MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 97

• Manufacturer Part Number: MC68HC908JK8CP
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908JK8CP

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI
• Program Memory Type: Flash
• Program Memory Size: 8KB
• Total Internal Ram Size: 256Byte
• # I/os (max): 15
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 13-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 20
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

FILE_PTR:
BUS_SPD
DATASIZE
START_ADDR
DATAARRAY
PRGRNGE
FLASH_START
INITIALISATION:
MAIN:
7.5.2 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 do not use a data array. The DATASIZE byte is a dummy byte that is also not
used.
Freescale Semiconductor
:
MOV
MOV
LDHX
STHX
RTS
BSR
:
:
LDHX
JSR
Routine Name
Routine Description
Calling Address
Stack Used
Data Block Format
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
ORG
DS.B
DS.B
DS.W
DS.B
EQU
EQU
ORG
#20,
#32,
#FLASH_START
START_ADDR
INITIALISATION
#FILE_PTR
PRGRNGE
RAM
1; Indicates 4x bus frequency
1; Data size to be programmed
1; FLASH start address
32; Reserved data array
$FC06
$EF00
FLASH
BUS_SPD
DATASIZE
Table 7-12. ERARNGE Routine
ERARNGE
Erase a page or the entire array
$FCBE
9 bytes
Bus speed (BUS_SPD)
Data size (DATASIZE)
Starting address (ADDRH)
Starting address (ADDRL)
ROM-Resident Routines
97