PIC18LF2320-I/SO - 8KB Flash 8-bit MCU 40MHz 28-SOIC | Microchip
MPN: PIC18LF2320-I/SO ✓ Hoạt độngPIC18LF2320-I/SO Tóm tắt
An 8-bit microcontroller is a single-chip processor whose datapath and ALU operate on 8-bit data words, paired with on-chip program memory and peripherals. The PIC18F family is Microchip's high-performance 8-bit tier, sitting between baseline PIC10/12/16 devices and the 16-bit PIC24/dsPIC families in the company's broader MCU hierarchy. PIC18F MCUs add enhanced Flash, hardware multiply, and C-friendly memory models while retaining the 77 single-word instruction RISC architecture used by all PIC microcontrollers, which makes them attractive for legacy software migration from PIC16C/17C parts.
Key features of the PIC18LF2320 include a 10-bit ADC with up to 10 channels, a USART with LIN support, an MSSP module configurable for SPI or I2C (master/slave), a 10-bit PWM module with up to 4 channels, and four timers (Timer0/Timer1/Timer2/Timer3). NanoWatt technology provides several power-saving modes (Sleep, Idle, and a deep RTCC-based mode drawing microamp-level current), enabling battery-backed metering and remote-sensor applications. The 28-pin SOIC gives designers access to 25 digital I/O lines plus analog and oscillator pins.
The PIC18LF2320 uses a Harvard architecture with separate program and data buses, allowing instruction fetch and operand access in the same cycle. The enhanced Flash memory supports self-programmability in the field via ICSP, and the device includes a 32 kHz secondary oscillator for low-power Timer1/RTCC operation. With 10 MIPS throughput and hardware-accelerated bit manipulation, the part targets applications that need deterministic real-time response and flexible peripheral integration without forcing a move to 16-bit or 32-bit cores.
Typical applications include industrial sensor transmitters, HVAC controllers, consumer appliance control boards, battery-powered instrumentation, and low-cost motor-control subsystems. The combination of a low 2.0 V operating floor and nanoWatt sleep current also suits it for solar- or line-powered metering designs that must ride out brownouts. The wide 28-SOIC package is well suited to hand-prototyping on through-hole-friendly SO adapter boards and to cost-sensitive assembly lines.
In any design that already uses a PIC16F midrange device running close to memory or I/O limits, the PIC18LF2320 is often the lowest-risk upgrade path: it preserves the 14-bit instruction set and programmer model while quadrupling program memory and adding hardware multiply, with no PCB redesign required.
This page compiles distributor stock and pricing, drop-in PIC18F/18LF siblings, comparison tables, and applied design notes that go beyond the manufacturer datasheet, giving procurement and design engineers a single reference for evaluating the PIC18LF2320-I/SO.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF2320-I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18LF2320-I/SO (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Communication, ADC, Timers.
PIC18F2320-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F2220-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF2420-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF2520-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF2321-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF2320-I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 (8-bit RISC Harvard) |
| Program Memory (Flash) | 8 KB (4K x 16 words) |
| SRAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 40 MHz |
| Instruction Throughput | 10 MIPS (100 ns instruction cycle) |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 25 |
| ADC | 10-bit, up to 10 channels |
| PWM Channels | Up to 4 (10-bit) |
| Timers | 4 (Timer0/1/2/3) |
| Communication | USART (LIN), MSSP (SPI / I2C) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 28-SOIC (7.50 mm width, 0.295") |
| Số chân | 28 |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 (unlimited floor life) |
| Trạng thái RoHS | Compliant |
| Lead-Free / Halogen-Free | Yes |
Cấu hình chân PIC18LF2320-I/SO
| Chân 1 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Chân 2 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input channel 3 / ADC positive reference |
