PIC32MX110F016B-I/ML - 32-bit 40MHz MCU, 16KB Flash | Microchip
MPN: PIC32MX110F016B-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.27 | $227.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC32MX110F016B-I/ML Overview
A microcontroller (MCU) is a programmable system-on-a-chip that integrates a CPU core, memory, peripherals, and I/O into a single device. PIC32MX MCUs sit in the broader hierarchy of embedded microcontrollers -> 32-bit MCUs -> MIPS-based MCUs -> Microchip PIC32 family -> semiconductor IC. They are designed to deliver deterministic real-time control with higher throughput than 8/16-bit parts while retaining the peripheral-rich architecture familiar to PIC users.
Key features of the PIC32MX110F016B include Peripheral Pin Select (PPS) for flexible pin assignment, two I2S/SPI modules for codec and serial connectivity, a Parallel Master Port (PMP) for graphics interfaces, a Charge Time Measurement Unit (CTMU) supporting mTouch capacitive touch buttons/sliders, four DMA channels, and a 10-bit ADC capable of up to 1 Msps. The MIPS32 M4K core delivers 1.56 DMIPS/MHz and executes most instructions in a single cycle, making it suitable for control loops and modest DSP-style signal processing.
Typical applications include consumer electronics with graphical displays, capacitive touch human-machine interfaces, USB/audio accessories, sensor hubs, industrial control nodes, and low-cost IoT endpoints that need 32-bit performance without the cost of Cortex-M parts. The 28-QFN footprint suits space-constrained PCB designs such as wearable bands and remote-control modules.
When designing with the PIC32MX110F016B-I/ML, ensure the exposed pad is soldered to a sufficient copper pour for thermal and electrical grounding, and respect the supply-voltage range of 2.3 V to 3.6 V across all operating modes including programming. Use MPLAB X IDE with XC32 compiler for development; ICD programming requires dedicated PGECx/PGEDx pin pairs and decoupling on every VDD pin.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes curated for engineers selecting a 28-QFN 32-bit MCU, going beyond the manufacturer datasheet alone.
Drop-in alternatives for PIC32MX110F016B-I/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 PIC32MX110F016B-I/ML (same form factor and footprint) — differing in Package, ADC, USB, Operating Temperature, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX120F016B-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX130F016B-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F016B-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F256B-I/ML
✅ Drop-In✓ In Stock
$3.25 / Unit
View Datasheet →PIC32MX210F016B-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC32MX110F016C-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX110F016B-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Bit Width | 32-bit |
| Maximum CPU Clock | 40 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data Memory (SRAM) | 4 KB |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| I/O Pins | 21 |
| DMA Channels | 4 |
| ADC | 10-bit, up to 1 Msps, 13 channels |
| Timers | Five 16-bit and up to two 32-bit timers |
| Communication | 2x I2S/SPI, I2C, UART, PMP |
| Special Features | Peripheral Pin Select (PPS), CTMU (mTouch), PMP |
| Operating Temperature | -40C to +105C (industrial) |
| Package | 28-pin QFN (6x6 mm) with exposed thermal pad (ML) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Peripherals Summary | USB, RTCC, Comparators, PMP, CTMU |
PIC32MX110F016B-I/ML Pin Configuration
| Pin 1 | RPB0/AN0/CN2/RB0 — Remappable I/O / ADC analog input / interrupt change notification |
| Pin 2 | RPB1/AN1/CN3/RB1 — Remappable I/O / ADC analog input |
| Pin 3 | RPB2/AN2/CN4/RB2 — Remappable I/O / ADC analog input |
| Pin 4 | RPB3/AN3/CN5/RB3 — Remappable I/O / ADC analog input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RPA0/TMS/RA0 — Remappable I/O / JTAG TMS |
| Pin 7 | RPA1/TCK/RA1 — Remappable I/O / JTAG TCK |
| Pin 8 | RPB4/AN4/CN6/RB4 — Remappable I/O / ADC analog input |
| Pin 9 | RPB5/AN5/CN7/RB5 — Remappable I/O / ADC analog input |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply (2.3-3.6 V) |
| Pin 12 | RPB6/OC1/RB6 — Remappable I/O / Output Compare 1 |
