| 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 |
| | | | | | | | | | | | | | | | | | | | | |
 | 0127-0058-8 | ADUC834BS | 50 | 214.80 |  | | | 8-Bit MCS-51 MCU, Flash 62KBytes, RAM 2.25KBytes EEPROM 4KBytes, Speed 12.58MHz, Dual 16-Bit/24-Bit Sigma-Delta ADCs | ANALOG DEVICES | QFP | 34 | MCS51 | 62K | 4K | 2.25K | MQFP-52 | Surface Mount | 16/3,24/4 | 1 UART,1 SPI,1 I2C | 8 | 12.58MHz |
| 0127-0059-1 | ADUC847BS32-5 | 1 | 102.30 | | | | 8-Bit MCS51 MCU, Flash 32KBytes, RAM 2.25KBytes, EEPROM 4KBytes, Speed 12.58MHz, Multichannel 24-Bit Sigma-Delta ADCs | ANALOG DEVICES | QFP | 34 | MCS51 | 32K | 4K | 2.25K | MQFP-52 | Surface Mount | 24/10 | 1 UART,1 SPI,1 I2C | 8 | 12.58MHz |
 | 0127-0085-1 | ADUCM360BCPZ128 | 3 | 678.70 | | PB-Free | RoHS | 32-Bit ARM Cortex-M3 MCU, Flash 128KBytes, SRAM 8KBytes, Speed 16MHz, Dual 24-Bit Sigma-Delta ADCs | ANALOG DEVICES | QFN | 19 | ARM | 128K | - | 8K | QFN-48 | Surface Mount | 24/12 | 1 UART,2 SPI,1 I2C | 32 | 16MHz |
 | 1654-0003-2 | APM32E103RCT6 | 625 | 109.50 | | PB-Free | RoHS | 32-Bit ARM Cortex-M3 MCU Flash 256 KBytes, SRAM 64 KBytes, Built-in Independent FPU, Working Frequency 120MHz. | GEEHY | QFP | 51 | ARM | 256K | - | 64K | LQFP-64 | Surface Mount | 12/16 | 3 USART,2 UART,3 SPI,2 I2S,3 I2C,1 USBD,2 CAN | 32 | 120MHz |
 | 1654-0001-8 | APM32F103C8T6 | 2,424 | 92.81 | | PB-Free | RoHS | 32-Bit ARM Cortex-M3 MCU Flash 64 KBytes, SRAM 20 KBytes, Working Frequency 96MHz. | GEEHY | QFP | 37 | ARM | 64K | - | 20K | LQFP-48 | Surface Mount | 12/10 | 3 USART,2 SPI,2 I2C,1 USBD,1 CAN | 32 | 96MHz |
| 1654-0002-1 | APM32F103RCT6 | 0 | 109.50 | | PB-Free | RoHS | 32-Bit ARM Cortex-M3 MCU Flash 256 KBytes, SRAM 64 KBytes, Working Frequency 96MHz. | GEEHY | QFP | 51 | ARM | 256K | - | 64K | LQFP-64 | Surface Mount | 12/16 | 3 USART,2 UART,3 SPI,2 I2S,2 I2C,1 USBD,2 CAN | 32 | 96MHz |
 | 0065-0368-8 | AT89C2051-12SU | 530 | 67.03 | | PB-Free | RoHS | 8-Bit MCS-51 MCU Flash 2KBytes,RAM 128 Bytes,12MHz | ATMEL | SOIC | 15 | MCS51 | 2K | - | 128 | SOIC-20 | Surface Mount | - | 1 UART | 8 | 12MHz |
 | 0065-0197-5 | AT89C2051-24PU | 3,571 | 85.32 | | 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 |
| 0065-0203-2 | AT89C4051-24PU | 1,391 | 114.40 | | 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 |
 | 0065-0151-1 | AT89C4051-24SU | 326 | 75.81 | | 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 |
| 0065-0360-2 | 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 |
 | 0065-0212-3 | AT89C51AC2-RLTUM | 15 | 366.50 | | PB-Free | RoHS | 8-Bit MCS-51 MCU Flash 32KBytes,RAM 1256 Bytes EEPROM 2KBytes,10-Bit A/D with 8 Multiplex Input | ATMEL | QFP | 34 | MCS51 | 32K | 2K | 1.2K | QFP-44 | Surface Mount | 10/8 | 1 UART | 8 | 40MHz |
| 0035-2288-9 | AT89C51AC3-RLTUM | 0 | 527.10 | | PB-Free | RoHS | 8-Bit MCS-51 MCU Flash 64 KBytes,RAM 256 Bytes EEPROM 2KBytes,60MHz,10-Bit A/D Converter | MICROCHIP | QFP | 36 | MCS51 | 64K | 2K | 256 | QFP-44 | Surface Mount | 10/8 | 1 UART,1 SPI | 8 | 60MHz |
| 0065-0385-8 | AT89C51ED2-RLTUM-T | 0 | 198.50 | | PB-Free | RoHS | 8-Bit MCS-51 MCU Flash 64KBytes,RAM 2048 Bytes EEPROM 2048 Bytes,60MHz | ATMEL | QFP | 32 | MCS51 | 64K | 2K | 2K | QFP-44 | Surface Mount | - | 1 UART,1 SPI | 8 | 60MHz |
 | 0065-0238-9 | AT89C51ED2-SLSUM | 119 | 180.60 | | PB-Free | | 8-Bit MCS-51 MCU Flash 64KBytes,RAM 2048 Bytes EEPROM 2048 Bytes,60MHz | ATMEL | LCC | 32 | MCS51 | 64K | 2K | 2K | PLCC-44 | Surface Mount | - | 1 USART,1 SPI | 8 | 60MHz |
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