PIC18F57K42-E/MV - 64MHz 8-bit MCU, 128KB Flash, 48-UQFN | Microchip
MPN: PIC18F57K42-E/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.1 | $51.00 |
| 100 | $4.42 | $442.00 |
| 500 | $3.91 | $1,955.00 |
| 1,000 | $3.55 | $3,550.00 |
| 3,000 | $3.2 | $9,600.00 |
PIC18F57K42-E/MV Overview
An 8-bit microcontroller (MCU) is a programmable embedded processor that integrates a CPU, memory, and peripherals onto a single silicon die. The PIC18 family sits at the top of Microchip's 8-bit portfolio, sitting between baseline PIC10/12/16 parts and higher-end dsPIC/32-bit families. The PIC18FxxK42 series specifically targets low-power (XLP) applications with rich analog integration including 12-bit ADC2 with computation, DAC, comparators, and op amps, alongside DMA, vector interrupts, and configurable logic cells (CLC).
Key features of the PIC18F57K42 include the 12-bit ADC2 module with automatic averaging and threshold scanning, multiple SPI/I2C/UART interfaces with LIN support, DMA controllers for offloading the CPU, and PWM/CCP modules for motor and power control. The device includes 44 user I/O pins with peripheral pin select (PPS) for flexible signal routing. Core independent peripherals allow sensor interfacing and signal generation without CPU intervention, lowering active time and overall power consumption. The XLP (eXtreme Low Power) technology brings deep sleep currents under 50nA with retention RAM.
From an architectural standpoint, the PIC18F57K42 uses a 16-bit modified Harvard architecture with separate program and data buses, executing most instructions in a single cycle. The 128KB Flash supports self-programmability via ICSP, and 256B of EEPROM provides non-volatile data storage. The 8KB SRAM includes 1KB of retention RAM that survives sleep modes for state preservation.
Typical applications include industrial sensor nodes, motor control drives, IoT edge devices, building automation, HVAC control, low-power wireless sensor hubs, and consumer appliances. The combination of USB-less 48-pin density, 64MHz performance, and large memory makes it ideal for protocol-rich appliances and IoT gateways. Designers favor it for code-density, deterministic interrupt latency, and Microchip's mature MPLAB X toolchain with XC8 compiler support.
When designing with the PIC18F57K42-E/MV, ensure the UQFN-48 PCB footprint includes thermal pad soldering per IPC-7351 for heat dissipation, and follow Microchip's AN2644 application note for optimal XLP sleep-mode configuration. The 48-UQFN MV package has tight pad pitch - 0.4mm spacing - so stencil design and reflow profile must be controlled during assembly.
This page consolidates distributor pricing, drop-in alternatives within the PIC18FxxK42 family and cross-brand 8-bit MCU options, and practical design notes that go beyond the manufacturer datasheet to support component selection, sourcing, and PCB layout decisions.
Drop-in alternatives for PIC18F57K42-E/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 PIC18F57K42-E/MV (same form factor and footprint) — differing in Package, ADC, Comparators, DMA, PWM Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F57K42-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F56K42-I/MV
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC18F57K42-I/PT
✅ Drop-In✓ In Stock
$2.72 / Unit
View Datasheet →PIC18F55K42-I/MV
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC18F47K42-I/MV
✅ Drop-In✓ In Stock
$2.04 / Unit
View Datasheet →PIC18F57K42-E/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit (modified Harvard) |
| Family | PIC18FxxK42 (XLP, 12-bit ADC2) |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data RAM | 8 KB |
| EEPROM | 256 B |
| Package | 48-pin UQFN (MV), 6x6 mm |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (extended, -E grade) |
| Number of I/O Pins | 44 |
| ADC | 12-bit ADC2 with computation, up to 43 channels |
| DAC | 5-bit and 8-bit DAC outputs |
| Communication Interfaces | UART, SPI, I2C, LIN bus |
| PWM / CCP | Multiple PWM channels and CCP modules |
| DMA Controllers | Yes (multi-channel) |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals (CIP) | CLC, CWG, SMT, PWM, NCO |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F57K42-E/MV Pin Configuration
| Pin 1 | RA0/ANA0 — Analog input 0 / Digital I/O |
| Pin 2 | RA1/ANA1 — Analog input 1 / Digital I/O |