| Pin 13 | RPB7/OC2/RB7 — Remappable I/O / Output Compare 2 |
| Pin 14 | RPB8/OC3/RB8 — Remappable I/O / Output Compare 3 |
| Pin 15 | RPB9/OC4/RB9 — Remappable I/O / Output Compare 4 |
| Pin 16 | VSS — Ground reference |
| Pin 17 | VDD — Positive supply (2.3-3.6 V) |
| Pin 18 | RPC6/PMA1/RC6 — Remappable I/O / Parallel Master Port address |
| Pin 19 | RPC7/PMA0/RC7 — Remappable I/O / Parallel Master Port address |
| Pin 20 | RPC8/PMA5/RC8 — Remappable I/O / PMP address |
| Pin 21 | RPC9/PMA6/RC9 — Remappable I/O / PMP address |
| Pin 22 | VDD — Positive supply (2.3-3.6 V) |
| Pin 23 | VSS — Ground reference |
| Pin 24 | RPC1/SDA1/RC1 — Remappable I/O / I2C SDA1 (PPS-mapped) |
| Pin 25 | RPC2/SCL1/RC2 — Remappable I/O / I2C SCL1 (PPS-mapped) |
| Pin 26 | RPC3/SCL2/RC3 — Remappable I/O / I2C SCL2 |
| Pin 27 | RPC4/SDA2/RC4 — Remappable I/O / I2C SDA2 |
| Pin 28 | RA2/OSC1/CLKI — Crystal oscillator input / external clock |
Typical Applications
PIC32MX110F016B-I/ML is suitable for 7 applications: Capacitive Touch HMI Panels, Consumer Audio Accessories, Industrial Sensor Hubs and IoT Edge Nodes, USB Human Interface Devices (HID), Small Graphic LCD Interfaces via PMP, Battery-Powered Remote Control Modules, Motor Control and PWM Drive.
Capacitive Touch HMI Panels
The PIC32MX110F016B-I/ML's integrated CTMU (Charge Time Measurement Unit) supports Microchip's mTouch capacitive-touch firmware for buttons, sliders, and proximity sensors, eliminating the need for an external touch controller IC. With 21 GPIO and 4 DMA channels, the device can scan multi-key touch panels while dedicating CPU cycles to HMI logic. The 40 MHz MIPS32 M4K core provides the deterministic timing needed for reliable touch acquisition, and the 28-QFN footprint suits compact front-panel PCBs. Typical design pairs the MCU with a segmented LCD driver and an LED backlight PWM channel for a complete user interface.
Recommended
Consumer Audio Accessories
Two I2S/SPI interfaces and a Parallel Master Port (PMP) let the PIC32MX110F016B-I/ML drive audio codecs and small graphic LCDs in speaker docks, headphone amplifiers, and Bluetooth audio remote controls. The MIPS32 M4K at 40 MHz delivers ~62 DMIPS, sufficient for sample-rate conversion, basic DSP effects, and protocol handling over UART/I2C. The 4 KB SRAM is enough for small audio buffers when paired with an external CODEC that handles its own memory. Designers benefit from MPLAB X IDE support and the PIC32's mature peripheral libraries for I2S configuration.
Recommended
Industrial Sensor Hubs and IoT Edge Nodes
With a 10-bit ADC capable of 1 Msps across 13 channels, the PIC32MX110F016B-I/ML can aggregate multiple analog sensors in industrial monitoring nodes without external ADC ICs. The 32-bit core runs Modbus/RTU, CAN-friendly firmware, and lightweight TCP/IP stacks via the UART and I2C peripherals, while 4 DMA channels offload data movement to keep the CPU free for control loops. Industrial -40C to +105C temperature rating suits factory floor deployment. PCB layout uses the 6x6 mm QFN with a generous ground pour for noise immunity in electrically noisy cabinets.
Recommended
USB Human Interface Devices (HID)
Although the PIC32MX110F016B base variant lacks USB-OTG, the pin-compatible PIC32MX130F/150F/170F siblings add full-speed USB and are drop-in replacements on the same 28-QFN (ML) footprint. This makes the 28-QFN (ML) land pattern ideal for designs that need a USB-less baseline today with a USB upgrade path tomorrow. The 40 MHz core handles HID class drivers and interrupt latency well. Using the same PCB for HID-only and HID+USB variants reduces tooling cost.
Recommended
Small Graphic LCD Interfaces via PMP
The Parallel Master Port (PMP) peripheral drives small TFT or STN graphic displays directly from the PIC32MX110F016B-I/ML, eliminating the need for an external display controller in cost-sensitive products. PMP can address up to 33 KB of external memory-mapped space, suitable for monochrome graphical menus. Combined with 4 KB SRAM for frame buffering and the 32-bit MIPS core for text rendering, this delivers a usable UI subsystem under USD 3 in BOM. Industrial temperature grade suits outdoor or in-vehicle display modules.
