M AT89C51CC03UA-RLRUM AT89C51CC03UA-RLTUM AT89C51CC03UA-S3RUM AT89C51CC03UA-S3SUM AT89C51CC03UA-SLRUM AT89C51CC03UA-SLSUM no replacement AT89C51ED2-RDRUM AT89C51ED2-RDTUM AT89C51ED2-RDTUM AT89C51ED2-RLRUM AT89C51ED2-RLTUM AT89C51ED2-RLTUM AT89C51ED2-SLRUM AT89C51ED2-SLSUM AT89C51ED2-SLSUM AT89C51ED2-SMRUM AT89C51ED2-SMSUM AT89C51IC2-RLRUL AT89C51IC2-RLRUM AT89C51IC2-RLTUL AT89C51IC2-RLTUM AT89C51IC2-SLRUL AT89C51IC2-SLRUM AT89C51IC2-SLSUM AT89C51IC2-SLSUL AT89C51IC2-SLSUM AT89C51ID2-RDTUM AT89C51ID2-RLRUM AT89C51ID2-RLTUM AT89C51ID2-RLTUM AT89C51ID2-SLRUM AT89C51ID2-SLSUM AT89C51ID2-SLSUM AT89C51RB2-3CSUM AT89C51RB2-RLRUL AT89C51RB2-RLRUM AT89C51RB2-RLTUM AT89C51RB2-RLTUL AT89C51RB2-RLTUM AT89C51RB2-SLRUL AT89C51RB2-SLRUM AT89C51RB2-SLSUM AT89C51RB2-SLSUL AT89C51RB2-SLSUM AT89C51RC-24AU AT89C51RC-24AU AT89CC51RC-24AU AT89CC51RC-24AU AT89C51RC-24JU AT89C51RC-24JU AT89CC51RC-24JU AT89CC51RC-24JU AT89C51RC-24PU NOW NOW NOW NOW NOW NOW NOW NOW not available NOW NOW NOW NOW NOW NOW NOW NO

LCC68 Stick AT89C51RD2-UM PLCC44 Stick AT89C51ED2-UM VQFP44 Tray AT89C51ED2-UM AT89C51ED2- SMSUM PLCC68 Stick AT89C51ED2-UM AT89C51ED2-RDTUM VQFP64 Tray AT89C51ED2-UM AT89C51RD2-SLSUM AT89C51RD2-RLTUM No AT89C51RD2-RDTUM(1) AT89C51RD2-SMSUM(1) 2.7V - 5.5V AT89C51ED2-SLSUM AT89C51ED2-RLTUM Industrial & Green Yes Note: 126 1. For PLCC68 and VQFP64 packages, please contact Atmel sales office for availability. AT89C51RD2/ED2 4235K-8051-05/08 AT89C51RD2/ED2 27. Packaging Information 27.1 PLCC44 127 4235K-8051-05/08 STANDARD NOTES FOR PLCC 1/ CONTROLLING DIMENSIONS : INCHES 2/ DIMENSIONING AND TOLERANCING PER ANSI Y 14.5M - 1982. 3/ "D" AND "E1" DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS. MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.20 mm (.008 INCH) PER SIDE. 128 AT89C51RD2/ED2 4235K-8051-05/08 AT89C51RD2/ED2 27.2 VQFP44 129 4235K-8051-05/08 STANDARD NOTES FOR PQFP/ VQFP / TQFP / DQFP 1/ CONTROLLING DIMENSIONS : INCHES 2/ ALL DIMENSIONING AND TOLERANCING CONFORM TO ANSI Y 14.5M 1982. 3/ "D1 AND

