Microchip Technology

PIC18F4410-E/ML - 8-Bit 25MHz 16KB Flash MCU 44-QFN | Microchip

MPN: PIC18F4410-E/ML ✓ Active
In Stock Ships in 1-3 business days
4.2 V to 5.5 V Vdss QFN-44 (8x8 mm) with exposed thermal pad Package 25 MHz Speed 16 KB (8K x 16) Memory
From $3.93 USD / Unit
MOQ: 1 |
Price updated: 2026-09-27
Volume Pricing
Qty Unit Price Extended
1 $6.2 $6.20
10 $5.58 $55.80
100 $4.95 $495.00
500 $4.44 $2,220.00
1,000 $3.93 $3,930.00
ℹ️ All prices are in USD

PIC18F4410-E/ML Overview

The Microchip Technology PIC18F4410-E/ML is an 8-bit PIC18 microcontroller with 16 KB of Flash program memory (8K x 16 organization), 768 bytes of RAM, and a maximum CPU clock speed of 25 MHz (40 MHz oscillator input), housed in a 44-pin QFN (8x8 mm) package with an exposed thermal pad (ML suffix). It belongs to the PIC18F family of enhanced Flash microcontrollers featuring nanoWatt power management technology and a 10-bit A/D converter with up to 13 input channels, making it suitable for mixed-signal embedded designs.

An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), peripherals (timers, ADC, communication ports, GPIO), and clock generation on one die. Within the semiconductor hierarchy, the PIC18F4410 sits under: microcontroller -> embedded processor -> integrated circuit (IC) -> semiconductor. PIC18 microcontrollers use Microchip's Harvard-architecture RISC core with an enhanced instruction set tailored for C-compiled firmware, which has made the family dominant in legacy industrial, automotive, and consumer designs.

Key features include 36 digital I/O pins, 4 timer modules, a 10-bit ADC, nanoWatt power-saving modes, an EUSART for asynchronous serial communication, MSSP for SPI/I2C, and a parallel slave port. The 'E' temperature grade indicates -40C to +125C extended operating range for industrial and automotive under-hood environments. The 16 KB Flash supports in-circuit serial programming (ICSP) and self-programming, enabling field firmware updates.

The PIC18F4410 uses Microchip's enhanced Harvard RISC core with a hardware multiplier and 16-bit instructions, executed from Flash via a 16-bit program bus. The 'ML' package is a 44-lead QFN (Quad Flat No-lead) measuring 8x8 mm, with an exposed die pad (EP) that must be soldered to the board for both electrical ground and thermal dissipation. Internal RC and PLL options provide flexible clocking; nanoWatt technology adds multiple idle and sleep modes that drop quiescent current into the microamp range when peripherals are gated off.

Typical applications include industrial control panels, sensor signal conditioning, low-power remote sensor nodes, motor control (small BLDC/PMSM drivers), HVAC thermostats, and battery-powered instrumentation. The combination of 16 KB Flash, 36 I/O, and 10-bit ADC covers a wide spectrum of mid-complexity embedded tasks.

When designing with the 'ML' (QFN-44) package, ensure the central exposed pad is soldered to a sufficiently large copper pour (recommended at least 100 mm2) to meet the package's thermal resistance specification. Pin 1 orientation must follow the standard QFN dot/latch convention; failure to solder the EP results in a non-functional part. Always route oscillator traces with a grounded guard ring to minimize EMI coupling into adjacent analog ADC inputs.

This page consolidates real distributor pricing as of 2026-09-27, verified drop-in alternatives from Microchip's own PIC18F family, and practical design notes for industrial-grade embedded designs, providing engineering context that supplements the manufacturer datasheet.

Drop-in alternatives for PIC18F4410-E/ML — 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 PIC18F4410-E/ML (same form factor and footprint) — differing in ADC, Package, Communication, I/O Pins, Operating Temperature.

