PIC32MM0032GPL028T-I/SS - 25MHz 32KB Flash MCU | Microchip
MPN: PIC32MM0032GPL028T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.89 | $945.00 |
| 1,000 | $1.65 | $1,650.00 |
PIC32MM0032GPL028T-I/SS Overview
The PIC32MM GPL family is Microchip's lowest-power and most cost-effective 32-bit PIC32 microcontroller line. It bridges the gap between legacy 16-bit PIC MCUs and full-performance 32-bit PIC32MX parts by offering a compact core, peripheral-rich I/O, and aggressive power management. Within the broader taxonomy, this part is a microcontroller (MCU) -> 32-bit MCU -> MIPS-based MCU -> embedded controller -> semiconductor. It integrates a 32-bit RISC core with on-chip Flash, SRAM, and mixed-signal peripherals so a single chip can replace external logic, op-amps, and simple ASICs. The microAptiv core supports microMIPS compressed instructions for higher code density than ARM Thumb2 at the same Flash budget, which is essential for cost-sensitive designs where every byte of Flash matters.
Key features include a 12-bit ADC with up to 16 channels (depending on package), 5 CCP/ECCP modules, multiple UART/SPI/I2C peripherals, a 32 kHz low-power RTCC, and a 4-channel hardware DMA. The device supports up to 25 MHz system clock from an internal 8 MHz oscillator with PLL, and operates from 2.0 V to 3.6 V. Its XLP (eXtreme Low Power) features include multiple idle/sleep modes, peripheral clock gating, and a deep-sleep current of 500 nA typical with RTCC running. On-chip temperature sensor, comparators, and a 5-bit DAC complete the analog offering.
Typical applications include battery-powered IoT sensor nodes, wearable health devices, industrial sensor hubs, low-cost HMI panels, and consumer remote controls. The 28-SSOP footprint is widely accepted in compact designs that need through-hole-like robustness on a surface-mount board, and the wide operating voltage range suits single-cell Li-ion and 2xAA alkaline designs. For designers evaluating cost-optimized 32-bit replacements for 8-bit/16-bit PIC designs, the PIC32MM GPL family offers a migration path with familiar MPLAB X toolchain support.
Drop-in alternatives for PIC32MM0032GPL028T-I/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 PIC32MM0032GPL028T-I/SS (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), Core, DMA Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MM0032GPL028-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MM0016GPL028T-I/SS
✅ Drop-In✓ In Stock
$0.5588 / Unit
View Datasheet →PIC32MM0032GPL020T-I/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC32MM0032GPL028T-I/SO
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC32MX170F256B-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.2 / Unit
View Datasheet →PIC32MM0032GPL028T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.08 / Unit
View Datasheet →PIC32MM0032GPL028T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 microAptiv UC |
| Core Count | 1 (Single-core) |
| Data Bus Width | 32-bit |
| Instruction Set | microMIPS (compressed MIPS32) |
| Maximum CPU Clock | 25 MHz |
| CoreMark Score | 79 CoreMark at 25 MHz |
| Flash Program Memory | 32 KB (32K x 8) |
| SRAM Data Memory | 8 KB |
| Operating Voltage Range | 2.0 V to 3.6 V |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Sleep Current (Deep Sleep w/ RTCC) | 500 nA typical |
| ADC | 12-bit, up to 16 channels (package-dependent) |
| Package | 28-pin SSOP (PDSO28), 0.65 mm pitch |
| Mounting Type | Surface Mount |
| MSL Level | MSL3 (per JEDEC J-STD-020) |
| Lead-Free / RoHS | Lead-free, RoHS compliant |
| DMA Channels | 4 channels |
| ICCP/CCP Modules | 3 ICCP + 2 ECCP (5 total) |
| Communication Peripherals | UART, SPI, I2C (multiple instances) |
| RTCC (Real-Time Clock/Calendar) | Yes, with 32 kHz domain |
PIC32MM0032GPL028T-I/SS Pin Configuration
| Pin 1 | RA0 — Port A bit 0 / ICSPDAT / analog input |
| Pin 2 | RA1 — Port A bit 1 / ICSPCLK / analog input |
| Pin 3 | RB0 — Port B bit 0 / analog input |
| Pin 4 | RB1 — Port B bit 1 / analog input |
| Pin 5 | RB2 — Port B bit 2 / analog input |
| Pin 6 | RB3 — Port B bit 3 / analog input |
| Pin 7 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1 — External oscillator input or crystal connection 1 |
| Pin 10 | OSC2 — External oscillator output or crystal connection 2 |
| Pin 11 | RC0 — Port C bit 0 |
| Pin 12 | RC1 — Port C bit 1 |
| Pin 13 | RC2 — Port C bit 2 |
| Pin 14 | RC3 — Port C bit 3 |
| Pin 15 | RC4 — Port C bit 4 |
| Pin 16 | RC5 — Port C bit 5 |
| Pin 17 | RC6 — Port C bit 6 |
| Pin 18 | RC7 — Port C bit 7 |
| Pin 19 | VSS — Ground reference (second) |
| Pin 20 | VDD — Positive supply voltage (second) |
| Pin 21 | RB4 — Port B bit 4 / SDA1 |
| Pin 22 | RB5 — Port B bit 5 / SCL1 |
| Pin 23 | RB6 — Port B bit 6 / ICSP programming clock |
| Pin 24 | RB7 — Port B bit 7 / ICSP programming data |
| Pin 25 | RA2 — Port A bit 2 |
| Pin 26 | RA3 — Port A bit 3 |
| Pin 27 | RA4 — Port A bit 4 |
| Pin 28 | RA5 — Port A bit 5 |
Typical Applications
PIC32MM0032GPL028T-I/SS is suitable for 7 applications: Battery-Powered IoT Sensor Node, Wearable Health Device Controller, Industrial Sensor Hub / PLC Expansion, Low-Cost HMI Panel Controller, Consumer Remote Control / IR-Controlled Device, Smart Home Sensor / Building Automation, Automotive Body Electronics / Non-Safety Subsystem.
