參數(shù)資料
型號(hào): MC68HCP11A1FN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-Bit Microcontrollers
中文描述: 8-BIT, EEPROM, MICROCONTROLLER, PQCC52
封裝: PLASTIC, LCC-52
文件頁(yè)數(shù): 11/45頁(yè)
文件大小: 286K
代理商: MC68HCP11A1FN
MC68HC11A8
MC68HC11A8TS/D
MOTOROLA
11
RBOOT, SMOD, and MDA reset depend on conditions at reset and can only be written in special modes
(SMOD = 1).
RBOOT — Read Bootstrap ROM
0 = Bootloader ROM disabled and not in map
1 = Bootloader ROM enabled and in map at $BF40–$BFFF
SMOD —Special Mode Select
MDA — Mode Select A
IRV — Internal Read Visibility
0 = No internal read visibility on external bus
1 = Data from internal reads is driven out through the external data bus
PSEL3–PSEL0 — Priority Select Bits 3 through 0
Refer to
3 Resets and Interrupts
.
RAM[3:0] —256-Byte Internal RAM Map Position
RAM[3:0] determine the upper four bits of the RAM address, positioning RAM at the selected 4K bound-
ary.
REG[3:0] —64-Byte Register Block Map Position
REG[3:0] determine the upper four bits of the register address, positioning registers at the selected 4K
boundary. Register can be written only once in the first 64 cycles out of reset in normal modes, or any
time in special modes.
HPRIO
— Highest Priority I-Bit Interrupt and Miscellaneous
$103C
Bit 7
RBOOT
6
5
4
3
2
1
Bit 0
PSEL0
1
SMOD
MDA
IRV
PSEL3
0
PSEL2
1
PSEL1
0
RESET:
Inputs
Mode
Latched at Reset
SMOD
0
0
1
1
MODB
1
1
0
0
MODA
0
1
0
1
RBOOT
0
0
1
0
MDA
0
1
0
1
Single Chip
Expanded Multiplexed
Special Bootstrap
Special Test
INIT
— RAM and I/O Mapping
$103D
Bit 7
RAM3
0
6
5
4
3
2
1
Bit 0
REG0
1
RAM2
0
RAM1
0
RAM0
0
REG3
0
REG2
0
REG1
0
RESET:
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