PIC18F4320T-I/PT - 8KB Flash 8-bit MCU 40MHz TQFP-44 | Microchip
MPN: PIC18F4320T-I/PT ✓ פעילPIC18F4320T-I/PT סקירה
A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and peripherals such as timers, communication interfaces and ADCs. PIC18F-series parts sit in the 8-bit microcontrollers tier of the broader semiconductor hierarchy and are widely used for cost-sensitive embedded control. nanoWatt Technology is Microchip's family of dynamic power-management modes that reduce quiescent current during idle or sleep states to extend battery life.
Key features include 77 single-word instructions, an enhanced 16-bit instruction set, hardware multiplier, two 8-bit timers plus three 16-bit timers, a 10-bit ADC with up to 13 channels, and capture/compare/PWM (CCP) modules. The internal RC oscillator and wide operating voltage simplify designs by eliminating external clock components. PIC18F devices are supported by Microchip's MPLAB X IDE and XC8 compiler, providing a mature development ecosystem.
Typical applications include industrial control, consumer white goods, sensor signal conditioning, low-end human-machine interface (HMI), automotive body and aftermarket subsystems, and USB-to-UART bridges when paired with the PIC18F4550 family variant. With 36 I/O and 13 ADC channels the PIC18F4320 supports medium-density I/O designs that need modest processing.
When designing with this device, ensure VDD decoupling is placed close to the pins, leave MCLR accessible for in-system programming, and budget for a 5 V supply since the ADC reference and operating range require 4.2 V minimum. Compare against the 28-pin PIC18F2220 or 40-pin PIC18F4220 siblings when pin count or memory differ.
The PIC18F4320T-I/PT is widely stocked in distribution. The "T" suffix indicates tape-and-reel packaging and "I" denotes the industrial temperature grade. This page synthesizes distributor pricing, drop-in TQFP-44 alternatives, and practical design guidance not aggregated on the manufacturer datasheet.
חלופות תחליף ישיר עבור PIC18F4320T-I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18F4320T-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Package, Core Architecture, Program Memory (Flash), ADC, Timers.
PIC18F4320-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4320-E/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4221T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4220T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4520-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F4420-I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC18F4320T-I/PT דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC 8-bit RISC |
| Core Size | 8-bit |
| Program Memory Size | 8 KB (4K x 16) Flash |
| RAM Size | 512 bytes |
| EEPROM Size | 256 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 13 channels |
| Timers | 2 x 8-bit, 3 x 16-bit |
| CCP/PWM Modules | Yes (2) |
| Instruction Set | 77 single-word instructions, 16-bit wide |
| טווח טמפרטורת פעולה | -40C to +85C (Industrial grade) |
| מארז | 44-pin TQFP (10 x 10 mm) |
| Packaging | Tape and Reel (T suffix) |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 (per JEDEC J-STD-020) |
| סטטוס RoHS | Compliant |
| nanoWatt Technology | Yes |
| Internal Oscillator | Yes (8 MHz, software selectable) |
תצורת פינים של PIC18F4320T-I/PT
| פין 1 | RA2/AN2/VREF-/CVREF — PORTA bit 2 / Analog input 2 / DAC negative reference / comparator reference output |
| פין 2 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC positive reference |
| פין 3 | RA4/T0CKI/C1OUT — PORTA bit 4 / Timer0 clock input / Comparator 1 output |
| פין 4 | RA5/AN4/SS/LVDIN — PORTA bit 5 / Analog input 4 / SPI slave select / LVD input |
| פין 5 | VSS — Ground reference |
| פין 6 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock input / PORTA bit 7 |
| פין 7 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / PORTA bit 6 |
| פין 8 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| פין 9 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 input/output |
| פין 10 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| פין 11 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 12 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| פין 13 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| פין 14 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| פין 15 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| פין 16 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 17 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 18 | RC6/TX/CK — PORTC bit 6 / USART async transmit / USART sync clock |
