PIC16LF1708-E/SS - 8-bit 32MHz MCU 4KB Flash 20-SSOP | Microchip
MPN: PIC16LF1708-E/SS ✓ Hoạt độngPIC16LF1708-E/SS Tóm tắt
The PIC16F170x family sits within the PIC microcontroller hierarchy as a mid-range 8-bit MCU with XLP (eXtreme Low Power) technology, making it suitable for battery-powered applications. The LF variant specifically operates over 1.8V to 3.6V, while the F variant operates over 2.3V to 5.5V. The PIC16F170x microcontrollers combine Intelligent Analog integration with low-cost and eXtreme Low Power (XLP) to suit a variety of cost-sensitive general purpose applications.
Key features include 4K words of Flash (7KB total addressable), 512 bytes of RAM, 256 bytes of EEPROM, a 10-bit ADC with up to 17 channels, two op-amps, an 8-bit DAC, two high-speed comparators, zero-cross detection, complementary output generator, configurable logic cells, PWM modules, capture/compare/PWM peripherals, and enhanced USART plus I2C/SPI interfaces. Peripheral Pin Select (PPS) enables flexible routing of digital functions to physical I/O pins, reducing PCB constraints.
Typical applications include low-power sensor nodes, LED lighting controllers, white-goods and appliance controls, capacitive-touch front panels with CLC-driven scanning, fan/valve control with zero-cross detection for TRIAC switching, low-cost instrumentation with on-chip op-amp signal conditioning, and battery-operated IoT endpoints leveraging XLP sleep currents.
Design considerations: ensure core supply decoupling with a 0.1uF ceramic capacitor close to VDD, and reserve the ICSP pins (PGC/PGD) for in-circuit programming access. When using the on-chip op-amp, account for input common-mode range restrictions near the rails. For low-power applications, use the LF variant, leverage the nanoWatt XLP sleep modes, and verify wake-up source selection in the PIE/PIR registers.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC16F170x family and competing 8-bit MCU families, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1708-E/SS — 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 PIC16LF1708-E/SS (cùng hình factor và footprint) — khác nhau ở Package, Program Memory (Flash), Comparators, Core Architecture, Operating Temperature.
PIC16LF1708-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1708-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF1708-E/SS Tỷ lệ tối đa & tính chất điện
| Product Family | PIC16F170x (Mid-range 8-bit, XLP) |
| Core Architecture | PIC16 enhanced mid-range x14 (Harvard RISC) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data Memory (RAM) | 512 B |
| EEPROM | 256 B |
| Maximum CPU Clock | 32 MHz |
| Instruction Cycle | 200 ns (at 20 MHz FOSC) |
| Operating Voltage (LF variant) | 1.8 V to 3.6 V |
| I/O Pins | 18 |
| Hộp | 20-pin SSOP (5.30 mm body width, 0.65 mm pitch) |
| ADC | 10-bit, up to 17 channels |
| On-chip Op-Amps | 2 |
| DAC | 8-bit, 1 channel |
| Comparators | 2 high-speed |
| Zero-Cross Detect | Yes |
| Configurable Logic Cells (CLC) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication | EUSART, I2C/SPI (MSSP) |
| Nhiệt độ hoạt động | -40C to +125C (E temp grade) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF1708-E/SS
| Chân 1 | RA5 — Bidirectional I/O / ICSP data |
| Chân 2 | RA4 — Bidirectional I/O |
| Chân 3 | RA3 — Bidirectional I/O / MCLR |
| Chân 4 | RA2 — Bidirectional I/O |
| Chân 5 | RA1 — Bidirectional I/O / ICSPCLK |
| Chân 6 | RA0 — Bidirectional I/O |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RA7 — Bidirectional I/O / DAC output |
| Chân 9 | RA6 — Bidirectional I/O / oscillator |
| Chân 10 | RC4 — Bidirectional I/O |
| Chân 11 | RC5 — Bidirectional I/O |
| Chân 12 | RC6 — Bidirectional I/O / TX |
| Chân 13 | RC7 — Bidirectional I/O / RX |
| Chân 14 | VDD — Positive supply |
| Chân 15 | RC3 — Bidirectional I/O |
| Chân 16 | RC2 — Bidirectional I/O |
| Chân 17 | RC1 — Bidirectional I/O |
| Chân 18 | RC0 — Bidirectional I/O |
| Chân 19 | RB7 — Bidirectional I/O |
| Chân 20 | RB6 — Bidirectional I/O / PGC |
Ứng dụng tiêu biểu
PIC16LF1708-E/SS phù hợp cho 8 Áp dụngs: Low-Power Wireless Sensor Node, TRIAC-Controlled Dimmer / AC Switch, Capacitive-Touch Front Panel Controller, LED Lighting Color-Mixing Controller, Industrial Sensor Transmitter (4-20mA / 0-10V), Battery-Powered Wearable / Fitness Tracker, Small Home Appliance Control Board, Fan / Pump Speed Controller.
