AT89C5115-RATUM datasheet(28/113 Pages) ATMEL

部件名	AT89C5115-RATUM

功能描述	Low Pin Count 8-bit Microcontroller with A/D Converter and 16 KBytes Flash Memory

PDF	113 Pages

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制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

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AT89C5115

4128G–8051–02/08

Table 18. AUXR1 Register

AUXR1 (S:A2h)

Auxiliary Control Register 1

Reset Value = XXXX 00X0b

Note:

1. ENBOOT is initialized with the invert BLJB at reset. See In-System Programming

section.

ENBOOT

GF3

DPS

Bit

Number

Bit

Mnemonic

Description

7 - 6

Reserved

The value read from these bits is indeterminate. Do not set these bits.

ENBOOT(1)

Enable Boot Flash

Set this bit to map the boot Flash between F800h -FFFFh

Clear this bit to disable boot Flash.

Reserved

The value read from this bit is indeterminate. Do not set this bit.

GF3

General Purpose Flag 3

Always Zero

This bit is stuck to logic 0 to allow INC AUXR1 instruction without affecting GF3

flag.

Reserved for Data Pointer Extension

DPS

Data Pointer Select bit

Set to select second dual data pointer: DPTR1.

Clear to select first dual data pointer: DPTR0.

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