TS80C51RA2-VCKB datasheet(53/74 Pages) ATMEL

53 / 74 page

Rev. C - 06 March, 2001

TS80C51RA2/RD2

TS83C51RB2/RC2/RD2

TS87C51RB2/RC2/RD2

8.3. EPROM Programming

8.3.1. Set-up modes

In order to program and verify the EPROM or to read the signature bytes, the TS87C51RB2/RC2/RD2 is placed

in specific set-up modes (See Figure 18.).

Control and program signals must be held at the levels indicated in Table 30.

8.3.2. Definition of terms

Address Lines:

P1.0-P1.7, P2.0-P2.5, P3.4, P3.5 respectively for A0-A15 (P2.5 (A13) for RB, P3.4 (A14) for

RC, P3.5 (A15) for RD)

Data Lines:

P0.0-P0.7 for D0-D7

Control Signals:

RST, PSEN, P2.6, P2.7, P3.3, P3.6, P3.7.

Program Signals: ALE/PROG, EA/VPP.

Table 30. EPROM Set-Up Modes

Mode

RST

PSEN

ALE/

PROG

EA/VPP

P2.6

P2.7

P3.3

P3.6

P3.7

Program Code data

12.75V

Verify Code data

Program Encryption Array

Address 0-3Fh

12.75V

Read Signature Bytes

Program Lock bit 1

12.75V

Program Lock bit 2

12.75V

Program Lock bit 3

12.75V

TS80C51RA2-VCKB Datasheet(PDF) 53 Page - ATMEL Corporation

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