PIC32MM0064GPM028-I/SS - 32-bit 25MHz 64KB Flash MCU | Microchip
MPN: PIC32MM0064GPM028-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.55 | $2,550.00 |
PIC32MM0064GPM028-I/SS Overview
A 32-bit microcontroller (MCU) is an integrated circuit that combines a 32-bit CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals on a single silicon die. The PIC32MM GPM family is the lowest-power member of Microchip's PIC32 line, sitting in the hierarchy: 32-bit MCU -> embedded microcontroller -> semiconductor IC. Its microAptiv core supports both MIPS32 and microMIPS instruction sets, the latter compressing common instructions to roughly 30% to save Flash.
Key differentiating features include CoreMark/mA efficiency that allows battery-powered designs to last years, hardware ECC on Flash for IEC 60730 Class B safety compliance, and an integrated USB Full-Speed transceiver that eliminates external components. The 12-bit 200ksps ADC with up to 9 analog inputs and the 5-bit DAC provide mixed-signal capability for sensor conditioning. Six I/O ports supporting peripheral pin select (PPS) give flexible routing for UART, SPI, I2C, and PWM signals.
Architecturally, the device is built on a low-leakage CMOS process with multiple power domains. Deep-sleep currents in the microampere range, configurable idle and sleep modes, and a real-time clock calendar (RTCC) running from a dedicated low-power oscillator enable years of operation from a coin cell. PPS allows remapping of digital peripherals to any I/O, simplifying PCB layout.
Typical applications include IoT sensor nodes, portable medical devices, digital audio accessories, gaming/entertainment peripherals, USB HID devices, low-power wireless sensor hubs, and industrial HMI modules. The 28-SSOP footprint suits hand-solderable prototypes and space-constrained production boards. The device provides 79 CoreMark, ample for BLE/Zigbee host stacks and modest DSP work.
When designing with this MCU, allocate the 16KB RAM carefully - USB stacks and TCP/IP libraries consume significant RAM; budget 4-6KB for the stack and 8-10KB for application data. Use the PPS feature to route peripherals to convenient pins rather than re-spinning the PCB. Enable Flash ECC for safety-critical firmware and use the RTCC with an external 32.768kHz crystal for accurate timekeeping during sleep.
This page synthesizes distributor pricing, drop-in same-package alternatives (including same-family PIC32MM variants and cross-brand USB-capable 32-bit MCUs), and practical low-power design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC32MM0064GPM028-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 PIC32MM0064GPM028-I/SS (same form factor and footprint) — differing in Package, ADC, Timers, Core Architecture, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MM0064GPL028-I/SS
✅ Drop-In✓ In Stock
$2.3 / Unit
View Datasheet →PIC32MM0064GPM028-I/ML
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC32MM0064GPM028-I/M6
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MM0032GPL028-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MM0016GPL028-I/SS
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC32MM0064GPL028-I/ML
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →PIC32MM0032GPL028-I/SO
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC32MM0064GPM028-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 microAptiv (PIC32) |
| Core Mark Score | 79 CoreMark at 25 MHz |
| Maximum CPU Clock | 25 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) with ECC |
| Data Memory (RAM) | 16 KB |
| Operating Voltage Range | 2 V to 3.6 V |
| I/O Pins | 21 |
| Package | 28-pin SSOP (Shrink Small Outline Package) |
| ADC | 12-bit, up to 9 channels, 200 ksps |
| DAC | 5-bit DAC |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Communication Peripherals | UART, SPI, I2C, I2S, PMP |