Battery-Powered IoT Sensor Node
The PIC32MM0032GPL028T-I/SS is well-suited for battery-powered IoT sensor nodes where multi-year battery life and low BOM cost are mandatory. Its 500 nA deep-sleep current with RTCC running, 2.0 V-3.6 V supply range, and 32 KB Flash comfortably host typical sensor-fusion firmware plus a TCP/IP or LoRaWAN stack fragment. Placed as the central MCU on a 2-layer PCB, the device wakes periodically to read an external sensor via I2C or SPI, performs local aggregation, then returns to deep-sleep. Its peripheral clock gating further reduces active-mode current. The 12-bit ADC with up to 16 channels supports direct analog sensor interfaces without an external ADC, reducing both cost and PCB area.
Recommended
Wearable Health Device Controller
Wearable health devices like fitness bands, heart-rate monitors, and continuous glucose monitors benefit from the PIC32MM0032GPL028T-I/SS XLP characteristics. The 500 nA deep-sleep current extends battery life dramatically in duty-cycled applications, and the 25 MHz MIPS32 microAptiv UC core at 79 CoreMark provides ample compute for BLE radio control, sensor fusion, and on-device display driving. The 8 KB SRAM supports modest BLE stack footprints. The 28-SSOP package keeps the PCB compact for wearable form factors, and the -40C to +85C industrial temperature range covers skin-temperature and body-environmental use cases.
Recommended
Industrial Sensor Hub / PLC Expansion
In industrial sensor hubs and PLC expansion I/O modules, the PIC32MM0032GPL028T-I/SS provides 32-bit compute headroom for protocol bridging and pre-processing while operating reliably across the full -40C to +85C industrial temperature range. Its 12-bit ADC with multiple channels directly interfaces with 4-20 mA current-loop or 0-10 V analog sensors, and the multiple UART/SPI/I2C peripherals enable simultaneous Modbus RTU, SPI flash, and I2C sensor networks. The 32 KB program memory fits protocol conversion tables and a real-time OS abstraction layer. The wide 2.0 V-3.6 V supply permits direct operation from 3.3 V industrial rails.
Recommended
Low-Cost HMI Panel Controller
Low-cost human-machine interface (HMI) panels for appliances, building controls, and small industrial equipment commonly adopt the PIC32MM0032GPL028T-I/SS as a cost-effective 32-bit controller. Its ECCP modules drive PWM-controlled LED backlights or dimmers, while UART/SPI connect to segment-LCD or small TFT displays. The 32 KB Flash supports a lightweight graphics library plus touch handling, and the 8 KB SRAM holds display frame buffers for partial updates. The 28-SSOP footprint is widely accepted in mid-volume HMI designs where 4-layer PCBs are cost-prohibitive.
Recommended
Consumer Remote Control / IR-Controlled Device
For consumer remote controls, smart-home IR-controlled appliances, and learning-style universal remotes, the PIC32MM0032GPL028T-I/SS provides the right balance of low power, modest memory, and peripheral integration. Its ECCP modules generate precise 38 kHz carrier waveforms for IR transmission, while the ADC samples voice or ambient-light sensors. The 500 nA sleep current means a coin-cell battery can power a remote for years. The 32 KB Flash stores IR code libraries for multiple protocols, and the small 28-SSOP package keeps the remote slim.
Recommended
Smart Home Sensor / Building Automation
In smart-home sensors and building-automation endpoints like wireless thermostats, occupancy detectors, and air-quality monitors, the PIC32MM0032GPL028T-I/SS provides 32-bit performance with extreme-low-power characteristics. Its 500 nA deep-sleep current with RTCC enables multi-year operation from coin cells or energy-harvesting sources. The 12-bit ADC interfaces with environmental sensors (temperature, CO2, particulate matter, light), and multiple I2C/SPI peripherals allow concurrent sensor + radio module operation. The -40C to +85C industrial temperature range covers outdoor-mounted smart-home devices.
