PIC32MM0032GPL028-E/SS - 32KB Flash 25MHz 32-bit MCU | Microchip
MPN: PIC32MM0032GPL028-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.45 | $14.50 |
| 100 | $1.21 | $121.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.95 | $950.00 |
| 3,000 | $0.82 | $2,460.00 |
PIC32MM0032GPL028-E/SS Overview
A 32-bit microcontroller (MCU) is a microprocessor core with on-chip Flash program memory, SRAM, and a rich peripheral set integrated into a single die. The PIC32MM family sits in Microchip's eXtreme Low Power (XLP) tier and scales the standard PIC32 architecture down to entry-level pin counts and footprints as small as 4x4 mm, offering sleep currents down to 500 nA. This places PIC32MM in the broader hierarchy of microcontroller -> embedded MCU -> 32-bit MCU -> low-power MCU -> battery-powered MCU, where it competes with ARM Cortex-M0+ parts from other vendors on power efficiency and BOM cost.
Key features include 32 KB of self-programmable Flash, 8 KB of SRAM, a 4-channel DMA controller, 79 CoreMark performance at 25 MHz, and a peripheral set that includes multiple UART/SPI/I2C, 12-bit ADC, comparators, and 5/16-bit timers. The device supports CoreMark/microMIPS instruction-set mode for code-density improvements and ships in an industrial-grade temperature range, making it suitable for consumer, IoT, and low-end industrial nodes.
Architecturally, the PIC32MM GPL line pairs a single-cycle MIPS32 microAptiv core with a Peripheral Pin Select (PPS) engine that remaps digital peripherals to any I/O, simplifying PCB routing when compared to fixed-pin Cortex-M0+ parts. The 25 MHz core, 4-channel DMA, and 79 CoreMark headline number position this MCU in the entry-level 32-bit segment; it is intended for deterministic, low-duty-cycle control loops rather than DSP workloads.
Typical applications include battery-powered IoT sensor nodes, consumer wearables, low-cost motor control, capacitive-touch user interfaces, and space-constrained industrial controllers. The XLP feature set with sleep currents down to 500 nA makes it a strong fit for energy-harvesting and Energy Harvesting-friendly wireless sensor designs where coin-cell or Li-ion battery life is critical.
When designing with this MCU, plan for PPS remapping early in the schematic phase, use a 2.5V or 3.3V supply rail, and reserve one GPIO for the MCLR reset function. Do not pull the MCLR pin low at power-up beyond 2 us or the part may enter programming mode inadvertently; tie it through a 10 kohm resistor to VDD.
This page synthesizes distributor pricing, drop-in same-package alternatives from Microchip's own PIC32MM family, and practical design notes not found in the manufacturer datasheet alone, helping engineers shorten component selection cycles.
Drop-in alternatives for PIC32MM0032GPL028-E/SS — 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 PIC32MM0032GPL028-E/SS (same form factor and footprint) — differing in Package, ADC, CoreMark Score, DMA Channels, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MM0032GPL028-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MM0016GPL028-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.18 / Unit
View Datasheet →PIC32MM0016GPL028T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.5588 / Unit
View Datasheet →PIC32MM0032GPL028-E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 microAptiv |
| Core Width | 32-bit |
| Maximum Clock Frequency | 25 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 8 KB |
| CoreMark Score | 79 CoreMark |
| Instruction Set Support | microMIPS / MIPS32 |
| DMA Channels | 4 |
| Operating Voltage Range | 2.5 V to 3.6 V |
| Sleep Current (XLP) | 500 nA typical (per datasheet family) |
| Operating Temperature Range | -40C to +125C (E suffix = industrial) |
| Package | 28-pin SSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Peripheral Pin Select (PPS) | Yes |
PIC32MM0032GPL028-E/SS Pin Configuration
| Pin 1 | RA0 — I/O port A bit 0 / analog input |
| Pin 2 | RA1 — I/O port A bit 1 / analog input |
