PIC16F18456-E/SS - 8-bit MCU, 32MHz, 28KB Flash, 28-SSOP | Microchip
MPN: PIC16F18456-E/SS ✓ Hoạt độngPIC16F18456-E/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and programmable peripherals. The PIC16F18456 belongs to the 8-bit MCU category (8-bit CPU data path -> microcontroller -> embedded controller -> semiconductor IC), positioned for general-purpose and low-power embedded designs. The 16F184xx family specifically targets applications that combine analog signal conditioning with serial communication, replacing multi-chip discrete solutions.
Key features include a 12-bit Analog-to-Digital Converter with Computation (ADCC), a 5-bit and 8-bit Digital-to-Analog Converter (DAC), two PWMs, a Complementary Waveform Generator (CWG), a Comparator, EUSART, and two SPI/I2C interfaces. These CIPs allow hardware-based signal generation and conditioning without CPU intervention, freeing the core for application logic and reducing firmware complexity.
The PIC16F18456 uses a RISC architecture with a modified Harvard memory layout, providing deterministic interrupt response and predictable instruction timing. The XLP technology delivers deep-sleep currents below 1uA in sleep mode with retention, making it suitable for battery-powered sensor nodes. The 32MHz internal oscillator removes the need for an external crystal in most designs.
Typical applications include IoT sensor nodes, low-power wireless sensor interfaces, battery-powered home automation, industrial control, automotive body electronics, and consumer appliances. The combination of 12-bit ADC, DAC, and PWM makes it well-suited for closed-loop motor control and LED lighting. The EUSART and dual SPI/I2C enable bridging to sensor, display, or wireless modules.
When designing with this device, allocate sufficient decoupling (100nF + 1uF) close to VDD, route the ICSP programming pins to a debug header, and configure the configuration bits (FOSC, WDTE, etc.) in your project settings. The 28-SSOP package is hand-solderable for prototyping but is best assembled in volume via reflow.
This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, plus drop-in alternatives from the PIC16F184xx family and pin-compatible variants, plus practical design notes not aggregated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18456-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 PIC16F18456-E/SS (cùng hình factor và footprint) — khác nhau ở Package, DAC, ADC, Core Architecture, Operating Temperature.
PIC16F18455-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18455T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18346-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18444-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18446-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18456-E/SS Tỷ lệ tối đa & tính chất điện
| Product Family | PIC16F184xx |
| Core Architecture | 8-bit PIC RISC (modified Harvard) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data RAM | 2 KB |
| Maximum CPU Clock | 32 MHz |
| Hộp | 28-SSOP (5.30 mm body width, 0.65 mm pitch) |
| Temperature Grade | Extended (-40C to +125C) |
| ADC | 12-bit ADCC (Analog-to-Digital Converter with Computation) |
| DAC | 5-bit and 8-bit DAC |
| PWM Channels | 2 x 10-bit PWM |
| Waveform Generator | Complementary Waveform Generator (CWG) |
| Comparator | Yes |
| Communication Interfaces | EUSART, 2x SPI/I2C |
| eXtreme Low-Power (XLP) | Yes (deep-sleep < 1 uA typical) |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Trạng thái RoHS | Compliant |
| Lead-Free / Halogen-Free | Yes (per Microchip product page) |
| Programming/Debug | ICSP (In-Circuit Serial Programming), supports PICkit, ICD, Snap |
Cấu hình chân PIC16F18456-E/SS
| Chân 1 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Chân 2 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Chân 3 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Chân 4 | RA5/MCLR — Port A bit 5 / Master Clear (reset, active low) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RA7/OSC1 — Port A bit 7 / Crystal oscillator input 1 |
| Chân 7 | RA6/OSC2 — Port A bit 6 / Crystal oscillator output 2 |
| Chân 8 | RB0/INT — Port B bit 0 / External interrupt |
| Chân 9 | RB1 — Port B bit 1 |
| Chân 10 | RB2 — Port B bit 2 |
| Chân 11 | RB3 — Port B bit 3 |
| Chân 12 | |
| Chân 13 | RB5 — Port B bit 5 |
| Chân 14 | RB6/ICSPCLK — Port B bit 6 / ICSP clock |
| Chân 15 | RB7/ICSPDAT — Port B bit 7 / ICSP data |
| Chân 16 | VDD — Positive supply (1.8V-5.5V) |
| Chân 17 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 18 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 19 | RC0 — Port C bit 0 |
| Chân 20 | RC1 — Port C bit 1 |
| Chân 21 | RC2 — Port C bit 2 |
| Chân 22 | RC3 — Port C bit 3 |
| Chân 23 | RC4 — Port C bit 4 |
| Chân 24 | RC5 — Port C bit 5 |
| Chân 25 | RC6 — Port C bit 6 |
| Chân 26 | RC7 — Port C bit 7 |
| Chân 27 | VSS — Ground reference (second pin) |
| Chân 28 | VDD — Positive supply (second pin) |
Ứng dụng tiêu biểu
PIC16F18456-E/SS phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, Closed-Loop LED Lighting Controller, Automotive Body Electronics Module, Industrial Process Sensor Transmitter, Consumer Appliance Control Board, Smart Home Edge / Hub Sensor Concentrator.
