PIC16F18445-E/SS - 14KB Flash 8-bit MCU 32MHz SSOP-20 | Microchip
MPN: PIC16F18445-E/SS ✓ Hoạt độngPIC16F18445-E/SS Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data-path CPU, integrating program memory (FLASH/ROM), data memory (SRAM), EEPROM, and a mix of analog/digital peripherals. Within the broader taxonomy, an MCU belongs to microcontrollers -> integrated circuits -> semiconductors. The PIC16F18445 is engineered for general-purpose and low-power applications where deterministic interrupt response, peripheral integration and long battery life are mandatory.
Key differentiating features include 14 KB self-programmable FLASH, 256 bytes of EEPROM, 1 KB SRAM, a 12-bit ADC with Computation (ADCC), a 5-bit DAC, two comparators with 5-bit DAC reference, two PWM modules with Complementary Waveform Generator (CWG), an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART) and SPI/I2C. The CIPs architecture lets the peripherals (PWM, CWG, ADC, comparators, timers) operate without CPU intervention, freeing the core for low-power sleep.
The PIC16F18445-E/SS uses Microchip's enhanced mid-range 16-bit instruction set with a 49-instruction opcode set, an 8-level hardware stack, and internal oscillator selectable from 32 kHz to 32 MHz. Functional Safety (FuSa) variants exist for safety-critical applications. The 'E' temperature grade denotes -40C to +125C industrial operating range.
Typical applications include IoT sensor nodes, battery-powered instrumentation, low-power wireless modules, consumer white goods, automotive body controllers and LED lighting control. The 20-pin SSOP footprint simplifies hand-prototyping while still supporting 18 I/O lines. Compact 8-bit microcontrollers like the PIC16F18445 are widely chosen when cost, power efficiency and predictable real-time behaviour dominate design priorities.
When designing with this part, place a 0.1 uF decoupling capacitor within 3 mm of the VDD pin and a bulk capacitor on the AVDD analog rail if used. The internal oscillator is factory calibrated to +/-2% across voltage and temperature, eliminating an external crystal in most general-purpose designs. For RF-sensitive or USB-class timing accuracy, route an external 32.768 kHz crystal to the SOSC pins instead.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, so procurement and embedded engineers can compare the PIC16F18445 against pin-compatible PIC16F184xx family members and competing 8-bit MCUs in a single view.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18445-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 PIC16F18445-E/SS (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, Program Memory (Flash), Core Architecture.
PIC16F18444-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18346-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18345-E/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1827-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1829-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1826-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18445-E/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 8-bit Enhanced Mid-Range |
| Program Memory (FLASH) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Instruction Set Width | 14-bit (49 instructions) |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 12-bit ADCC (Analog-to-Digital Converter with Computation) |
| DAC | 5-bit DAC |
| Comparators | 2 |
| PWM Channels | 2 (with CWG) |
| Timers | 11 (8/16-bit selectable) |
| Communication | 1x EUSART, 2x MSSP (SPI/I2C) |
| Watchdog Timer | WWDT (Windowed) |
| Hộp | 20-pin SSOP (0.209 inch / 5.30 mm body width) |
| Nhiệt độ hoạt động | -40 C to +125 C (E = industrial grade) |
| Technology | XLP eXtreme Low-Power CMOS |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F18445-E/SS
| Chân 1 | VDD — Positive power supply |
| Chân 2 | RA5 — Bidirectional I/O / analog input |
| Chân 3 | RA4 — Bidirectional I/O |
| Chân 4 | RA3/MCLR — Bidirectional I/O / Master Clear (reset) |
| Chân 5 | RA2 — Bidirectional I/O / analog input |
| Chân 6 | RA1 — Bidirectional I/O / analog input |
| Chân 7 | RA0 — Bidirectional I/O / analog input |
| Chân 8 | RC0 — Bidirectional I/O / analog input |
| Chân 9 | RC1 — Bidirectional I/O / analog input |
| Chân 10 | RC2 — Bidirectional I/O / analog input |
| Chân 11 | RC3 — Bidirectional I/O / analog input |
| Chân 12 | RC4 — Bidirectional I/O / analog input |
| Chân 13 | RC5 — Bidirectional I/O / analog input |
| Chân 14 | RC6 — Bidirectional I/O / TX/CK (EUSART) |
| Chân 15 | RC7 — Bidirectional I/O / RX/DT (EUSART) |
| Chân 16 | RB7 — Bidirectional I/O / ICSPCLK |
| Chân 17 | RB6 — Bidirectional I/O / ICSPDAT |
| Chân 18 | RB5 — Bidirectional I/O / analog input |
| Chân 19 | RB4 — Bidirectional I/O / analog input |
| Chân 20 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC16F18445-E/SS phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, Industrial Sensor Transmitter (4-20 mA / 0-10 V), Consumer White Goods Control Board, Automotive Body Electronics (Lighting / Wipers), Smart LED Lighting and Signage Controller, Portable Medical and Wellness Devices.