Recommended
Battery-Powered Remote Control Modules
Operating from 2.3 V to 3.6 V and consuming less than 0.5 mA/MHz active, the PIC32MX110F016B-I/ML is well suited for battery-powered remote controls, security keyfobs, and RF sensor end-nodes. The 28-QFN footprint fits in compact enclosures, and Sleep/Idle modes extend battery life when paired with RTCC wake events. The CTMU can also be repurposed for capacitive proximity wake-up. Code size stays modest thanks to the MIPS efficiency of 1.56 DMIPS/MHz, leaving room for application code in 16 KB Flash.
Recommended
Motor Control and PWM Drive
Five 16-bit timers plus two 32-bit timers give the PIC32MX110F016B-I/ML the PWM channels needed for brushed DC, stepper, or small BLDC motor control in appliance and hobby applications. The 40 MHz MIPS core executes PID loops at high update rates, while the 10-bit ADC samples back-EMF or current-sense signals from up to 13 channels. Peripheral Pin Select (PPS) makes it easy to route PWM outputs to any available GPIO. Designers typically pair the MCU with gate drivers and a small power stage on the same PCB.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX110F016B-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX120F016B-I/ML | PIC32MX130F016B-I/ML | PIC32MX150F016B-I/ML | PIC32MX170F256B-I/ML | PIC32MX210F016B-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm, ML) | 28-QFN (6x6 mm, ML) - same | 28-QFN (6x6 mm, ML) - same | 28-QFN (6x6 mm, ML) - same | 28-QFN (6x6 mm, ML) - same | 28-QFN (6x6 mm, ML) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 16 KB | 32 KB | 32 KB | 32 KB | 256 KB | 16 KB |
| SRAM | 4 KB | 8 KB | 8 KB | 8 KB | 64 KB | 4 KB |
| Maximum Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| USB-OTG | No | No | Yes | Yes | Yes | No |
| Operating Temperature | -40C to +105C (I grade) | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Key Differentiators
- Integrated CTMU for capacitive touch without external IC (vs PIC24HJ64GP504-I/ML)
- Mature MIPS32 M4K ecosystem with PMP for direct LCD drive (vs PIC32MM0064GPL028-I/ML)
- Drop-in upgrade path to USB and higher memory on same footprint (vs PIC32MX110F016C-I/ML)
- Cost-optimized 32-bit 28-QFN MCU under USD 3 at qty-1 (vs PIC32MK1024GPD064-I/PT)
Design Notes
The 28-QFN (ML) package has an exposed thermal pad that must be soldered to a ground copper pour with multiple thermal vias for heat dissipation. The PIC32MX110F016B-I/ML active current is below 20 mA at 40 MHz, so self-heating is modest, but the exposed pad also serves as the primary electrical ground reference. Recommended copper area is at least 100 mm squared on the top layer with 4-8 vias to the internal ground plane. Without proper soldering to the e-pad, latch-up risk and EMI performance both degrade.
Place one 0.1 uF ceramic decoupling capacitor within 3 mm of every VDD pin (pins 11, 17, 22) plus one bulk 10 uF tantalum or ceramic capacitor near the package. Keep the crystal oscillator traces short and symmetric with a guard ring to GND. Route PGECx/PGEDx programming pins to a dedicated header or test pad for in-circuit programming and debugging. Use the MPLAB ICD footprint reference from Microchip's development board schematics as a starting layout.
Do not exceed 3.6 V on VDD; the part is permanently damaged above ~4 V. The PGECx/PGEDx pairs must be used as matched pairs - if PGEC2 is the ICSP clock then ICSPDAT must be on PGED2. Configuration bits must be set correctly for oscillator selection, watchdog, and code protection, otherwise the device may appear 'bricked'. Avoid routing PWM outputs across analog input traces to minimize ADC crosstalk; the 10-bit ADC is sensitive to digital switching noise within 100 ns of sampling.
The 10-bit 1 Msps ADC benefits from a quiet analog supply. Use a ferrite bead or RC filter to isolate AVDD from digital VDD when noise is a concern. The CTMU operates by charging a known current into a touch capacitor; for accurate touch detection, ensure the touch sensor traces are guarded with a driven shield signal or proper grounding. PPS reassigns peripheral functions to GPIO, but reassignments on pins currently driving high-current loads can cause glitches during runtime reconfiguration.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40C to +105C temperature grade. Not AEC-Q100 qualified; for AEC-Q100 automotive PIC32 parts look at PIC32MX1xx-Q1 variants.
