PIC16F18445-E/SSVAO - 14KB Flash 8-bit MCU AEC-Q100 | Microchip
MPN: PIC16F18445-E/SSVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.89 | $189.00 |
| 500 | $1.65 | $825.00 |
| 1,000 | $1.42 | $1,420.00 |
PIC16F18445-E/SSVAO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (SRAM), EEPROM for parameter storage, and a rich set of on-chip peripherals. The PIC16F18445 belongs to the mid-range PIC16 architecture, which sits within Microchip's broader 8-bit PIC portfolio (PIC10/12/14/16/18) and is widely used in cost-sensitive embedded applications where deterministic real-time response, low power, and compact code density are priorities.
Key differentiating specifications include Core Independent Peripherals (CIPs) such as the CWG, which can generate complementary PWM outputs with dead-band control for half-bridge drivers without CPU intervention. The 12-bit ADCC performs automated averaging, filtering, threshold comparison, and oversampling in hardware, freeing the CPU for application logic. eXtreme Low-Power (XLP) technology delivers nanoWatt sleep currents suitable for battery-powered and always-on applications.
Typical applications include automotive body and lighting controls, sensor conditioning nodes, HMI sub-systems, low-power IoT end nodes, and industrial sensor interfaces. The extended temperature grade and AEC-Q100 qualification make the /VAO variant particularly suited to under-hood and cabin automotive deployments. Companion parts such as the MCP2517FD CAN-FD controller or MCP2557FD transceiver are commonly paired with this MCU to build complete in-vehicle networking nodes.
When designing with this device, pay attention to the SSOP-20 thermal dissipation limit at high ambient temperatures, ensure the ICSP programming pins (ICSPCLK/ICSPDAT) are accessible, and use MPLAB X IDE with XC8 compiler for code development. A 100 nF decoupling capacitor placed within 5 mm of VDD is recommended to suppress switching transients from the digital I/O ring.
Drop-in alternatives for PIC16F18445-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 PIC16F18445-E/SSVAO (same form factor and footprint) — differing in ADC, Operating Temperature, Package, PWM Channels, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18445-E/SS
✅ Drop-In✓ In Stock
$0.88 / Unit
View Datasheet →PIC16F18346-E/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18345-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18346-E/SSVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18444T-I/SO
✅ Drop-In✓ In Stock
$0.55 / Unit
View Datasheet →PIC16F18445-E/SSVAO Maximum Ratings & Electrical Characteristics
| Product Family | PIC16F184xx |
| CPU Core | PIC16 8-bit RISC |
| Program Memory (Flash) | 14 KB |
| Data SRAM | 1 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit ADCC (Computation) |
| DAC | 5-bit DAC |
| Comparators | 2 |
| PWM Channels | 2 |
| Communication | EUSART, SPI, I2C |
| Package | SSOP-20 (automotive /VAO) |
| Operating Temperature | -40C to +125C (extended) |
| AEC-Q100 Qualification | Qualified (automotive /VAO suffix) |
PIC16F18445-E/SSVAO Pin Configuration
| Pin 1 | RA0 — Bidirectional I/O / analog input / DAC output |
| Pin 2 | RA1 — Bidirectional I/O / analog input / DAC reference |
| Pin 3 | RA2 — Bidirectional I/O / analog input |
| Pin 4 | RA3 — Bidirectional I/O / analog input / VREF+ |
| Pin 5 | RA4 — Bidirectional I/O / analog input |
| Pin 6 | RA5 — Bidirectional I/O / analog input |
| Pin 7 | VDD — Positive power supply |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RB4 — Bidirectional I/O / ADC input |
| Pin 10 | RB5 — Bidirectional I/O / ADC input |
| Pin 11 | RB6 — Bidirectional I/O / ICSPCLK (programming clock) |
| Pin 12 | RB7 — Bidirectional I/O / ICSPDAT (programming data) |
| Pin 13 | RC0 — Bidirectional I/O / analog input |
| Pin 14 | RC1 — Bidirectional I/O / analog input |
| Pin 15 | RC2 — Bidirectional I/O / analog input |
| Pin 16 | RC3 — Bidirectional I/O / analog input / SCL (I2C) |
| Pin 17 | RC4 — Bidirectional I/O / SDA (I2C) |
| Pin 18 | RC5 — Bidirectional I/O |
| Pin 19 | RC6 — Bidirectional I/O / TX (EUSART) |
| Pin 20 | RC7 — Bidirectional I/O / RX (EUSART) |
Typical Applications
PIC16F18445-E/SSVAO is suitable for 6 applications: Automotive Body Control Module, Automotive LED Lighting Driver, Battery-Powered IoT Sensor Node, Industrial Sensor Conditioning Hub, HMI Keypad and Rotary Encoder Interface, Automotive Window Lift / Seat Control.
