mc68hc908jb8 Freescale Semiconductor, Inc, mc68hc908jb8 Datasheet - Page 54

• Manufacturer Part Number: mc68hc908jb8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

FLASH Memory
4.3 Functional Description
Technical Data
54
Addr.
$FE08
$FE09
FLASH Control Register
Register Name
FLASH Block Protect
NOTE:
(FLBPR)
Register
(FLCR)
Figure 4-1. FLASH Memory Register Summary
The FLASH memory consists of an array of 8,192 bytes for user memory
plus a small block of 16 bytes for user interrupt vectors.
reads as logic 1 and a programmed bit reads as a logic 0.
memory is block erasable. The minimum erase block size is 512 bytes.
Program and erase operation operations are facilitated through control
bits in FLASH control register (FLCR).The address ranges for the
FLASH memory are shown as follows:
Programming tools are available from Freescale. Contact your local
Freescale representative for more information.
A security feature prevents viewing of the FLASH contents.
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or
copying the FLASH difficult for unauthorized users.
Reset:
Reset:
Read:
Read:
Write:
Write:
•
•
$DC00–$FBFF (user memory; 8,192 bytes)
$FFF0–$FFFF (user interrupt vectors; 16 bytes)
Bit 7
BPR7
0
0
0
BPR6
FLASH Memory
6
0
0
0
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
BPR5
5
0
0
0
BPR4
4
0
0
0
HVEN
BPR3
3
0
0
MASS
BPR2
Freescale Semiconductor
2
0
0
An erased bit
ERASE
BPR1
The FLASH
1
0
0
1
Bit 0
BPR0
PGM
0
0