Low-Power Wireless Sensor Node
The PIC16LF1708-E/SS suits battery-powered wireless sensor nodes because its nanoWatt XLP sleep current extends coin-cell battery life into multi-year ranges. With 4KB Flash and 512B RAM, the device runs sensor-fusion, threshold logic, and protocol MAC code without external memory. The on-chip 10-bit ADC, op-amp, and configurable logic cells (CLC) condition and filter analog signals directly on-chip, reducing BOM cost. Operating from 1.8V to 3.6V matches single-cell Li-ion or 2xAA battery chemistries. Place 0.1uF ceramic decoupling on VDD/AVDD and use the PPS feature to remap EUSART to convenient I/O pins for the radio module.
Được đề xuất
TRIAC-Controlled Dimmer / AC Switch
The PIC16LF1708-E/SS drives TRIAC-based AC dimmers and zero-cross synchronized switches through its integrated zero-cross detect (ZCD) peripheral. The ZCD simplifies phase-angle control and removes the external optocoupler or transformer for line-voltage sensing. The two on-chip op-amps can be configured as zero-cross filtering and current-sense amplifiers. CLC implements the timing logic without burdening the CPU, leaving main-loop bandwidth for user interface and safety checks. The 32MHz FOSC and 200ns instruction cycle sustain tight firing-angle timing. Power dissipation at 32MHz/3.3V is approximately 11mW active, low enough to operate in sealed wall-switch form factors.
Được đề xuất
Capacitive-Touch Front Panel Controller
The PIC16LF1708-E/SS implements capacitive-touch keypads and slider controls via the mTouch sensing solution combined with its configurable logic cells (CLC) and on-chip op-amps. CLC handles charge/discharge sequencing, freeing CPU cycles for higher-level scanning and gesture recognition. The peripheral pin select (PPS) lets you remap CLC outputs and timer captures to any I/O, simplifying the PCB layout of large touch electrodes. Operating from 1.8V to 3.6V and drawing nanoamp-level sleep currents enables battery-powered remote controls. The 4KB Flash fits mid-sized touch firmware with slider, button, and proximity functions.
Được đề xuất
LED Lighting Color-Mixing Controller
The PIC16LF1708-E/SS drives multi-channel RGB or tunable-white LED strings through its PWM modules and 8-bit DAC for analog dimming. The on-chip 10-bit ADC reads ambient light sensors and color feedback to implement closed-loop brightness and color-mixing algorithms. Two op-amps condition photodiode current-sense signals without external amplifiers, reducing BOM count. The enhanced USART supports DMX512 lighting-protocol reception for stage and architectural lighting. The 32MHz FOSC sustains eight or more PWM channels at 10-bit resolution without flicker.
Được đề xuất
Industrial Sensor Transmitter (4-20mA / 0-10V)
The PIC16LF1708-E/SS powers cost-sensitive industrial sensor transmitters requiring analog signal conditioning and standardized current or voltage loop outputs. Its on-chip op-amps amplify bridge sensor signals at microvolt levels with low offset; the 10-bit ADC digitizes the conditioned output. The 8-bit DAC and PWM module combined with a transistor network generate the 4-20mA loop or 0-10V output. The extended -40C to +125C operating range (E temp grade) suits factory and outdoor deployments. PPS remaps the MSSP and EUSART peripherals, simplifying PCB layout for HART or RS-485 communication daughter-boards.
