PIC18F46K40T-E/MVVAO - 64KB Flash 8-bit MCU w/ XLP | Microchip
MPN: PIC18F46K40T-E/MVVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.43 | $44.30 |
| 100 | $3.95 | $395.00 |
| 500 | $3.51 | $1,755.00 |
| 1,000 | $3.12 | $3,120.00 |
| 3,300 | $2.78 | $9,174.00 |
PIC18F46K40T-E/MVVAO Overview
What is an 8-bit MCU? An 8-bit microcontroller is a single-chip computer that processes data in 8-bit words and integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), small EEPROM, and a rich set of peripherals (ADC, timers, PWM, communication interfaces). PIC18-family MCUs sit above PIC16/PIC10 in Microchip's 8-bit hierarchy and offer enhanced instruction sets, larger memory, and Core Independent Peripherals (CIPs) that offload tasks from the CPU, allowing designers to add functionality without increasing clock speed or power.
Key differentiating features of this part include the XLP (eXtreme Low Power) technology with sub-uA sleep currents, a 10-bit ADC2 with computation (ADC2), a 5-bit DAC, comparators, PWM, CWG (Complementary Waveform Generator), HLT (Hardware Limit Timer), WWDT (Windowed Watchdog Timer), and CRC/SCAN memory integrity checking. Together these CIPs enable sensor interfacing, motor control, and safety-critical loops without CPU intervention.
The PIC18F46K40T-E/MVVAO uses the enhanced mid-range PIC18 core with 83 instructions and 31-level deep hardware stack. Connectivity options include I2C, SPI, UART/USART, and LINbus, while timers support capture/compare/PWM with up to 14-bit resolution. The 40-pin UQFN (MV) package is the smallest footprint option in the family and supports AEC-Q100 Grade 1 (-40C to +125C) for automotive ECUs and industrial sensor nodes.
Typical applications include automotive body and sensor modules, low-power IoT sensor nodes, BLDC motor control subsystems, HVAC control boards, lighting controllers, and small white-goods user interfaces. The combination of XLP sleep currents and CIP analog peripherals makes it well-suited for battery-powered or energy-harvesting products that must wake, sample, transmit, and return to deep sleep without CPU load.
Design tip: route AVSS and VSS analog/digital grounds to a single point star-ground at the UQFN thermal pad, and place the two VDD pins' decoupling capacitors within 2 mm of each pin to meet the ADC2 noise floor requirement. The thermal pad must be soldered to a continuous ground pour for thermal dissipation and pin-1 orientation stability.
This page synthesizes XAIPART distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Pricing references are as of 2026-09-28.
Drop-in alternatives for PIC18F46K40T-E/MVVAO — 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 PIC18F46K40T-E/MVVAO (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Program Memory (Flash), I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F46K40T-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F46K40-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F46K40-E/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.86 / Unit
View Datasheet →PIC18F46K40T-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F46K22-E/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.72 / Unit
View Datasheet →PIC18F46K40T-E/MVVAO Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit enhanced mid-range |
| Instruction Set | 83 instructions, 31-level hardware stack |
| Program Memory (Flash) | 64 KB |
| SRAM | 4 KB |
| EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +125C (AEC-Q100 Grade 1, E suffix) |
| Package | 40-pin UQFN (MV) 5x5 mm with thermal pad |
| ADC | 10-bit ADC2 with computation |
| DAC | 5-bit DAC |
| Comparators | Yes |
| PWM Channels | Multiple (peripheral-dependent) |
| Connectivity | I2C, SPI, UART/USART, LINbus |
| Core Independent Peripherals | CWG, HLT, WWDT, CRC/SCAN |
| XLP Sleep Current | Sub-microamp (XLP technology) |
| I/O Pins | 36 (per 40-pin UQFN MV package) |
| Timers | Multiple 8/16-bit with CCP |
| Mounting Type | Surface Mount |
| MSL Level | MSL3 (per JEDEC J-STD-020, reflow 260C) |
| RoHS Status | Compliant |
| AEC-Q100 | Qualified (Grade 1) |
| Lead-Free | Yes |
PIC18F46K40T-E/MVVAO Pin Configuration
| Pin 1 | RA0/AN0 — GPIO / Analog input 0 |