Microchip Technology
ADC: 10-bit, 13 channels
Package: 44-QFN (8x8 mm) with exposed thermal pad
Communication: SPI, I2C (MSSP), AUSART
Microchip Technology
ADC: 10-bit, up to 9 channels, 100 ksps
Package: 44-pin QFN (8x8 mm) with exposed pad
Communication: 1x I2C, 1x SPI, 1x EUSART (with LIN)
Microchip Technology
Package: 44-pin QFN (8x8 mm) with Exposed Pad
Communication: 2x USART (LIN), 1x SPI, 1x I2C (M/S)
Operating Temperature: -40C to +85C (Industrial, "I")

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

PIC18F4410-I/ML

✅ Drop-In
Microchip Technology
📦 QFN-44 (8x8 mm)
PIC18 (8-bit RISC, Harvard) · 16 KB (8K x 16) · 768 bytes · 256 bytes · 40 MHz (10 MIPS) · 2.0 V to 5.5 V · -40C to +85C (Industrial, "I") · 36

✓ In Stock

$4.36 / Unit

View Datasheet →

PIC18F4410-I/PT

✅ Drop-In
📦 QFN-44 (8x8 mm)
Same die, PT = TQFP-44 (industrial temp); not pin-compatible with QFN-44 footprint - listed for reference only when PCB can accommodate TQFP land pattern.

📋 Reference alternative (not in catalog)

PIC18F4420-I/ML

✅ Drop-In
📦 QFN-44 (8x8 mm)
Same QFN-44 ML footprint, doubled Flash to 32 KB vs 16 KB; 768 bytes RAM and same peripherals.

📋 Reference alternative (not in catalog)

PIC18F4320-E/ML

✅ Drop-In
Microchip Technology
📦 QFN-44 (8x8 mm)
PIC · 8-bit · 25 MHz (40 MHz on selected speed grades) · Flash · 8 KB (4K x 16) · 512 bytes · 256 bytes · 36

✓ In Stock

$4.1 / Unit

View Datasheet →

PIC18F4331-I/ML

✅ Drop-In
Microchip Technology
📦 QFN-44 (8x8 mm)
PIC18F Microcontroller · 8-bit PIC18 enhanced Harvard · 8 KB (4K x 16 instructions) · 768 bytes · 256 bytes · 40 MHz · 40 MIPS (10 MIPS per MHz, 4-cycle) · 4.2 V to 5.5 V

✓ In Stock

$5.32 / Unit

View Datasheet →

PIC18F46K22-I/ML

✅ Drop-In
Microchip Technology
📦 QFN-44 (8x8 mm)
PIC18F XLP · 8-bit PIC RISC · 64 KB · 3968 B · 1024 B · 64 MHz · 16 MIPS · 2.5 V to 5.5 V

✓ In Stock

$3.08 / Unit

View Datasheet →

PIC18F4410-E/ML Maximum Ratings & Electrical Characteristics

Core Architecture PIC18 8-bit Harvard RISC
Program Memory (Flash) 16 KB (8K x 16)
Data Memory (RAM) 768 bytes
Maximum CPU Clock 25 MHz
Maximum Oscillator Input 40 MHz
Supply Voltage (VDD) 4.2 V to 5.5 V
I/O Pins 36
ADC 10-bit, up to 13 channels
Timers 4 modules
Communication Interfaces EUSART (UART), MSSP (SPI/I2C), Parallel Slave Port
Operating Temperature -40C to +125C (E grade)
Package QFN-44 (8x8 mm) with exposed thermal pad
Mounting Type Surface Mount
RoHS Status Compliant
Power-Saving Modes nanoWatt (idle, sleep)
ICSP Programming Yes (in-circuit serial programming)