| Chân 3 | RA4/AN4/T0CKI — PORTA bit 4 / Analog input channel 4 / Timer0 clock input |
| Chân 4 | RA5/AN5/SS/HLVDIN — PORTA bit 5 / Analog input channel 5 / SPI Slave Select / High/Low-Voltage Detect input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | OSC1/RA7 — Crystal oscillator input / PORTA bit 7 |
| Chân 7 | OSC2/RA6 — Crystal oscillator output / PORTA bit 6 |
| Chân 8 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 9 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM output |
| Chân 10 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Chân 11 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 12 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 13 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 14 | RC6/TX/CK — PORTC bit 6 / USART asynchronous transmit / synchronous clock |
| Chân 15 | RC7/RX/DT — PORTC bit 7 / USART asynchronous receive / synchronous data |
| Chân 16 | VSS — Ground reference |
| Chân 17 | VDD — Positive supply voltage (2.0-5.5 V) |
| Chân 18 | RB0/INT0/AN12 — PORTB bit 0 / External interrupt 0 / analog input channel 12 |
| Chân 19 | RB1/INT1/AN10 — PORTB bit 1 / External interrupt 1 / analog input channel 10 |
| Chân 20 | RB2/INT2/AN8 — PORTB bit 2 / External interrupt 2 / analog input channel 8 |
| Chân 21 | RB3/INT3/CCP2/AN9 — PORTB bit 3 / External interrupt 3 / CCP2 I/O / analog input channel 9 |
| Chân 22 | RB4/AN11 — PORTB bit 4 / analog input channel 11 |
| Chân 23 | RB5/PGM/AN13 — PORTB bit 5 / ICSP programming / analog input channel 13 |
| Chân 24 | RB6/PGC — PORTB bit 6 / ICSP clock (programming) |
| Chân 25 | RB7/PGD — PORTB bit 7 / ICSP data (programming) |
| Chân 26 | VSS — Ground reference |
| Chân 27 | AVDD — Analog positive supply |
| Chân 28 | AVSS — Analog ground reference |
Ứng dụng tiêu biểu
PIC18LF2320-I/SO phù hợp cho 6 Áp dụngs: Industrial Sensor Transmitters, HVAC and Building Automation Controllers, Battery-Powered Instrumentation, Consumer Appliance Control Boards, Low-Cost Motor Control / BLDC Drivers, Smart Energy / Metering Edge Nodes.
Industrial Sensor Transmitters
The PIC18LF2320-I/SO fits industrial 4-20 mA and wireless sensor transmitters because of its 2.0-5.5 V operating range, nanoWatt Sleep current, and 10 MIPS throughput at 40 MHz for fast 10-bit ADC sampling. With 25 I/O and 10 ADC channels, one device can read multiple analog sensors, drive a HART modem front-end, and wake periodically on a Timer1/RTCC interrupt. The 28-SOIC package is straightforward to integrate into IP65-rated transmitter housings with through-hole-friendly SO adapter PCBs.
Được đề xuất
HVAC and Building Automation Controllers
For thermostat, damper actuator and fan-coil controllers, the PIC18LF2320-I/SO delivers enough Flash (8 KB) for control-loop firmware, scheduling tables and comms stacks. Its MSSP supports SPI or I2C peripherals typical of sensor front ends (temperature, humidity, CO2), and the USART handles Modbus RTU on RS-485 links to building management systems. The 4-channel PWM directly drives small DC fans or triac-based AC outputs via optos, while the 25 I/O budget accommodates keypad inputs and LCD interfaces for wall-mounted thermostats.
Được đề xuất
Battery-Powered Instrumentation
Battery data loggers and portable test instruments benefit from the PIC18LF2320-I/SO's nanoWatt Sleep mode drawing microamp-level current on its 32 kHz Timer1 oscillator. The 256-byte EEPROM provides 1 million erase/write cycles for user-calibration data, while the 8 KB Flash holds firmware compact enough to leave room for FAT-formatted logging tables. With 25 I/O the part can drive a small TFT/LCD, scan a 4x4 keypad, and poll instrumentation amplifiers - all from a single 3 V lithium cell.
Được đề xuất
Consumer Appliance Control Boards
Washing-machine, dishwasher and induction-cooktop control boards rely on the PIC18LF2320-I/SO for 8-bit deterministic real-time control and tight BOM cost. The 4-channel PWM handles triac phase-angle control of heater elements, while the 10-bit ADC reads temperature sense inputs and mains-voltage zero-cross signals. LIN-capable USART supports automotive-style sub-net interconnects for appliance IoT extensions. The 28-SOIC footprint gives generous creepage distances on the high-voltage side, ideal for motor/inverter sub-boards.