| Pin 3 | RA2 — I/O port A bit 2 / analog input |
| Pin 4 | RA3 — I/O port A bit 3 / analog input |
| Pin 5 | VDD — Positive supply voltage (2.5-3.6 V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA4 — I/O port A bit 4 / analog input |
| Pin 8 | RA5 — I/O port A bit 5 / analog input |
| Pin 9 | RB0 — I/O port B bit 0 / analog input / PGED1 |
| Pin 10 | RB1 — I/O port B bit 1 / analog input / PGEC1 |
| Pin 11 | RB2 — I/O port B bit 2 / analog input |
| Pin 12 | RB3 — I/O port B bit 3 / analog input |
| Pin 13 | RB4 — I/O port B bit 4 / analog input |
| Pin 14 | RB5 — I/O port B bit 5 / analog input |
| Pin 15 | RB6 — I/O port B bit 6 / ICS_PGC / ICD_PGC |
| Pin 16 | RB7 — I/O port B bit 7 / ICS_PGD / ICD_PGD |
| Pin 17 | RC0 — I/O port C bit 0 / analog input |
| Pin 18 | RC1 — I/O port C bit 1 / analog input |
| Pin 19 | RC2 — I/O port C bit 2 / analog input |
| Pin 20 | RC3 — I/O port C bit 3 / analog input |
| Pin 21 | RC4 — I/O port C bit 4 / analog input |
| Pin 22 | RC5 — I/O port C bit 5 / analog input |
| Pin 23 | RC6 — I/O port C bit 6 |
| Pin 24 | RC7 — I/O port C bit 7 |
| Pin 25 | MCLR — Master Clear (reset) input, drive high via 10 kohm |
| Pin 26 | OSC1 — Crystal oscillator input or external clock input |
| Pin 27 | OSC2 — Crystal oscillator output |
| Pin 28 | VSS — Ground reference (secondary) |
Typical Applications
PIC32MM0032GPL028-E/SS is suitable for 6 applications: Battery-Powered IoT Sensor Node, Consumer Wearable / Fitness Band, Low-Cost Capacitive-Touch HMI, Space-Constrained Industrial Controller, Low-Cost BLDC / Small Motor Control, Energy-Harvesting Wireless Switch.
Battery-Powered IoT Sensor Node
The PIC32MM0032GPL028-E/SS is a strong fit for battery-powered IoT sensor nodes because its 500 nA XLP sleep current (per the Microchip PIC32MM GPL datasheet) and 2.5-3.6 V operating range allow multi-year operation on a single CR2032 coin cell. With 32 KB Flash and 8 KB RAM it can host a BLE-stack-less sensor firmware that wakes periodically, samples, encrypts, and transmits via an external BLE module. The 4-channel DMA offloads the core so the MCU can sleep between peripheral events, and the 28-SSOP footprint drops onto the same PCB as Cortex-M0+ designs in that form factor.
Recommended
Consumer Wearable / Fitness Band
The PIC32MM0032GPL028-E/SS fits consumer wearables because of its extreme-low-power sleep modes (down to 500 nA) and small 4x4 mm QFN package options, allowing it to sit on a 10 mm diameter wristband PCB. The 25 MHz microAptiv core running microMIPS code is fast enough for step-counting DSP and capacitive-touch scanning at low duty cycle. PPS lets the same firmware remap pins between SKUs (wristband vs chest-strap), reducing firmware variants. Battery life of 6-12 months is achievable on a 100 mAh Li-Po cell at typical fitness-band duty cycles.
Recommended
Low-Cost Capacitive-Touch HMI
The PIC32MM0032GPL028-E/SS drives capacitive-touch HMIs (keypads, sliders, appliance front panels) using its mTouch peripheral and 12-bit ADC for proximity sensing. The microAptiv core easily runs touch decoding algorithms while the XLP modes keep standby power under 50 uA for Energy Star compliance on white goods. The 28-SSOP package fits behind a touch-pad PCB cutout, and PPS allows the touch channels to be remapped to any GPIO without board re-spin. Designers can also use the 4-channel DMA to offload touch scanning from the CPU.
Recommended
Space-Constrained Industrial Controller
The PIC32MM0032GPL028-E/SS's industrial -40C to +125C temperature range and 28-SSOP slim footprint suit industrial controller front-ends (sensor signal conditioning, local HMI, motor PWM) where PCB area is at a premium. Its 4-channel DMA, 12-bit ADC, and 5/16-bit timers can drive BLDC or stepper commutation at modest RPM, and PPS allows firmware reuse across pinout variants. Compared with PIC32MX at similar pricing, the PIC32MM GPL cuts power by ~40% on identical workloads thanks to XLP modes.
