MC68HC908LD64 Datasheet, PDF (65/362 Pages) Freescale Semiconductor, Inc – Microcontrollers

FLASH Memory
Functional Description
Table 4-1. FLASH Memory Array Summary
Bytes
Address range
Minimum erase size
Usage
Programming Size
Related Control registers
13,312 Array
1,024
12,288
$0C00–$0FFF
$1000–$3FFF
128 bytes
512 bytes
User data or
program
OSD fonts
Double bytes in a 64-byte
programming routine
FLCR1 at $FE0A
FLBPR1 at $FE0B
OSDEHBUF at $0066
47,616 Array
47,616
32
$4000–$F9FF
$FFE0–$FFFF
512 bytes
32 bytes by mass
erase only
User program
User vectors
Single bytes in a 64-byte
programming routine
FLCR at $FE07
FLBPR at $FE08
Each FLASH array is programmed and erased through control bits in
their respective memory mapped FLASH control registers, FLCR and
FLCR1.
The 13K-bytes array is programmed in double bytes. Programming an
odd address ($xxxx+1) location automatically programs the content in
the OSD FLASH even high byte write buffer (OSDEHBUF) to the even
address ($xxxx) location.
NOTE:
Programming tools are available from Freescale. Contact your local
Freescale representative for more information.
A security feature prevents viewing of the FLASH contents.¹
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or
copying the FLASH difficult for unauthorized users.
MC68HC908LD64 — Rev. 3.0
Freescale Semiconductor
FLASH Memory
Data Sheet
65