P51RD2/ED2/ID2 Device Migration Package Packing Previous Ordering Code New Ordering Code Stick AT89C51RD2-SLSUM AT89LP51RD2-20JU Reel AT89C51RD2-SLRUM AT89LP51RD2-20JUR Tray AT89C51RD2-RLTUM AT89LP51RD2-20AAU Reel AT89C51RD2-RLRUM AT89LP51RD2-20AAUR Stick AT89C51ED2-SLSUM AT89LP51ED2-20JU Reel AT89C51ED2-SLRUM AT89LP51ED2-20JUR Tray AT89C51ED2-RLTUM AT89LP51ED2-20AAU Reel AT89C51ED2-RLRUM AT89LP51ED2-20AAUR Stick AT89C51ID2-SLSUM AT89LP51ID2-20JU Reel AT89C51ID2-SLRUM AT89LP51ID2-20JUR Tray AT89C51ID2-RLTUM AT89LP51ID2-20AAU Reel AT89C51ID2-RLRUM AT89LP51ID2-20AAUR PLCC44 AT89C51RD2 to AT89LP51RD2 VQFP44 PLCC44 AT89C51ED2 to AT89LP51ED2 VQFP44 PLCC44 AT89C51ID2 to AT89LP51ID2 VQFP44 Table 25-2. Packages Not Found in AT89C51RD2/ED2/ID2 Device Package Packing Ordering Code PDIP40 Stick AT89LP51RD2-20PU Tray AT89LP51RD2-20AU Reel AT89LP51RD2-20AUR Tray AT89LP51RD2-20MU Reel AT89LP51RD2-20MUR Stick AT89LP51ED2-20PU Tray AT89LP51ED2-20AU Reel AT89LP51ED2-20AUR Tray AT89LP51ED2-20MU Reel AT89LP51ED2-20

UM AT89C51ED2-RDTUM VQFP64 Tray AT89C51ED2-UM AT89C51RD2-SLSIM AT89C51RD2-RLTIM No AT89C51RD2-RDTIM(1) AT89C51RD2-SMSIM(1) 2.7V - 5.5V Industrial AT89C51ED2-SLSIM AT89C51ED2-RLTIM Yes AT89C51RD2-RLTUM No AT89C51RD2-RDTUM(1) AT89C51RD2-SMSUM(1) 2.7V - 5.5V AT89C51ED2-SLSUM AT89C51ED2-RLTUM Industrial & Green Yes Note: 126 1. For PLCC68 and VQFP64 packages, please contact Atmel sales office for availability. AT89C51RD2/ED2 4235J-8051-01/08 AT89C51RD2/ED2 27. Packaging Information 27.1 PLCC44 127 4235J-8051-01/08 STANDARD NOTES FOR PLCC 1/ CONTROLLING DIMENSIONS : INCHES 2/ DIMENSIONING AND TOLERANCING PER ANSI Y 14.5M - 1982. 3/ "D" AND "E1" DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS. MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.20 mm (.008 INCH) PER SIDE. 128 AT89C51RD2/ED2 4235J-8051-01/08 AT89C51RD2/ED2 27.2 VQFP44 129 4235J-8051-01/08 STANDARD NOTES FOR PQFP/ VQFP / TQFP / DQFP 1/ CONTROLLING DIMENSIONS : INCHES 2/ ALL DIMENSIONING AND TOLERANCING CONFORM TO ANSI Y 14.5M 1982. 3/ "D1 AND

1ED2-UM AT89C51ED2-RDTUM VQFP64 Tray AT89C51ED2-UM AT89C51RD2-SLSIM AT89C51RD2-RLTIM No AT89C51RD2-SMSIM 2.7V - 5.5V AT89C51ED2-SLSIM Industrial AT89C51ED2-RLTIM AT89C51ED2-3CSIM Yes AT89C51RD2-RLTUM No (1) AT89C51RD2-RDTUM AT89C51RD2-SMSUM(1) 2.7V - 5.5V AT89C51ED2-SLSUM AT89C51ED2-RLTUM AT89C51ED2-3CSUM Note: Yes Industrial & Green 1. For PLCC68 and VQFP64 packages, please contact Atmel sales office for availability. 127 4235H-8051-10/06 Packaging Information PLCC44 128 AT89C51RD2/ED2 4235H-8051-10/06 AT89C51RD2/ED2 VQFP44 129 4235H-8051-10/06 PLCC68 130 AT89C51RD2/ED2 4235H-8051-10/06 AT89C51RD2/ED2 VQFP64 131 4235H-8051-10/06 PDIL40 132 AT89C51RD2/ED2 4235H-8051-10/06 AT89C51RD2/ED2 Datasheet Change Log for AT89C51RD2/ED2 Changes from 4235A 04/03 to 4135B - 06/03 1. VIH min changed from 0.2 V CC + 1.1 to 0.2 VCC + 0.9. 2. Added POR/PFD and reset specific sections. 3. Added DIL40 package. 4. Added Flash write programming time specification. Changes from 4235B 06/03 to 4235C - 08/03 1. Changed