| Pin 2 | RA1/AN1 — GPIO / Analog input 1 |
| Pin 3 | RA2/AN2 — GPIO / Analog input 2 |
| Pin 4 | RA3/AN3 — GPIO / Analog input 3 |
| Pin 5 | RA4 — GPIO |
| Pin 6 | RA5 — GPIO |
| Pin 7 | RA6 — GPIO |
| Pin 8 | RA7 — GPIO |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage |
| Pin 11 | RB0/INT — GPIO / External interrupt |
| Pin 12 | RB1 — GPIO |
| Pin 13 | RB2 — GPIO |
| Pin 14 | RB3 — GPIO |
| Pin 15 | RB4 — GPIO |
| Pin 16 | RB5 — GPIO |
| Pin 17 | RB6/PGC — GPIO / ICSP clock |
| Pin 18 | RB7/PGD — GPIO / ICSP data |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RC0 — GPIO |
| Pin 22 | RC1 — GPIO |
| Pin 23 | RC2 — GPIO |
| Pin 24 | RC3/SCL — GPIO / I2C clock |
| Pin 25 | RC4/SDA — GPIO / I2C data |
| Pin 26 | RC5 — GPIO |
| Pin 27 | RC6/TX — GPIO / UART TX |
| Pin 28 | RC7/RX — GPIO / UART RX |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Positive supply voltage |
| Pin 31 | RD0 — GPIO |
| Pin 32 | RD1 — GPIO |
| Pin 33 | RD2 — GPIO |
| Pin 34 | RD3 — GPIO |
| Pin 35 | RD4 — GPIO |
| Pin 36 | RD5 — GPIO |
| Pin 37 | RD6 — GPIO |
| Pin 38 | RD7 — GPIO |
| Pin 39 | VSS — Ground reference |
| Pin 40 | VDD — Positive supply voltage |
Typical Applications
PIC18F46K40T-E/MVVAO is suitable for 6 applications: Automotive Body Control Modules, Low-Power IoT Sensor Nodes, BLDC and Small Motor Control, HVAC and White Goods User Interfaces, Automotive Lighting Controllers, Industrial Sensor Signal Conditioning.
Automotive Body Control Modules
The PIC18F46K40T-E/MVVAO's AEC-Q100 Grade 1 qualification and -40C to +125C operating range make it ideal for automotive body control modules such as door lock controllers, mirror positioners, and seat control ECUs. With 64 KB Flash and 4 KB SRAM, the device runs LINbus stacks and capacitive touch firmware while the 10-bit ADC2 with computation handles wiper position and ambient light sensing. The 40-pin UQFN package keeps PCB area under 25 mm², essential for space-constrained door-module PCBs. CIP peripherals like CWG drive LED backlighting and HLT handles stall-detection on small motors without CPU load, freeing the 64 MHz core for diagnostics and CAN-LIN gateway functions.
Recommended
Low-Power IoT Sensor Nodes
With XLP sub-microamp sleep current and 64 KB Flash for over-the-air update buffers, the PIC18F46K40T-E/MVVAO fits battery-powered IoT sensor nodes such as wireless thermostats, environmental monitors, and asset trackers. The 10-bit ADC2 with computation handles sensor fusion (temperature, humidity, CO2) while the integrated CRC/SCAN peripheral validates flash integrity in the field. UART/USART and I2C interfaces connect to popular wireless modules like RN4870 or SX126x LoRa transceivers. At 64 MHz the MCU completes a wake-measure-transmit cycle in under 5 ms, leaving the radio duty cycle dominant and enabling multi-year battery life on 2x AA cells.
Recommended
BLDC and Small Motor Control
The PIC18F46K40T-E/MVVAO's Complementary Waveform Generator (CWG) and PWM peripherals make it well-suited for small BLDC and brushed DC motor control applications including HVAC blowers, water pumps, and small appliance fans. The 10-bit ADC2 samples back-EMF at the commutation point while CWG produces the complementary drive signals with dead-band control. Hardware Limit Timer (HLT) provides automatic shutdown on stalled rotor conditions without CPU intervention, a critical safety feature for unattended motor systems. The 40-pin UQFN footprint fits within 25 mm², allowing compact motor-driver daughterboards for retrofit designs.
Recommended
HVAC and White Goods User Interfaces
For HVAC control boards, washing machine HMI panels, and refrigerator user interfaces, the PIC18F46K40T-E/MVVAO provides ample Flash (64 KB) for graphical LCD drivers and capacitive touch libraries while keeping power consumption low. The 5V-tolerant GPIO drives LED indicators and seven-segment displays directly without level shifters. The integrated DAC and comparators implement proportional valve control loops for refrigerant regulation, while the UART interface communicates with main appliance controllers. AEC-Q100 qualification at -40C to +125C supports installations near heat-generating compressors.