| Timers | 5 x 16-bit Timer/Counter, 5 x IC, 5 x OC, RTCC |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Instruction Set Support | MIPS32 / microMIPS compressed |
| RoHS Status | Compliant |
| MSL Level | 1 (unlimited floor life) |
| Mounting Type | Surface Mount |
PIC32MM0064GPM028-I/SS Pin Configuration
| Pin 1 | RB9 — I/O port B bit 9 (PPS-capable) |
| Pin 2 | RB10 — I/O port B bit 10 (PPS-capable) |
| Pin 3 | RB11 — I/O port B bit 11 (PPS-capable) |
| Pin 4 | RB13 — I/O port B bit 13 (PPS-capable) |
| Pin 5 | RB14 — I/O port B bit 14 (PPS-capable) |
| Pin 6 | RB15 — I/O port B bit 15 (PPS-capable) |
| Pin 7 | VSS — Ground |
| Pin 8 | VDD — Positive supply (2.0V to 3.6V) |
| Pin 9 | RA0 — I/O port A bit 0 (analog-capable) |
| Pin 10 | RA1 — I/O port A bit 1 (analog-capable) |
| Pin 11 | RA2 — I/O port A bit 2 (analog-capable) |
| Pin 12 | RA3 — I/O port A bit 3 (analog-capable) |
| Pin 13 | RA4 — I/O port A bit 4 (analog-capable) |
| Pin 14 | RA5 — I/O port A bit 5 (analog-capable) |
| Pin 15 | RA6 — I/O port A bit 6 (analog-capable) |
| Pin 16 | RA7 — I/O port A bit 7 (analog-capable) |
| Pin 17 | RB0 — I/O port B bit 0 (PPS-capable) |
| Pin 18 | RB1 — I/O port B bit 1 (PPS-capable) |
| Pin 19 | RB2 — I/O port B bit 2 (PPS-capable) |
| Pin 20 | RB3 — I/O port B bit 3 (PPS-capable) |
| Pin 21 | RB4 — I/O port B bit 4 (PPS-capable) |
| Pin 22 | RB5 — I/O port B bit 5 (PPS-capable) |
| Pin 23 | VSS — Ground |
| Pin 24 | VDD — Positive supply (2.0V to 3.6V) |
| Pin 25 | RB6 — I/O port B bit 6 (PPS-capable, ICDPG clock) |
| Pin 26 | RB7 — I/O port B bit 7 (PPS-capable, ICDPG data) |
| Pin 27 | RB8 — I/O port B bit 8 (PPS-capable) |
| Pin 28 | MCLR — Master clear (reset, active-low) |
Typical Applications
PIC32MM0064GPM028-I/SS is suitable for 6 applications: USB HID Peripheral Devices, Portable Medical Devices, IoT Sensor Nodes, Digital Audio Accessories, Gaming and Entertainment Peripherals, Industrial HMI Modules.
USB HID Peripheral Devices
The PIC32MM0064GPM028-I/SS is purpose-built for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. Its integrated USB 2.0 Full-Speed controller with internal transceiver eliminates external PHY components, reducing BOM cost by approximately $0.30-$0.50 per unit. The 64KB ECC Flash is ample for HID report handlers, NKRO firmware, and capacitive touch sensing libraries, while 16KB RAM supports HID ring buffers and debounce state machines. At 25 MHz, the microAptiv core delivers 79 CoreMark, which provides responsive USB polling at the standard 1 kHz HID rate with significant processing headroom for matrix scanning, RGB LED effects, or wireless receiver integration. Engineers typically pair this MCU with a TPS2051B USB power switch and minimal external ESD protection. The SSOP-28 footprint suits slim dongle enclosures. Sleep currents under 10 uA enable battery-powered wireless mice with months of runtime.
Recommended
Portable Medical Devices
Battery-powered medical devices such as glucose meters, pulse oximeters, and portable ECG monitors benefit from the PIC32MM0064GPM028-I/SS extreme low power (XLP) operation and IEC 60730 Class B safety compliance via hardware ECC Flash. The 2-3.6V operating range directly supports single-cell lithium and 2x AA chemistries without external regulators, while deep-sleep currents under 5 uA extend shelf life and runtime beyond 1-2 years on alkaline cells. The 12-bit 200 ksps ADC with up to 9 analog inputs captures biosensor signals (PPG, ECG, temperature) with adequate resolution for medical-grade measurements when paired with proper front-end amplifiers. ECC Flash protects against bit-flips in safety-critical firmware, satisfying FDA Class I/II guidance for medical device software. The 25 MHz MIPS32 core runs compression algorithms for ECG data storage and supports USB data transfer to host PCs for clinical review.