Automotive Body Control Module
The PIC16F18445-E/SSVAO's AEC-Q100 qualification and -40C to +125C extended temperature range make it well-suited for automotive body control nodes driving lighting, mirror, and accessory loads. Its 14 KB Flash fits body-control firmware including LIN slave stacks and PWM dimming routines, while the two 12-bit ADCC channels read analog sensor inputs such as potentiometers or thermistors. The Complementary Waveform Generator (CWG) with dead-band control directly drives half-bridge MOSFET gates for seat or window control without software overhead. Two comparators enable hardware-based current-limit protection on driver outputs. Use the on-chip EUSART to connect an external LIN transceiver (e.g., MCP2004) for in-vehicle networking. The SSOP-20 package suits the compact automotive PCBA form factor common behind dashboard panels.
Recommended
Automotive LED Lighting Driver
The PIC16F18445-E/SSVAO is well-matched to drive automotive interior and exterior LED loads where AEC-Q100 compliance is mandatory. Its 12-bit ADCC performs hardware-averaged current sensing across multiple LEDs, while the 5-bit DAC sets the dimming reference for closed-loop constant-current regulation. Two PWM outputs (with CWG) generate phase-shifted PWM at up to 32 MHz instruction rate, enabling smooth 16-bit PWM dimming at frequencies above the audible band to eliminate driver whine. The 14 KB Flash comfortably fits IEC 61267-compliant dimming curves and color-mixing tables for RGB ambient lighting. The extended -40C to +125C range tolerates under-hood and headlamp PCB temperatures. Designers pair this MCU with discrete MOSFET gate drivers such as the MCP14A0901 to switch higher-current LED strings.
Recommended
Battery-Powered IoT Sensor Node
The PIC16F18445-E/SSVAO's nanoWatt XLP technology enables years of battery life in IoT sensor nodes. Sleep currents below 50 nA (per Microchip PIC16F184xx datasheet) make this device suitable for wireless HVAC transmitters, leak detectors, or remote environmental sensors transmitting on SPI-connected radios. The 12-bit ADCC with hardware averaging and oversampling delivers high-resolution sensor measurements while the CPU remains in sleep, waking only on ADC threshold-match interrupts. The 256-byte EEPROM stores calibration and node-identity data without burning Flash endurance. The wide 1.8-5.5 V VDD range accepts direct connection to 3.3 V or 2x AA battery stacks. Pair with a sub-GHz transceiver like the MRF89XA or a LoRa module over SPI for long-range wireless sensor telemetry.
Recommended
Industrial Sensor Conditioning Hub
The PIC16F18445-E/SSVAO is appropriate for industrial 4-20 mA or 0-10 V sensor-conditioning hubs where its 12-bit ADCC and 5-bit DAC provide analog front-end functionality in a single chip. The Computation engine performs hardware filtering and threshold detection, reducing CPU loading for multi-channel thermocouple or strain-gauge measurements. Two comparators generate fast hardware trips independent of software latency, critical for safety shutoffs on over-temperature or over-pressure conditions. The EUSART and I2C peripherals support Modbus RTU or IO-Link sensor protocols via external transceivers. The SSOP-20 package is widely accepted on industrial control PCBs that must fit within 25 mm wide DIN-rail housings.
Recommended
HMI Keypad and Rotary Encoder Interface
Human-machine interface (HMI) modules in automotive and industrial equipment use the PIC16F18445-E/SSVAO to scan matrix keypads, decode rotary encoders, and drive indicator LEDs. Its 14 KB Flash fits keypad debounce state machines and QMK-style keymaps, while the CWG generates complementary PWM signals for backlight brightness without software jitter. The 12-bit ADCC reads up to 11 analog channels for capacitive-touch electrodes or rotary potentiometers, with hardware threshold comparison to detect touch events without polling. The PIC16F18445-E/SSVAO's SSOP-20 footprint supports slim control-panel PCBAs where Z-height must remain under 8 mm. The on-chip EUSART serves diagnostic logs to a host controller during production test.
