| PartNumber | PIC18F2321-E/SP | PIC18F2321-E/SO | PIC18F2321-E/ML |
| Description | 8-bit Microcontrollers - MCU 28-pin 8KB Flash 512bytesRAM 25I/O | 8-bit Microcontrollers - MCU 28-pin 8KB Flash 512bytes-RAM 25I/O | 8-bit Microcontrollers - MCU 8KB FLSH 512BRAM 8B nanoWatt |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | Through Hole | SMD/SMT | SMD/SMT |
| Package / Case | SPDIP-28 | SOIC-28 | QFN-44 |
| Series | PIC18(L)Fxx21 | PIC18(L)Fxx21 | PIC18(L)Fxx21 |
| Core | PIC | PIC | PIC |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 40 MHz | 40 MHz | 40 MHz |
| Program Memory Size | 8 kB | 8 kB | 8 kB |
| Data RAM Size | 512 B | 512 B | 512 B |
| ADC Resolution | 10 bit | 10 bit | 10 bit |
| Number of I/Os | 25 I/O | 25 I/O | 25 I/O |
| Operating Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 125 C | + 125 C | + 125 C |
| Packaging | Tube | Tube | Tube |
| Height | 3.3 mm | 2.31 mm | 0.88 mm |
| Length | 34.67 mm | 17.87 mm | 6 mm |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Width | 7.24 mm | 7.49 mm | 6 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Interface Type | EUSART, I2C, MSSP, SPI | EUSART, I2C, MSSP, SPI | EUSART, I2C, MSSP, SPI |
| Number of ADC Channels | 10 | 10 | 10 |
| Number of Timers/Counters | 4 Timer | 4 Timer | 4 Timer |
| Processor Series | PIC18 | PIC18 | PIC18 |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 15 | 27 | 61 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 4.2 V | 4.2 V | 4.2 V |
| Tradename | PIC | PIC | PIC |
| Unit Weight | 0.776027 oz | 0.027937 oz | 0.013051 oz |
| Moisture Sensitive | - | Yes | - |