rademarks of others. 4257E-8051-08/07 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Atmel: AT89C51ED2-RDRUM AT89C51ED2-RLRUM AT89C51ED2-SLRUM AT89C51ED2-SMRUM AT89C51RD2RLRUM AT89C51RD2-RLTUM AT89C51ED2-SLSUM AT89C51ED2-RLTUM AT89C51ED2-SMSUM AT89C51ED2RDTUM

89C5131A-S3SUM PLCC32KB1280B Yes Yes 34 AT89C51AC2-RLTUM LQFP 32KB1280BUART API 34 AT89C51CC01UA-RLTUMLQFP32KB1280B Yes Yes 34 AT89C51RC2-SLSUM PLCC 32KB1280BUART API 32 AT89C51ED2-RLTUM LQFP 64KB2048BUART API 32 AT89C51RD2-SLSUM PLCC 64KB2048BUART API 32 AT89C51ED2-SLSUM PLCC 64KB2048BUART API 32 AT89C51ED2-RDTUM VQFP64KB2048BUART API 32 AT89C51RE2-SLSUM PLCC128KB8448B UART Yes 34 Atmel Part No. mouser.com/atmel All Prices In GBP Vcc Max. Freq. 2.4V-5.0V20MHz 2.7V-6.0V24MHz 2.7V-6.0V12MHz 4.0V-6.0V24MHz 2.7V-5.5V24MHz 4.0V-6.0V24MHz 2.4V-5.5V20MHz 2.7V-5.5V24MHz 4.0V-5.5V33MHz 4.0V-5.5V33MHz 2.7V-4.0V16MHz 4.0V-5.5V33MHz 4.0V-5.5V33MHz 4.0V-5.5V33MHz 2.7V-5.5V24MHz 2.7V-5.5V24MHz 2.7V-5.5V24MHz 2.7V-5.5V60MHz 2.7V-5.5V60MHz 4.0V-6.0V33MHz 4.0V-5.5V24MHz 4.0V-5.5V24MHz 4.0V-5.5V24MHz 2.7V-5.5V60MHz 2.7V-5.5V60MHz 2.7V-5.5V60MHz 3.0V-3.6V48MHz 3.0V-3.6V48MHz 3.0V-3.6V48MHz 3.0V-5.5V40MHz 3.0V-5.5V40MHz 2.7V-5.5V60MHz 2.7V-5.5V60MHz 2.7V-5.5V60MHz 2.7V-5.5V60MHz 2.7V-5.5V60MHz 2.7V-5.5V 60MHz UART

P51RD2/ED2/ID2 Device Migration Package Packing Previous Ordering Code New Ordering Code Stick AT89C51RD2-SLSUM AT89LP51RD2-20JU Reel AT89C51RD2-SLRUM AT89LP51RD2-20JUR Tray AT89C51RD2-RLTUM AT89LP51RD2-20AAU Reel AT89C51RD2-RLRUM AT89LP51RD2-20AAUR Stick AT89C51ED2-SLSUM AT89LP51ED2-20JU Reel AT89C51ED2-SLRUM AT89LP51ED2-20JUR Tray AT89C51ED2-RLTUM AT89LP51ED2-20AAU Reel AT89C51ED2-RLRUM AT89LP51ED2-20AAUR Stick AT89C51ID2-SLSUM AT89LP51ID2-20JU Reel AT89C51ID2-SLRUM AT89LP51ID2-20JUR Tray AT89C51ID2-RLTUM AT89LP51ID2-20AAU Reel AT89C51ID2-RLRUM AT89LP51ID2-20AAUR PLCC44 AT89C51RD2 to AT89LP51RD2 VQFP44 PLCC44 AT89C51ED2 to AT89LP51ED2 VQFP44 PLCC44 AT89C51ID2 to AT89LP51ID2 VQFP44 Table 26-2. Packages Not Found in AT89C51RD2/ED2/ID2 Device Package Packing Ordering Code PDIP40 Stick AT89LP51RD2-20PU Tray AT89LP51RD2-20AU Reel AT89LP51RD2-20AUR Tray AT89LP51RD2-20MU Reel AT89LP51RD2-20MUR Stick AT89LP51ED2-20PU Tray AT89LP51ED2-20AU Reel AT89LP51ED2-20AUR Tray AT89LP51ED2-20MU Reel AT89LP51ED2-20

