mc9s12ne64 Freescale Semiconductor, Inc, mc9s12ne64 Datasheet - Page 93
mc9s12ne64
Manufacturer Part Number
mc9s12ne64
Description
Hcs12 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12NE64.pdf
(554 pages)
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Clock Register
Loaded
Check
Signature
Compared to
Known Value
Access
Error Check
Bit Polling for
Command
Completion Check
Figure 2-23. Example Data Compress Command Flow
Read: Register FCLKDIV
1.
2.
3.
Bit FDIVLD set?
Write: Flash address to start
compression and number of
word addresses to compress (max 16,384)
Write: Register FCMD
Data Compress Command 0x06
Write: Register FSTAT
Clear bit CBEIF 0x80
Read: Register FDATA
Data Compress Signature
yes
Read: Register FSTAT
MC9S12NE64 Data Sheet, Rev. 1.1
no
yes
yes
ACCERR
Signature
Set?
Write: Register FCLKDIV
Valid?
Bit
CCIF
Set?
EXIT
Bit
no
yes
no
no
NOTE: command write sequence
aborted by writing 0x00 to
FSTAT register.
NOTE: command write sequence
aborted by writing 0x00 to
FSTAT register.
Clear bit ACCERR 0x10
Write: Register FSTAT
Flash Region Compressed
Read: Register FSTAT
Erase and Reprogram
Functional Description
93
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