| פין 19 | RC7/RX/DT — PORTC bit 7 / USART async receive / USART sync data |
| פין 20 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| פין 21 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| פין 22 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| פין 23 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| פין 24 | VSS — Ground reference |
| פין 25 | VDD — Positive supply voltage |
| פין 26 | RB0/INT0/FLT0 — PORTB bit 0 / External interrupt 0 / PWM fault input |
| פין 27 | RB1/INT1 — PORTB bit 1 / External interrupt 1 |
| פין 28 | RB2/INT2 — PORTB bit 2 / External interrupt 2 |
| פין 29 | RB3/INT3/CCP2 — PORTB bit 3 / External interrupt 3 / CCP2 alternate |
| פין 30 | RB4 — PORTB bit 4 (interrupt-on-change) |
| פין 31 | RB5 — PORTB bit 5 (interrupt-on-change) |
| פין 32 | RB6/PGC — PORTB bit 6 / ICSP clock (programming) |
| פין 33 | RB7/PGD — PORTB bit 7 / ICSP data (programming) |
| פין 34 | RE0/RD/AN5 — PORTE bit 0 / Parallel Slave Port read / Analog input 5 |
| פין 35 | RE1/WR/AN6 — PORTE bit 1 / Parallel Slave Port write / Analog input 6 |
| פין 36 | RE2/CS/AN7 — PORTE bit 2 / Parallel Slave Port chip select / Analog input 7 |
| פין 37 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| פין 38 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| פין 39 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| פין 40 | VDD — Positive supply voltage |
| פין 41 | VSS — Ground reference |
| פין 42 | RB7 — PORTB bit 7 alternate (ICSP data) |
| פין 43 | RB6 — PORTB bit 6 alternate (ICSP clock) |
| פין 44 | AVDD — Analog positive supply voltage (tie to VDD) |
יישומים טיפוסיים
PIC18F4320T-I/PT מתאים עבור 7 יישוםs: Industrial Control Systems, Consumer White Goods, Automotive Body and Aftermarket Electronics, Sensor Signal Conditioning Hubs, HMI Keypad and Display Controllers, Battery-Backed Data Loggers, Educational and Hobbyist Projects.
Industrial Control Systems
The PIC18F4320T-I/PT fits industrial control applications because its 36 I/O pins drive relays, solenoids and indicator LEDs directly, the 13-channel 10-bit ADC reads multiple sensor inputs, and the 8 KB Flash accommodates PID control loops with state-machine firmware. At 5 V and -40C to +85C the part handles factory-floor temperature swings. Compared to discrete logic controllers, the integrated CCP/PWM modules generate timing pulses for motor control, eliminating external timer ICs and reducing BOM cost.
מומלץ
Consumer White Goods
The PIC18F4320T-I/PT suits washing machines, microwave ovens and air-conditioner control boards because it integrates user-interface driving (keypad scanning, LED/LCD multiplexing) and sensor reading (temperature, water level, door switch) on a single chip. The nanoWatt sleep modes drop quiescent current to microamps in standby, saving energy when the appliance is idle. The 40 MHz clock handles 7-segment display refresh and button-debounce routines without CPU bottlenecking.
מומלץ
Automotive Body and Aftermarket Electronics
The PIC18F4320T-I/PT powers aftermarket automotive controllers such as alarm systems, central locking modules and gauge clusters because it supports -40C to +85C operation and 5 V supply rails common in 12 V vehicle systems. The enhanced USART interfaces with LIN bus transceivers for body networks, while the MSSP drives SPI peripherals such as EEPROM memory and SPI displays. For under-hood applications requiring 125C, upgrade to PIC18F4320-E/PT extended temperature variant.
מומלץ
Sensor Signal Conditioning Hubs
The PIC18F4320T-I/PT acts as a multi-sensor aggregator that reads 4-20 mA or 0-10 V analog inputs via its 13-channel ADC, applies linearization in firmware, and outputs processed values over RS-485 UART or SPI. Its 10 MIPS CPU runs digital filtering (moving-average, IIR) faster than PIC16F siblings, and the 8 KB Flash holds calibration tables and look-up routines for thermocouples, RTDs, and strain gauges. The internal 8 MHz oscillator eliminates external crystal cost in remote sensor nodes.
מומלץ
HMI Keypad and Display Controllers
The PIC18F4320T-I/PT serves as a low-cost HMI controller driving 4x4 matrix keypads, character LCDs (HD44780-compatible), and tri-color LED indicators because of its 36 I/O and PWM-capable CCP modules. The MSSP peripherals drive SPI displays and I2C EEPROMs concurrently, while the 10 MIPS throughput debounces key presses and refreshes LCD segments without perceived latency. For touch-screen HMIs requiring more RAM, upgrade to PIC18F47K40 family.