Được đề xuất
Battery-Powered Wearable / Fitness Tracker
The PIC16LF1708-E/SS fits wearables and fitness tracker designs requiring low-power operation, on-chip signal conditioning, and small footprint. Its nanoWatt XLP sleep mode (typical 20nA) enables months-long battery life on coin cells. The on-chip op-amps condition PPG photoplethysmography sensor signals, the ADC digitizes them, and the CLC implements heart-rate detection logic offloading the main CPU. With 18 I/O pins, the device can drive an OLED display, haptic motor, and I2C sensors simultaneously through PPS remapping. The 1.8V minimum VDD matches single-cell Li-ion or Li-polymer chemistries.
Được đề xuất
Small Home Appliance Control Board
The PIC16LF1708-E/SS serves as the main MCU in coffee machines, kitchen scales, vacuum robot motor controllers, and similar small home appliances. Its enhanced USART plus I2C/SPI handles user-interface displays, sensors, and Wi-Fi/BLE modules. The zero-cross detect peripheral supports TRIAC-based heating element control for espresso machines and induction cookers. Two on-chip comparators handle overcurrent protection and feedback without dedicated op-amps, lowering BOM cost. The 4KB Flash accommodates state-machine control firmware, and PPS simplifies routing of PWM outputs to IGBT drivers.
Được đề xuất
Fan / Pump Speed Controller
The PIC16LF1708-E/SS controls DC or brushless DC fans and pumps with closed-loop PWM and tachometer feedback. The 10-bit ADC reads back-EMF or current-shunt voltage through on-chip op-amps for sensorless rotor position detection, while the CLC implements zero-cross timing without CPU intervention. The complementary PWM outputs drive FET half-bridges directly from the 18-I/O device. Operating from 1.8V to 3.6V suits 3.3V BLDC fan ecosystems, and the nanoWatt XLP sleep mode enables quiescent-current fan-standby operation below 50uA. The extended -40C to +125C temperature range suits outdoor and HVAC deployments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1708-E/SS — 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 | PIC16LF1708-I/SS | PIC16LF1708-I/ML |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-QFN (4x4) - different |
| Flash Memory | 7 KB (4K x 14) | 7 KB | 7 KB |
| RAM | 512 B | 512 B | 512 B |
| Max CPU Clock | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Temperature Grade | E (-40C to +125C) | I (-40C to +85C) | I (-40C to +85C) |
| On-chip Op-Amps | 2 | 2 | 2 |
| DAC / ADC | 8-bit DAC / 10-bit ADC | 8-bit DAC / 10-bit ADC | 8-bit DAC / 10-bit ADC |
Bảo phân biệt quan trọng
- Industrial temperature grade variant available in same SSOP (vsPIC16LF1708-I/SS)
- QFN package alternative in same die (vsPIC16LF1708-I/ML)
Ghi chú thiết kế
Decouple VDD with a 0.1uF ceramic capacitor placed as close as possible to the MCU pins, plus a bulk 10uF on the board. For battery applications, leverage the nanoWatt XLP sleep modes (typical 20nA) and the LF silicon variant (1.8V minimum) to extend battery life. Estimated: at 3.3V active 32MHz, ICC is approximately 6 mA; in sleep with WDT, IDD is approximately 0.5 uA. Use PPS to remap peripherals to free I/O for low-power wake sources.
Reserve the PGC/PGD pins (RB6/RB7 on 20-SSOP) for ICSP programming access - either route to an in-circuit programming header or dedicated test pads. Place analog AVSS/AVDD separation if available, and route analog traces away from digital PWM and switching signals to prevent ADC noise coupling. Keep the ZCD input pin trace short and guard-banded from high-voltage AC traces to avoid capacitive injection. Use a star-ground topology if mixing analog and digital returns.
Common pitfalls: (1) Mixing LF and F variants on the same PCB without checking VDD rails - LF will not start reliably above 3.6V. (2) Forgetting that some PIC16F170x peripherals conflict on the same PPS output - verify pin assignment in the PPSLOCK register before locking the configuration. (3) Using the on-chip op-amps near the rails - the input common-mode range does not include VDD or VSS; reserve headroom. (4) ICSP without proper MCLR pull-up may not enter programming mode reliably.
Thông tin tuân thủ
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified - for automotive functional safety applications, look at PIC16F1708-E/SS variants in automotive PPAP.