LCC68 Stick AT89C51ED2-UM AT89C51ED2-RDTUM VQFP64 Tray AT89C51ED2-UM AT89C51RD2-SLSIM AT89C51RD2-RLTIM No 2.7V - 5.5V AT89C51ED2-SLSIM Industrial AT89C51ED2-RLTIM AT89C51ED2-3CSIM Yes AT89C51RD2-RLTUM No AT89C51RD2-RDTUM(1) AT89C51RD2-SMSUM(1) 2.7V - 5.5V AT89C51ED2-SLSUM AT89C51ED2-RLTUM AT89C51ED2-3CSUM Note: Yes Industrial & Green 1. For PLCC68 and VQFP64 packages, please contact Atmel sales office for availability. 127 4235G-8051-08/05 Packaging Information PLCC44 128 AT89C51RD2/ED2 4235G-8051-08/05 AT89C51RD2/ED2 VQFP44 129 4235G-8051-08/05 PLCC68 130 AT89C51RD2/ED2 4235G-8051-08/05 AT89C51RD2/ED2 VQFP64 131 4235G-8051-08/05 PDIL40 132 AT89C51RD2/ED2 4235G-8051-08/05 AT89C51RD2/ED2 Datasheet Change Log for AT89C51RD2/ED2 Changes from 4235A 04/03 to 4135B - 06/03 1. VIH min changed from 0.2 VCC + 1.1 to 0.2 VCC + 0.9. 2. Added POR/PFD and reset specific sections. 3. Added DIL40 package. 4. Added Flash write programming time specification. Changes from 4235B 06/03 to 4235C - 08/03 1. Changed m

P51RD2/ED2/ID2 Device Migration Package Packing Previous Ordering Code New Ordering Code Stick AT89C51RD2-SLSUM AT89LP51RD2-20JU Reel AT89C51RD2-SLRUM AT89LP51RD2-20JUR Tray AT89C51RD2-RLTUM AT89LP51RD2-20AAU Reel AT89C51RD2-RLRUM AT89LP51RD2-20AAUR Stick AT89C51ED2-SLSUM AT89LP51ED2-20JU Reel AT89C51ED2-SLRUM AT89LP51ED2-20JUR Tray AT89C51ED2-RLTUM AT89LP51ED2-20AAU Reel AT89C51ED2-RLRUM AT89LP51ED2-20AAUR Stick AT89C51ID2-SLSUM AT89LP51ID2-20JU Reel AT89C51ID2-SLRUM AT89LP51ID2-20JUR Tray AT89C51ID2-RLTUM AT89LP51ID2-20AAU Reel AT89C51ID2-RLRUM AT89LP51ID2-20AAUR PLCC44 AT89C51RD2 to AT89LP51RD2 VQFP44 PLCC44 AT89C51ED2 to AT89LP51ED2 VQFP44 PLCC44 AT89C51ID2 to AT89LP51ID2 VQFP44 Table 4-2. Packages Not Found in AT89C51RD2/ED2/ID2 Device Package Packing Ordering Code PDIP40 Stick AT89LP51RD2-20PU Tray AT89LP51RD2-20AU Reel AT89LP51RD2-20AUR Tray AT89LP51RD2-20MU Reel AT89LP51RD2-20MUR Stick AT89LP51ED2-20PU Tray AT89LP51ED2-20AU Reel AT89LP51ED2-20AUR Tray AT89LP51ED2-20MU Reel AT89LP51ED2-20M

