W78L051C24DL 데이터 시트보기 (PDF) - Winbond

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W78L051C24DL

8-BIT MICROCONTROLLER

Winbond 

W78LE51C/W78L051C

Lock bit

This bit is used to protect the customer's program code in the W78L051C. It may be set after the

programmer finishes the programming and verifies sequence. Once this bit is set to logic 0, both the

Flash EPROM data and Special Setting Registers can not be accessed again.

MOVC Inhibit

This bit is used to restrict the accessible region of the MOVC instruction. It can prevent the MOVC

instruction in external program memory from reading the internal program code. When this bit is set to

logic 0, a MOVC instruction in external program memory space will be able to access code only in the

external memory, not in the internal memory. A MOVC instruction in internal program memory space

will always be able to access the ROM data in both internal and external memory. If this bit is logic 1,

there are no restrictions on the MOVC instruction.

Encryption

This bit is used to enable/disable the encryption logic for code protection. Once encryption feature is

enabled, the data presented on port 0 will be encoded via encryption logic. Only whole chip erase will

reset this bit.

8. ABSOLUTE MAXIMUM RATINGS

PARAMETER

DC Power Supply

Input Voltage

Operating Temperature

Storage Temperature

SYMBOL

VDD−VSS

VIN

TA

TST

MIN.

-0.3

VSS -0.3

0

-55

MAX.

+7.0

VDD +0.3

70

+150

UNIT

V

V

°C

°C

Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability

of the device.

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Publication Release Date: December 4, 2006

Revision A3

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