Deep-Dive with AI
Search across all available documentation for this part.
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | PIC18F4321-I/PT |
|---|---|
| Connectivity | I2C, SPI, UART/USART |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Data Converters [custom] | 10 b |
| Data Converters [custom] | 13 |
| EEPROM Size | 256 x 8 |
| Mounting Type | Surface Mount |
| Number of I/O | 36 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Oscillator Type | Internal |
| Package / Case | 44-TQFP |
| Peripherals | Brown-out Detect/Reset, POR, PWM, HLVD, WDT |
| Program Memory Size | 8 KB |
| Program Memory Type | FLASH |
| RAM Size | 512 |
| Speed | 40 MHz |
| Supplier Device Package | 44-TQFP (10x10) |
| Voltage - Supply (Vcc/Vdd) [Max] | 5.5 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.2 V |
| Part | Data Converters [custom] | Data Converters [custom] | Program Memory Type | RAM Size | Speed | Supplier Device Package | Oscillator Type | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | EEPROM Size | Core Size | Mounting Type | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] | Number of I/O | Core Processor | Peripherals | Connectivity | Program Memory Size | Package / Case | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 44-TQFP (10x10) | Internal | 5.5 V | 2 V | 256 x 8 | 8-Bit | Surface Mount | 44-TQFP | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | ||
 Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 44-TQFP (10x10) | Internal | 5.5 V | 2 V | 256 x 8 | 8-Bit | Surface Mount | 44-TQFP | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | ||
 Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 44-QFN (8x8) | Internal | 5.5 V | 4.2 V | 256 x 8 | 8-Bit | Surface Mount | 44-VQFN Exposed Pad | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | ||
 Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 40-PDIP | Internal | 5.5 V | 2 V | 256 x 8 | 8-Bit | Through Hole | 40-DIP | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | 15.24 mm | 0.6 in |
Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 44-TQFP (10x10) | Internal | 5.5 V | 4.2 V | 256 x 8 | 8-Bit | Surface Mount | 44-TQFP | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | ||
Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 44-TQFP (10x10) | Internal | 5.5 V | 4.2 V | 256 x 8 | 8-Bit | Surface Mount | 44-TQFP | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | ||
 Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 44-QFN (8x8) | Internal | 5.5 V | 2 V | 256 x 8 | 8-Bit | Surface Mount | 44-VQFN Exposed Pad | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | ||
Microchip Technology | 10 b | 13 | FLASH | 512 | 25 MHz | 40-PDIP | Internal | 5.5 V | 4.2 V | 256 x 8 | 8-Bit | Through Hole | 40-DIP | 125 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | 15.24 mm | 0.6 in |
Microchip Technology | 10 b | 13 | FLASH | 512 | 40 MHz | 44-QFN (8x8) | Internal | 5.5 V | 4.2 V | 256 x 8 | 8-Bit | Surface Mount | 44-VQFN Exposed Pad | 85 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB | ||
 Microchip Technology | 10 b | 13 | FLASH | 512 | 25 MHz | 44-TQFP (10x10) | Internal | 5.5 V | 4.2 V | 256 x 8 | 8-Bit | Surface Mount | 44-TQFP | 125 °C | -40 °C | 36 | PIC | Brown-out Detect/Reset HLVD POR PWM WDT | I2C SPI UART/USART | 8 KB |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tray | 1 | $ 4.38 | |
| 25 | $ 4.29 | |||
| Microchip Direct | TRAY | 1 | $ 4.38 | |
| 25 | $ 4.01 | |||
| 100 | $ 3.62 | |||
| 1000 | $ 3.34 | |||
| 5000 | $ 3.18 | |||
Description
General part information
PIC18LF4321 Series
This powerful 10 MIPS (100 nanosecond instruction execution), yet easy-to-program (only 77 single word instructions) CMOS Flash-based 8-bit microcontroller packs Microchip's powerful PIC® architecture into a 44-pin package and is upwards compatible with the PIC16C5X, PIC12CXXX, PIC16CXX and PIC17CXX devices and provides a seamless migration path of software code to higher levels of hardware integration.
The PIC18F4321 features a C compiler-friendly development environment, 256 bytes of EEPROM, self-programming, an ICD, 2 capture/compare/PWM functions, 13 channels of 10-bit Analog-to-Digital (A/D) converter, 2 comparators, the synchronous serial port can be configured as either 3-wire Serial Peripheral Interface (SPI™) or the 2-wire Inter-Integrated Circuit (I²C™) bus and Enhanced Universal Asynchronous Receiver Transmitter (EUSART), 8 MHz internal RC oscillator and advanced low power oscillator controls.
All of these features make it ideal for battery powered and power consumption critical applications including instrumentation and monitoring, data acquisition, power conditioning, environmental monitoring, telecom and consumer audio/video applications.
Documents
Technical documentation and resources