale.com
$FF02 – $FF03
$FF04 – $FF05
Development Support
Address
$FF00
$FF01
$FF06
Table 18-4. BDM registers
BDM CCR Holding Register
BDM Instruction Register
BDM Address Register
BDM Status Register
BDM Shift Register
MC68HC912DG128 — Rev 3.0
Register
Table
18-4.
MOTOROLA
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