| Pin 3 | RA2/ANA2 — Analog input 2 / Digital I/O |
| Pin 4 | RA3/ANA3 — Analog input 3 / Digital I/O |
| Pin 5 | RA4/ANA4 — Analog input 4 / Digital I/O |
| Pin 6 | RA5/ANA5 — Analog input 5 / Digital I/O |
| Pin 7 | RA6/ANA6 — Analog input 6 / Digital I/O |
| Pin 8 | RA7/ANA7 — Analog input 7 / Digital I/O |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RA8 — Digital I/O only |
| Pin 11 | RA9 — Digital I/O only |
| Pin 12 | RA10 — Digital I/O only |
| Pin 13 | RA11 — Digital I/O only |
| Pin 14 | RA12 — Digital I/O only |
| Pin 15 | VDD — Positive supply |
| Pin 16 | RB0 — Digital I/O / Interrupt-on-change |
| Pin 17 | RB1 — Digital I/O / Interrupt-on-change |
| Pin 18 | RB2 — Digital I/O / Interrupt-on-change |
| Pin 19 | RB3 — Digital I/O / Interrupt-on-change |
| Pin 20 | RB4 — Digital I/O / Interrupt-on-change |
| Pin 21 | RB5 — Digital I/O / Interrupt-on-change |
| Pin 22 | RB6/ICSPCLK — Digital I/O / ICD clock |
| Pin 23 | RB7/ICSPDAT — Digital I/O / ICD data |
| Pin 24 | VSS — Ground reference |
| Pin 25 | RC0 — Digital I/O |
| Pin 26 | RC1 — Digital I/O |
| Pin 27 | RC2 — Digital I/O |
| Pin 28 | RC3 — Digital I/O |
| Pin 29 | RC4 — Digital I/O |
| Pin 30 | RC5 — Digital I/O |
| Pin 31 | RC6 — Digital I/O |
| Pin 32 | RC7 — Digital I/O |
| Pin 33 | VDD — Positive supply |
| Pin 34 | RD0 — Digital I/O |
| Pin 35 | RD1 — Digital I/O |
| Pin 36 | RD2 — Digital I/O |
| Pin 37 | RD3 — Digital I/O |
| Pin 38 | RD4 — Digital I/O |
| Pin 39 | RD5 — Digital I/O |
| Pin 40 | RD6 — Digital I/O |
| Pin 41 | RD7 — Digital I/O |
| Pin 42 | RE0 — Digital I/O |
| Pin 43 | RE1 — Digital I/O |
| Pin 44 | RE2 — Digital I/O |
| Pin 45 | RE3 — Digital I/O |
| Pin 46 | VDD — Positive supply |
| Pin 47 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Pin 48 | OSC2/CLKOUT — Crystal oscillator output / clock out |
Typical Applications
PIC18F57K42-E/MV is suitable for 6 applications: Industrial Sensor Node and Condition Monitoring, Low-Power IoT Edge Device with Sensor Hub, HVAC and Building Automation Controller, Brushless DC Motor Control Drive, Consumer Appliance Control Board, Smart Agriculture Sensor and Irrigation Controller.
Industrial Sensor Node and Condition Monitoring
The PIC18F57K42-E/MV fits industrial sensor nodes because its 12-bit ADC2 with computation and threshold scanning reads multiple sensors without CPU wake-up, extending battery life. The 64MHz CPU and 128KB Flash fit protocol stacks like IO-Link, MODBUS RTU, or proprietary RS-485 protocols. Its 1.8V-5.5V VDD range allows direct operation from 3.3V or 5V industrial rails, while the extended -40C to +125C range ensures reliability in unheated enclosures. Pair with an RS-485 transceiver for industrial bus connectivity, and use the CLC peripheral to debounce and time-stamp digital inputs without software overhead. XLP deep sleep keeps quiescent current in the nA range for multi-year battery deployments.
Recommended
Low-Power IoT Edge Device with Sensor Hub
The PIC18F57K42-E/MV is ideal for low-power IoT edge devices because its XLP technology enables deep sleep currents under 50nA with 1KB retention RAM preserving state across sleep cycles. The 128KB Flash fits BLE-host stacks or sub-GHz proprietary protocols, while the 12-bit ADC2 samples analog sensors autonomously via DMA. The 44 user I/O with peripheral pin select (PPS) allow flexible pin assignment for SPI sensors, I2C devices, and GPIO buttons without PCB redesign. Pair with a SX1276 LoRa transceiver for long-range outdoor IoT, or with an RN4871 BLE module for short-range mobile-connected applications. The extended temperature range supports outdoor and industrial-edge deployments.
Recommended
HVAC and Building Automation Controller
The PIC18F57K42-E/MV is well-suited for HVAC damper, fan, and valve controllers due to its 12-bit ADC2 for temperature/pressure sensing, multi-channel PWM for motor and proportional valve drive, and 128KB Flash that fits BACnet MS-TP or proprietary building-automation stacks. The 44 I/O allow interfacing multiple thermistors, contactors, and triac drivers without an additional I/O expander. The DMA offloads UART activity from the CPU so the core remains free for control-loop math, while the LIN bus interface supports HVAC-specific peripherals. The -40C to +125C extended temperature range handles mechanical-room thermal environments.
