PIC16F18854-I/SS - 8-Bit 32MHz 7KB Flash MCU, 28-SSOP | Microchip
MPN: PIC16F18854-I/SS ✓ Hoạt độngPIC16F18854-I/SS Tóm tắt
What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is a family of 8-bit, 16-bit, and 32-bit microcontrollers from Microchip Technology built on a Harvard RISC architecture. PIC microcontrollers sit in the broader category of embedded microcontrollers -> microcontrollers -> microprocessors -> integrated circuits -> semiconductors. The 8-bit PIC16F family targets cost-sensitive, ultra-low-power general-purpose embedded designs and is one of the most widely deployed 8-bit architectures in industrial and consumer electronics worldwide.
Key features of the PIC16F18854 include 32 MHz internal oscillator operation, 7 KB self-programmable Flash, 512 bytes SRAM, 256 bytes EEPROM, 18 enhanced mid-range core ADC channels with 12-bit resolution, and a 5-bit DAC. The device also integrates multiple CIPs such as Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and Zero-Cross Detect (ZCD), enabling deterministic peripheral behavior without CPU intervention. These blocks are critical for low-power, real-time, safety-conscious applications and can replace external logic, timers, or op-amps with on-chip silicon.
From an architecture perspective, the PIC16F18854 uses a 14-bit instruction word enhanced mid-range core with a hardware stack and 49 instructions. The XLP feature set delivers typical sleep currents as low as 30 nA with RTC, supporting battery-backed IoT edge nodes and remote sensors that must run for years on a single cell. The 28-SSOP variant is suitable for hand-soldered prototypes and low-density production runs where QFN or TQFP packages are not required.
Typical applications include IoT sensor nodes, home automation controllers, low-power wireless sensor interfaces, industrial control and HMI, LED lighting control, and small consumer appliances. Designers select this part when CIP integration allows them to replace external logic, MCUs, and timers with a single chip, reducing BOM and PCB area. The FuSa peripherals (CRC/SCAN, WWDT, HLT) also make it a strong fit for IEC 60730 Class B and IEC 61508 SIL-1 safety-class end products.
When designing with this part, use the MPLAB X IDE with the XC8 compiler and configure the Configuration Words to lock unused peripherals and pin assignments. Always allocate the WWDT and CRC/SCAN blocks for functional-safety or IEC 61508 SIL-class designs. This page synthesizes XAIPART distributor pricing, drop-in alternatives from the Site MPN list, and practical design notes not aggregated elsewhere.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18854-I/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 PIC16F18854-I/SS (cùng hình factor và footprint) — khác nhau ở ADC, Package, MSL Level, Operating Temperature, I/O Pins.
PIC16F18855-I/SSVAO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18854-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F18854-I/MM
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F18854-E/SS
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F18876-I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F18854-I/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit enhanced mid-range (Harvard RISC) |
| Instruction Word | 14-bit |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| ADC | 12-bit, up to 18 channels |
| DAC | 5-bit |
| Operating Voltage (Vdd) | 1.8 V to 5.5 V |
| I/O Pins | 25 |
| Hộp | 28-pin SSOP |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Communication Peripherals | EUSART, I2C, SPI |
| Functional Safety (FuSa) | CRC/SCAN, HLT, WWDT |
Cấu hình chân PIC16F18854-I/SS
| Chân 1 | RA2 — Bidirectional I/O / analog / CCP |
| Chân 2 | RA3 — Bidirectional I/O / analog / reference voltage |
| Chân 3 | RA4 — Bidirectional I/O / analog / T0CKI |
| Chân 4 | RA5 — Bidirectional I/O / analog / IOC |
| Chân 5 | RA6 — Bidirectional I/O / analog / OSC2 |
| Chân 6 | RA7 — Bidirectional I/O / analog / OSC1 |
| Chân 7 | Vss — Ground reference |
