PIC18F1320-I/ML - 8-bit MCU, 8KB Flash, 40MHz, 28-QFN | Microchip
N.º de pieza: PIC18F1320-I/ML ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.15 | $315,00 |
| 500 | $2.8 | $1.400,00 |
| 1.000 | $2.55 | $2.550,00 |
PIC18F1320-I/ML Descripción general
A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), and programmable I/O peripherals on one die. The PIC18 family is Microchip's enhanced 8-bit architecture line, positioned above the baseline PIC16 family, using a 16-bit instruction word with an 8-bit data path, a hardware 8x8 multiplier, and an extended interrupt model. PIC microcontrollers dominate cost-sensitive embedded control applications where deterministic real-time behavior and a mature ecosystem (MPLAB X IDE, XC8 compiler, MPLAB ICD debug probes) outweigh raw compute throughput.
Key features include nanoWatt Technology power management offering six software-controlled modes, standby current as low as 0.1 uA, ten oscillator modes selectable via FOSC3:FOSC0 configuration bits including a 31 kHz internal oscillator, and sixteen digital I/O pins with interrupt-on-change capability. The 28-QFN package supports compact PCB layouts for space-constrained products such as handheld instruments or sensor pods.
Architecturally, the PIC18F1320 uses a Harvard RISC core with a 16-bit program bus and an 8-bit data bus, providing 10 MIPS peak instruction throughput at 40 MHz. The 10-bit ADC with 7 analog channels (selected from device pins) supports automatic acquisition and conversion sequencing, simplifying sensor-reading firmware. The 256-byte on-chip EEPROM supports non-volatile storage of calibration constants, user settings, or serial numbers without an external memory device.
Typical applications include industrial sensor interfaces, low-power remote controls, battery-powered instrumentation, HVAC peripheral controls, consumer appliance control boards, and portable medical monitoring peripherals. The wide 2.0V-5.5V operating range also enables direct 3.3V or 2xAA-battery operation, and the 0.1 uA standby current makes the device ideal for energy-harvesting or duty-cycled sensor nodes.
When designing with this MCU, place decoupling capacitors within 5 mm of the VDD pins and verify the oscillator configuration bits match the chosen resonator or external crystal. For low-power designs, exploit the nanoWatt sleep modes aggressively between sensor reads - the 0.1 uA standby figure is achievable only with the right configuration bits set and peripherals clock-gated in firmware.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, full pinout mapping, and practical design notes for the PIC18F1320-I/ML that are not assembled on any single manufacturer or distributor page.
Alternativas directas para PIC18F1320-I/ML — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18F1320-I/ML (mismo factor de forma y huella) — difiere en Package, ADC, Core Architecture, Program Memory (Flash), Operating Temperature Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18F1320T-I/ML
✅ Sustitución directa✓ En stock
$2.4 / unidad
Ver hoja de datos →PIC18LF1320-I/ML
✅ Sustitución directa✓ En stock
$3.12 / unidad
Ver hoja de datos →PIC18F1220-I/ML
✅ Sustitución directa✓ En stock
$2.85 / unidad
Ver hoja de datos →PIC18F1320-I/ML Valores máximos y características eléctricas
| Architecture | PIC18 (8-bit Harvard RISC) |
| Instruction Word Size | 16-bit |
| Ancho del bus de datos | 8-bit |