Recommended
Automotive Body Electronics / Non-Safety Subsystem
In non-safety automotive body electronics such as interior lighting controllers, seat-position memories, mirror adjusters, and accessory hubs, the PIC32MM0032GPL028T-I/SS provides industrial-grade operation across -40C to +85C. While not AEC-Q100 qualified (the part is industrial grade only), it suits aftermarket automotive accessories, garage-door openers, and non-critical interior subsystems. The ECCP modules drive LED dimming and small DC motor control, and the 32 KB Flash supports multi-mode operation. For AEC-Q100 automotive designs, choose PIC32MK or dsPIC33 families instead.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MM0032GPL028T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MM0032GPL028-I/SS | PIC32MM0016GPL028T-I/SS | PIC32MX170F256B-I/SS | PIC32MM0032GPL028T-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP (PDSO28) | 28-SSOP (PDSO28) - same | 28-SSOP (PDSO28) - same | 28-SSOP - same | 28-QFN (6x6) - same silicon, different footprint |
| Core | MIPS32 microAptiv UC @ 25 MHz | MIPS32 microAptiv UC @ 25 MHz | MIPS32 microAptiv UC @ 25 MHz | MIPS32 M4K @ 50 MHz | MIPS32 microAptiv UC @ 25 MHz |
| Flash Memory | 32 KB | 32 KB | 16 KB | 256 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 4 KB | 64 KB | 8 KB |
| Operating Voltage | 2.0 V - 3.6 V | 2.0 V - 3.6 V | 2.0 V - 3.6 V | 2.3 V - 3.6 V | 2.0 V - 3.6 V |
| Deep-Sleep Current | 500 nA (typical) | 500 nA | 500 nA | Higher (PIC32MX family, not XLP-optimized) | 500 nA |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| CoreMark Score | 79 CoreMark | 79 CoreMark | 79 CoreMark | ~145 CoreMark (higher clock) | 79 CoreMark |
Key Differentiators
- XLP-class 500 nA deep-sleep current with full SRAM retention (vs PIC32MX170F256B-I/SS)
- 32-bit performance in same 28-SSOP footprint as 8-bit/16-bit PIC parts (vs PIC24HJ32GP202-I/SS (16-bit, same SSOP-28))
- microMIPS compressed instructions maximize Flash utilization (vs PIC32MM0016GPL028T-I/SS (same core, 16 KB Flash))
Design Notes
The PIC32MM0032GPL028T-I/SS supports multiple low-power modes: Sleep, Deep Sleep, and Deep Sleep with RTCC. For lowest quiescent current, place unused peripherals in their disable state and gate peripheral clocks via the PMD registers. The on-chip LDO retains the RAM in deep sleep so wake-up latency is minimal. Decoupling: place a 100 nF ceramic capacitor within 5 mm of each VDD/VSS pair, plus a 4.7 uF bulk capacitor near the IC. A ferrite bead + 10 uF cap on the supply rail helps reject upstream switching noise.
Route the 28-SSOP package with 0.65 mm pitch traces using 0.15 mm (6 mil) trace width and 0.15 mm clearance. Place the ICSP programming footprint (PGED1/RB7, PGEC1/RB6) accessible - even if programming is via an ICSP header. Keep the 32.768 kHz crystal traces short and symmetric for stable RTCC operation; place the load capacitors within 2 mm of the OSC1/OSC2 pins. For noisy environments, surround the MCU with a ground pour stitched with vias.
Common pitfalls: (1) Failing to configure the PMD (Peripheral Module Disable) registers leaves peripherals drawing current - disable unused peripherals in deep sleep. (2) Configuring the ADC without adequate acquisition time causes noisy readings - allow at least 4 us per conversion at full speed. (3) Using the internal 8 MHz oscillator without PLL calibration may cause timing drift in UART communication; calibrate via the FRC tuning registers or use a crystal. (4) The microAptiv UC core defaults to microMIPS - code compiled for MIPS32 will not run unless startup config switches modes.
Analog and digital grounds should ideally meet at a single point near the MCU. Place the 12-bit ADC reference voltage decoupling capacitor (typically 100 nF + 10 uF) within 3 mm of the AVDD/AVSS pins if the package exposes separate analog pins, or use VDD with proper filtering. For SSOP-28 footprints, ensure the land pattern follows the IPC-7351 nominal-density design for hand-solderability. Keep high-current traces (LED drivers via ECCP) away from the crystal area to avoid oscillator jitter from ground bounce.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C) but NOT AEC-Q100 qualified - choose PIC32MK or dsPIC33 for AEC-Q100 automotive applications.
