PIC16LF18456-I/SP - 32MHz 8-bit MCU, 28KB Flash, XLP | Microchip
MPN: PIC16LF18456-I/SP ✓ Hoạt độngPIC16LF18456-I/SP Tóm tắt
An 8-bit microcontroller (MCU) is a small computer built on a single IC containing a CPU, program memory (Flash), data memory (RAM), and integrated peripherals. Within the taxonomy MCU -> microcontroller -> embedded processor -> semiconductor, 8-bit PIC MCUs target cost-sensitive and low-power applications where deterministic real-time response and ease of programming outweigh raw throughput. The 'LF' prefix denotes the low-voltage (1.8V-3.6V) variant of the F-series, enabling battery-powered designs.
Key features include 26 general-purpose I/O pins, 12-bit Analog-to-Digital Converter with Computation (ADCC) supporting automated averaging, filtering, and threshold comparison, two 10-bit PWMs with independent time bases, a 5-bit DAC, and Core Independent Peripherals (CIPs) such as CWG and NCO that offload tasks from the CPU. The integrated EUSART plus dual SPI/I2C provide flexible communication for sensor and display interfaces.
The PIC16LF18456 implements a Harvard RISC architecture with a 14-bit instruction word and 16-level hardware stack, optimized for low-power operation through XLP nanoWatt techniques including sleep currents below 50 nA typical and multiple idle/sleep modes. The 28-pin SPDIP package simplifies breadboarding and field-serviceable designs while still exposing the full peripheral set of the family.
Typical applications include battery-powered sensor nodes, IoT edge devices, low-power wireless sensor hubs, handheld instrumentation, LED lighting controllers with analog dimming, and consumer appliances requiring mixed-signal front-ends. The wide 1.8V-3.6V VDD range supports direct Li-ion or 2xAA battery operation.
When designing with this device, allocate the 28KB Flash budget across the application code, bootloader (if used), and configuration words. Decouple VDD with a 100nF ceramic capacitor placed within 5 mm of the IC, and route the MCLR pin through a 10k pull-up to VDD with a 100nF capacitor for noise-free reset. The ICSP programming footprint should be reserved on the PCB even if in-circuit programming is not used initially.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet to accelerate Microchip PIC16LF18456 selection and second-source qualification.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF18456-I/SP — 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 PIC16LF18456-I/SP (cùng hình factor và footprint) — khác nhau ở ADC, Core Architecture, MSL Level, Package, Mounting Type.
PIC16F18456-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF18455-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF18456-E/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF18456-I/SP Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 8-bit RISC, 14-bit instruction word |
| Tần số xung maksimum | 32 MHz |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 26 |
| ADC | 12-bit ADCC (with Computation) |
| DAC | 5-bit DAC |
| PWM Modules | 2 x 10-bit PWM |
| Comparators | Yes |
| CWG (Complementary Waveform Generator) | Yes |
| EUSART | 1 |
| SPI / I2C | 2 (configurable) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 28-pin SPDIP (0.300", 7.62mm), Through-Hole |
| Kiểu lắp đặt | Through-Hole |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 1 (not moisture-sensitive, through-hole) |
Cấu hình chân PIC16LF18456-I/SP
| Chân 1 | RA5 — Port A bit 5 / ICSPDAT |
| Chân 2 | RA4 — Port A bit 4 |
| Chân 3 | RA3 — Port A bit 3 / MCLR (if MCLRE=1) |
| Chân 4 | RA2 — Port A bit 2 |
| Chân 5 | RA1 — Port A bit 1 |
| Chân 6 | RA0 — Port A bit 0 |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RA7 — Port A bit 7 / OSC1 |
| Chân 9 | RA6 — Port A bit 6 / OSC2 |
| Chân 10 | RC0 — Port C bit 0 |
| Chân 11 | RC1 — Port C bit 1 |
| Chân 12 | RC2 — Port C bit 2 |
| Chân 13 | RC3 — Port C bit 3 / SCL1 (I2C) |
| Chân 14 | RC4 — Port C bit 4 / SDA1 (I2C) |
| Chân 15 | RC5 — Port C bit 5 |
| Chân 16 | RC6 — Port C bit 6 / TX1 (EUSART) |
| Chân 17 | RC7 — Port C bit 7 / RX1 (EUSART) |
| Chân 18 | VSS — Ground reference (second VSS) |
| Chân 19 | VDD — Positive supply voltage |
| Chân 20 | RB0 — Port B bit 0 / AN12 |
| Chân 21 | RB1 — Port B bit 1 / AN10 |
| Chân 22 | RB2 — Port B bit 2 / AN8 |
| Chân 23 | RB3 — Port B bit 3 / AN9 |
| Chân 24 | RB4 — Port B bit 4 |
| Chân 25 | RB5 — Port B bit 5 |
| Chân 26 | RB6 — Port B bit 6 / ICSPCLK |
| Chân 27 | RB7 — Port B bit 7 |
| Chân 28 | VDD — Positive supply voltage (second VDD) |
Ứng dụng tiêu biểu
PIC16LF18456-I/SP phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Hub, Handheld Test & Measurement Instrument, LED Lighting Controller with Analog Dimming, Consumer Appliance Control Board, Wireless Sensor Node with CWG-Driven Piezo Buzzer, Industrial Process Sensor Front-End.