| Program Memory (Flash) | 8 KB (4K x 16 words) |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Frecuencia de reloj máxima | 40 MHz |
| Peak MIPS | 10 MIPS |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Rango de temperatura de funcionamiento | -40 C to +85 C (Industrial) |
| Digital I/O Pins | 16 |
| ADC | 10-bit, up to 7 channels |
| Communication Peripherals | Enhanced USART, MSSP (SPI / I2C) |
| PWM / CCP Modules | Yes (Capture/Compare/PWM) |
| Power-Saving Modes | nanoWatt Technology, 6 modes, 0.1 uA standby |
| Oscillator Options | 10 modes incl. internal 31 kHz, PLL via INT0A |
| Interrupt-on-Change | Yes |
| Encapsulado | 28-QFN (6x6 mm) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| Nivel MSL | 1 (unlimited floor life at <=30 C/85% RH) |
Configuración de pines de PIC18F1320-I/ML
| Pin 1 | RA2 — Digital I/O / analog input AN2 / CVREF |
| Pin 2 | RA3 — Digital I/O / analog input AN3 / VREF+ |
| Pin 3 | RA4 — Digital I/O / analog input AN4 / T0CKI |
| Pin 4 | RA5 — Digital I/O / analog input AN5 / HLVDIN |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA7 — Digital I/O / oscillator OSC2 / CLKOUT |
| Pin 7 | RA6 — Digital I/O / oscillator OSC1 / CLKIN |
| Pin 8 | RC0 — Digital I/O / T1OSO / T1CKI |
| Pin 9 | RC1 — Digital I/O / CCP2 / analog AN6 |
| Pin 10 | RC2 — Digital I/O / CCP1 / analog AN7 |
| Pin 11 | RC3 — Digital I/O / SCL / SCK |
| Pin 12 | RC4 — Digital I/O / SDA / SDI |
| Pin 13 | RC5 — Digital I/O / SDO |
| Pin 14 | RC6 — Digital I/O / TX / CK |
| Pin 15 | RC7 — Digital I/O / RX / DT |
| Pin 16 | VSS — Ground reference |
| Pin 17 | VDD — Positive supply (2.0 V to 5.5 V) |
| Pin 18 | RB0 — Digital I/O / interrupt-on-change / AN10 |
| Pin 19 | RB1 — Digital I/O / interrupt-on-change / AN8 |
| Pin 20 | RB2 — Digital I/O / interrupt-on-change / AN8 |
| Pin 21 | RB3 — Digital I/O / interrupt-on-change / CCP2 |
| Pin 22 | RB4 — Digital I/O / interrupt-on-change |
| Pin 23 | RB5 — Digital I/O / interrupt-on-change / PGM |
| Pin 24 | RB6 — Digital I/O / interrupt-on-change / PGC (ICSP clock) |
| Pin 25 | RB7 — Digital I/O / interrupt-on-change / PGD (ICSP data) |
| Pin 26 | MCLR — Master Clear (reset) input, active low |
| Pin 27 | RA0 — Digital I/O / analog AN0 / ULPWU |
| Pin 28 | RA1 — Digital I/O / analog AN1 |
Aplicaciones típicas
PIC18F1320-I/ML es adecuado para 6 aplicacións: Industrial Sensor Interface, Battery-Powered Instrumentation, HVAC Peripheral Control Board, Consumer Appliance Control Board, Remote Control / RF Transmitter End-Node, Portable Medical Monitoring Peripheral.
Industrial Sensor Interface
The PIC18F1320-I/ML fits industrial sensor interfaces thanks to its 10-bit 7-channel ADC, 40 MHz / 10 MIPS core for real-time signal processing, and nanoWatt Technology that lets the same MCU interface multiple sensor types while consuming less than 1 mA active. Placed as the central controller on a sensor PCB with decoupling within 5 mm of the VDD pins, it reads thermistor, RTD, and 4-20 mA loops via the ADC and drives a 4-digit LED display via I/O expansion. Compared with discrete op-amp + A-to-D + glue-logic designs, this 28-QFN MCU integrates the ADC, EEPROM for calibration constants, and USART for host communication into one IC, cutting BOM cost and PCB area. The industrial -40C to +85C temperature rating plus the wide 2.0V-5.5V input range tolerates factory-floor 24V rails after regulation. Engineers typically pair it with a MCP6002 op-amp for signal conditioning and a 4-20 mA loop transmitter.