Battery-Powered IoT Sensor Node
The PIC16F18445-E/SS suits battery-powered IoT sensor nodes because its XLP architecture draws roughly 50 uA/MHz active and sub-50 nA in sleep with RTCC running, extending coin-cell life into multi-year ranges. Its 12-bit ADCC samples analog sensors (temperature, light, soil moisture) at up to 300 ksps while hardware accumulation averages multiple conversions without waking the CPU. The EUSART handles UART-linked radios like LoRa or Sub-GHz transceivers; MSSP drives I2C/SPI sensors directly. Operating from 1.8-5.5 V makes the device compatible with single-cell Li-Ion, 2xAA alkaline, or energy-harvested supplies, and the 32 MHz HFINTOSC eliminates an external crystal, shrinking BOM cost and PCB area.
Được đề xuất
Industrial Sensor Transmitter (4-20 mA / 0-10 V)
The PIC16F18445-E/SS fits industrial 4-20 mA / 0-10 V transmitters because its 12-bit ADCC with hardware averaging produces stable, low-noise measurements from bridge and RTD sensors. The 5-bit DAC and 32 MHz core implement linearization and PID compensation, while the 1.8-5.5 V range supports both 3.3 V logic and 5 V analog signal chains. The 20-pin SSOP footprint is mechanically robust for industrial enclosures, and the -40 C to +125 C operating range meets IEC 60068 environmental stress. The XLP sleep modes keep total module power below 5 mW for loop-powered 4-20 mA designs, and the integrated EUSART supports HART or Modbus RTU communication.
Được đề xuất
Consumer White Goods Control Board
The PIC16F18445-E/SS is ideal for white-goods control boards (washing machines, dishwashers, microwave ovens) where the 12-bit ADCC reads temperature probes, water level sensors and motor current. Its two PWMs with Complementary Waveform Generator (CWG) drive induction-cooktop and motor-control power stages directly, while hardware comparators implement overcurrent protection without CPU intervention. With 14 KB FLASH it absorbs entire state-machine control programs, and the SSOP-20 footprint fits compact appliance PCAs. The device operates from 1.8-5.5 V, accommodating 5 V motor drivers and 3.3 V digital logic on the same board. CIPs peripherals shorten development cycles for appliance engineers.
Được đề xuất
Automotive Body Electronics (Lighting / Wipers)
The PIC16F18445-E/SS handles automotive body modules such as interior lighting, wiper controllers and seat-position drivers because its -40 C to +125 C industrial grade survives under-dash thermal stress. The 32 MHz core and CWG deliver flicker-free PWM dimming at 20 kHz above the audible band. The 12-bit ADCC monitors current-sense shunts for short-circuit detection, while the integrated EUSART supports LIN bus stacks commonly used in body control networks. Operating from 1.8-5.5 V lets the device tolerate crank-drop events down to 4.5 V on a 12 V battery rail, and the SSOP-20 footprint simplifies hand-rework for service technicians. PIC16F184xx devices are widely used for AEC-Q100 style applications when Q-grade variants are selected.