Recommended
Automotive Window Lift / Seat Control
Power-window and seat-position controllers in cars benefit from the PIC16F18445-E/SSVAO's CWG with dead-band control and two comparators for current-limit detection on H-bridge drivers. The 14 KB Flash stores anti-pinch algorithms and learned end-stop positions, while the 256-byte EEPROM persists seat-memory presets across battery disconnects. The AEC-Q100 /VAO grade satisfies OEM automotive validation requirements, and the extended -40C to +125C range covers door-module and under-seat thermal environments. The 32 MHz instruction rate handles quadrature decoding on seat-position encoders in real time without interrupt overhead. Pair with an automotive-grade H-bridge driver such as the MCP8024 to complete the drive electronics.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18445-E/SSVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18445-E/SS | PIC16F18346-E/SS | PIC16F18345-E/SS | PIC16F18346-E/SSVAO |
|---|---|---|---|---|---|
| Package | SSOP-20 (automotive /VAO) | SSOP-20 (industrial) | SSOP-20 (industrial) | SSOP-20 (industrial) | SSOP-20 (automotive /VAO) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 14 KB | 14 KB (same) | 28 KB (+100%) | 14 KB (same) | 28 KB (+100%) |
| Data SRAM | 1 KB | 1 KB | 2 KB | 1 KB | 2 KB |
| AEC-Q100 Automotive Grade | Yes (/VAO) | No | No | No | Yes (/VAO) |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| ADC Type | 12-bit ADCC (Computation) | 12-bit ADCC | 12-bit ADCC | 10-bit ADC (older) | 12-bit ADCC |
| Complementary Waveform Generator (CWG) | Yes | Yes | Yes | No | Yes |
| Unit Price (qty 1, as of 2026-09-20) | $2.45 | ~$1.85 (industrial lower) | ~$2.10 | ~$1.75 | ~$2.85 |
Key Differentiators
- AEC-Q100 automotive grade with extended -40C to +125C temperature range (vs PIC16F18445-E/SS (industrial grade))
- Newer 12-bit ADCC with hardware computation engine (vs PIC16F18345-E/SS)
- Complementary Waveform Generator (CWG) with dead-band control (vs PIC16F18345-E/SS)
- Lower price point at 14 KB Flash tier with newer peripherals (vs PIC16F18346-E/SSVAO)
Design Notes
The SSOP-20 package has a junction-to-ambient thermal resistance of approximately 100 C/W (per Microchip packaging guidelines). At automotive-grade ambient temperatures of +85C and 100 MHz-equivalent switching activity, the resulting self-heating is roughly 5-10C, leaving adequate margin to the +125C maximum junction. Designers must still verify worst-case dissipation in fully-loaded IO toggle patterns; reducing clock speed or peripheral enable states can lower die temperature when needed.
Place a 100 nF (0.1 uF) decoupling capacitor within 5 mm of the VDD pin (pin 7) with a short, wide ground trace to pin 8 (VSS). For ADC accuracy, add a 10 uF bulk capacitor near the VDD/VSS pair and route analog AVdd/AVss separately if the application uses high-precision ADC channels. The ICSP programming pins (RB6/ICSPCLK and RB7/ICSPDAT) must be brought out to a header or test pad for in-circuit programming and debug using MPLAB ICD 4 or PICkit 5.
Estimated: A common pitfall is assuming that any PIC16F184xx device can replace any other regardless of temperature grade. Industrial -E and -I grade parts (-40C to +85C or -40C to +125C respectively) are NOT AEC-Q100 qualified; only /VAO variants satisfy automotive PPAP and EMC compliance. Additionally, ensure that the ICSPDAT/ICSPCLK pins are not strapped to loads that prevent in-circuit programming - weak pull-ups to VDD are recommended. Finally, when migrating between F1834x and F1844x families, verify that the ADCC peripheral registers are mapped to the same SFR addresses, as the ADCC was a new addition to F1844x and is absent on F1834x.
Route the EUSART TX/RX lines (RC6/RC7) as a short differential pair if the application uses RS-485 or LIN at high baud rates. Keep the SPI bus lines (RC3/SCK, RC4/SDI, RC5/SDO, plus RA5 as chip-select) length-matched within 5 mm to avoid skew at 8 MHz+ SPI clocks. For PWM-driven loads, route the CWG outputs (typically RB4/RB5 or RC0/RC1) directly to gate-driver inputs without series resistors greater than 33 ohm, which would slow edge rates and increase switching losses in the driven half-bridge.
Compliance Information
AEC-Q100 qualified via /VAO automotive suffix per Microchip product page. RoHS and REACH compliance per Microchip environmental certification. PPAP documentation available on request from Microchip for automotive OEM programs.
