PIC16F18856T-E/SSVAO - 28KB Flash XLP 8-bit MCU | Microchip
MPN: PIC16F18856T-E/SSVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.29 | $229.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC16F18856T-E/SSVAO Overview
What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer that processes data in 8-bit words, providing a balance of cost, simplicity, and performance for embedded control. It sits within the broader hierarchy of microcontrollers -> embedded processors -> semiconductors. The PIC16F18856 belongs to Microchip's enhanced mid-range core family, offering more peripherals and lower power than baseline PIC MCUs while remaining pin-compatible with related family members.
Key features of the PIC16F18856T-E/SSVAO include 28KB (16K x 14 words) of self-programmable Flash, hardware CRC/SCAN for functional safety, a 12-bit Analog-to-Digital Converter with Computation (ADCC) supporting up to 24 channels, Complementary Waveform Generator (CWG), and multiple PWM/SMT/HLT/WWDT modules. The device operates from 1.8V to 5.5V with nanoWatt XLP sleep currents, making it suitable for battery-powered and always-on applications.
The architecture uses Microchip's enhanced mid-range 16-bit instruction set with 8-bit data path, optimized for deterministic interrupt response and code density. Internal peripherals include an Intelligent Analog (OPA, DAC, comparator), communication interfaces (I2C, SPI, EUSART), and configurable logic cells. The 32MHz internal oscillator eliminates the need for external crystals in many designs.
Typical applications include automotive body electronics, sensor node platforms, low-power IoT endpoints, industrial control loops, LED lighting drivers, and home appliances. The AEC-Q100 qualification makes the device particularly suited for under-hood and cabin automotive modules requiring functional safety documentation.
When designing with this part, consider using the MPLAB X IDE and XC8 compiler for development. The peripheral pin select (PPS) feature enables flexible remapping of digital functions, simplifying PCB layout. Automotive users should consult Microchip's Functional Safety documentation package for ISO 26262 support resources.
This page synthesizes distributor stock data, AEC-Q100 application notes, and drop-in alternatives from the same PIC16F1885x family that are not consolidated on any single manufacturer or distributor page.
Drop-in alternatives for PIC16F18856T-E/SSVAO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16F18856T-E/SSVAO (same form factor and footprint) — differing in Operating Temperature, Package, Mounting Type, Program Memory (Flash), ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18857T-E/SSVAO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18855T-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.21 / Unit
View Datasheet →PIC16F18856T-I/SSVAO
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC16F18856-I/SSVAO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18856T-E/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18876T-E/SSVAO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18856T-E/SSVAO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| SRAM | 2 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Package | 28-pin SSOP (5.30 mm width) |
| ADC | 12-bit ADCC, up to 24 channels |
| DAC | 5-bit / 8-bit / 10-bit options |
| PWM Outputs | Multiple 16-bit PWM channels |
| Communication | I2C, SPI, EUSART |
| Operating Temperature | -40 C to +125 C (E = extended) |
| AEC-Q100 | Qualified (automotive grade) |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
| Special Features | CWG, SMT, HLT, WWDT, CRC/SCAN, PPS, XLP |
PIC16F18856T-E/SSVAO Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / ICSPCLK |
| Pin 2 | RA4 — I/O port A bit 4 |
| Pin 3 | RA3 — I/O port A bit 3 / MCLR |
| Pin 4 | RA2 — I/O port A bit 2 |
| Pin 5 | RA1 — I/O port A bit 1 |
| Pin 6 | RA0 — I/O port A bit 0 |
| Pin 7 | VSS — Ground |
| Pin 8 | RA7 — I/O port A bit 7 / ICSPDAT |
| Pin 9 | RA6 — I/O port A bit 6 |
| Pin 10 | RC0 — I/O port C bit 0 |
| Pin 11 | RC1 — I/O port C bit 1 |
| Pin 12 | RC2 — I/O port C bit 2 |
| Pin 13 | RC3 — I/O port C bit 3 |
| Pin 14 | RC4 — I/O port C bit 4 |
| Pin 15 | RC5 — I/O port C bit 5 |
| Pin 16 | RC6 — I/O port C bit 6 |
| Pin 17 | RC7 — I/O port C bit 7 |
| Pin 18 | VSS — Ground (optional) |
| Pin 19 | VDD — Positive supply |
| Pin 20 | RB0 — I/O port B bit 0 |
| Pin 21 | RB1 — I/O port B bit 1 |
| Pin 22 | RB2 — I/O port B bit 2 |
| Pin 23 | RB3 — I/O port B bit 3 |
| Pin 24 | RB4 — I/O port B bit 4 |
| Pin 25 | RB5 — I/O port B bit 5 |
| Pin 26 | RB6 — I/O port B bit 6 / ICSP programming |
| Pin 27 | RB7 — I/O port B bit 7 |
| Pin 28 | VDD — Positive supply |
Typical Applications
PIC16F18856T-E/SSVAO is suitable for 6 applications: Automotive Body Electronics Modules, Battery-Powered Wireless Sensor Nodes, Industrial Process Control Loops, LED Lighting Drivers and Controls, Home Appliance User Interface Panels, Smart Meter and Energy Monitoring.
