參數(shù)資料
型號: MC68HC11A8BMP2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Single-Chip Microcontroller
中文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48
封裝: DIP-48
文件頁數(shù): 27/158頁
文件大?。?/td> 776K
代理商: MC68HC11A8BMP2
MC68HC11A8
TECHNICAL DATA
ON-CHIP MEMORY
MOTOROLA
3-1
3
3 ON-CHIP MEMORY
This section describes the on-chip ROM, RAM, and EEPROM memories. The memory
maps for each mode of operation are shown and the RAM and l/O mapping register
(INIT) is described. The INIT register allows the on-chip RAM and the 64 control reg-
isters to be moved to suit the needs of a particular application.
3.1 Memory Maps
Composite memory maps for each mode of operation are shown in
Figure 3-1
. Mem-
ory locations are shown in the shaded areas and the contents of these shaded areas
are shown to the right. These modes include single-chip, expanded multiplexed, spe-
cial bootstrap, and special test.
Single-chip operating modes do not generate external addresses. Refer to
Table 3-1
for a full list of the registers.
Figure 3-1 Memory Maps
SINGLE
CHIP
BOOTSTRAP
SPECIAL
TEST
EXPANDED
NORMAL
MODES
INTERRUPT
VECTORS
64-BYTE REGISTER BLOCK
256 BYTES RAM
EXT
$0000
$1000
$B600
$E000
$FFFF
SPECIAL MODES
INTERRUPT
VECTORS
512 BYTES EEPROM
8 KBYTES ROM
BOOT
ROM
EXT
A8 MEM MAP
FFC0
FFFF
BFC0
BFFF
E000
FFFF
BF40
BFFF
B600
B7FF
1000
103F
0000
00FF
EXT
EXT
EXT
EXT
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