Recommended
IoT Sensor Nodes
The PIC32MM0064GPM028-I/SS serves as the main MCU in battery-powered IoT sensor nodes for building automation, agricultural monitoring, and asset tracking. Its microMIPS instruction set compresses wireless protocol stacks (LoRaWAN, Zigbee, BLE) by approximately 30%, allowing more application code within the 64KB Flash. The integrated USB simplifies provisioning firmware updates via standard Type-A ports during factory calibration. At 25 MHz, the core consumes only about 4 mA active, and deep-sleep modes drop to under 5 uA with RTCC running, enabling years of operation on a single 2400 mAh LiSOCl2 cell. The 12-bit ADC with 9 inputs monitors environmental sensors (temperature, humidity, CO2, motion PIR) without external multiplexer ICs. Engineers use PPS to route SPI-based sensor buses to convenient pins, simplifying PCB layout in compact node enclosures.
Recommended
Digital Audio Accessories
USB audio peripherals such as USB DACs, audio interfaces, and headphone amplifiers leverage the PIC32MM0064GPM028-I/SS integrated USB 2.0 Full-Speed controller and 5-bit DAC. The MCU acts as a USB Audio Class device, streaming PCM samples from the host to external I2S DACs with sub-millisecond latency. The microAptiv core's deterministic interrupt response is well-suited for low-latency audio transport, while 16KB RAM buffers USB isochronous packets without dropouts. The I2S peripheral connects directly to high-performance audio DACs like the PCM5102A, bypassing the internal 5-bit DAC for higher fidelity designs. At 25 MHz, the MCU handles USB isochronous transfers at 48 kHz / 24-bit with comfortable headroom for mixing, sample rate conversion, and effect processing. The 2-3.6V supply supports direct USB bus-powered operation (5V via internal LDO dropout to 3.3V), simplifying enclosure design.
Recommended
Gaming and Entertainment Peripherals
Gaming peripherals such as arcade controllers, MIDI controllers, RGB keyboards, and arcade sticks use the PIC32MM0064GPM028-I/SS as the USB interface MCU. The 25 MHz MIPS32 core executes HID report generation with minimal latency (sub-1 ms polling) at the 1000 Hz USB rate, while 64KB Flash stores RGB lighting patterns, key-mapping profiles, and macro libraries. PPS remaps SPI-driven LED drivers to any pin, easing PCB routing for dense key matrix designs. The 21 I/O pins support up to 8x8 key matrices for arcade controllers plus rotary encoder inputs, button rows, and status LEDs. USB Full-Speed bandwidth (12 Mbps) handles 16-bit HID reports at 8 kHz polling for high-resolution gaming mice. Deep-sleep currents under 10 uA preserve battery life in wireless gamepads. The 28-SSOP package enables slim controller enclosures. Engineers pair this MCU with WS2812B LED strips and shift-register expanders for full RGB effects.
