PIC16LF1508-I/ML - 8-bit XLP MCU, 7KB Flash, 20MHz | Microchip
MPN: PIC16LF1508-I/ML ✓ Hoạt độngPIC16LF1508-I/ML Tóm tắt
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory, RAM, and peripherals into a single package. The PIC16 core family uses a Harvard RISC architecture with a 14-bit instruction word optimized for deterministic execution. PIC16LF variants are the low-voltage members of the family, supporting 1.8V to 3.6V operation, while PIC16F variants extend to 5.5V. Within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The 'XLP' (eXtreme Low Power) designation indicates sub-uA sleep currents suitable for battery-powered applications.
Key features include a 10-bit ADC with multiple channels, two comparators, four 8-bit timers (plus a WDT), on-chip PWM and CWG peripherals, an angular timer, and a Numerically Controlled Oscillator (NCO) for fine-frequency synthesis. The device supports in-circuit serial programming (ICSP), has power-on reset, brown-out reset, and an extended watchdog timer. Operating current is typically tens of uA/MHz active and below 1 uA in sleep, enabling multi-year coin-cell battery life.
Architecturally, the PIC16LF1508 uses a 14-bit modified Harvard pipeline with 8-bit data path. The 7KB Flash is partitioned for self-programmability under software control, and the device includes code protection and a configuration word for fuse-based setup. Compared with 32-bit Cortex-M0 parts at similar cost, the PIC16LF1508 excels at deterministic interrupt latency, ultra-low sleep current, and toolchain simplicity (MPLAB X + XC8).
Typical applications include IoT sensor nodes, low-power wireless transmitters, LED lighting controllers, battery-powered home automation, and portable consumer devices. The 20-QFN package enables compact PCB layouts where board area is constrained, and the 1.8V minimum VDD suits direct Li-ion or coin-cell power. The QFN exposed pad must be soldered to a copper pour for thermal dissipation and electrical ground.
When designing, route the exposed pad (EP) to a solid ground plane with multiple thermal vias, place a 0.1uF VDD decoupling cap within 5mm of every VDD pin, and ensure the ICSP/PGD/PGC lines are accessible for in-circuit programming. Note that the 20-QFN (4x4) is the lowest-pin-count variant of the family; the pin-compatible 20-pin SPDIP, SSOP and SOIC options exist for breadboard or hand-solder prototypes.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1508-I/ML — 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 PIC16LF1508-I/ML (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Timers, Program Memory (Flash), ADC.
PIC16F1508-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1509-I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF1507-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1508-E/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1454-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1508-I/ML Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 (8-bit RISC, 14-bit instruction word) |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data Memory (SRAM) | 256 bytes |
| Operating Frequency | 20 MHz max |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (PIC16LF variant) |
| I/O Pins | 18 |
| Hộp | 20-QFN (4x4 mm) with exposed pad |
| ADC | 10-bit, multiple channels |
| Comparators | 2 |
| Timers | 4 x 8-bit plus WDT |
| Other Peripherals | PWM, CWG, NCO, Angular Timer |
| Programming | ICSP (In-Circuit Serial Programming), self-programmable |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial, 'I' suffix) |
| Trạng thái RoHS | Compliant |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16LF1508-I/ML
| Chân 1 | RA5 — General purpose I/O / analog input / ICSPCLK |
| Chân 2 | RA4 — General purpose I/O / analog input / ICSPDAT |
| Chân 3 | RA3 — General purpose I/O / analog input / MCLR (reset) |
| Chân 4 | RC5 — General purpose I/O / analog input |
| Chân 5 | RC4 — General purpose I/O / analog input |
| Chân 6 | RC3 — General purpose I/O / analog input / SCL |
| Chân 7 | RC2 — General purpose I/O / analog input |
| Chân 8 | RC1 — General purpose I/O / analog input |
| Chân 9 | RC0 — General purpose I/O / analog input |
| Chân 10 | RA2 — General purpose I/O / analog input |
| Chân 11 | RA1 — General purpose I/O / analog input / ICSPCLK alt |
| Chân 12 | RA0 — General purpose I/O / analog input / ICSPDAT alt |
| Chân 13 | VSS — Ground |
| Chân 14 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Chân 15 | OSC1/RA7 — Crystal oscillator input or general purpose I/O |
| Chân 16 | OSC2/RA6 — Crystal oscillator output or general purpose I/O |
| Chân 17 | RC7 — General purpose I/O / analog input |
| Chân 18 | RC6 — General purpose I/O / analog input |
| Chân 19 | RB7 — General purpose I/O / analog input |
| Chân 20 | RB6 — General purpose I/O / analog input / PGC |
Ứng dụng tiêu biểu
PIC16LF1508-I/ML phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, LED Lighting Controller, Low-Power Wireless Transmitter, Portable Consumer Electronics, Industrial Sensor Interface Module, Home Automation Controller.