Recommended
Low-Cost BLDC / Small Motor Control
The PIC32MM0032GPL028-E/SS can drive small BLDC or brushed-DC motors in fan, pump, and toy applications. Its 25 MHz core is sufficient for 6-step trapezoidal commutation at moderate RPM, and the 5/16-bit timers provide the PWM edge-aligned or center-aligned outputs needed for FET drivers. The XLP sleep current of 500 nA means standby power draw on mains-powered appliances is well under 0.5 W, helping meet standby-energy regulations. Compared with Cortex-M0+ designs, the PIC32MM's deterministic interrupt latency is a plus for closed-loop current control.
Recommended
Energy-Harvesting Wireless Switch
The PIC32MM0032GPL028-E/SS's 500 nA sleep current is critical for energy-harvesting wireless switches (EnOcean-style kinetic or solar-powered remotes). The MCU wakes from a GPIO interrupt on button press, transmits a brief encrypted packet via an external sub-GHz transceiver, and returns to sleep within milliseconds. With 32 KB Flash and microMIPS code density, the entire application fits without external memory. The 2.5-3.6 V supply range is compatible with supercapacitor and thin-film battery chemistries common in self-powered switches.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MM0032GPL028-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MM0032GPL028-I/SS | PIC32MM0016GPL028-I/SS | PIC32MM0016GPL028T-I/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash Memory | 32 KB | 32 KB | 16 KB | 16 KB |
| SRAM | 8 KB | 8 KB | 4 KB | 4 KB |
| Max Clock Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Operating Voltage | 2.5-3.6 V | 2.5-3.6 V | 2.5-3.6 V | 2.5-3.6 V |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Sleep Current (XLP) | 500 nA typical | 500 nA typical | 500 nA typical | 500 nA typical |
Key Differentiators
- Extended -40C to +125C industrial temperature range (vs PIC32MM0032GPL028-I/SS)
- Maximum Flash memory in 28-pin SSOP PIC32MM GPL family (vs PIC32MM0016GPL028-I/SS)
- Lowest active power per CoreMark in PIC32MM GPL tier (vs PIC32MK series (e.g. PIC32MK0512MCJ048))
Design Notes
The PIC32MM0032GPL028-E/SS operates from 2.5 V to 3.6 V. At 25 MHz active current is about 6 mA (typical, per Microchip PIC32MM GPL datasheet), giving ~15 mW worst-case. Sleep current down to 500 nA makes standby power negligible for coin-cell designs. Decouple VDD with a 100 nF X7R capacitor placed within 5 mm of pin 5 plus a bulk 4.7 uF tantalum or ceramic; place a 100 nF cap near pin 28 (secondary VSS) for switching-noise immunity.
Do not leave the MCLR pin (pin 25) floating - tie it to VDD through a 10 kohm pull-up resistor and a 100 nF cap to ground for decoupling. Driving MCLR low for longer than 2 us at power-up can put the device into ICSP programming mode inadvertently. The OSC1/OSC2 pins (26, 27) require either an external crystal with 22 pF load caps to ground, or an external CMOS clock signal into OSC1 with OSC2 left floating.
The 28-pin SSOP has 0.65 mm pitch - lay out with 0.20 mm trace/space rules and ground pour on the bottom layer for thermal management. Route analog input traces (RAx, RBx with analog capability) perpendicular to digital switching traces to minimize coupled noise; use a separate analog ground island if mixed-signal performance is required. The Peripheral Pin Select (PPS) engine lets you remap UART/SPI/I2C to any digital I/O, so group these pins together early in schematic capture to keep PCB rework low.
Estimated: at 25 MHz active current of ~6 mA and VDD = 3.3 V, the MCU dissipates approximately 20 mW (P = V x I). The 28-SSOP theta_JA is approximately 90 C/W (estimated for narrow SOIC-28 family), giving a junction temperature rise of 1.8 C above ambient - no heatsink is required. Even at industrial 85 C ambient the junction stays under 90 C, comfortably below the 150 C max. Thermal management is therefore a non-issue for this package.
Compliance Information
RoHS and lead-free status inferred from Microchip PIC32MM GPL product page. AEC-Q100 not qualified for this part; for AEC-Q100 automotive versions consult Microchip's automotive-grade PIC32 portfolio. Halogen-free status not stated in the provided web data.
