Atmel AT89C51ED2 User Manual

Appendix D: References/Acronyms
4-21 AT89STK-11 Hardware User Guide
7676B–8051–08/07
Document Revision
History
Changes from 7676A to
7676B
1. Section 1.2, page 1-2 : AT89C51RE3/ID3/IE2 not supported.
2. Section 2.3.1.2, page 2-5 : SP1 must be kept closed.
3. Section 3.1.1, page 3-11 : SW1 switch and EA jumper do not exist.
4. Appendix A, page 4-13 : the given board layout was wrong. Replaced by the
right one.
5. Appendix C, page 4-19 : there was an error on page 4 of the schematic.
Pin5 of U9B is now connected to Vcc instead of GND.

Atmel AT89C51ED2 Specifications

General

Brand	Atmel
Model	AT89C51ED2
Category	Controller
Language	English