Battery-Powered IoT Sensor Node
The PIC16LF1508-I/ML is well suited for battery-powered IoT sensor nodes because its XLP architecture delivers sub-uA sleep current at 1.8 V VDD, allowing multi-year coin-cell operation. With 7 KB Flash, the firmware can implement a sensor reading loop, BLE/Zigbee host command handling via UART/SPI, and periodic wake-up via the watchdog timer driven by the 31 kHz LFINTOSC. The 20-QFN (4x4) package fits inside sensor housings where board area is critical, and the 18 GPIO easily handle SPI/I2C sensor interfaces plus LED status indicators. Compared with a 32-bit Cortex-M0 at similar price, the PIC16LF1508 consumes roughly 5x less sleep current and starts up in microseconds for time-critical wake-and-transmit cycles.
Được đề xuất
LED Lighting Controller
The PIC16LF1508-I/ML is a strong fit for LED lighting controllers because of its on-chip PWM peripheral, Configurable Logic Cell, and 10-bit ADC for color/temperature feedback. With 7 KB Flash the firmware can store multi-segment lighting profiles, smooth PWM ramps, and color-mixing tables for RGBW or tunable-white fixtures. The 18 GPIO can drive multiple PWM channels directly and the 1.8-3.6 V VDD range matches Li-ion or 2xAAA powered decorative lamps. The 20-QFN (4x4) keeps the BOM small for cost-sensitive consumer lighting, while the XLP sleep mode lets a touch-wake luminaire idle below 1 uA between user interactions, extending battery life dramatically.
Được đề xuất
Low-Power Wireless Transmitter
For low-power wireless transmitters such as sub-GHz remote controls, key fobs, and simple sensor beacons, the PIC16LF1508-I/ML provides a deterministic 8-bit core, sub-uA sleep current, and enough Flash (7 KB) for stack MAC plus application code. The on-chip NCO peripheral generates precise sub-GHz frequencies for OOK/FSK modulation, while the 10-bit ADC monitors battery voltage for low-battery warnings. The 1.8-3.6 V VDD range suits CR2032 coin cells directly without boost converters, and the 20-QFN (4x4) fits inside the tightest key-fob enclosures. Compared with discrete 8051-based designs, this PIC integrates timers, ADC, and PWM in one chip, reducing BOM and improving reliability.
Được đề xuất
Portable Consumer Electronics
The PIC16LF1508-I/ML suits portable consumer electronics like electronic toys, fitness wearables, and small appliances because of its small 20-QFN footprint, low-voltage operation, and rich on-chip peripherals. With 7 KB Flash and 256 B SRAM, it can drive small OLED displays, manage capacitive touch buttons via the 10-bit ADC, and orchestrate motor control via PWM. The XLP sleep modes (Doze, IDLE, Sleep) keep average current below 20 uA for week-long standby on a single CR2032 coin cell. The PIC16 instruction set simplifies firmware development with free MPLAB X IDE and XC8 compiler, reducing time-to-market for hobbyist and consumer-grade products.
Được đề xuất
Industrial Sensor Interface Module
The PIC16LF1508-I/ML is appropriate for industrial sensor interface modules - signal isolators, 4-20 mA loop translators, and Modbus slave endpoints - because it provides the 10-bit ADC for analog front-ends, UART/SPI/I2C for protocol bridging, and the XLP low-power architecture for loop-powered designs. With 7 KB Flash the firmware can implement Modbus RTU framing plus calibration coefficients, while the 18 GPIO drive status LEDs and optocoupler inputs. The -40 C to +85 C industrial temperature range covers most factory environments. Compared with larger 32-bit MCUs, the PIC16LF1508 costs less and consumes less power for the same protocol-translation workload.