Battery-Powered IoT Sensor Node
The PIC16F18456-E/SS is an excellent fit for battery-powered IoT sensor nodes because of its eXtreme Low-Power (XLP) technology delivering deep-sleep currents below 1uA while retaining RAM. The 32MHz HFINTOSC eliminates the external crystal for most sensor sampling applications, and the 12-bit ADCC with hardware oversampling directly digitizes temperature, humidity, or battery voltage with no CPU intervention. Engineers typically wake the MCU via RTCC every 1-30 seconds to take a sample and transmit over an attached SPI/I2C radio. The 28-SSOP package keeps board area under 5x8mm even with decoupling caps.
Được đề xuất
Closed-Loop LED Lighting Controller
The PIC16F18456-E/SS drives closed-loop LED lighting controllers by combining its 10-bit PWM module with the 12-bit ADCC and 8-bit DAC to implement constant-current analog dimming plus digital brightness control. The Complementary Waveform Generator (CWG) produces dead-band-controlled complementary outputs for half-bridge LED driver stages, avoiding cross-conduction without software delay loops. The CWG can also generate programmable dead time and blanking to coordinate with the ADC sample point. With 28KB Flash, complex breathing and color-mixing algorithms fit without external memory.
Được đề xuất
Automotive Body Electronics Module
The PIC16F18456-E/SS fits automotive body electronics such as lighting controllers, seat controllers, and HVAC flaps because its Extended temperature grade (-40C to +125C) survives the under-dash thermal environment and the 12-bit ADCC handles sensor conditioning with hardware averaging. The EUSART and dual SPI/I2C enable simultaneous connection to a LIN bus transceiver and to local motor-driver ICs. The 28-SSOP package accepts the same reflow profile as other SMD body-electronics components. For full automotive qualification, request the automotive Q-grade variant (PIC16F18456-E/SSVAO equivalent).
Được đề xuất
Industrial Process Sensor Transmitter
The PIC16F18456-E/SS is well-suited for 4-20mA industrial process sensor transmitters: its 12-bit ADCC with hardware oversampling supports 16-bit effective resolution for accurate pressure, level, and flow measurements, while the 5-bit and 8-bit DACs generate the precise loop current. The Extended temperature grade meets -40C to +125C harsh-environment specs. The 32MHz CPU runs PID loops at kHz rates without taxing the instruction budget. The EUSART drives RS-485 half-duplex for configuration and diagnostics.
Được đề xuất
Consumer Appliance Control Board
The PIC16F18456-E/SS powers consumer appliance control boards (coffee machines, washing machines, microwave ovens, air purifiers) by combining PWMs for motor/valve control, the 12-bit ADCC for temperature and humidity sensing, and the EUSART plus SPI/I2C for display and keypad interfaces. The 28KB Flash accommodates complex state-machine firmware plus touchscreen UI strings. The CWG produces complementary drive signals for synchronous-rectification motor stages. Cost-effective at $1.02 per 1K, it undercuts Cortex-M0 alternatives while retaining 5V tolerance on digital inputs.
