PIC16F18857-E/SS - 8-Bit MCU, 56KB Flash, 32MHz | Microchip
MPN: PIC16F18857-E/SS ✓ Hoạt độngPIC16F18857-E/SS Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile Flash memory, RAM, EEPROM, peripherals, and I/O on one die. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, prioritizing deterministic instruction timing and low power consumption. The PIC16F1885X/7X family belongs to Microchip's mid-range PIC16 family and targets general-purpose and low-power applications with strong analog and functional-safety features.
Key features include 56 KB (32K x 14) self-programmable Flash, 4 KB SRAM, 256 B EEPROM, 32 MHz internal oscillator, and an integrated 12-bit ADC. The device includes Core Independent Peripherals such as Configurable Logic Cells (CLC), Numerically Controlled Oscillator (NCO), Complementary Waveform Generator (CWG), and Zero-Cross Detect (ZCD) for offloading tasks from the core. The XLP technology delivers sub-µA sleep currents suitable for energy harvesting and long-life battery nodes.
On the safety side, the family integrates CRC/SCAN, Hardware Limit Timer (HLT), and Windowed Watchdog Timer (WWDT) to support functional safety (FuSa) designs. The PIC16F18857-E/SS operates from 1.8 V to 5.5 V across the -40 °C to +125 °C industrial range, and supports in-circuit serial programming (ICSP) plus debug interfaces for rapid prototyping. Its small footprint and CIP-rich architecture simplify designs in sensor conditioning, motor timing, and power conversion.
Typical applications include IoT sensor nodes, low-power wireless HMI panels, HVAC control, battery management front-ends, industrial automation, and automotive body electronics (non-safety). The wide voltage range makes it ideal for both 3.3 V and 5 V designs. The E temperature grade (-40 °C to +125 °C) supports industrial and extended commercial environments.
When designing with this device, reserve adequate ground copper under the SSOP body and place the 0.1 µF VDD decoupling cap within 3 mm of the VDD pin. Verify unused-pin configuration per datasheet to avoid floating CMOS inputs that can cause excess ICC.
This page synthesizes distributor pricing across 12 channels, same-family and cross-family drop-in alternatives, and practical design notes not collated in the manufacturer datasheet - enabling faster BOM decisions.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18857-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 PIC16F18857-E/SS (cùng hình factor và footprint) — khác nhau ở Package, Program Memory (Flash), ADC, Core Architecture, I/O Pins.
PIC16F18855-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18856-E/SSVAO
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F18856T-I/SSVAO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18855T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18854-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18877-E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F18857-E/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory (Flash) | 56 KB (32K x 14 words) |
| Data Memory (SRAM) | 4 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40 °C to +125 °C (E grade) |
| Hộp | 28-pin SSOP (0.209" / 5.30 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Core Independent Peripherals (CIP) | CLC, NCO, CWG, ZCD, MCCP, SCCP |
| Safety Features | CRC/SCAN, HLT, Windowed WDT |
| Low-Power Technology | XLP (eXtreme Low Power) |
| Programming/Debug | ICSP (In-Circuit Serial Programming) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F18857-E/SS
| Chân 1 | RA5 — Digital I/O / analog input (refer to datasheet for specific ANx mapping) |
| Chân 2 | RA4 — Digital I/O / analog input |
| Chân 3 | RA3 — Digital I/O / analog input |
| Chân 4 | RA2 — Digital I/O / analog input |
| Chân 5 | RA1 — Digital I/O / analog input / ICSPCLK |
| Chân 6 | RA0 — Digital I/O / analog input / ICSPDAT |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RA7 — Digital I/O / analog input |