Battery-Powered IoT Sensor Hub
The PIC16LF18456-I/SP suits battery-powered IoT sensor hubs thanks to its 1.8V-3.6V VDD range, XLP nanoWatt sleep modes below 50 nA typical, and 26 GPIO for sensor fan-in. Its 12-bit ADCC with hardware-averaging samples temperature, humidity, and battery voltage while the CPU sleeps, then wakes the EUSART to push packets over SPI/I2C-connected radios. The 28KB Flash accommodates a small RTOS, over-the-air update bootloader, and a 2KB SRAM buffer for queued payloads.
Được đề xuất
Handheld Test & Measurement Instrument
The 12-bit ADCC, 5-bit DAC, two PWMs, and CWG make the PIC16LF18456-I/SP a strong fit for handheld multimeters and signal sources. The 32MHz core drives real-time waveform generation via CWG, while the ADCC samples inputs with hardware oversampling for noise rejection. The 28-pin SPDIP simplifies breadboarding prototypes and field-replaceable units where through-hole parts are preferred over SMD for repairability.
Được đề xuất
LED Lighting Controller with Analog Dimming
The Complementary Waveform Generator (CWG) and 2x 10-bit PWM modules of the PIC16LF18456-I/SP drive full-bridge LED drivers and analog-dimmed constant-current regulators. The 5-bit DAC and Comparator provide closed-loop thermal foldback without CPU intervention, while XLP technology keeps standby power below 1 mA for always-on smart lighting fixtures.
Được đề xuất
Consumer Appliance Control Board
With 26 GPIO, the PIC16LF18456-I/SP directly drives user-interface keypads, seven-segment displays, relays, and triac interfaces in washing machines, coffee makers, and air purifiers. The industrial -40C to +85C temperature range and the 12-bit ADCC handle NTC temperature sensing plus motor-current monitoring, while EUSART enables connectivity to higher-level HMI boards.
Được đề xuất
Wireless Sensor Node with CWG-Driven Piezo Buzzer
The PIC16LF18456-I/SP's CWG drives a piezo buzzer for local alarm generation in security and environmental monitoring nodes without CPU overhead. The dual SPI/I2C interfaces connect a sub-GHz transceiver and a digital sensor (e.g., accelerometry or air-quality), and the 28KB Flash hosts a small wireless protocol stack plus the sensor-processing pipeline, all running on a coin-cell or 2xAA battery at <50 nA sleep current.
Được đề xuất
Industrial Process Sensor Front-End
The PIC16LF18456-I/SP acts as a low-power analog front-end for industrial 4-20 mA loop sensors and bridge-type pressure transducers. The 12-bit ADCC's hardware-averaging and oversampling achieve effective >14-bit resolution at low sample rates, while the 5-bit DAC trims sensor offset. The EUSART implements HART or RS-485 half-duplex communication, and the -40C to +85C range covers industrial enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF18456-I/SP — 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 | PIC16F18456-I/SP | PIC16LF18455-I/SP | PIC16LF18456-E/SO |
|---|---|---|---|---|
| Package | 28-pin SPDIP (0.300") | 28-pin SPDIP (0.300") - same | 28-pin SPDIP (0.300") - same | 28-pin SOIC (SO) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 28 KB (16K x 14) | 28 KB (16K x 14) | 14 KB (8K x 14) -50% | 28 KB (16K x 14) |
| Data SRAM | 2 KB | 2 KB | 1 KB -50% | 2 KB |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 2.3 V to 5.5 V (wider range) | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Maximum Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 26 | 26 | 26 | 26 |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
Bảo phân biệt quan trọng
- Lowest-voltage variant in the F18456 family (vsPIC16F18456-I/SP)
- Doubled program memory vs the lower F18455 variant (vsPIC16LF18455-I/SP)
- Industrial -40C to +85C temperature grade vs extended variant (vsPIC16LF18456-E/SO)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin (pins 19 and 28 on the 28-pin SPDIP). Add a bulk 10 uF tantalum or aluminum-polymer capacitor at the board input if the supply rail exceeds 10 cm trace length. For battery operation, the LF (1.8V-3.6V) variant draws roughly 30-50% less active current than the F variant at the same clock rate.
Reserve the ICSP footprint (RA5/ICSPCLK, RA4/ICSPDAT, MCLR/RA3, VDD, VSS) on every PCB even if in-circuit programming is not initially planned. Layout the MCLR pin with a 10 k pull-up to VDD and a 100 nF capacitor to ground; omit the capacitor only if brownout digital design constraints permit direct MCLR drive.
Configuration words must be set BEFORE the first code execution: oscillator selection (HS/XT/LP/RC), watchdog timer enable/disable, brownout voltage, MCLR pin function, and code protection bits. A wrong oscillator configuration can lock the device in an unprogrammable state if WDT is also enabled. Estimate: configuration words are at Flash address 0x8007 and 0x8008 for PIC16LF18456; refer to datasheet DS40002038C for the exact layout.
Estimated: at 32 MHz, 3.3V VDD, and 70% peripheral duty cycle, the PIC16LF18456-I/SP draws roughly 5-7 mA active current (~16-23 mW dissipation). The 28-pin SPDIP package has typical theta_JA around 60 C/W in still air, resulting in a junction temperature rise of only 1-1.5 C above ambient - well below the +85 C industrial limit.
Thông tin tuân thủ
RoHS-compliant per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade part. For automotive applications, refer to the AEC-Q100-qualified PIC16F18456 variants instead.