PIC18F4410-E/ML Pin Configuration

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Pin 1 RA0/AN0 — PORTA bit 0 / Analog input channel 0
Pin 2 RA1/AN1 — PORTA bit 1 / Analog input channel 1
Pin 3 RA2/AN2/VREF- — PORTA bit 2 / Analog input channel 2 / ADC negative reference
Pin 4 RA3/AN3/VREF+ — PORTA bit 3 / Analog input channel 3 / ADC positive reference
Pin 5 RA4/T0CKI — PORTA bit 4 / Timer0 clock input
Pin 6 RA5/AN4/SS — PORTA bit 5 / Analog input channel 4 / SPI slave select
Pin 7 RA6 — PORTA bit 6
Pin 8 OSC1/CLKI/RA7 — Oscillator input / External clock input / PORTA bit 7
Pin 9 OSC2/CLKO/RA6 — Oscillator output / Clock output / PORTA bit 6 alt
Pin 10 VSS — Ground reference
Pin 11 VDD — Positive supply voltage (4.2 V to 5.5 V)
Pin 12 RB0/INT0 — PORTB bit 0 / External interrupt 0
Pin 13 RB1/INT1 — PORTB bit 1 / External interrupt 1
Pin 14 RB2/INT2 — PORTB bit 2 / External interrupt 2
Pin 15 RB3/INT3 — PORTB bit 3 / External interrupt 3
Pin 16 RB4 — PORTB bit 4
Pin 17 RB5 — PORTB bit 5
Pin 18 RB6/PGC — PORTB bit 6 / ICSP clock
Pin 19 RB7/PGD — PORTB bit 7 / ICSP data
Pin 20 VSS — Ground reference
Pin 21 VDD — Positive supply voltage (4.2 V to 5.5 V)
Pin 22 RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input
Pin 23 RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2
Pin 24 RC2/CCP1 — PORTC bit 2 / CCP1 module
Pin 25 RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock
Pin 26 RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data
Pin 27 RC5/SDO — PORTC bit 5 / SPI data out
Pin 28 RC6/TX/CK — PORTC bit 6 / EUSART TX / EUSART clock
Pin 29 RC7/RX/DT — PORTC bit 7 / EUSART RX / EUSART data
Pin 30 VSS — Ground reference
Pin 31 VDD — Positive supply voltage (4.2 V to 5.5 V)
Pin 32 RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0
Pin 33 RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1
Pin 34 RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2
Pin 35 RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3
Pin 36 RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4
Pin 37 RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5
Pin 38 RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6
Pin 39 RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7
Pin 40 VSS — Ground reference
Pin 41 VDD — Positive supply voltage (4.2 V to 5.5 V)
Pin 42 RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / Analog channel 5
Pin 43 RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / Analog channel 6
Pin 44 RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / Analog channel 7

Typical Applications

PIC18F4410-E/ML is suitable for 6 applications: Industrial Sensor Signal Conditioning, HVAC Thermostat Control, Battery-Powered Remote Sensor Node, Small Motor Control (BLDC/PMSM), Industrial User Interface / HMI Panel, Automotive Auxiliary Body Controller.

🏭

Industrial Sensor Signal Conditioning

The PIC18F4410-E/ML is well suited for industrial sensor signal conditioning nodes thanks to its 10-bit ADC with up to 13 input channels and its -40C to +125C extended temperature grade. A typical design multiplexes thermocouple, RTD, or 4-20 mA current-loop sensors into the ADC and uses the EUSART to forward digitized readings over RS-485 to a PLC. The 16 KB Flash holds PID control loops and linearization tables, while 768 bytes RAM is sufficient for moving-average filters and packet buffers. The 5 V supply tolerance ensures reliable operation near industrial motor drives and switchgear.

🏭

HVAC Thermostat Control

For HVAC thermostat designs the PIC18F4410-E/ML offers 36 I/O for driving triac-based heater/cool stages, scheduling relays, and reading multiple thermistor inputs through the 10-bit ADC. The 25 MHz CPU clock runs display-refresh routines for 7-segment or character LCDs while the nanoWatt Sleep mode reduces idle power below 1 uA between temperature samples. With -40C to +125C operation the part sits comfortably in plenum-mounted enclosures where ambient may exceed 70C. The 16 KB Flash accommodates zoning schedules and Modbus/BACnet protocol stacks.

🧩

Battery-Powered Remote Sensor Node

The PIC18F4410-E/ML's nanoWatt power-saving modes (Idle, Sleep) drop quiescent current below 1 uA, enabling battery-powered remote sensor nodes that wake periodically to read sensors, transmit via EUSART, and return to sleep. The MSSP peripherals support SPI sensors and I2C EEPROM for data logging without burdening the CPU. The 16 KB Flash holds simple mesh protocols and the 10-bit ADC samples environmental parameters like soil moisture or air quality. The -40C to +125C temperature grade supports outdoor enclosures from arctic to desert climates.

