PIC18F47K40T-I/MV - 8-bit MCU, 128KB Flash, 64MHz, 40-UQFN | Microchip
MPN: PIC18F47K40T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.92 | $3.92 |
| 10 | $3.53 | $35.30 |
| 100 | $3.14 | $314.00 |
| 500 | $2.82 | $1,410.00 |
| 1,000 | $2.51 | $2,510.00 |
PIC18F47K40T-I/MV Overview
An 8-bit microcontroller (MCU) is a programmable processor that executes instructions with an 8-bit data width, integrating CPU, memory and peripherals onto a single die. PIC18 MCUs extend the baseline PIC16 architecture with a 16-bit instruction word, linear memory model and C-optimized RISC core, positioning them in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC18F47K40 family adds eXtreme Low-Power (XLP) technology, allowing the device to sleep at nanoampere currents and wake on peripheral events without CPU intervention.
Key features include Core Independent Peripherals such as the Complementary Waveform Generator (CWG), Configurable Logic Cell (CLC), Windowed Watchdog Timer (WWDT), CRC/Memory Scan, Hardware CVD, Zero-Cross Detect and Peripheral Pin Select. Analog integration delivers a 10-bit ADC2 with Computation, a 5-bit DAC, comparators and a 10-bit PWM with CCP, while communication is served by EUSART, MSSP (I2C/SPI) and a second MSSP on selected pins. The MV package supplies 36 I/O pins supporting up to 36 digital or 14 analog channels.
Typical applications span IoT sensor nodes, industrial control and home appliance user interfaces, automotive body and lighting controllers, medical handheld instruments, USB-CDC/HID peripherals and battery-powered metering. Design considerations include allocating decoupling at each VDD/VSS pair, routing the 5V-tolerant I/O tracks carefully to avoid injection into analog rails, and selecting an appropriate ICSP programming header for production firmware updates.
Drop-in alternatives for PIC18F47K40T-I/MV — 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 PIC18F47K40T-I/MV (same form factor and footprint) — differing in Operating Temperature, Package, Program Memory (Flash), ADC, Data EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F47K40-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F47K40T-I/MV Maximum Ratings & Electrical Characteristics
| Device Family | PIC18F XLP |
| Core Architecture | 8-bit PIC RISC |
| Program Memory (Flash) | 128 KB (64K x 16 words) |
| Data SRAM | 4 KB |
| Data EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage (VDD) | 2.3 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit ADC2 with Computation, up to 35 channels |
| DAC | 5-bit, 1 channel |
| Comparators | 2 |
| PWM / CCP | 10-bit PWM with CCP, 2 CCP modules |
| Communication | 2x EUSART, 2x MSSP (I2C/SPI) |
| Core Independent Peripherals | CWG, CLC, WWDT, CRC/SCAN, Hardware CVD, ZCD |
| Package | 40-UQFN (MV) 5x5 mm |
| Operating Temperature | -40C to +85C (Industrial, 'I') |
| Mounting Type | Surface Mount |
| Packaging Format | Tape and Reel ('T' suffix) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18F47K40T-I/MV Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear (reset) input or digital input RE3 |
| Pin 2 | RA0 — GPIO RA0 / analog AN0 |
| Pin 3 | RA1 — GPIO RA1 / analog AN1 |
| Pin 4 | RA2 — GPIO RA2 / analog AN2 |
| Pin 5 | RA3 — GPIO RA3 / analog AN3 / reference voltage |
| Pin 6 | RA4 — GPIO RA4 / analog AN4 |
| Pin 7 | RA5 — GPIO RA5 / analog AN5 |
| Pin 8 | RA6 — GPIO RA6 / oscillator |
| Pin 9 | RA7 — GPIO RA7 / oscillator |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | RB0 — GPIO RB0 / analog AN12 / ZCD |
| Pin 13 | RB1 — GPIO RB1 / analog AN10 |
| Pin 14 | RB2 — GPIO RB2 / analog AN8 |
| Pin 15 | RB3 — GPIO RB3 / analog AN9 |
| Pin 16 | RB4 — GPIO RB4 / analog AN11 |
| Pin 17 | RB5 — GPIO RB5 / analog AN13 |