מומלץ
Battery-Backed Data Loggers
The PIC18F4320T-I/PT supports low-duty-cycle data logging applications when paired with an external RTC and serial EEPROM. The nanoWatt sleep current keeps quiescent draw low, while periodic wake-ups let the ADC sample temperature, voltage or pressure and store readings in external EEPROM over I2C. The 256-byte on-chip EEPROM provides backup storage for configuration data, while 8 KB Flash holds the logging firmware and compression routines.
מומלץ
Educational and Hobbyist Projects
The PIC18F4320T-I/PT is well suited for university embedded-systems courses and hobbyist projects because of its mature toolchain (MPLAB X IDE, XC8 compiler, PICkit programmers), extensive code examples, and breadboard-friendly TQFP-44 footprint with adapter PCB. The 8 KB Flash accommodates full C-based curricula including GPIO, timers, ADC, UART and interrupt programming. The device's PIC18 instruction set is widely documented in textbooks, easing learning.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18F4320T-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F4320-I/PT | PIC18F4320-E/PT | PIC18F4221T-I/PT | PIC18F4220T-I/PT | PIC18F4520-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| Flash Memory | 8 KB | 8 KB | 8 KB | 16 KB | 4 KB | 32 KB |
| RAM | 512 B | 512 B | 512 B | 768 B | 512 B | 1536 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max Clock Speed | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
| ADC Channels | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit | 13 x 10-bit |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Packaging | Tape & Reel | Tray | Tray | Tape & Reel | Tape & Reel | Tray |
מבדילים עיקריים
- Same 44-pin TQFP-44 package across the entire PIC18F4320 family (לעומתPIC18F4520-I/PT)
- Industrial vs Extended temperature grading is the only difference within the family (לעומתPIC18F4320-E/PT)
- Tape-and-reel packaging optimized for SMT production lines (לעומתPIC18F4320-I/PT)
הערות תכנון
Decouple both VDD pins (25 and 40) with 100 nF ceramic capacitors placed within 5 mm of the pin, plus a bulk 10 uF tantalum or aluminum capacitor. Tie AVDD to VDD through a ferrite bead or 10 ohm resistor to filter ADC analog supply noise. For battery operation, the nanoWatt Sleep mode draws approximately 100 nA typical at 3 V - 30x lower than Run mode, so duty-cycling is essential. Brown-out reset must be enabled in CONFIG1L to protect against low-voltage Flash corruption.
TQFP-44 (10x10 mm, 0.8 mm pitch) requires PCB fabrication with 0.4 mm via-in-pad or tented vias; hand-soldering is feasible with a fine tip and flux but a reflow profile per JEDEC J-STD-020 is preferred for production. Route the ICSP pins (RB6/PGC, RB7/PGD, MCLR/VPP) directly to a 6-pin header with no series resistors for in-circuit programming. Place the crystal oscillator within 5 mm of OSC1/OSC2 and guard the traces with a ground pour to reduce EMI.
Do not leave MCLR floating - tie it to VDD through a 10 kohm resistor for normal operation, or drive it from a supervisor / reset IC for production boards. A floating MCLR causes erratic resets. When using the internal oscillator, configure OSCCON defaults in firmware startup - leaving the fuse-set external crystal mode uninitialized traps the MCU. For ADC accuracy, add 1 uF + 100 nF on the VREF+ pin (RA3) when used as a reference, and average at least 16 samples to suppress noise.
Route the analog inputs (AN0-AN7 on PORTA and PORTE) away from digital switching signals to preserve ADC SNR. The PSP bus pins (RD0-RD7, RE0-RE2) are 5 V tolerant and drive higher currents than other I/O; route them on a separate bus and add 100 ohm series resistors near the MCU to dampen reflections when used with parallel peripherals. The CCP1/CCP2 PWM outputs (RC2, RC1) should route to MOSFET gates via 10 ohm gate resistors to control slew rate.
מידע על תאימות
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F4320-E/PT for extended temperature or other AEC-Q100-qualified PIC18F family members for automotive. Lead-free matte-tin plating. Halogen-free molding compound. Conflict-minerals declaration per Microchip sustainability report.