Recomendado
Battery-Powered Instrumentation
The PIC18F1320-I/ML fits battery-powered instruments because its nanoWatt Technology delivers 0.1 uA standby and a wide 2.0V-5.5V operating range that supports 2xAA, CR2032, or single Li-ion cells directly. Used in a digital multimeter or handheld data logger with firmware placing the MCU in Sleep between sensor reads, average current drops below 50 uA and a CR2032 set typically delivers 2-3 years of service life. The internal 31 kHz oscillator (selected via FOSC bits) provides low-power timekeeping without an external crystal. Engineers pair it with a low-power LCD segment driver via I2C (MCP23008 / PCF8571) and an external SPI EEPROM for log storage. The 256-byte on-chip EEPROM stores calibration constants so factory calibration survives battery replacement. Compared with discrete timer + ADC solutions, this 28-QFN MCU integrates timing, ADC, and non-volatile storage in a 6x6 mm footprint.
Recomendado
HVAC Peripheral Control Board
The PIC18F1320-I/ML is well matched to HVAC peripheral controls because its 16 digital I/O pins can directly drive relays, triacs, and status LEDs, while its enhanced USART and MSSP (SPI/I2C) connect to a wall thermostat or building-management backbone. Operating from a regulated 5V or 24V-to-5V supply with the industrial -40C to +85C temperature rating, it tolerates the thermal environment of an air-handler cabinet. The Capture/Compare/PWM module generates the timing required for TRIAC phase-angle firing on damper and valve actuators. According to Microchip application notes, integrating nanoWatt Technology sleep between HVAC cycle events reduces peripheral-board standby to below 0.5 mA. Engineers pair it with a MOC3021 optoisolator for mains-side TRIAC drive and a NCP1117 for local 5V regulation. Compared with discrete 555 + logic designs, this 28-QFN MCU replaces 4-5 packages with one IC.
Recomendado
Consumer Appliance Control Board
The PIC18F1320-I/ML fits consumer appliance control boards where its 40 MHz / 10 MIPS core handles user-interface scanning, motor PWM, and serial communication in a single device. Deployed in washing-machine user-interface boards, microwave keypads, or coffee-machine controllers, it scans a 4x4 matrix keypad via interrupt-on-change, drives a character LCD via I2C, and times a brushless DC motor via the CCP/PWM module. The 8 KB Flash holds UI state machines plus a 4 KB firmware updater for ICSP field firmware service, and the 256-byte EEPROM stores user presets across power cycles. The 2.0V-5.5V supply range supports direct 3.3V operation from a small AC-DC module. Engineers pair it with a ULN2003A driver for relay coil drive and a MCP23008 I/O expander for additional button inputs.
Recomendado
Remote Control / RF Transmitter End-Node
The PIC18F1320-I/ML is well matched to RF transmitter end-nodes such as garage-door keyfobs, ceiling-fan controllers, and home-automation remotes because its nanoWatt sleep current of 0.1 uA and 2.0V-5.5V supply range enable multi-year operation from a single CR2032 cell. Used in a 433 MHz / 868 MHz keyf fob with a CC2250 or MICRF113 transmitter, the MCU wakes on a button interrupt, composes a packet, transmits, and sleeps again, achieving average currents below 5 uA in typical duty-cycled use. The internal 24-bit periodicity timer wakes the MCU without an external RTC chip. Engineers pair it with a CC2250 RF transmitter and a MCP7382Q1 Li-ion charger for rechargeable designs. Compared with discrete timer-IC + encoder-chip solutions, this 28-QFN MCU integrates the timing, encoding, and non-volatile storage into one IC.