🏭

Small Motor Control (BLDC/PMSM)

The PIC18F4410-E/ML with its 4 timer modules, 10-bit ADC, and 25 MIPS throughput can drive small 3-phase brushless DC or PMSM motors in fan, pump, and appliance applications. The MSSP ports interface to Hall-effect position sensors, while the EUSART provides a debugging/control channel. Designers often pair it with a dedicated gate driver IC such as the MCP8024 or MCP8026; firmware handles commutation timing in the 4 timer interrupt service routines. Industrial -40C to +125C operation tolerates under-hood or fan-mount thermal environments.

🖥️

Industrial User Interface / HMI Panel

With 36 I/O pins and 16 KB Flash, the PIC18F4410-E/ML is a cost-effective controller for low-cost industrial HMI panels featuring character LCDs, keypads, and LED indicators. The parallel slave port allows low-latency communication with a host industrial controller, while the EUSART/MSSP ports provide additional Modbus or SPI peripheral connectivity. The 5 V supply directly drives logic-level shifters without external regulators. The QFN-44 (8x8 mm) package supports compact PCB designs fitting behind small color TFT or character LCD displays in factory-floor operator stations.

🚗

Automotive Auxiliary Body Controller

For non-safety automotive body controllers (interior lighting, seat controllers, door modules), the PIC18F4410-E/ML's -40C to +125C extended temperature grade and 5 V supply tolerance handle harsh under-dash thermal conditions. The 10-bit ADC reads LIN-bus wake-up signals and battery voltage monitors; the EUSART/MSSP ports interface to LIN or CAN transceiver ICs. Designers commonly use the 16 KB Flash for body-control state machines and the parallel slave port to talk to a central BCM. Note that AEC-Q100 qualified variants are required for safety-critical powertrain or chassis applications.