Recommended
Industrial HMI Modules
Industrial human-machine interface (HMI) modules, including control panels, programmable indicator lights, and small touch displays, leverage the PIC32MM0064GPM028-I/SS USB connectivity for configuration and firmware updates. The 79 CoreMark performance at 25 MHz drives small TFT displays (up to 320x240) via PMP or SPI interfaces, handles capacitive touch scanning via the CTMU peripheral, and runs real-time event logging to USB mass storage. The 12-bit ADC with 9 inputs monitors analog sensors (pressure, flow, temperature) in industrial automation contexts, while the 5-bit DAC drives analog outputs for valve control or analog signaling. ECC Flash satisfies IEC 60730 Class B safety requirements for industrial equipment with unattended operation. The wide 2-3.6V supply range accepts 24V industrial rails through external regulation. Industrial temperature grade (-40C to +85C) supports factory floor deployment.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MM0064GPM028-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MM0064GPL028-I/SS | PIC32MM0064GPM028-I/ML | PIC32MM0064GPM028-I/M6 | PIC32MM0032GPL028-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP (same) | 28-QFN (different) | 28-QFN ISCP (different) | 28-SSOP (same) |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 16 KB (-75%) |
| RAM | 16 KB | 16 KB | 16 KB | 8 KB (-50%) | 4 KB (-75%) |
| USB Controller | USB 2.0 FS Device/Host/OTG | None | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | None |
| Maximum Clock Speed | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| ECC Flash | Yes | Yes | Yes | Yes | Yes |
| I/O Pins | 21 | 21 | 21 | 21 | 21 |
| Approximate Unit Price (qty 1) | $4.20 | $3.80 | $4.30 | $3.40 | $3.10 |
Key Differentiators
- Integrated USB 2.0 Full-Speed with internal transceiver (vs PIC32MM0064GPL028-I/SS)
- ECC Flash for IEC 60730 Class B safety (vs PIC32MM0032GPL028-I/SS)
- microMIPS instruction compression (vs PIC32MX1xx/2xx)
- Wide 2.0V to 3.6V supply range (vs PIC24FJ64GA002)
Design Notes
The PIC32MM0064GPM028-I/SS features multiple low-power modes. For battery-powered designs, use Sleep mode (CPU halted, peripherals running) at about 0.8 mA, Idle mode (CPU halted but peripherals active) for USB polling at about 4 mA active, and Deep Sleep mode (RTCC running, all else off) at under 5 uA. Configure the RTCC to wake the MCU from a 32.768 kHz external crystal for accurate timekeeping during extended sleep. Use PPS to map USB D+/D- lines to the dedicated USB pins and avoid remapping them to maintain USB signal integrity.
Route the USB D+ and D- lines as a 90-ohm differential pair with matched length within 2 mm, keeping them short (under 50 mm total) and isolated from switching signals. Place the VBUS decoupling capacitor (4.7 uF ceramic) within 5 mm of the VBUS pin. Connect both VDD pins (8 and 24) and both VSS pins (7 and 23) to their respective planes with multiple vias for thermal relief. The 28-SSOP is 0.65 mm pitch; use 0.4 mm-wide traces and 0.2 mm spacing on escape routing. Maintain a continuous ground plane beneath the MCU for thermal dissipation and EMI suppression.
Do not exceed 3.6V on any pin; the PIC32MM0064GPM028-I/SS is a 3.3V part and 5V tolerance applies only to specific pins (marked in the datasheet). When using USB bus-powered designs, ensure VBUS never exceeds 3.6V on VDD - add a clamping diode if hot-plug transients are possible. Enable Flash ECC configuration bits in the configuration word for IEC 60730 safety compliance; the ECC bit must be set before Flash writes. PPS must be unlocked before remapping peripherals; failing to unlock causes silent I/O failures.
Place the 32.768 kHz RTCC crystal within 5 mm of the SOSCO/SOSCI pins with short traces and a guard ring tied to analog ground for low-noise timekeeping. Decouple each VDD pin with a 100 nF ceramic capacitor within 2 mm of the pin, plus a 4.7 uF bulk capacitor on each VDD rail. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for in-circuit debugging; do not omit these or ICSP programming will fail.
The PIC32MM0064GPM028-I/SS in 28-SSOP has a thermal resistance (theta_JA) of approximately 90 C/W on a standard 4-layer JEDEC test board. At maximum active current of 15 mA at 3.3V, dissipation is about 50 mW, resulting in a junction temperature rise of only 4.5 C above ambient - well within safe limits. In Deep Sleep mode, dissipation drops to about 15 uW. No heatsink is required. For industrial -40C to +85C environments, ensure ambient temperature plus self-heating stays below 125 C junction.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free (Pb-free) SSOP package. Not AEC-Q100 qualified (industrial grade only). ECC Flash supports IEC 60730 Class B safety compliance for household appliances.
