| Picture | ES Part No. | Part No | Stock | Price | Datasheet | Pb Free | RoHS | Description | Vendor | Case Style | Number of I/O | Core Processor | Program Memory Size (Bytes) | Non-Volatile Memory Size(Bytes-Data EE,Data Flash) | RAM Size (Bytes) | Package / Case | Mounting Type | ADC Bits/Channel | Communication | Core Sizes (Bits) | Max. Speed |
| | | | | | | | | | | | | | | | | | | | | |
 | 0065-0251-6 | AT89C51RC-24PU | 299 | 258.40 |  | PB-Free | | 8-Bit MCS-51 MCU Flash 32KBytes,RAM 512Bytes,24MHz | ATMEL | DIP | 32 | MCS51 | 32K | - | 512 | PDIP-40 | Through Hole | - | 1 UART | 8 | 24MHz |
| 0065-0377-9 | AT89S8253-24PU-T | 0 | 190.70 | | PB-Free | RoHS | 8-Bit MCS-51 MCU ISP Flash 12KBytes,RAM 256 Bytes EEPROM 2KBytes,Speed 24MHz SPI,UART Interface | ATMEL | DIP | 32 | MCS51 | 12K | 2K | 256 | PDIP-40 | Through Hole | - | 1 UART,1 SPI | 8 | 24MHz |
 | 0065-0360-2 | AT89C4051-24SU-T | 7 | 56.43 | | PB-Free | | 8-Bit MCS-51 MCU,Flash 4KBytes,RAM 128 Bytes,24MHz | ATMEL | SOIC | 15 | MCS51 | 4K | - | 128 | SOIC-20 | Surface Mount | - | 1 UART | 8 | 24MHz |
| 0065-0393-7 | AT89S52-24PU-T | 0 | 146.30 | | PB-Free | RoHS | 8-Bit MCS-51MCU ISP Flash 8KBytes,RAM 256 Bytes 24MHz | ATMEL | DIP | 32 | MCS51 | 8K | - | 256 | PDIP-40 | Through Hole | - | 1 UART | 8 | 24MHz |
| 0065-0247-0 | AT89S51-24PU | 1,171 | 135.60 | | PB-Free | | 8-Bit MCS-51 MCU ISP Flash 4KBytes,RAM 128Bytes 24MHz | ATMEL | DIP | 32 | MCS51 | 4K | - | 128 | PDIP-40 | Through Hole | - | 1 UART | 8 | 24MHz |
 | 0065-0203-2 | AT89C4051-24PU | 2,441 | 95.27 | | PB-Free | | 8-Bit MCS-51 MCU Flash 4KBytes,RAM 128 Bytes,24MHz | ATMEL | DIP | 15 | MCS51 | 4K | - | 128 | PDIP-20 | Through Hole | - | 1 UART | 8 | 24MHz |
 | 0065-0195-9 | AT89S8253-24AU | 3 | 133.00 | | PB-Free | | 8-Bit MCS-51 MCU Flash 12KBytes,RAM 256 Bytes EEPROM 2KBytes, 24MHz | ATMEL | QFP | 32 | MCS51 | 12K | 2K | 256 | TQFP-44 | Surface Mount | - | 1 UART,1 SPI | 8 | 24MHz |
| 0065-0197-5 | AT89C2051-24PU | 3,458 | 87.69 | | PB-Free | | 8-Bit MCS-51 MCU Flash 2KBytes,RAM 128 Bytes,24MHz | ATMEL | DIP | 15 | MCS51 | 2K | - | 128 | PDIP-20 | Through Hole | - | 1 UART | 8 | 24MHz |
| 0065-0151-1 | AT89C4051-24SU | 326 | 80.14 | | PB-Free | | 8-Bit MCS-51 MCU Flash 4KBytes,RAM 128 Bytes,24MHz | ATMEL | SOIC | 15 | MCS51 | 4K | - | 128 | SOIC-20 | Surface Mount | - | 1 UART | 8 | 24MHz |
| 0065-0168-6 | AT89S52-24PU | 4,929 | 158.70 | | PB-Free | RoHS | 8-Bit MCS-51MCU ISP Flash 8KBytes,RAM 256 Bytes 24MHz | ATMEL | DIP | 32 | MCS51 | 8K | - | 256 | PDIP-40 | Through Hole | - | 1 UART | 8 | 24MHz |
| 0065-0169-9 | AT89S8253-24PU | 458 | 214.90 | | PB-Free | RoHS | 8-Bit MCS-51 MCU Flash 12KBytes,RAM 256 Bytes EEPROM 2KBytes,24MHz | ATMEL | DIP | 32 | MCS51 | 12K | 2K | 256 | PDIP-40 | Through Hole | - | 1 UART,1 SPI | 8 | 24MHz |
| 1522-0092-6 | AT89S52-24PU | 1,776 | 155.90 | | PB-Free | RoHS | 8-Bit MCS-51 MCU, Flash 8KBytes, 256Bytes, Speed 24MHz | MICROCHIP | DIP | 32 | MCS51 | 8K | - | 256 | PDIP-40 | Through Hole | - | 1 UART | 8 | 24MHz |
 | 1111-0051-7 | ML62Q1335-NNNTDZWATL | 0 | 29.90 | | PB-Free | RoHS | 16-Bit nX-U16/100 MCU, Flash 32KBytes, RAM 2KBytes Data Flash 2KBytes, Speed 24MHz | LAPIS (ROHM GROUP) | SOIC | 16 | nX-U16/100 | 32K | 2K | 2K | SSOP-20 | Surface Mount | 10/8 | 2 UART,1 I2C | 16 | 24MHz |
 | 1111-0052-9 | ML62Q1557-NNNTBZWAX | 1,584 | 97.05 | | PB-Free | RoHS | 16-Bit nX-U16/100 MCU, Flash 256KBytes, RAM 16KBytes, Data Flash 4KBytes, Speed 24MHz | LAPIS (ROHM GROUP) | QFP | 58 | nX-U16/100 | 256K | 4K | 16K | TQFP-64 | Surface Mount | 10/12 | 2 UART,2 I2C | 16 | 24MHz |
| 1111-0053-1 | ML62Q1335-NNNTDZWATL | 0 | 24.80 | | PB-Free | RoHS | 16-Bit nX-U16/100 MCU, Flash 32KBytes, RAM 2KBytes Data Flash 2KBytes, Speed 24MHz | LAPIS (ROHM GROUP) | SOIC | 16 | nX-U16/100 | 32K | 2K | 2K | SSOP-20 | Surface Mount | 10/8 | 2 UART,1 I2C | 16 | 24MHz |
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