Được đề xuất
Smart LED Lighting and Signage Controller
The PIC16F18445-E/SS fits smart LED lighting controllers because its two PWMs with CWG and 32 MHz clock produce smooth high-frequency dimming free of audible noise, while the 5-bit DAC and comparators generate constant-current analog loops for LED strings. The MSSP ports drive SPI daisy-chain addressable LEDs (WS2812 / APA102) without external glue logic. Operating from 1.8-5.5 V supports both 3.3 V digital logic and 5 V analog dimming, and the XLP sleep current below 50 nA makes the device attractive for battery-backup emergency luminaires. The 14 KB FLASH supports DMX-512 / DALI protocol stacks, easing integration into architectural lighting fixtures.
Được đề xuất
Portable Medical and Wellness Devices
The PIC16F18445-E/SS suits portable medical and wellness devices such as pulse oximeters, blood-pressure cuffs and connected thermometers because its XLP low-power technology keeps continuous-monitoring devices running on small Li-Ion batteries for weeks. The 12-bit ADCC samples photoplethysmography (PPG) and temperature signals with hardware averaging, while the integrated DAC drives bias currents for analog front-ends. Functional Safety (FuSa) variants of the PIC16F18445 family are available for safety-critical medical applications per IEC 60730. The device's 14 KB FLASH supports algorithm storage for heart-rate calculation, and the EUSART links to Bluetooth / BLE modules for smartphone connectivity. The SSOP-20 footprint supports compact wearable form factors.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18445-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 | PIC16F18444-E/SO | PIC16F18346-E/SS | PIC16F18345-E/SS | PIC16F1827-E/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SOIC | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Core Architecture | 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 Enhanced Mid-Range (older CIP) |
| FLASH Program Memory | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB |
| Data SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 384 B |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADC | 10-bit ADC |
| EUSART | Yes | No | Yes | Yes | No (EUSART not present) |
| 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 |
Bảo phân biệt quan trọng
- Doubles FLASH over the legacy PIC16F1827 family (vsPIC16F1827-E/SS)
- Adds EUSART for asynchronous/RS-485 communication (vsPIC16F18444-E/SO)
- 12-bit ADCC with hardware averaging (vsPIC16F18345-E/SS)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor within 3 mm of the VDD pin (pin 1) and a bulk 1-10 uF electrolytic/tantalum on the same VDD trace. The PIC16F18445-E/SS has separate analog (AVDD/AVSS) and digital supplies on larger variants; on the SSOP-20 they share the same pins. According to the PIC16F184xx datasheet, AVDD must be tied to VDD if the ADC is unused. A series ferrite bead between digital and analog rails reduces ADC noise coupling in mixed-signal designs.
Route the ICSP clock and data lines (RB6/ICSPDAT, RB7/ICSPCLK) directly to a 2x3 or 1x6 header with series 100 ohm termination near the connector to keep debug/programming reliable. The internal HFINTOSC is factory calibrated to +/-2% across voltage and temperature, so an external crystal is not required for general-purpose designs; if USB or RF timing is needed, add a 32.768 kHz crystal to the SOSC pins (RA4/RA5) for RTC reference. Keep RC6/RC7 (EUSART TX/RX) traces short and impedance-matched when driving long cables.
Avoid the common pitfall of leaving RA3/MCLR floating - on the PIC16F18445-E/SS this pin defaults to MCLR mode and must be tied to VDD through a 10 kohm pull-up resistor, or used as a reset input. Confirmed in the PIC16F184xx datasheet: disabling MCLR requires the MCLRE configuration bit to be cleared. Also note that pin 1 is VDD (not VSS as on some legacy 20-pin PICs); reversing supply polarity on SSOP-20 may destroy the device.
Thông tin tuân thủ
RoHS compliant per Microchip product page. -E temperature grade denotes industrial -40C to +125C range; AEC-Q100 qualification requires selection of automotive-grade PIC16F18445 variants (not in the SSOP-20 -E/SS suffix).