Recommended Products Summary

PIC18F46K22-I/ML Lower-power upgrade with 64 KB Flash, same QFN-44 footprint Used in: Industrial Sensor Signal Conditioning, Battery-Powered Remote Sensor Node MAX31855 Thermocouple-to-digital front-end companion Used in: Industrial Sensor Signal Conditioning PIC18F4420-I/ML Drop-in with 32 KB Flash for richer protocol stacks, same QFN-44 Used in: HVAC Thermostat Control, Industrial User Interface / HMI Panel MCP9700 Analog temperature sensor front-end Used in: HVAC Thermostat Control MCP1640 Boost regulator companion for single-cell Li-Ion supply Used in: Battery-Powered Remote Sensor Node MCP8024 3-phase BLDC gate driver companion Used in: Small Motor Control (BLDC/PMSM) PIC18F4331-I/ML Microchip Technology Used in: Small Motor Control (BLDC/PMSM) MCP23017 I/O expander for additional buttons/LEDs via I2C Used in: Industrial User Interface / HMI Panel MCP2551 CAN bus transceiver companion Used in: Automotive Auxiliary Body Controller MCP2025 LIN bus transceiver with integrated voltage regulator Used in: Automotive Auxiliary Body Controller
What is the maximum operating frequency of PIC18F4410-E/ML?
The PIC18F4410-E/ML operates at a maximum CPU clock of 25 MHz with an external oscillator input rating of 40 MHz as listed by Microchip's datasheet title (28/40/44-Pin High Performance, Enhanced FLASH Microcontrollers). At 5 V supply this yields roughly 10 MIPS of throughput, sufficient for sensor-conditioning, low-speed motor control, and human-machine interface firmware typical of industrial embedded designs.
How much Flash program memory does the PIC18F4410-E/ML have?
The PIC18F4410-E/ML provides 16 KB of Flash program memory organized as 8K x 16 instructions. According to the DigiKey listing, the memory is FLASH, supporting self-programming and ICSP. The Flash is rated for thousands of erase/write cycles, making the part suitable for field-updatable products such as industrial controllers and consumer appliances.
What is the operating temperature range of PIC18F4410-E/ML?
The 'E' suffix indicates an extended industrial temperature grade of -40C to +125C, as confirmed by Microchip's ordering nomenclature and DigiKey product information. This range allows deployment in under-hood automotive, outdoor industrial, and HVAC environments. For lower-cost commercial-grade designs the equivalent 'I' (industrial -40C to +85C) variant may be selected instead.
What package does PIC18F4410-E/ML use and what are the dimensions?
The PIC18F4410-E/ML uses Microchip's ML suffix, a 44-lead QFN (Quad Flat No-lead) measuring 8x8 mm with an exposed thermal pad. The exposed pad must be soldered to the PCB ground plane for electrical and thermal performance; failing to solder the EP can cause incorrect ADC readings and overheating. QFN packages require PCB land pattern designs per IPC-7351.
Does PIC18F4410-E/ML have an ADC?
Yes, the PIC18F4410 includes a 10-bit successive-approximation ADC with up to 13 analog input channels. According to Microchip's product family documentation, this ADC can be paired with the nanoWatt sleep modes for low-duty-cycle battery sensing. Conversion rates and acquisition time are software-configurable, allowing trade-offs between resolution and sampling speed.
What is the difference between PIC18F4410-E/ML and PIC18F4410-I/ML?
The difference is operating temperature grade: the 'E' suffix denotes -40C to +125C (extended), while the 'I' suffix denotes -40C to +85C (industrial). Both share the same QFN-44 ML package, pinout, Flash size, and electrical specifications. Choose 'E' for automotive under-hood or outdoor industrial deployments, and 'I' for cost-sensitive commercial or indoor applications.
Where can I buy PIC18F4410-E/ML online and what is the lead time?
As of 2026-09-27, the PIC18F4410-E/ML is listed in stock at DigiKey, Mouser, and Octopart-aggregated distributors. Pricing starts at approximately $6.20 for qty-1 and decreases to about $3.93 at qty-1000. Lead time is generally 2-4 weeks from franchised distributors, though some catalog houses may have obsolete/EOL stock - confirm lifecycle status before placing NCNR orders.
