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参数资料
| 型号： | MC68HC11C0MFN2 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 2 MHz, MICROCONTROLLER, PQCC68 |
| 封装： | PLASTIC, LCC-68 |
| 文件页数： | 8/76页 |
| 文件大小： | 394K |
| 代理商： | MC68HC11C0MFN2 |
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MOTOROLA
MC68HC11C0
16
MC68HC11C0TS/D
3.2 RAM
In expanded mode, RAM is disabled after reset. In single-chip, bootstrap, and special test modes RAM
is enabled and present at locations $0400–$04FF. The RAM can be mapped to any 1-Kbyte boundary
by writing an appropriate value to the INIT2 register. The INIT2 register must be written during the first
64 cycles after reset in expanded and single-chip modes. If RAM and the register block are placed at
the same 1-Kbyte boundary, the first 128 bytes of RAM are inaccessible. This is due to an on-chip hard-
ware priority scheme which eliminates conflicts which could arise from multiple resources sharing ad-
dress locations. Refer to the memory map diagram.
Can be written anytime in first 64 cycles in expanded or single-chip modes or at any time in other
modes.
RAM[15:10] — Internal RAM Map Position
These bits determine the upper six bits of the RAM address. At reset RAM is mapped to $0400–$04FF.
Refer to the memory map diagram.
In single-chip and expanded modes (SMOD = 0), CONFIG can only be written once. In special test and
bootstrap modes (SMOD = 1), CONFIG can be written any time. Changes do not take effect until the
first cycle of the instruction following the write to CONFIG.
$0072
Reserved
$0073
Reserved
$0074
Reserved
$0075
0
DOD5
DOD4
DOD3
DOD2
DOD1
DOD0
DODM
$0076
Reserved
$0077
Reserved
$0078
Reserved
$0079
Reserved
$007A
Reserved
$007B
Reserved
$007C
000000
PH1
PH0
PORTH
$007D
000000
DDH1
DDH0
DDRH
$007E
PG7
PG6
PG5
PG4
PG3
PG2
PG1
PG0
PORTG
$007F
DDG7
DDG6
DDG5
DDG3
DDG2
DDG1
DDG0
DDRG
INIT2 — RAM Mapping
$0037
Bit 7
654321
Bit 0
RAM15
RAM14
RAM13
RAM12
RAM11
RAM10
—
RESET:
00000100
CONFIG — System Configuration Register
$003F
Bit 7
654321
Bit 0
—
RWMC
—
NOCOP
RAMON
—
RESET:
00000100
Table 2 MC68HC11C0 Register and Control Bit Assignments (Continued)
The register block begins at $0000 out of reset and can be remapped to any 1K boundary.
Bit 7
654321
Bit 0
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相关代理商/技术参数 |
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| MC68HC11C0MFU2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller |
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