| Pin 18 | RB6 — GPIO RB6 / ICSPCLK |
| Pin 19 | RB7 — GPIO RB7 / ICSPDAT |
| Pin 20 | VSS — Ground reference |
| Pin 21 | VDD — Positive supply voltage |
| Pin 22 | RC0 — GPIO RC0 |
| Pin 23 | RC1 — GPIO RC1 |
| Pin 24 | RC2 — GPIO RC2 |
| Pin 25 | RC3 — GPIO RC3 |
| Pin 26 | RC4 — GPIO RC4 |
| Pin 27 | RC5 — GPIO RC5 |
| Pin 28 | RC6 — GPIO RC6 |
| Pin 29 | RC7 — GPIO RC7 |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive supply voltage |
| Pin 32 | RD0 — GPIO RD0 |
| Pin 33 | RD1 — GPIO RD1 |
| Pin 34 | RD2 — GPIO RD2 |
| Pin 35 | RD3 — GPIO RD3 |
| Pin 36 | RD4 — GPIO RD4 |
| Pin 37 | RD5 — GPIO RD5 |
| Pin 38 | RD6 — GPIO RD6 |
| Pin 39 | RD7 — GPIO RD7 |
| Pin 40 | RE0 — GPIO RE0 / analog AN5 |
Typical Applications
PIC18F47K40T-I/MV is suitable for 6 applications: Industrial IoT Sensor Node, Home Appliance User Interface, Automotive Body and Lighting Controller, Medical Handheld Instrument, USB-CDC/HID Peripheral Device, Battery-Powered Metering.
Industrial IoT Sensor Node
The PIC18F47K40T-I/MV's XLP sleep current as low as 50 nA with RTCC retention enables multi-year battery life on a single coin cell. Its 128 KB Flash and 4 KB SRAM comfortably host C-compiled MQTT or Modbus firmware for wireless sensor nodes using SPI-connected radio modules. Hardware CVD enables robust capacitive touch or liquid-level sensing without CPU overhead, and CLC blocks can implement custom glue between sensors and the radio wake-up pin. The 36 GPIO are routed via Peripheral Pin Select, allowing PCB layout flexibility as RF routing constraints evolve. Industrial -40C to +85C operation is well matched to outdoor sensor enclosures and factory floor deployment.
Recommended
Home Appliance User Interface
The PIC18F47K40T-I/MV drives capacitive touch buttons via the integrated Hardware CVD peripheral, eliminating the dedicated touch IC and reducing BOM cost. Its 10-bit PWM with two CCP modules provides smooth LED dimming and buzzer frequency generation. The Complementary Waveform Generator (CWG) produces dead-band-corrected signals for H-bridge motor control in washing machines or range hoods. The 40-UQFN 5x5 mm package keeps the PCB compact behind glass panels, while industrial temperature grade ensures reliability in kitchen environments. EUSART and MSSP support UART-to-WiFi bridges for smart appliance connectivity.
Recommended
Automotive Body and Lighting Controller
While the PIC18F47K40T-I/MV itself is industrial-grade, the silicon and peripheral set enable body-control and LED-driving subsystems inside non-critical vehicle networks. The CWG delivers complementary PWM with programmable dead-band for half-bridge lighting drivers, eliminating shoot-through. Zero-Cross Detect (ZCD) supports TRIAC control of AC-driven interior lamps. Peripheral Pin Select allows the same firmware image to map PWM outputs to different pins across vehicle variants, simplifying part numbering. CAN-like communication is supported via EUSART bridges to external transceivers, and the WWDT provides the safety-integrity window required by ISO 26262 non-ASIL subsystems.
Recommended
Medical Handheld Instrument
The PIC18F47K40T-I/MV's combination of XLP low-power modes and 10-bit ADC2 with Computation is well suited to battery-powered diagnostic instruments such as glucose meters, pulse oximeters and spirometers. Computation oversampling averages multiple ADC samples in hardware, improving signal-to-noise ratio on small analog front-ends. 256 B of EEPROM stores calibration coefficients that must survive power cycles. The 5x5 mm UQFN package fits inside a slim handheld enclosure. Industrial temperature grade supports clinical environments, and the integrated MSSP interfaces directly to SPI OLED displays used in modern diagnostic readouts.