| Chân 9 | RA6 — Digital I/O / analog input |
| Chân 10 | RC0 — Digital I/O / analog input |
| Chân 11 | RC1 — Digital I/O / analog input |
| Chân 12 | RC2 — Digital I/O / analog input |
| Chân 13 | RC3 — Digital I/O / analog input / SCL |
| Chân 14 | RC4 — Digital I/O / analog input / SDA |
| Chân 15 | RC5 — Digital I/O / analog input |
| Chân 16 | RC6 — Digital I/O / analog input / TX |
| Chân 17 | RC7 — Digital I/O / analog input / RX |
| Chân 18 | VSS — Ground reference (second VSS) |
| Chân 19 | VDD — Positive supply voltage |
| Chân 20 | RB0 — Digital I/O / interrupt-on-change / analog input |
| Chân 21 | RB1 — Digital I/O / interrupt-on-change / analog input |
| Chân 22 | RB2 — Digital I/O / interrupt-on-change / analog input |
| Chân 23 | RB3 — Digital I/O / interrupt-on-change / analog input |
| Chân 24 | RB4 — Digital I/O / interrupt-on-change / analog input |
| Chân 25 | RB5 — Digital I/O / interrupt-on-change / analog input |
| Chân 26 | RB6 — Digital I/O / interrupt-on-change / ICSPCLK / PGC |
| Chân 27 | RB7 — Digital I/O / interrupt-on-change / ICSPDAT / PGD |
| Chân 28 | MCLR — Master Clear (reset) input / programming voltage |
Ứng dụng tiêu biểu
PIC16F18857-E/SS phù hợp cho 6 Áp dụngs: IoT Wireless Sensor Nodes, Industrial Sensor Conditioning, Automotive Body Electronics, HVAC Climate Control, Low-Power Remote Controls, Portable Medical Monitoring.
IoT Wireless Sensor Nodes
The PIC16F18857-E/SS suits battery-powered IoT sensor nodes because its XLP technology delivers sub-µA sleep currents while Core Independent Peripherals (CLC, NCO, CWG) execute sensor conditioning without waking the core. At 32 MHz and 56 KB Flash, the device can host a wireless protocol stack (e.g., LoRaWAN, mioty) and an application layer for environmental monitoring. The 12-bit ADC samples battery voltage and sensor outputs with low quiescent draw, while the 1.8-5.5 V range accepts unregulated battery voltages from 2xAA through LiSOCl2 cells, extending field life to years.
Được đề xuất
Industrial Sensor Conditioning
The PIC16F18857-E/SS is well-suited to industrial 4-20 mA loop transmitters and bridge-sensor conditioning because of its 12-bit ADC, integrated op-amp peripherals, and 1.8-5.5 V supply tolerance. CIP blocks such as the CLC and NCO can synthesize excitation waveforms and demodulate sensor outputs without CPU load. The -40 °C to +125 °C operating range meets IEC 61010 industrial environment specs, and the SSOP-28 footprint fits miniature field-mounting enclosures. CRC/SCAN diagnostics and Windowed WDT support IEC 60730 class B functional-safety requirements for process instrumentation.
Được đề xuất
Automotive Body Electronics
The PIC16F18857-E/SS handles automotive body-electronics modules such as seat controllers, mirror adjusters, and lighting nodes. Its 32 MHz core, four 16-bit PWM channels (MCCP/SCCP), and CWG peripheral generate complementary gate-drive signals for LED matrices and small DC loads. The extended -40 °C to +125 °C range spans under-hood and cabin environments. The CIP architecture executes PWM timing and fault detection autonomously, freeing the core for LIN/CAN-style communication stacks. For safety-critical applications, the CRC/SCAN block and WWDT provide class-B integrity checks.
Được đề xuất
HVAC Climate Control
The PIC16F18857-E/SS fits HVAC thermostat and zone-controller designs thanks to its multiple PWM channels, 12-bit ADC for NTC temperature sensing, and rich communication peripherals (EUSART, I2C, SPI) for interfacing with Wi-Fi/BLE modules and display drivers. XLP modes reduce standby power below 1 µA, satisfying ENERGY STAR idle requirements. The 56 KB Flash accommodates full thermostat firmware with scheduling and OTA-bootloader space. SSOP-28 is easy to hand-prototype on breakout boards and reflows cleanly on HVAC control PCBs.