Được đề xuất
Home Automation Controller
The PIC16LF1508-I/ML fits compact home automation controllers - smart blinds, occupancy switches, and HVAC damper drivers - because of its small footprint, low power, and integrated peripherals. With 7 KB Flash, the firmware can implement local logic, schedule timers, and a simple Modbus or proprietary RF protocol. The on-chip NCO peripheral generates accurate timing pulses for triac-fired AC loads, while the 10-bit ADC reads thermistor inputs for temperature-based HVAC control. The 1.8-3.6 V VDD lets a CR123A or 2xAA battery-powered node run for years, and the 20-QFN (4x4) package drops directly onto compact PCBAs designed for in-wall boxes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1508-I/ML — 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 | PIC16F1508-I/ML | PIC16LF1509-I/ML | PIC16LF1507-I/ML | PIC16LF1508-E/ML | PIC16LF1454-I/ML |
|---|---|---|---|---|---|---|
| Package | 20-QFN (4x4) | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Memory | 7 KB | 7 KB | 14 KB | 3.5 KB | 7 KB | 7 KB |
| SRAM | 256 B | 256 B | 1 KB | 128 B | 256 B | 256 B |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 18 | 18 | 18 | 18 | 18 | 18 |
| Temperature Range | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C |
Bảo phân biệt quan trọng
- Lowest-voltage 8-bit MCU in the family (vsPIC16F1508-I/ML)
- Best cost-density ratio in 20-pin QFN XLP family (vsPIC16LF1509-I/ML)
- Most peripheral-rich 20-QFN option at 1.8 V (vsPIC16LF1507-I/ML)
Ghi chú thiết kế
The 20-QFN (4x4) package has an exposed thermal pad (EP) on the underside that MUST be soldered to a ground-plane copper pour with multiple thermal vias for both electrical grounding and thermal dissipation. Estimate: with theta_JA near 60 C/W for QFN-20 and modest 10 mA active current at 3.3 V, the junction self-heats roughly 2 C above ambient - well within the 85 C industrial limit, but the EP pad is still required for EMI performance and Latch-up immunity.
Place a 0.1 uF decoupling capacitor within 5 mm of every VDD pin (pin 14 on the 20-QFN) plus a 10 uF bulk capacitor at the regulator output. For battery applications, add a 1 uF capacitor on MCLR/RA3 to ensure clean power-on reset. The PIC16LF1508-I/ML requires VDD rise time below 50 ms for reliable POR; a slow-rising supply (e.g., from a high-impedance source) may cause incorrect boot behavior. Estimated: typical active current is 130 uA/MHz at 3.3 V per the datasheet, so 20 MHz operation draws roughly 2.6 mA active.
Do NOT assume the LF suffix only means lower voltage - it also restricts maximum clock frequency above 3.6 V. Always check that VDD stays within 1.8-3.6 V before enabling the 20 MHz HFINTOSC. Also, pin RA3/MCLR must NOT be left floating; tie it to VDD through a 10 kOhm pull-up if not used as MCLR. Programming pins ICSPDAT/ICSPCLK (RA4/RA5) must be accessible for in-circuit serial programming during prototype phase, or the device will need factory programming.
Route the I2C SCL/SDA lines (RC3/RC4 on the 20-QFN) as short as possible with 4.7 kOhm pull-ups to VDD; long traces cause signal-integrity issues above 400 kHz I2C. Keep the crystal traces (OSC1/RA7 and OSC2/RA6) symmetrical and surrounded by a ground guard ring to minimize EMI. For ADC accuracy, place the analog inputs (RA0-RA5, RC0-RC7, RB6-RB7) away from switching signals like PWM outputs to avoid coupling noise into the 10-bit ADC conversion.
Thông tin tuân thủ
RoHS and lead-free status per Microchip product page. Not AEC-Q100 qualified - choose automotive-grade PIC MCUs for vehicle applications. Halogen-free status not explicitly stated in datasheet excerpt.
