T89C5115-RATIM datasheet(41/105 Pages) ATMEL

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T89C5115-RATIM датащи(PDF) 41 Page - ATMEL Corporation

номер детали	T89C5115-RATIM

подробное описание детали	Low Pin Count 8-bit MCU with A/D Converter and 16-Kbytes of Flash Memory

PDF	105 Pages

Scroll/Zoom	100%

производитель	ATMEL [ATMEL Corporation]

домашняя страница	http://www.atmel.com

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T89C5115

4128A–8051–04/02

Hardware Security Byte

Table 25. Hardware Security byte

Default value after erasing chip: FFh

Notes:

1. Only the 4 MSB bits can be accessed by software.

2. The 4 LSB bits can only be accessed by parallel mode.

X2B

BLJB

LB2

LB1

LB0

Bit

Number

Bit

Mnemonic

Description

7X2B

X2 Bit

Set this bit to start in standard mode

Clear this bit to start in X2 mode.

6BLJB

Boot Loader Jump Bit

- 1: To start the user’s application on next RESET (@0000h) located in FM0,

- 0: To start the boot loader(@F800h) located in FM1.

5-3

Reserved

The value read from these bits are indeterminate.

2-0

LB2:0

Lock Bits

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