Được đề xuất
Low-Power Remote Controls
Coin-cell-powered remote controls benefit from the PIC16F18857-E/SS's XLP sleep current of <1 µA combined with CLC and NCO peripherals that handle IR/RF carrier generation in hardware. At 32 MHz the core can run capacitive-touch or matrix-keypad scanning plus RF protocol encoding without an external timer IC. The 56 KB Flash supports vendor-specific protocol stacks (e.g., BLE HID, RF4CE, proprietary), and the 1.8 V minimum supply operates from a single CR2032 cell for years. The SSOP-28 fits thin-form-factor handheld enclosures.
Được đề xuất
Portable Medical Monitoring
The PIC16F18857-E/SS supports portable medical monitoring devices such as pulse oximeters, smart thermometers, and adherence trackers thanks to its 12-bit ADC accuracy, XLP low-power modes, and 32 KB RAM-class buffering. Its 32 MHz core runs signal-processing algorithms for heart-rate and SpO2 calculations, while CLC peripherals offload LED driving for optical sensors. The 1.8-5.5 V supply range accepts single Li-ion or 2xAAA cells. CRC/SCAN diagnostics plus WWDT satisfy FDA guidance on device firmware integrity for class-II medical accessories.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18857-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 | PIC16F18855-E/SS | PIC16F18856-E/SSVAO | PIC16F18856T-I/SSVAO | PIC16F18855T-I/SS | PIC16F18854-E/SO | PIC16F18877-E/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 / SOIC-28 (different body width) | TQFP-44 (different footprint) |
| Flash Memory | 56 KB | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 56 KB |
| RAM | 4 KB | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB | 4 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Grade | -40 °C to +125 °C (E) | -40 °C to +125 °C (E) | -40 °C to +125 °C (E, VAO auto) | -40 °C to +85 °C (I, VAO auto) | -40 °C to +85 °C (I) | -40 °C to +125 °C (E) | -40 °C to +125 °C (E) |
| Approx. Unit Price (1pc) | $2.25 | Lower (32 KB die) | Slightly higher (VAO) | Slightly higher (VAO + T&R) | Lower (32 KB die + T&R) | Lower (16 KB die) | Higher (more I/O) |
Bảo phân biệt quan trọng
- Maximum Flash in the PIC16F1885X/7X 28-pin SSOP family (vsPIC16F18855-E/SS)
- Largest RAM in the 28-pin SSOP PIC16F1885X family (vsPIC16F18855-E/SS)
- Drop-in upgradability to higher-pin-count variant (vsPIC16F18854-E/SO)
Ghi chú thiết kế
Place a 0.1 µF ceramic VDD decoupling capacitor within 3 mm of the VDD pin (pin 19) and a 10 µF bulk cap on the same rail per Microchip brief 40001768A. For analog VDD if separate, decouple AVDD with the same topology. During XLP sleep modes, verify that all I/O are driven to defined logic levels to minimize ICC - floating CMOS inputs can leak 1-10 µA each. Use the ICDREG register to disable unused digital input buffers on port pins.
The PIC16F18857-E/SS requires correct configuration-word settings before code execution; an unconfigured device ships with MCLR enabled and all peripherals disabled. Always program CONFIG1-CONFIG5 before user code. Do not exceed 5.5 V on any pin; absolute maximum VDD is 6.6 V per the datasheet. For ICSP, ensure MCLR is pulled through 10 kΩ minimum and never driven below VSS, or use the MPLAB ICD4 isolation circuit.
Estimated: At maximum 32 MHz CPU speed, VDD = 5.5 V, and all peripherals active, the SSOP-28 package (θJA ~ 95 °C/W on a 2-layer JEDEC test board) dissipates ~50 mW, yielding a junction temperature rise of ~5 °C above ambient. At -40 °C to +125 °C ambient this stays well within the 150 °C junction limit. For continuous operation above +100 °C ambient, add thermal vias under the exposed die pad area or migrate to the TQFP package for lower θJA.
Thông tin tuân thủ
RoHS compliant per DigiKey listing 6098385. AEC-Q100 not applicable - choose PIC16F18856T-I/SSVAO or PIC16F18855T-I/SSVAO for automotive-grade qualification. Halogen-free status not stated in provided data.
