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參數資料
型號: MC68B912B32FU8
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 16-Bit Microcontroller
中文描述: 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數: 31/128頁
文件大小: 748K
代理商: MC68B912B32FU8
MC68HC912B32
MC68HC912B32TS/D
MOTOROLA
31
ROMON — Enable Flash EEPROM
In expanded modes ROMON is reset to zero. In single-chip modes it is reset to one. If the internal RAM,
registers, EEPROM, or BDM ROM (if active) are mapped to the same space as the Flash EEPROM,
they will have priority over the Flash EEPROM.
0 = Disables the Flash EEPROM in the memory map
1 = Enables the Flash EEPROM in the memory map
5.4 Memory Maps
The following diagrams illustrate the memory map for each mode of operation immediately after reset.
Figure 6 MC68HC912B32 Memory Map
BDM
(IF ACTIVE)
HC812B32 MEM MAP
$8000
$FFFF
$FFFF
FLASH EEPROM
$0000
$0800
$0D00
$0FFF
$FF00
$0000
$01FF
$0200
$0800
SINGLE CHIP
SPECIAL
SINGLE CHIP
NORMAL
EXPANDED
$8000
VECTORS
VECTORS
VECTORS
$FF00
$FFC0
$F000
768 BYTES EEPROM
MAP TO ANY 4K SPACE
1-KBYTE RAM
MAP TO ANY 2K SPACE
REGISTERS
512 BYTES RAM
MAP TO ANY 2K SPACE
$FFFF
$0BFF
MAP WITH MAPROM BIT
IN MISC REGISTER
TO $0000 – $7FFF
OR $8000 – $FFFF
$0D00
$0000
$7FFF
$03FF
REGISTER FOLLOWING
SPACE
512 BYTES RAM
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