P51RD2/ED2/ID2 Device Migration Package Packing Previous Ordering Code New Ordering Code Stick AT89C51RD2-SLSUM AT89LP51RD2-20JU Reel AT89C51RD2-SLRUM AT89LP51RD2-20JUR Tray AT89C51RD2-RLTUM AT89LP51RD2-20AAU Reel AT89C51RD2-RLRUM AT89LP51RD2-20AAUR Stick AT89C51ED2-SLSUM AT89LP51ED2-20JU Reel AT89C51ED2-SLRUM AT89LP51ED2-20JUR Tray AT89C51ED2-RLTUM AT89LP51ED2-20AAU Reel AT89C51ED2-RLRUM AT89LP51ED2-20AAUR Stick AT89C51ID2-SLSUM AT89LP51ID2-20JU Reel AT89C51ID2-SLRUM AT89LP51ID2-20JUR Tray AT89C51ID2-RLTUM AT89LP51ID2-20AAU Reel AT89C51ID2-RLRUM AT89LP51ID2-20AAUR PLCC44 AT89C51RD2 to AT89LP51RD2 VQFP44 PLCC44 AT89C51ED2 to AT89LP51ED2 VQFP44 PLCC44 AT89C51ID2 to AT89LP51ID2 VQFP44 Table 25-2. Packages Not Found in AT89C51RD2/ED2/ID2 Device Package Packing Ordering Code PDIP40 Stick AT89LP51RD2-20PU Tray AT89LP51RD2-20AU Reel AT89LP51RD2-20AUR Tray AT89LP51RD2-20MU Reel AT89LP51RD2-20MUR Stick AT89LP51ED2-20PU Tray AT89LP51ED2-20AU Reel AT89LP51ED2-20AUR Tray AT89LP51ED2-20MU Reel AT89LP51ED2-20

P51RD2/ED2/ID2 Device Migration Package Packing Previous Ordering Code New Ordering Code Stick AT89C51RD2-SLSUM AT89LP51RD2-20JU Reel AT89C51RD2-SLRUM AT89LP51RD2-20JUR Tray AT89C51RD2-RLTUM AT89LP51RD2-20AAU Reel AT89C51RD2-RLRUM AT89LP51RD2-20AAUR Stick AT89C51ED2-SLSUM AT89LP51ED2-20JU Reel AT89C51ED2-SLRUM AT89LP51ED2-20JUR Tray AT89C51ED2-RLTUM AT89LP51ED2-20AAU Reel AT89C51ED2-RLRUM AT89LP51ED2-20AAUR Stick AT89C51ID2-SLSUM AT89LP51ID2-20JU Reel AT89C51ID2-SLRUM AT89LP51ID2-20JUR Tray AT89C51ID2-RLTUM AT89LP51ID2-20AAU Reel AT89C51ID2-RLRUM AT89LP51ID2-20AAUR PLCC44 AT89C51RD2 to AT89LP51RD2 VQFP44 PLCC44 AT89C51ED2 to AT89LP51ED2 VQFP44 PLCC44 AT89C51ID2 to AT89LP51ID2 VQFP44 Table 4-2. Packages Not Found in AT89C51RD2/ED2/ID2 Device Package Packing Ordering Code PDIP40 Stick AT89LP51RD2-20PU Tray AT89LP51RD2-20AU Reel AT89LP51RD2-20AUR Tray AT89LP51RD2-20MU Reel AT89LP51RD2-20MUR Stick AT89LP51ED2-20PU Tray AT89LP51ED2-20AU Reel AT89LP51ED2-20AUR Tray AT89LP51ED2-20MU Reel AT89LP51ED2-20M