Recommended
Automotive Lighting Controllers
The PIC18F46K40T-E/MVVAO drives sequential LED tail-light controllers, daytime running light modules, and interior ambient lighting strips. The CWG peripheral generates accurate PWM dimming curves while the 10-bit ADC reads ambient light sensors for automatic headlight dimming. AEC-Q100 Grade 1 qualification with -40C to +125C range handles under-hood and exterior lighting thermal stress. LINbus connectivity enables integration into the vehicle body network for centralized lighting control without dedicated CAN bus overhead. The 5x5 mm UQFN package fits within lamp-module PCBs where space is severely constrained.
Recommended
Industrial Sensor Signal Conditioning
For industrial 4-20 mA loop-powered transmitters and process sensor signal conditioning, the PIC18F46K40T-E/MVVAO provides 10-bit ADC2 accuracy with computation averaging for noise reduction. The DAC generates excitation currents for RTD and bridge sensors, while comparators implement hardware over-range detection for fail-safe operation. I2C and SPI interfaces connect to industrial-grade EEPROM for calibration storage and to digital potentiometers for span adjustment. The -40C to +125C extended temperature and robust ESD performance make this MCU suitable for factory-floor installations with high EMI exposure.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F46K40T-E/MVVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F46K40T-E/MV | PIC18F46K40-I/MV | PIC18F46K40-E/MV | PIC18F46K40T-I/MV | PIC18F46K22-E/MV |
|---|---|---|---|---|---|---|
| Package | UQFN-40 (MV) 5x5 mm | UQFN-40 (MV) - same | UQFN-40 (MV) - same | UQFN-40 (MV) - same | UQFN-40 (MV) - same | UQFN-40 (MV) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Temperature | -40C to +125C (E, AEC-Q100) | -40C to +125C (E, no VAO) | -40C to +85C (I, industrial) | -40C to +125C (E, extended) | -40C to +85C (I, industrial) | -40C to +125C (E, extended) |
| Maximum CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| AEC-Q100 Qualification | Yes (Grade 1, VAO suffix) | No (E suffix only) | No (I industrial) | No (E suffix only) | No (I industrial) | No (E suffix only) |
Key Differentiators
- AEC-Q100 Grade 1 automotive qualification with -40C to +125C extended range (vs PIC18F46K40-I/MV)
- VAO (Verified Automotive Operations) certification suffix for OEM traceability (vs PIC18F46K40T-E/MV)
- Tape-and-Reel packaging for high-volume SMD production (vs PIC18F46K40-I/MV (Tray packaging))
- 5x5 mm UQFN-40 footprint for space-constrained designs (vs PIC18F46K40-E/PT (TQFP-44 10x10 mm))
Design Notes
The 40-pin UQFN (MV) package requires the exposed thermal pad to be soldered to a continuous ground pour for both thermal dissipation and pin-1 orientation stability. Place both VDD pins (10, 20, 30, 40) within 2 mm of their respective 100 nF decoupling capacitors, and add a 10 uF bulk capacitor within 5 mm. AVSS and VSS grounds should converge at a single star-ground point at the thermal pad to minimize ADC2 conversion noise from digital switching currents coupling into analog return paths.
Use the XLP Sleep mode between sensor sampling events to achieve sub-microamp quiescent current. Configure all unused peripherals to disabled state in the PMD register before entering Sleep, as peripheral clock gating reduces sleep current by 30-50%. For battery-powered designs using 2x AA cells (3.0 V nominal), the 2.3 V minimum VDD spec allows operation down to ~85% battery depletion without boost converter overhead, simplifying BOM and improving efficiency.
Do not enable pull-ups on pins used as ADC2 analog inputs - the internal pull-up current will inject offset error into the conversion result. The CRC/SCAN peripheral validates Flash integrity only on demand; call it explicitly during safety diagnostics rather than relying on background scan, which can stall interrupt latency. When migrating from PIC18F46K22 designs, note that the K22 lacks ADC2 computation, CWG, and HLT peripherals, so peripheral-mapped code paths must be re-implemented on the K40 die.
Route the ICSP signals PGC (RB6) and PGD (RB7) as a 2-wire pair with ground guard traces to avoid coupling from adjacent PWM or switching signals that could disrupt in-circuit programming. Keep analog input traces (RA0-RA7) away from digital switching nodes, especially PWM outputs on RC1/RC2. The 40-pin UQFN land pattern uses a 0.4 mm pitch with thermal pad vias on a 1.0 mm grid - via-in-pad is acceptable for the thermal pad but not recommended for signal pins due to solder wicking risk.
Compliance Information
AEC-Q100 Grade 1 qualified per VAO suffix. RoHS and REACH compliant per Microchip product page. Halogen-free status not explicitly confirmed in provided data and marked unknown.
