HC705E5GRSSLASHD datasheet(113/148 Pages) NXP

tên linh kiện	HC705E5GRS/D

Giải thích chi tiết về linh kiện	General Release Specification

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User EPROM

Mask Option Register

MC68HC705E5 — Rev. 1.0

General Release Specification

User EPROM

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

1 Second CPI Rate

0.5 Second CPI Rate

0.25 Second CPI Rate

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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