mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 67

• Manufacturer Part Number: mc68hc908jb16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

4.9 ROM-Resident Routines
MC68HC908JB16
Freescale Semiconductor
—
Rev. 1.1
ROM-resident routines can be called by a program running in user mode
or in monitor mode (see
programming, erasing, and verifying. The range of the FLASH memory
must be unprotected (see
erase or programming routine.
Routine Name
BPR0 is used only for BPR[7:0] = $FF, for no block protection.
The resultant 16-bit address is used for specifying the start address
of the FLASH memory for block protection. The FLASH is protected
from this start address to the end of FLASH memory, at $FFFF. With
this mechanism, the protect start address can be X000, X200, X400,
X600, X800, XA00, XC00, or XE00 within the FLASH memory.
Examples of protect start address:
PROGRAM
VERIFY
ERASE
and so on...
Note:
The end address of the protected range is always $FFFF.
$BC (1011 1100)
$BE (1011 1110)
$C0 (1100 0000)
$C2 (1100 0010)
$00 to $BA
BPR[7:0]
$FE
$FF
FLASH Memory
Table 4-1. ROM-Resident Routines
Call Address
$FC03
$FC06
$FC09
Section 9. Monitor ROM
4.8 FLASH
The entire FLASH memory is not protected.
The entire FLASH memory is protected.
Start of Address of Protect Range
FLASH verify routine
FLASH mass or block erase routine
FLASH program routine
$BC00 (1011 1100 0000 0000)
$BE00 (1011 1110 0000 0000)
$C000 (1100 0000 0000 0000)
$C200 (1100 0010 0000 0000)
$FFD0–$FFFF (User vectors)
Protection) before calling the
Description
(MON)) for FLASH
FLASH Memory
Technical Data
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