Recomendado
Portable Medical Monitoring Peripheral
The PIC18F1320-I/ML fits portable medical monitoring peripherals such as pulse-oximeter finger probes, ambulatory ECG event recorders, and Bluetooth spirometer base stations because its 10-bit 7-channel ADC digitizes analog sensor signals and its enhanced USART provides a robust connection to a Bluetooth or Wi-Fi companion module. Operating from a regulated 3.3V supply with industrial temperature rating, the part tolerates close-to-skin thermal exposure in disposable-style probes. The Capture/Compare/PWM module drives LED pulse excitation for SpO2 measurement, and the 8 KB Flash holds sensor-fusion code plus a factory-calibration table. Engineers pair it with an AD620 instrumentation amplifier for the photodiode front-end and an MCP1700 LDO for battery regulation. Compared with discrete op-amp + A-to-D + timer designs, this 28-QFN MCU integrates signal conditioning timing and host interface in a 6x6 mm footprint.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18F1320-I/ML — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F1320T-I/ML | PIC18LF1320-I/ML | PIC18F1220-I/ML | PIC18F1320-I/P |
|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | DIP-18 (NOT drop-in) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Maximum Clock | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| Digital I/O Pins | 16 | 16 | 16 | 15 | 16 |
| ADC | 10-bit, 7 channels | 10-bit, 7 channels | 10-bit, 7 channels | 10-bit, 7 channels | 10-bit, 7 channels |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Standby Current | 0.1 uA | 0.1 uA | 0.1 uA | 0.1 uA | 0.1 uA |
| Approx. Unit Price (qty 1) | USD 4.20 | USD 4.20 | USD 4.30 | USD 4.00 | USD 4.50 |
Diferenciadores clave
- Lower-voltage drop-in replacement available on identical footprint (frente a PIC18LF1320-I/ML)
- Tape-and-reel packaging variant on identical silicon die (frente a PIC18F1320T-I/ML)
- Reduced-pin alternative within the same family (frente a PIC18F1220-I/ML)
- Through-hole prototype variant available (frente a PIC18F1320-I/P)
Notas de diseño
Place 100 nF decoupling capacitors within 5 mm of each VDD pin and a bulk 10 uF tantalum or ceramic capacitor on the main supply rail. For battery-powered designs using the 0.1 uA standby figure, ensure all I/O pins are configured as outputs or inputs with the internal weak pull-ups enabled - floating inputs can leak several microamps and dominate total quiescent current.
The 28-QFN (6x6 mm) package has an exposed thermal pad (EP) on the bottom which MUST be soldered to a copper pad on the PCB tied to VSS. This pad provides the primary heat-dissipation path; a 1 square inch copper pour connected with multiple thermal vias drops thermal resistance from approximately 80 C/W to about 35 C/W, essential for industrial -40C to +85C operation at high clock rates.
Route the ICSP clock (PGC, RB6) and data (PGD, RB7) signals as a short, parallel pair away from switching traces; keep MCLR high via a 10 kohm pull-up to VDD and place the MCLR decoupling capacitor (typically 100 nF) within 5 mm of the pin to suppress ESD events from triggering spurious resets during handling or hot-plug events.
Do not assume the internal 31 kHz oscillator (LFINTOSC) is calibrated to better than +/-2 percent at room temperature - verify against an external reference or use the FOSC configuration to enable the high-frequency internal oscillator (HFINTOSC) with PLL for time-sensitive applications. Also avoid leaving the MCLR pin floating; without a pull-up the device randomly resets under EMI.
The MSSP (SPI/I2C) and enhanced USART pins share physical pins with the ADC inputs on PORTB and PORTC. When using SPI at high speed (above 4 MHz), enable the slew-rate-limited mode via the MSSP control registers to reduce EMI; for I2C above 400 kHz, verify pull-up strength against total capacitive load (typically 4.7 kohm with <=30 pF bus capacitance).
Información de cumplimiento
RoHS compliant per Microchip product page and DigiKey listing. Lead-free (Pb-free) reflow profile per JEDEC J-STD-020. Halogen-free per IEC 61249-2-21. AEC-Q100 not applicable - this part targets industrial/consumer applications, not automotive; for AEC-Q100 qualified alternatives, see PIC18F-K-series family members.
