参数资料
型号: MC68HC705E5DW
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: SOIC-28
文件页数: 17/148页
文件大小: 620K
代理商: MC68HC705E5DW
User EPROM
Mask Option Register
MC68HC705E5 Rev. 1.0
General Release Specification
MOTOROLA
User EPROM
113
NON-DISCLOSURE
AGREEMENT
REQUIRED
13.5 Mask Option Register
The MOR contains programmable EPROM bits to control mask options.
The MOR register is latched upon reset going away.
STOPEN — STOP Enable
When set, STOP is enabled.
CPI1, CPI0 — CPI Rate bits
READ:
Any time
WRITE: In special modes, writing these bits activates the function
without having to program it and can be written many times.
In user mode, writing has no effect. These bits must be
programmed. Refer to Table 13-2.
IRQ — IRQ sensitivity
1 = This bit selects the edge and level sensitive IRQ.
0 = This bit selects the edge-only sensitive IRQ (EPROM erased
state).
Address:
$1F00
Bit 7
654321
Bit 0
Read:
STOPEN
CPI1
CPI0
IRQ
COP
Write::
Reset:
00001000
Figure 13-5. Mask Option Register (MOR)
Table 13-2. CPI Rate
CPI1
CPI0
Interrupt Rate
0
X
1 Second CPI Rate
1
0
0.5 Second CPI Rate
1
0.25 Second CPI Rate
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