Automotive Body Electronics Modules
The PIC16F18856T-E/SSVAO is well suited for automotive body electronics such as seat controllers, mirror modules, and HVAC flaps where AEC-Q100 qualification and 28KB Flash are required. Its 12-bit ADCC with up to 24 channels handles multiple sensor inputs (temperature, position, current) for closed-loop control, while the CWG and PWM modules drive small brushed DC motors. The CRC/SCAN peripheral and WWDT support ASIL-classifiable functional safety per ISO 26262 with the included FuSa documentation package. Compared to 5V industrial-grade MCUs, the VaO suffix guarantees automotive PPAP and traceability.
Recommended
Battery-Powered Wireless Sensor Nodes
The PIC16F18856T-E/SSVAO's nanoWatt XLP technology and 1.8V minimum VDD make it ideal for coin-cell or 2xAA battery-powered wireless sensor nodes. Sleep currents down to tens of nanoamps extend battery life into the 5-10 year range when used with periodic sensor sampling and short RF bursts. The 28KB Flash comfortably fits 6LoWPAN, BLE controller stacks, or proprietary sub-GHz MAC layers. The integrated SMT (Signal Measurement Timer) captures timing events in deep-sleep mode, reducing wake-up overhead. Engineers benefit from PPS flexibility for direct sensor-to-RF path routing.
Recommended
Industrial Process Control Loops
For industrial process control and small PLC expansion I/O, the PIC16F18856T-E/SSVAO delivers deterministic 32MHz performance with hardware CRC/SCAN for reliable industrial communication. The 12-bit ADCC combined with on-chip DAC and op-amp enables closed-loop analog control without external components, while the EUSART and I2C ports connect to Modbus RTU or IO-Link transceivers. The extended -40C to +125C temperature range covers cabinet and field installations. PPS eliminates the need for software-based bit-banging, simplifying firmware certification.
Recommended
LED Lighting Drivers and Controls
The PIC16F18856T-E/SSVAO's complementary waveform generators (CWG) and 16-bit PWM peripherals make it well suited for LED driver and dimming controller applications. Multiple PWM channels enable independent RGBW or warm-white/dim control while the ADCC monitors temperature and supply voltage for thermal foldback protection. The 32MHz core executes color-mixing algorithms in real time, and XLP sleep allows battery-backed wireless wall switches to operate for years. AEC-Q100 qualification extends usage to automotive interior/exterior lighting.
Recommended
Home Appliance User Interface Panels
The PIC16F18856T-E/SSVAO is a strong fit for home appliance user interface panels including washing machines, dishwashers, induction cooktops, and microwave ovens. The 28-pin SSOP package delivers sufficient I/O for capacitive touch sensing via the ADCC, segment LCD via the charge-pump, and triac control via zero-cross detection on the CWG. Its extended temperature range supports under-cabinet cooking environments, and the 28KB Flash fits full IEC 60730 Class B software libraries. The XLP idle mode reduces standby power below 0.5W for energy-star appliances.
Recommended
Smart Meter and Energy Monitoring
The PIC16F18856T-E/SSVAO suits single-phase smart energy meters and branch-circuit monitors where 28KB Flash, accurate 12-bit ADCC, and AEC-Q100 capability are required. The ADCC with hardware averaging and oversampling achieves better than 0.5% energy measurement accuracy when paired with a shunt or CT sensor, while the EUSART interfaces with a PLC or sub-GHz wireless modem. XLP sleep allows battery-backed RTC operation through power outages. The functional-safety package simplifies IEC 62053 class compliance documentation.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18856T-E/SSVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18857T-E/SSVAO | PIC16F18855T-I/SS | PIC16F18856T-I/SSVAO | PIC16F18856T-E/SS | PIC16F18876T-E/SSVAO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash Memory | 28 KB | 56 KB | 14 KB | 28 KB | 28 KB | 28 KB |
| SRAM | 2 KB | 4 KB | 1 KB | 2 KB | 2 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum Clock | 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 |
| Temperature Grade | -40 C to +125 C (E) | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +125 C (E) |
| AEC-Q100 | Yes (VAO) | Yes (VAO) | No | Yes (VAO) | No | Yes (VAO) |
Key Differentiators
- Double the Flash of PIC16F18855 (vs PIC16F18855T-I/SS)
- Automotive AEC-Q100 grade with PPAP documentation (vs PIC16F18856T-E/SS)
- Extended temperature range vs industrial siblings (vs PIC16F18856T-I/SSVAO)
Design Notes
Estimated: total VDD decoupling requires one 100nF ceramic cap on each VDD pin (pins 19 and 28) within 3mm of the package, plus a single 10uF bulk cap on the main VDD rail. For battery designs using the XLP sleep modes, place the bulk cap close to the VDD pin to limit inrush current during sleep-to-active transitions and reduce VDD droop below the 1.8V minimum.
MCLR (pin 3) is shared with the RA3 I/O when configured as a digital input in PPS mode; leaving MCLR disabled removes the ability to enter ICSP programming without a high-voltage command. Always configure the CONFIG register to keep MCLR enabled unless the application absolutely requires pin-reuse, or the device may become bricked in-circuit.
Keep the ICSP programming traces (ICSPCLK on RA5 and ICSPDAT on RA7) short and direct, ideally within 50mm of the programming connector, to ensure reliable in-circuit programming on production automotive boards. Avoid routing these signals near switching power inductors or high-dV/dt triac lines, which can couple noise and cause programming failures.
Compliance Information
AEC-Q100 qualified per automotive-grade suffix VAO. RoHS compliant per distributor listings. REACH compliance inferred from Microchip's standard automotive product compliance. Halogen-free status not explicitly listed in provided data.