Recommended
Brushless DC Motor Control Drive
The PIC18F57K42-E/MV fits BLDC motor control applications because its multi-channel PWM and CCP modules generate complementary three-phase drive signals with dead-band control, while the 12-bit ADC2 with DMA samples back-EMF and current sense synchronously. The CWG (Complementary Waveform Generator) peripheral produces center-aligned PWM without CPU intervention, freeing cycles for speed-loop calculation. 128KB Flash holds sensorless or sensored BLDC firmware libraries, and 8KB RAM handles field-oriented control (FOC) math tables. The extended temperature range supports motor-driver co-location with MOSFETs. Pair with a DRV8313 three-phase gate driver for integrated compact drives.
Recommended
Consumer Appliance Control Board
The PIC18F57K42-E/MV serves consumer appliance control boards - washing machines, dishwashers, refrigerators, and coffee machines - because it balances code space (128KB Flash for user-interface and motor-control code), RAM (8KB for LCD buffer and state machines), and GPIO (44 I/O for buttons, displays, sensors, and relay drivers). The 12-bit ADC2 monitors temperature and water level, the multi-channel PWM drives pumps and fans, and LIN bus interfaces with display sub-modules. The XLP modes help appliances meet strict standby power regulations like EU Tier 2 (<0.5W). The -E temperature variant handles oven-adjacent environments.
Recommended
Smart Agriculture Sensor and Irrigation Controller
The PIC18F57K42-E/MV is a strong fit for smart agriculture soil-moisture, weather, and irrigation controllers due to its low-power XLP modes (nA deep sleep), 12-bit ADC2 for moisture and pH sensing, and 128KB Flash for time-based irrigation scheduling. The DMA-driven UART offloads LoRa or NB-IoT modem communication, while the CLC and SMT peripherals debounce rain sensors and count flow-meter pulses without CPU wake-ups. The 1.8V-5.5V VDD range allows solar-battery operation, and the extended -40C to +125C temperature range handles outdoor cabinet environments. Pair with a soil moisture probe and a latching solenoid driver for low-power irrigation valves.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F57K42-E/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F57K42-I/MV | PIC18F56K42-I/MV | PIC18F57K42-I/PT | PIC18F55K42-I/MV |
|---|---|---|---|---|---|
| Package | 48-UQFN (MV) 6x6 mm | 48-UQFN (MV) - same | 48-UQFN (MV) - same | 48-TQFP (PT) - differs | 48-UQFN (MV) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 64 KB (-50%) | 128 KB | 32 KB (-75%) |
| RAM | 8 KB | 8 KB | 4 KB (-50%) | 8 KB | 2 KB (-75%) |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Temperature | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Number of I/O | 44 | 44 | 44 | 44 | 44 |
Key Differentiators
- Largest Flash in PIC18FxxK42 UQFN-48 family at 128KB (vs PIC18F56K42-I/MV)
- Extended -40C to +125C temperature range as standard part (vs PIC18F57K42-I/MV)
- Compact 48-UQFN footprint for high-I/O density designs (vs PIC18F47K42-I/MV)
Design Notes
The 48-pin UQFN (MV) package uses a 6x6 mm body with 0.4mm pitch pads and a central exposed pad (EP) that must be soldered to the PCB for thermal dissipation. Follow Microchip AN2644 for UQFN PCB footprint design. Use NSMD pads with a 1:1.2 ratio pad-to-mask, and ensure the EP has a minimum of 9 thermal vias (0.2mm drill, 0.5mm pitch) to the inner ground plane. Stencil aperture should be 80-90% of the pad size to limit solder balling.
Place 100nF decoupling capacitors within 3mm of each VDD pin and a single 4.7uF bulk capacitor near the package. The PIC18F57K42 ADC2 accuracy is highly sensitive to VDD noise - use a ferrite bead or pi-filter between digital VDD and analog AVDD if analog readings are critical. For XLP sleep current verification, follow Microchip AN2353 for accurate nA-range measurements; standard multimeters are insufficient.
Do not rely on default FOSC configuration without verifying with CONFIG1 register settings - the PIC18F57K42 supports multiple oscillator modes (HFINTOSC, EC, XT, HS). Pinout for the MV package is NOT pin-compatible with the PT (48-TQFP) or PT package (40-pin) variants; schematic must match the actual package. PPS assignments must be unlocked via the PPSLOCK register sequence before reprogramming - lockouts are a common debug issue.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose AEC-Q100 qualified PIC18 variants for automotive. Lead-free and halogen-free per Microchip environmental compliance declarations.
