mc68hc908rf2 Freescale Semiconductor, Inc, mc68hc908rf2 Datasheet - Page 36

• Manufacturer Part Number: mc68hc908rf2
• Description: M68hc08 Microcontrollers Microcontroller / Transmitter
• Manufacturer: Freescale Semiconductor, Inc

Memory
2.5.8 Embedded Function Descriptions
2.5.8.1 RDVRRNG Routine
Data Sheet
36
Entry conditions:
Exit conditions:
Output to PA0
Ready/verify
RAM option:
Purpose:
NOTE:
option:
Name:
The functions shown in
global variables in RAM.
passing parameters.
This subsection describes the embedded functions.
RDVRRNG
Read and/or verify a range of FLASH memory
H:X
LADDR
DATA
ACC
C bit
ACC
DATA
This subroutine both compares data passed in the DATA array to the FLASH data
and reads the data from FLASH into the DATA array. It also calculates the
checksum of the data.
This subroutine dumps the data from the range to PA0 in the same format as
monitor data. It also calculates the checksum of the data.
This serial dump does not circumvent security because the security vectors must
still be passed to make FLASH readable in monitor mode.
Freescale Semiconductor, Inc.
1. RAMSTART is defined as the starting address of the RAM in the memory map.
For More Information On This Product,
Table 2-5. Embedded FLASH Routine Global Variables
This is address $0080.
Variable Location
Contains the first address of the range
Contains the last address of the range
Contains the data to compare the read data against for read/verify to
RAM only (length is user determined)
Non-zero for read/verify to RAM, 0 for output to PA0
Set if good compare for read/verify to RAM only
Contains checksum
Contains read FLASH data for read/verify to RAM only
CTRLBYT
CPUSPD
DERASE
BUMPS
LADDR
Go to: www.freescale.com
DATA
Table 2-4
Table 2-5
Memory
accept data through the CPU registers and
shows the RAM locations that are used for
Variable Address
RAMSTART + 10
RAMSTART + 12
RAMSTART + 13
RAMSTART + 15
RAMSTART + 8
RAMSTART + 9
MC68HC908RF2 — Rev. 4.0
(1)
MOTOROLA