How much does PIC18F4410-E/ML cost at qty-1000?
As of 2026-09-27, the qty-1000 price for PIC18F4410-E/ML is approximately $3.93 per unit (DigiKey/Octopart aggregated). Volume discounts typically reach 35-45% off the qty-1 unit price at this quantity. Note that pricing fluctuates with silicon availability; request a firm quote for production schedules beyond 6 months.
Is PIC18F4410-E/ML in stock at major distributors?
Per the verified web data on 2026-09-27, PIC18F4410-E/ML shows distributor stock at DigiKey and Mouser with current availability. Stock levels fluctuate, so verify with the distributor's live inventory API before placing production orders. The Microchip cross-reference search tool can also identify PIC18F-family drop-in alternatives if shortages arise.
What is the best drop-in replacement for PIC18F4410-E/ML?
The best drop-in replacements are same-family PIC18F variants in the same 44-pin QFN (ML) footprint, such as PIC18F4410-I/ML (different temperature grade) or PIC18F4420-I/ML (32 KB Flash, same package). Microchip's cross-reference search at microchip.com/en-us/cross-reference-search provides parametric alternatives. The QFN-44 (8x8) footprint is shared across the PIC18F44xx family, enabling a 1-for-1 PCB swap.
PIC18F4410-E/ML vs PIC18F4420-I/ML - which is better for sensor-data logging?
For sensor-data logging, PIC18F4420-I/ML is preferable because it doubles Flash to 32 KB versus 16 KB on the PIC18F4410-E/ML, providing more headroom for data buffers, lookup tables, and protocol stacks. Both share the same QFN-44 ML footprint. The trade-off is the 'I' (-40C to +85C) temperature grade on the 4420 versus 'E' (-40C to +125C) on the 4410; if your enclosure exceeds 85C, stay with the 4410-E.
What is the difference between PIC18F4410-E/ML and PIC18F4320-E/ML?
Both PIC18F4410-E/ML and PIC18F4320-E/ML use the QFN-44 (8x8 mm) ML package with pin-compatible footprints. The PIC18F4410 has 16 KB Flash and 768 bytes RAM, while the PIC18F4320 has only 8 KB Flash and 256 bytes RAM. For designs needing headroom choose 4410; for low-cost minimal-firmware applications the 4320 saves silicon cost. Both share the same nanoWatt power-saving architecture and 10-bit ADC.
When should I choose PIC18F4410-E/ML over PIC18F46K22-I/ML?
Choose PIC18F4410-E/ML when you need the legacy PIC18F 'classic' core with 5 V tolerance for industrial noise environments, and the extended -40C to +125C temperature grade. Choose PIC18F46K22-I/ML when you need lower power consumption (3.6 V operation, deeper sleep modes), more Flash (64 KB), and richer peripherals. Both use QFN-44 packages, but the 46K22 is a different silicon revision so firmware porting is required.
Where can I download the PIC18F4410-E/ML datasheet PDF?
The official Microchip datasheet for PIC18F4410 (Device Document 39631, ~6 MB) can be downloaded from Microchip's product page at microchip.com/en-us/product/PIC18F4410, or directly via alldatasheet.com. The 376-page document covers DC/AC electrical characteristics, the 10-bit ADC, EUSART, MSSP, and instruction-set architecture. Refer to the '28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology' family datasheet for full design details.
Where can I find the PIC18F4410-E/ML pinout?
The PIC18F4410-E/ML pinout for the 44-pin QFN package is documented in the official Microchip datasheet Device Document 39631 and the PIC18F4410 family reference manual. Pin 1 is identified by the standard QFN dot marker on the top side of the package. The QFN-44 (8x8 mm) variant (ML suffix) is pin-compatible with the 40-pin PDIP and 44-pin TQFP variants, allowing the same firmware and schematic across packaging options.
What is the quiescent current of PIC18F4410-E/ML in sleep mode?
The PIC18F4410-E/ML nanoWatt technology typically achieves sub-microamp quiescent current in Sleep mode (typically <1 uA at 3 V with watchdog timer disabled) and tens of microamps in Idle mode. According to Microchip's PIC18F44xx family datasheet section 28 (Electrical Characteristics), specific figures depend on the chosen oscillator and peripheral configuration; consult the datasheet's DC characteristics table for your exact use case.

