AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 133

• Manufacturer Part Number: AT89C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RD2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 2
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

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