AT80251G2D-3CSUM(2006) 데이터 시트보기 (PDF) - Atmel Corporation

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AT80251G2D-3CSUM
(Rev.:2006)

8/16-bit Microcontroller with Serial Communication Interfaces

Atmel Corporation 

• Then device is driving the data on Port 2.

• It is possible to alternate programming and verification operation (see Paragraph

Programming Algorithm). Please make sure the voltage on the EA# pin has actually

been lowered to VDD before performing the verifying operation.

• PSEN# and the other control signals have to be released to complete a sequence of

verifying operations or a sequence of programming and verifying operations.

Table 37. Verifying Modes

ROM Area(1)

RST EA#/VPP PSEN# ALE/PROG# P0 P2 P1(MSB) P3(LSB)

On-chip code

memory

1

1

0

16-bit Address

1

28h Data 0000h-7FFFh (32

kilobytes)

Configuration Bytes

1

1

0

1

29h

Data

CONFIG0: FFF8h

CONFIG1: FFF9h

Lock Bits

1

1

0

1

2Bh Data 0000h

Signature Bytes

1

1

0

1

29h

Data

0030h, 0031h, 0060h,

0061h

Notes: 1. To preserve the secrecy of on-chip code memory when encrypted, the Encryption

Array can not be verified.

Figure 7. Setup for Verifying

VDD

VDD

Mode

RST

EA#/VPP

ALE/PROG#

PSEN#

VDD

TSC8x251G2D

P0[7:0]

P2[7:0]

Data

A[7:0]

A[14:8]

P3[7:0]

P1[7:0]

XTAL1

VSS/VSS1/VSS2

4 to 12 MHz

44 AT/TSC8x251G2D

4135F–8051–11/06

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