| Chân 8 | RA1 — Bidirectional I/O / analog / ICSPCLK |
| Chân 9 | RA0 — Bidirectional I/O / analog / ICSPDAT |
| Chân 10 | RA0 — Bidirectional I/O / analog / ICSPDAT (alternate) |
| Chân 11 | Vdd — Positive supply voltage 1.8V-5.5V |
| Chân 12 | RA0 — Bidirectional I/O / analog (alternate) |
| Chân 13 | RA1 — Bidirectional I/O / analog (alternate) |
| Chân 14 | RC0 — Bidirectional I/O / analog / SCL |
| Chân 15 | RC1 — Bidirectional I/O / analog / SDA |
| Chân 16 | RC2 — Bidirectional I/O / analog |
| Chân 17 | RC3 — Bidirectional I/O / analog / SCL alt |
| Chân 18 | RC4 — Bidirectional I/O / analog / SDA alt |
| Chân 19 | RC5 — Bidirectional I/O / analog |
| Chân 20 | RC6 — Bidirectional I/O / analog / TX |
| Chân 21 | RC7 — Bidirectional I/O / analog / RX |
| Chân 22 | Vss — Ground reference |
| Chân 23 | RB0 — Bidirectional I/O / IOC / ZCD |
| Chân 24 | RB1 — Bidirectional I/O / IOC |
| Chân 25 | RB2 — Bidirectional I/O / IOC |
| Chân 26 | RB3 — Bidirectional I/O / IOC / CCP |
| Chân 27 | RB4 — Bidirectional I/O / IOC |
| Chân 28 | RB5 — Bidirectional I/O / IOC / MCLR |
Ứng dụng tiêu biểu
PIC16F18854-I/SS phù hợp cho 6 Áp dụngs: IoT Sensor Node Controller, Home Automation & Smart Lighting Controller, Industrial Sensor & HMI Front-End, Low-Power Wireless Sensor Interface, Functional Safety Appliance Control, Small Consumer Appliance & Toy Electronics.
IoT Sensor Node Controller
The PIC16F18854-I/SS is a strong fit for battery-backed IoT sensor nodes because of its XLP architecture with approximately 30 nA sleep current (RTC running) and 32 MHz internal oscillator. With 7 KB Flash, 512 B SRAM, and 256 B EEPROM, the part can run a small LoRaWAN / BLE-beacon / Modbus state machine, store calibration constants in EEPROM, and wake on timer or external interrupt. The 18-channel 12-bit ADC directly digitizes thermocouple, load-cell, and battery-voltage signals without an external front-end. Designers typically pair this MCU with a sub-GHz or BLE transceiver in a 2xAA or coin-cell enclosure.
Được đề xuất
Home Automation & Smart Lighting Controller
The PIC16F18854-I/SS serves as the local controller in home automation hubs, smart switches, and dimmable LED drivers. The CWG peripheral produces hardware-generated complementary PWM without CPU load, while the ZCD detects mains zero-crossings for TRIAC phase-angle control. The 5-bit DAC and 12-bit ADC support analog dimming interfaces (0-10V) and current sensing. CIP blocks (CLC, NCO) replace external logic that would otherwise be required to debounce mechanical switches and modulate PWM. With 25 I/O pins, the MCU can simultaneously drive multiple LED channels, an I2C keypad, and a UART-connected wireless module.
Được đề xuất
Industrial Sensor & HMI Front-End
The PIC16F18854-I/SS is well suited to industrial sensor front-ends and simple HMI panels because of its industrial -40 C to +85 C operating range and FuSa peripheral set. The WWDT and CRC/SCAN blocks enable IEC 60730 Class B compliance for household appliances, while the 12-bit ADC handles 4-20 mA loop digitization. The 28-SSOP package is hand-solderable, simplifying field service and rework. The EUSART and SPI peripherals connect to RS-485 transceivers and external FRAM for non-volatile logging. Designers rely on the CIP architecture to offload timing-critical tasks (PWM, quadrature decode) from the CPU.
Được đề xuất
Low-Power Wireless Sensor Interface
The PIC16F18854-I/SS pairs naturally with sub-GHz or BLE transceivers as the host MCU for low-power wireless sensor interfaces. The CLC peripheral implements bit-banging protocols in hardware, freeing the CPU to stay asleep between packet bursts. The NCO generates precise frequency-shift-keying (FSK) tones for OOK/FSK modulation without an external modulator. With 7 KB Flash, the MCU can host small protocol stacks (Wireless M-Bus, proprietary sub-GHz, BLE-beacon) and store sensor calibration in EEPROM. The XLP sleep current of approximately 30 nA keeps the average node current well below 1 uA in duty-cycled reporting.