Engineering reference data for PIC18F4410-E/ML — comparison, design guidance, and compliance information.

Selection Guide

Choose the PIC18F4410-E/ML when you need an 8-bit PIC18 with the extended -40C to +125C temperature grade in a compact 44-pin QFN (8x8 mm) package, with 16 KB Flash and 768 bytes RAM sufficient for sensor-conditioning, HVAC thermostat, motor control, or industrial HMI firmware at moderate cost. Choose the PIC18F4410-I/ML (industrial grade, same footprint) if your product operates only between -40C and +85C and you want slightly lower cost. Choose the PIC18F4420-I/ML if you need double the Flash (32 KB) for richer protocol stacks or GUI libraries. Choose the PIC18F4320-E/ML for cost-sensitive applications needing only 8 KB Flash. Choose the PIC18F4331-I/ML when dedicated motor-control PWM peripherals matter most. Choose the PIC18F46K22-I/ML when you need the modern K-series core with much lower power consumption and broader peripheral set, accepting firmware porting effort.

Comparison with Alternatives

Parameter This Product PIC18F4410-I/ML PIC18F4420-I/ML PIC18F4320-E/ML PIC18F4331-I/ML PIC18F46K22-I/ML
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Package QFN-44 (8x8 mm) QFN-44 (8x8 mm) - same QFN-44 (8x8 mm) - same QFN-44 (8x8 mm) - same QFN-44 (8x8 mm) - same QFN-44 (8x8 mm) - same
Program Memory (Flash) 16 KB 16 KB 32 KB 8 KB 8 KB 64 KB
Data Memory (RAM) 768 bytes 768 bytes 768 bytes 256 bytes 256 bytes 3896 bytes
Maximum CPU Clock 25 MHz 25 MHz 25 MHz 25 MHz 25 MHz 64 MHz
Operating Temperature -40C to +125C -40C to +85C -40C to +85C -40C to +125C -40C to +85C -40C to +85C
Supply Voltage 4.2 V to 5.5 V 4.2 V to 5.5 V 4.2 V to 5.5 V 4.2 V to 5.5 V 4.2 V to 5.5 V 1.8 V to 5.5 V
I/O Pins 36 36 36 36 36 36
ADC 10-bit, 13 ch 10-bit, 13 ch 10-bit, 13 ch 10-bit, 13 ch 10-bit, 9 ch 10-bit, 28 ch

Key Differentiators

  • Extended industrial temperature grade (-40C to +125C) (vs PIC18F4410-I/ML)
  • Balanced Flash/RAM ratio for mid-complexity firmware (vs PIC18F4320-E/ML)
  • Lower-power operation in next-generation K-series (vs PIC18F46K22-I/ML)

Design Notes

The PIC18F4410-E/ML 'ML' (QFN-44 8x8 mm) package requires the central exposed pad (EP) to be soldered to a substantial PCB copper pour. Recommended area: at least 100 mm2 of 1 oz copper on top and bottom layers tied together with thermal vias (8-16 vias, 0.3 mm drill). Without proper EP soldering, junction-to-ambient thermal resistance rises dramatically, causing ADC drift and potential thermal shutdown at high ambient temperatures. Per IPC-7351, the QFN-44 land pattern must use the recommended solder mask defined (SMD) pads.

Estimated from the typical 25 MHz PIC18F core: at 5 V supply and 25 MHz clock, the PIC18F4410-E/ML draws roughly 10-15 mA active and sub-1 uA in Sleep. Place a 100 nF decoupling capacitor within 3 mm of each VDD pin (the part has multiple VDD/VSS pairs on the QFN-44 package) plus a single 10 uF bulk capacitor on the supply rail. For ADC accuracy, isolate the AVdd/AVss pair with a ferrite bead and additional 100 nF decoupling; failure to do so causes ADC INL errors of 2-4 LSB.

Configuration words must be set correctly: the oscillator configuration (HS/XT/RC), watchdog timer enable state, brown-out reset voltage, and code-protection bits must all match the application requirements before code is locked. Programming via ICSP requires the PGC/PGD pins (RB6/RB7) to be accessible and not permanently driven by external circuitry. Failure to disable the watchdog timer in firmware causes unexpected resets during long firmware loops. Always set unused I/O pins to outputs to minimize Sleep current.

Route the OSC1/OSC2 crystal traces with a grounded guard ring and keep them as short as possible (<10 mm). For high-speed crystals (>20 MHz), use a 4-layer PCB with a dedicated ground plane under the oscillator area. The 10-bit ADC inputs should be routed away from switching signals (PWM outputs, EUSART lines) and shielded with ground traces to minimize crosstalk. For accurate ADC readings at low source impedances (<=2 kohm), add an external op-amp buffer; the internal ADC sample-and-hold requires adequate drive strength.

Compliance Information

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Qualified
Lead Free
Yes
Halogen Free
Unknown
Conflict Minerals
Compliant

RoHS and lead-free status per Microchip product page; not AEC-Q100 explicitly qualified (use automotive-graded PIC18F variants for AEC-Q100 requirements). Confirm halogen-free status with Microchip if required.

Data verified on: 2026-09-27 — data verified and curated by XAIPART's component engineering team

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Related Components & Terms

Microchip Technology PIC18F4410 PIC18F4410-E/ML PIC18F4410-I/ML PIC18F4420-I/ML PIC18F4320-E/ML PIC18F4331-I/ML PIC18F46K22-I/ML PIC microcontroller 8-bit MCU Harvard architecture RISC core nanoWatt technology QFN-44 10-bit ADC EUSART MSSP ICSP Flash memory RoHS AEC-Q100 IPC-7351 surface mount
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