Datasheet

133
4235K–8051–05/08
AT89C51RD2/ED2
28. Document Revision History
28.1 Changes from 4235A -04/03 to 4135B - 06/03
1. V
IH
min changed from 0.2 V
CC
+ 1.1 to 0.2 V
CC
+ 0.9.
2. Added POR/PFD and reset specific sections.
3. Added DIL40 package.
4. Added Flash write programming time specification.
28.2 Changes from 4235B -06/03 to 4235C - 08/03
1. Changed maximum frequency to 60 MHz in X1 mode and 30 MHz in X2 mode for Vcc =
4.5V to 5.5V and internal code execution.
2. Added PDIL40 Packaging for AT89C51ED2.
28.3 Changes from 4235C - 08/03 to 4235D - 12/03
1. Improved explanations throughout the document.
28.4 Changes from 4235D - 12/03 to 4235E - 04/04
1. Improved explanations throughout the document.
28.5 Changes from 4235E - 04/04 to 4235F - 09/04
1. Improved explanations in Flash and EEPROM sections.
28.6 Changes from 4235F - 09/04 to 4235G 08/05
1. Added ‘Industrial & Green” product versions.
28.7 Changes from 4235G 08/05 to 4235H - 10/06
1. Correction to PDIL figure on page 9.
28.8 Changes from 4235H - 10/06 to 4235I - 04/07
1. Removal of PDIL40 package offering.
28.9 Changes from 4235I - 04/07 to 4235J - 01/08
1. Minor corrections throughout the document.
2. Updated Package drawings.
28.10 Changes from 4235J - 01/08 to 4235K - 05/08
1. Removed non-green packages from product ordering information.