Được đề xuất
Functional Safety Appliance Control
The PIC16F18854-I/SS is a strong fit for IEC 60730 Class B and IEC 61508 SIL-1 appliance and white-goods designs because the integrated CRC/SCAN, Hardware Limit Timer (HLT), and Windowed Watchdog Timer (WWDT) provide the deterministic self-test and watchdog coverage required by safety standards. The internal 32 MHz oscillator eliminates the external crystal as a single point of failure. The Configuration Words lock unused peripherals to prevent firmware from disabling safety blocks. With 7 KB Flash, the part can host a small safety state machine alongside the main appliance control loop, reducing BOM compared to a two-MCU solution.
Được đề xuất
Small Consumer Appliance & Toy Electronics
The PIC16F18854-I/SS is a cost-effective controller for small consumer appliances (coffee makers, blenders, fans) and toy electronics, where 7 KB Flash and the CIP architecture replace external logic and timers. The CWG and NCO generate motor-control PWM and audio tones in hardware, while the 12-bit ADC reads potentiometers and NTC sensors. The 1.8 V to 5.5 V operating range supports both 2xAA and USB-powered designs. The 28-SSOP package is easy to hand-solder and rework in low-volume SKUs, and Microchip's MPLAB X ecosystem (XC8 compiler, Code Configurator) shortens the design cycle.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18854-I/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-I/SS | PIC16F18854-I/SP | PIC16F18854-I/MM | PIC16F18854-E/SS | PIC16F18876-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP family (PDIP body) | 28-SSOP family (QFN body) | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range | PIC16 8-bit enhanced mid-range |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 7 KB | 14 KB (+100%) | 7 KB (same die) | 7 KB (same die) | 7 KB (same die) | 28 KB (+300%) |
| SRAM | 512 B | 1 KB (+100%) | 512 B (same die) | 512 B (same die) | 512 B (same die) | 2 KB (+300%) |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| I/O Pins | 25 | 36 | 25 | 25 | 25 | 25 |
| ADC | 12-bit, 18 channels | 12-bit, 28 channels | 12-bit, 18 channels | 12-bit, 18 channels | 12-bit, 18 channels | 12-bit, 18 channels |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C |
Bảo phân biệt quan trọng
- Larger Flash and I/O than PIC16F1824-I/ST (vsPIC16F1824-I/ST)
- Integrated Functional Safety (FuSa) peripherals (vsPIC16F1829T-I/SO)
- Same die in 28-SSOP, 28-DIP, and 28-QFN (vsPIC16F18854-I/MM)
Ghi chú thiết kế
Estimated: at Vdd = 3.3 V and 32 MHz active, the PIC16F18854 draws approximately 2-3 mA typical; in XLP sleep with RTC running it drops to ~30 nA per the datasheet. For battery-life modeling, assume duty-cycled active time of <1% and average current of <5 uA over 10-minute reporting intervals. Add a 100 nF decoupling cap as close as possible to Vdd (pin 11) and a 10 uF bulk cap on the rail. Use the internal 32 MHz HFINTOSC for cost-down unless the application requires a precision UART baud rate (then enable the 31 kHz LFINTOSC plus PLL).
Critical: never leave MCLR floating. MCLR is the active-low reset pin (RB5 on 28-SSOP per datasheet pinout) and must be tied to Vdd through a 10 kohm pull-up resistor. A floating MCLR causes random resets, especially in noisy industrial environments. Also lock the Configuration Words (CONFIG1-5) in the hex file before production to disable unused peripherals and prevent firmware from disabling the WWDT or CRC/SCAN safety blocks. Always allocate the WWDT with a window smaller than the application worst-case loop time to detect runaway code.
The 28-SSOP package has a thermal resistance (theta_JA) of approximately 80 C/W in still air, which is acceptable for typical MCU workloads under 50 mW. For continuous ADC sampling or sustained 32 MHz operation in an enclosed housing, verify junction temperature rise using the manufacturer datasheet thermal table. The CIP architecture lets you run the ADC and CWG peripherals while the CPU sleeps, keeping the average junction temperature well within the 125 C maximum.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page. AEC-Q100 not applicable (consumer/industrial MCU, not automotive-grade). REACH compliance per Microchip product statement. Halogen-free status not explicitly stated in the provided data - left as 'unknown'.