Recommended
USB-CDC/HID Peripheral Device
The PIC18F47K40T-I/MV can implement USB-CDC virtual COM port or HID-class peripherals by pairing with an external USB-to-UART bridge or by migrating to the PIC18F47K50 family which integrates USB. Here the device serves as the user-interface controller: reading buttons, driving RGB LEDs via 10-bit PWM, and forwarding structured HID reports via EUSART to a USB bridge. The 36 GPIO support matrix keypads, rotary encoders and OLED displays. Hardware CVD can detect proximity or slider gestures for premium peripherals. Industrial temperature grade meets consumer-electronics reliability expectations.
Recommended
Battery-Powered Metering
For electricity, gas or water meters, the PIC18F47K40T-I/MV's XLP technology with 50 nA sleep current and the 5-bit DAC for sensor excitation enables 10+ year battery life on a single lithium cell. The integrated 10-bit ADC2 with Computation oversamples current-shunt or pulse-output flow sensors, while the on-chip EEPROM logs rolling consumption history. WWDT and CRC/SCAN provide tamper-detection and memory-integrity checks required by metering standards. Peripheral Pin Select lets designers place pulse-output opto-isolators and tamper switches on any convenient pin without PCB rework.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F47K40T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F47K40-I/MV |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 40-UQFN (MV) 5x5 mm | 40-UQFN (MV) 5x5 mm - same |
| Flash Memory | 128 KB | 128 KB |
| SRAM | 4 KB | 4 KB |
| EEPROM | 256 B | 256 B |
| Maximum Frequency | 64 MHz | 64 MHz |
| I/O Pins | 36 | 36 |
| Packaging Format | Tape and Reel | Tray |
Key Differentiators
- Tape-and-reel packaging for high-volume SMT assembly (vs PIC18F47K40-I/MV)
- Latest-generation Core Independent Peripherals (vs PIC18F46K40T-I/PT)
- Compact 5x5 mm footprint with 36 GPIO (vs PIC18F45K50-I/MV)
Design Notes
Place a 100 nF decoupling capacitor within 3 mm of each VDD/VSS pin pair (pins 11/20, 21/30, 31/40) to suppress transient switching currents from the 64 MHz core. Add a bulk 4.7 uF tantalum or ceramic at the board supply entry. The XLP sleep current of 50 nA typical requires clean regulator design with low Iq LDOs such as MCP1700 to preserve battery life.
Route the 40-UQFN package with 0.4 mm pitch traces and 0.2 mm via-in-pad for the exposed thermal pad, which must be soldered to a continuous ground copper pour for thermal and electrical reference. Keep analog traces (RA0-RA5, RB0-RB5) short and away from PWM-driven RB6/RB7/RC2 digital lines to minimize cross-coupling. Use a 4-layer stackup with a dedicated ground plane under the device.
Do not configure MCLR as an input without the internal pull-up enabled or a valid external pull-up, or the device will randomly reset. Peripheral Pin Select (PPS) mappings must be unlocked via the PPSLOCK register sequence in firmware before changes take effect - a frequent cause of seemingly dead GPIO pins. Ensure the Configuration Words set the oscillator to a valid source (HFINTOSC default) or the part will fail to start with no external clock.
When using Hardware CVD for capacitive touch, route the CVD shield electrode beneath the touch traces to reduce moisture and EMI coupling. Keep the ADC acquisition time longer than 1 us for high-impedance sources; ADC2 with Computation oversampling improves SNR by 12 dB per 4x averaging. For SPI runs above 4 MHz, add 33 ohm series resistors to dampen reflections on long traces.
Compliance Information
Industrial temperature grade (-40C to +85C, 'I' suffix). RoHS and lead-free confirmed by Microchip product page. Not AEC-Q100 qualified - choose PIC18F46Q84 for automotive.
