MC908JL8CDWE Datasheet, PDF (201/212 Pages) Freescale Semiconductor, Inc – Microcontrollers

Appendix A
MC68HC08JL8
A.1 Introduction
This section introduces the MC68HC08JL8, the ROM part equivalent to the MC68HC908JL8/JK8. The
entire data book applies to this ROM device, with exceptions outlined in this appendix.
Table A-1. Summary of MC68HC08JL8 and MC68HC908JL8 Differences
Memory ($DC00–$FBFF)
User vectors ($FFDC–$FFFF)
Registers at $FE08 and $FFCF
Mask option register ($FFD0)
Monitor ROM
($FC00–$FDFF and $FE10–$FFCE)
Available Packages
MC68HC08JL8
8,192 bytes ROM
36 bytes ROM
Not used;
locations are reserved.
Defined by mask; read only.
$FC00–$FDFF: Not used.
$FE10–$FFCE: Used for testing
purposes only.
20-pin PDIP (MC68HC08JK8)
20-pin SOIC (MC68HC08JK8)
28-pin PDIP
28-pin SOIC
32-pin SDIP
32-pin LQFP
MC68HC908JL8
8,192 bytes FLASH
36 bytes FLASH
FLASH related registers.
$FE08 — FLCR
$FFCF — FLBPR
Read/write FLASH register.
Used for testing and FLASH
programming/erasing.
20-pin PDIP (MC68HC908JK8)
20-pin SOIC (MC68HC908JK8)
28-pin PDIP
28-pin SOIC
32-pin SDIP
32-pin LQFP
A.2 MCU Block Diagram
Figure A-1 shows the block diagram of the MC68HC08JL8.
A.3 Memory Map
The MC68HC08JL8 has 8,192 bytes of user ROM from $DC00 to $FBFF, and 36 bytes of user ROM
vectors from $FFDC to $FFFF. On the MC68HC908JL8, these memory locations are FLASH memory.
Figure A-2 shows the memory map of the MC68HC08JL8.
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
Freescale Semiconductor
201