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參數(shù)資料
| 型號(hào)： | MC68HC05P8EVS |
| 廠商： | Motorola, Inc. |
| 英文描述： | HCMOS MICROCONTROLLER UNIT |
| 中文描述： | HCMOS微控制器 |
| 文件頁(yè)數(shù)： | 50/82頁(yè) |
| 文件大?。?/td> | 327K |
| 代理商： | MC68HC05P8EVS |
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MOTOROLA
8-4
BOOTLOADER MODE
MC68HC705J2
Rev. 2
1
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8.3 Mask Option Register (MOR)
The mask option register is an EPROM byte that contains three bits to control the
following options:
MC68HC05J1 emulation mode
External interrupt trigger sensitivity
COP timer (enable/disable)
The mask option register is programmable only when using the bootloader function
to download to the EPROM.
Figure 8-2. Mask Option Register (MOR)
J1 — MC68HC05J1 Emulation Mode Select
This bit can be read at any time, but can be programmed only by the bootloader.
1 = Emulation mode selected; MCU functions as MC68HC05J1
0 = (Erased state) MC68HC705J2 native mode selected
IRQ — Interrupt Request
This bit can be read at any time, but can be programmed only by the bootloader.
1 = IRQ trigger is both edge-sensitive and level-sensitive
0 = (Erased state) IRQ trigger is edge-sensitive only
COP — COP Timer Enable
This bit can be read at any time, but can be programmed only by the bootloader.
1 = COP timer enabled
0 = (Erased state) COP timer disabled
NOTE
To avoid unintentionally enabling any of the options in the MOR, the
user should ensure that location $0F00 of the 8K external EPROM
(2764) is programmed with either the appropriate value for the
options to be enabled or $00. This is necessary because the erased
state of an 8K external EPROM is $FF, whereas the erased state of
the MOR is $00.
MOR
— Mask Option Register
$0F00
MC68HC05J1 Emulation Mode:
$0700
Bit 7
—
6
—
5
—
4
—
3
—
2
J1
1
Bit 0
COP
IRQ
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC705J2 | HCMOS MICROCONTROLLER UNIT |
| MC68HC705J2CP | HCMOS MICROCONTROLLER UNIT |
| MC68HC705J2DW | HCMOS MICROCONTROLLER UNIT |
| MC68HC705J2P | HCMOS MICROCONTROLLER UNIT |
| MC68HC705J2S | HCMOS MICROCONTROLLER UNIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05P8P | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P9 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P9A | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9ACDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9ACP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
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