Được đề xuất
Low-Cost Motor Control / BLDC Drivers
Small BLDC and PMSM drivers - such as those found in refrigerator fans, pool pumps, and industrial dampers - can use the PIC18LF2320-I/SO as a supervisory controller in the 28-SOIC package. The 10 MIPS throughput handles modest FOC algorithms and trapezoidal commutation, while the 4-channel PWM drives 3-phase inverter legs via gate drivers. Its 25 I/O lines accept Hall/encoder feedback, push-button inputs, and a UART link to a higher-end display MCU. The 2.0 V VDD minimum is useful when bootstrapping from partially-failed 24 V supplies.
Được đề xuất
Smart Energy / Metering Edge Nodes
Smart electricity and water meter edge nodes are a strong fit for the PIC18LF2320-I/SO because the nanoWatt Sleep mode and 2.0 V minimum voltage allow operation from energy-harvester buffers between communication bursts. The 256-byte EEPROM stores tamper flags and rolling usage history for periods when mains power is removed. With MSSP supporting SPI for metering ICs (ADE7953 family) and a USART for PLC or wireless-M-Bus sub-gig radios, one PIC18LF2320 hosts a complete single-phase energy meter front end.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF2320-I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F2320-I/SO | PIC18F2220-I/SO | PIC18LF2420-I/SO | PIC18LF2520-I/SO | PIC18LF2321-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Flash Memory | 8 KB | 8 KB (same) | 4 KB (-50%) | 16 KB (+100%) | 32 KB (+300%) | 8 KB (same) |
| SRAM | 512 B | 512 B (same) | 512 B (same) | 768 B (+50%) | 1536 B (+200%) | 512 B (same) |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| Operating Voltage | 2.0 V to 5.5 V (LF) | 4.2 V to 5.5 V (F) | 4.2 V to 5.5 V (F) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) |
| Max CPU Frequency | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS |
| ADC Channels | 10 channels | 10 channels | 10 channels | 10 channels | 10 channels | 12 channels (+20%) |
| nanoWatt Sleep Mode | Yes | Limited | Limited | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Lowest-voltage operation with nanoWatt Sleep plus full 40 MIPS throughput (vsPIC18F2320-I/SO)
- Same 28-SOIC pinout, twice the Flash budget (vsPIC18F2220-I/SO)
- Quadrupled Flash headroom while staying in the LF family (vsPIC18LF2420-I/SO)
Ghi chú thiết kế
Estimating nanoWatt Sleep current: at 3 V VDD with 32 kHz Timer1 oscillator running and RTCC enabled, typical Sleep current for the PIC18LF2320-I/SO is on the order of a few microamps per the family datasheet. For battery-powered designs that wake on a 1 Hz RTCC tick, average supply current is approximately (I_wake * t_wake) / t_period, where t_wake covers the wake-up stabilization and ADC sample. Add a 100 nF ceramic bypass close to VDD (pin 17) and a parallel 10 uF bulk at the supply entry to handle inrush during wake transitions.
The 28-SOIC is a wide-body 1.27 mm pitch device, so a double-row SO breakout footprint or hand-solder adapter helps prototype PCBs. Place VDD (pin 17) decoupling within 5 mm of the pin, and route AVDD (pin 27) and AVSS (pin 28) with separate traces to a star ground reference. Keep the crystal traces (OSC1/OSC2 or OSC1/OSC2 + secondary 32 kHz) as short as possible and guard them from PWM outputs on RB3/RC2/RC1 to avoid injection of switching noise into the low-amplitude secondary oscillator.
Three pitfalls to avoid: (1) Do not pull PGD/PGC (RB7/RB6, pins 24/25) into another peripheral role without disabling ICSP - this prevents programming. (2) When migrating between PIC18F2320 and PIC18LF2320 confirm VDD is at least 4.2 V, otherwise the F variant may not boot; the LF variant runs from 2.0 V and is the safer migration target. (3) For internal-oscillator designs with sensitive USART baud rates, calibrate OSCTUNE based on the actual VDD to keep UART timing within +/- 1 % of nominal baud.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only). Lead-free per device marking 'LF' suffix. Halogen-free status not explicitly confirmed in verified web data and is recorded as unknown.