Được đề xuất
Smart Home Edge / Hub Sensor Concentrator
The PIC16F18456-E/SS serves as a sensor concentrator for smart-home edge nodes, aggregating inputs from multiple I2C/SPI sensors and forwarding data over EUSART (RS-485) or a connected radio module. The dual I2C interfaces support simultaneous connections to two different sensor buses at different addresses; the EUSART provides a wired backhaul. The deep-sleep XLP mode (sub-1uA) with RTCC wake-up enables battery-backed operation for years. The 28KB Flash supports firmware-over-the-air (FOTA) staging with dual-bank A/B storage.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18456-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 | PIC16F18455-E/SS | PIC16F18455T-I/SS | PIC16F18346-E/SS | PIC16F18444-I/SO | PIC16F18446-E/SO |
|---|---|---|---|---|---|---|
| Package | 28-SSOP (5.30mm body) | 28-SSOP (5.30mm) - same | 28-SSOP (5.30mm) - same | 28-SSOP (5.30mm) - same | 28-SOIC (7.50mm) - wider | 28-SOIC (7.50mm) - wider |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 28 KB | 14 KB (-50%) | 14 KB (-50%) | 28 KB | 7 KB (-75%) | 28 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB (-50%) | 2 KB |
| Max CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC (older) | 10-bit ADC | 12-bit ADCC |
| DAC | 5-bit + 8-bit | 5-bit + 8-bit | 5-bit + 8-bit | 5-bit (no 8-bit) | 5-bit | 5-bit + 8-bit |
| Temperature Grade | Extended -40C to +125C | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C |
| CWG (Complementary Waveform Generator) | Yes | Yes | Yes | No | No | Yes |
| Unit Price @ 1000 | $1.02 | $0.92 (est.) | $0.92 (est.) | $1.05 (est.) | $0.85 (est.) | $1.00 (est.) |
Bảo phân biệt quan trọng
- 12-bit ADCC with hardware oversampling (vsPIC16F18346-E/SS)
- Complementary Waveform Generator (CWG) (vsPIC16F18444-I/SO)
- 28KB Flash with same 28-SSOP footprint (vsPIC16F18455-E/SS)
- Both 5-bit and 8-bit DAC modules (vsPIC16F18444-I/SO)
Ghi chú thiết kế
Place a 100nF (0.1uF) decoupling capacitor as close as possible to each VDD pin (pin 16 and pin 28) and a bulk 1uF-10uF tantalum or ceramic capacitor on the same VDD net. For battery-powered designs using the deep-sleep XLP mode, route the decoupling cap ground return directly to the VSS pin to minimize leakage paths. The PIC16F18456's POR/BOR circuit will hold reset until VDD reaches the BOR threshold (typically 1.8V); add a 10k pull-up on MCLR (pin 4) for stable reset behavior.
For the 28-SSOP package (0.65mm pitch), use 0.40mm-wide copper pads with 0.20mm solder-mask expansion to ensure reliable reflow. Route ICSP signals (PGC/PGD) directly to a 6-pin 0.1-inch header or edge finger, keeping traces under 50mm and adding 4.7k pull-up resistors on PGD per Microchip ICSP recommendations. The RA6/OSC2 and RA7/OSC1 pins can be reassigned as GPIO if the internal HFINTOSC is used - configure FOSC configuration bits accordingly.
Estimated: when migrating firmware from PIC16F18346-E/SS to PIC16F18456-E/SS, the ADC module registers moved from ADC to ADCC; legacy SFR bit names such as ADCON0/ADCON1 are now ADCCON0/ADCCON1 with new computation-mode bits. Re-read the datasheet's ADCC chapter rather than copying 18346 register maps. Also note that the 12-bit ADCC supports hardware oversampling only on specific channels - verify channel mapping in the datasheet's IO_MAP table.
The PIC16F18456-E/SS in 28-SSOP at 32MHz and 5V supply draws approximately 5-7mA active. At deep-sleep, the XLP core drops to sub-1uA, enabling years of operation from a CR2032 coin cell. For high-temperature (105C+) industrial environments, derate the CPU clock by selecting a lower HFINTOSC frequency or use the LFINTOSC at 31kHz to reduce self-heating. The thermal resistance theta_JA of the 28-SSOP is approximately 100C/W.
When using the 12-bit ADCC, keep analog traces (ANx inputs on PORTA) away from digital switching lines; cross only at right angles if necessary. Add a small RC filter (10-100 ohm + 100pF) on analog inputs to limit bandwidth to the Nyquist rate of the sampling clock. Enable the ADCC's hardware oversampling mode for sensor signals to improve SNR by 4x (effective 14-bit). Use the dedicated AVdd rail pin when present, or route VDD with a ferrite bead to isolate analog supply noise.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. The -E temperature grade is extended-industrial; for AEC-Q100 automotive qualification, request the automotive VAO-suffix variant. Halogen-free packaging confirmed in Microchip MDDS.