LCC68 Stick AT89C51RD2-UM PLCC44 Stick AT89C51ED2-UM VQFP44 Tray AT89C51ED2-UM AT89C51ED2- SMSUM PLCC68 Stick AT89C51ED2-UM AT89C51ED2-RDTUM VQFP64 Tray AT89C51ED2-UM AT89C51RD2-SLSUM AT89C51RD2-RLTUM No AT89C51RD2-RDTUM(1) AT89C51RD2-SMSUM(1) 2.7V - 5.5V AT89C51ED2-SLSUM AT89C51ED2-RLTUM Industrial & Green Yes Note: 126 1. For PLCC68 and VQFP64 packages, please contact Atmel sales office for availability. AT89C51RD2/ED2 4235K-8051-05/08 AT89C51RD2/ED2 27. Packaging Information 27.1 PLCC44 127 4235K-8051-05/08 STANDARD NOTES FOR PLCC 1/ CONTROLLING DIMENSIONS : INCHES 2/ DIMENSIONING AND TOLERANCING PER ANSI Y 14.5M - 1982. 3/ "D" AND "E1" DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTUSIONS. MOLD FLASH OR PROTUSIONS SHALL NOT EXCEED 0.20 mm (.008 INCH) PER SIDE. 128 AT89C51RD2/ED2 4235K-8051-05/08 AT89C51RD2/ED2 27.2 VQFP44 129 4235K-8051-05/08 STANDARD NOTES FOR PQFP/ VQFP / TQFP / DQFP 1/ CONTROLLING DIMENSIONS : INCHES 2/ ALL DIMENSIONING AND TOLERANCING CONFORM TO ANSI Y 14.5M 1982. 3/ "D1 AND

AT89C51RC-24JU 556-A89C51C01UASLSUM AT89C51CC01UA-SLSUM 556-A89C51AC2RLTUM AT89C51AC2-RLTUM 556-A89C51RC2RLTUM AT89C51RC2-RLTUM 556-A89C51RC2-3CSUM AT89C51RC2-3CSUM 556-A89C51ED2RLTUM AT89C51ED2-RLTUM 556-A89C51RD2SLSUM AT89C51RD2-SLSUM 556-A89C51ED2SLSUM AT89C51ED2-SLSUM 556-A89C51ED2SMSUM AT89C51ED2-SMSUM Flash - Reprogrammable 556-A89C2051-24PU AT89C2051-24PU 556-A89C205112PU AT89C2051-12PU 556-A89C2051-24SU AT89C2051-24SU 556-A89C405112PU AT89C4051-12PU 556-A89C4051-24SU AT89C4051-24SU 556-A89C4051-24PU AT89C4051-24PU 556-AT89C55WD-24JU AT89C55WD-24JU 556-A89C55WD-24AU AT89C55WD-24AU 556-AT89C55WD-24PU AT89C55WD-24PU 556-A89C51RC-24PU AT89C51RC-24PU CAN Networking 556-A89C51C01UARLTUM AT89C51CC01UA-RLTUM Full Speed USB (1.1 & 2.0) 556-A89C5131ARDTUM AT89C5131A-RDTUM 556-A89C5131AS3SUM AT89C5131A-S3SUM MCU / MPU / DSP ATMEL Microcontrollers

AT89C51ED2-RDTUM VQFP64 Tray AT89C51ED2-UM AT89C51RD2-SLSIM AT89C51RD2-RLTIM No AT89C51RD2-RDTIM(1) AT89C51RD2-SMSIM (1) 2.7V - 5.5V Industrial AT89C51ED2-SLSIM AT89C51ED2-RLTIM Yes AT89C51RD2-RLTUM No AT89C51RD2-RDTUM(1) AT89C51RD2-SMSUM (1) 2.7V - 5.5V AT89C51ED2-SLSUM AT89C51ED2-RLTUM Industrial & Green Yes Note: 1. For PLCC68 and VQFP64 packages, please contact Atmel sales office for availability. 127 4235I-8051-04/07 Packaging Information PLCC44 128 AT89C51RD2/ED2 4235I-8051-04/07 AT89C51RD2/ED2 VQFP44 129 4235I-8051-04/07 PLCC68 130 AT89C51RD2/ED2 4235I-8051-04/07 AT89C51RD2/ED2 VQFP64 131 4235I-8051-04/07 Document Revision History Changes from 4235A 04/03 to 4135B - 06/03 1. VIH min changed from 0.2 VCC + 1.1 to 0.2 VCC + 0.9. 2. Added POR/PFD and reset specific sections. 3. Added DIL40 package. 4. Added Flash write programming time specification. 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 in