mc908jl16 Freescale Semiconductor, Inc, mc908jl16 Datasheet - Page 195

• Manufacturer Part Number: mc908jl16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

PRGRNGE
FLASH_START
INITIALISATION:
MAIN:
16.3.9.2 ERARNGE
ERARNGE is used to erase a range of locations in FLASH.
There are two sizes of erase ranges: a page or the entire array. The ERARNGE will erase the page (64
consecutive bytes) in FLASH specified by the address ADDRH:ADDRL. This address can be any address
within the page. Calling ERARNGE with ADDRH:ADDRL equal to $FFFF will erase the entire FLASH
array (mass erase). Therefore, care must be taken when calling this routine to prevent an accidental mass
erase. To avoid undesirable routine return addresses after a mass erase, the ERARNGE routine should
not be called from code executed from FLASH memory. Load the code into an area of RAM before calling
the ERARNGE routine.
The ERARNGE routine uses neither a data array nor DATASIZE.
The coding example below is to perform a page erase, from $EF00–$EF3F. The Initialization subroutine
is the same as the coding example for PRGRNGE (see
ERARNGE
MAIN:
Freescale Semiconductor
MOV
MOV
LDHX
STHX
RTS
BSR
:
:
LDHX
JSR
BSR
:
:
LDHX
EQU
EQU
ORG
#20,BUS_SPD
#32,DATASIZE
#FLASH_START
START_ADDR
INITIALISATION
#FILE_PTR
PRGRNGE
EQU
INITIALISATION
#FILE_PTR
Routine Description
$FC06
$EF00
FLASH
$FCBE
Data Block Format
Calling Address
Routine Name
Table 16-12. ERARNGE Routine
Stack Used
MC68HC908JL16 Data Sheet, Rev. 1.1
ERARNGE
Erase a page or the entire array
$FCBE
7 bytes
Bus speed (BUS_SPD)
Data size (DATASIZE)
Starting address (ADDRH)
Starting address (ADDRL)
16.3.9.1
PRGRNGE).
Monitor Module (MON)
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