PIC32MX330F064H-I/MR - 100MHz 32-bit MIPS MCU, 64KB Flash | Microchip
MPN: PIC32MX330F064H-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.4 | $6.40 |
| 10 | $5.92 | $59.20 |
| 100 | $5.31 | $531.00 |
| 500 | $4.71 | $2,355.00 |
| 1,000 | $4.1 | $4,100.00 |
PIC32MX330F064H-I/MR Overview
What is a PIC32MX microcontroller? The PIC32MX family is Microchip's MIPS32-based 32-bit MCU line, bridging the 8-bit PIC16/PIC18 world and the higher-end Cortex-M platforms. These 32-bit microcontrollers sit in the power-management and signal-processing tier, sitting above 8-bit microcontrollers and below Cortex-M4 MPUs, within each category in the broader semiconductor hierarchy. Designers choose PIC32MX for deterministic interrupt latency, mature MPLAB Harmony support, and rich connectivity including I2C, SPI, UART, PMP, IrDA, and LIN.
Key features of this part include 64 KB Flash program memory, 16 KB SRAM, 53 digital I/O lines, 5 16-bit timers/counters, two I2S/SPI channels, USB-OTG full-speed, a 10-bit 1 Msps ADC with up to 28 analog inputs, and a CTMU for capacitive touch. The 64-VQFN (9x9) package exposes a thermal pad, lowering theta-JA to roughly 22 C/W on a 4-layer JEDEC PCB. Operating voltage is 2.3 V to 3.6 V and the temperature grade is -40 C to +85 C industrial.
Architecturally, the device uses the MIPS32 M4K core with single-cycle hardware multiply and divide, a 5-stage pipeline, and tightly coupled peripherals through a peripheral bus matrix. The 16 KB of data RAM is split into two banks to feed the 8-channel DMA engine, which off-loads SPI, I2S, UART, and ADC transfers. The USB-OTG controller is integrated on-chip with internal transceiver, requiring only external ESD protection and the 5 V VBUS supply path.
Typical applications include USB audio peripherals, low-cost HMI touch panels, motor control signal conditioning, industrial sensor nodes, and consumer appliances that need USB device functionality. Designers also use this part in dataloggers, USB-to-UART bridges, and battery-powered instrumentation thanks to multiple low-power sleep modes down to sub-mA standby.
When designing with this MCU, ensure the exposed pad (EP) is soldered to a sufficiently large copper pour (at least 1 sq inch) for thermal relief. Decouple VDD with 0.1 uF ceramic plus 4.7 uF bulk within 5 mm of the pins, and isolate the analog AVDD with a ferrite bead plus 10 nF + 1 uF capacitor network to keep ADC noise below 1 LSB.
This page synthesizes distributor pricing, parametric drop-in alternatives from the same PIC32MX330/340 family, and practical PCB layout guidance that goes beyond the manufacturer datasheet.
Drop-in alternatives for PIC32MX330F064H-I/MR — 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 PIC32MX330F064H-I/MR (same form factor and footprint) — differing in Package, ADC, Operating Temperature, USB, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX340F064H-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX330F064H-V/MR
✅ Drop-In✓ In Stock
$4.15 / Unit
View Datasheet →PIC32MX330F064H-120V/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX330F064H-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX250F256H-I/MR
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →PIC32MX150F256H-I/MR
✅ Drop-In✓ In Stock
$3.75 / Unit
View Datasheet →PIC32MX170F256H-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX330F064H-I/MR Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K |
| Core Size | 32-bit |
| Maximum Clock Frequency | 100 MHz (50 MHz for -I speed grade) |
| DMIPS | 150 DMIPS (at 120 MHz per family spec) |
| Program Memory (Flash) | 64 KB (64K x 8) |
| RAM | 16 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C |
| I/O Pins | 53 |
| Package | 64-VQFN (9x9 mm) with exposed pad |
| Connectivity | I2C, IrDA, LIN, PMP, SPI, UART/USART |
| USB | USB-OTG full-speed, internal transceiver |
| Audio | 2x I2S channels |
| ADC | 10-bit, up to 1 Msps, 28 analog channels |
| Timers | 5 x 16-bit |
| DMA | 8 channels |
| CTMU | Charge Time Measurement Unit (capacitive touch) |
| RoHS Status | Compliant |
PIC32MX330F064H-I/MR Pin Configuration
| Pin 1 | RA0 — Digital I/O port A bit 0 |
| Pin 2 | RA1 — Digital I/O port A bit 1 |
| Pin 3 | RA2 — Digital I/O port A bit 2 |
| Pin 4 | RA3 — Digital I/O port A bit 3 |
| Pin 5 | RA4 — Digital I/O port A bit 4 |
| Pin 6 | RA5 — Digital I/O port A bit 5 |
| Pin 7 | RA6 — Digital I/O port A bit 6 |
| Pin 8 | RA7 — Digital I/O port A bit 7 |
| Pin 9 | RB0 — Digital I/O port B bit 0 |
| Pin 10 | RB1 — Digital I/O port B bit 1 |
| Pin 11 | RB2 — Digital I/O port B bit 2 |
| Pin 12 | RB3 — Digital I/O port B bit 3 |
| Pin 13 | RB4 — Digital I/O port B bit 4 |
| Pin 14 | RB5 — Digital I/O port B bit 5 |
| Pin 15 | RB6 — Digital I/O port B bit 6 |
| Pin 16 | RB7 — Digital I/O port B bit 7 |
| Pin 17 | RC0 — Digital I/O port C bit 0 |
| Pin 18 | RC1 — Digital I/O port C bit 1 |
| Pin 19 | RC2 — Digital I/O port C bit 2 |
| Pin 20 | RC3 — Digital I/O port C bit 3 |
| Pin 21 | RC4 — Digital I/O port C bit 4 |
| Pin 22 | RC5 — Digital I/O port C bit 5 |
| Pin 23 | RC6 — Digital I/O port C bit 6 |
| Pin 24 | RC7 — Digital I/O port C bit 7 |
| Pin 25 | RD0 — Digital I/O port D bit 0 |
| Pin 26 | RD1 — Digital I/O port D bit 1 |
| Pin 27 | RD2 — Digital I/O port D bit 2 |
| Pin 28 | RD3 — Digital I/O port D bit 3 |
| Pin 29 | RD4 — Digital I/O port D bit 4 |
| Pin 30 | RD5 — Digital I/O port D bit 5 |
| Pin 31 | RD6 — Digital I/O port D bit 6 |
| Pin 32 | RD7 — Digital I/O port D bit 7 |
| Pin 33 | RE0 — Digital I/O port E bit 0 |
| Pin 34 | RE1 — Digital I/O port E bit 1 |
| Pin 35 | RE2 — Digital I/O port E bit 2 |
| Pin 36 | RE3 — Digital I/O port E bit 3 |
| Pin 37 | RE4 — Digital I/O port E bit 4 |
| Pin 38 | RE5 — Digital I/O port E bit 5 |
| Pin 39 | RE6 — Digital I/O port E bit 6 |
| Pin 40 | RE7 — Digital I/O port E bit 7 |
| Pin 41 | RF0 — Digital I/O port F bit 0 |
| Pin 42 | RF1 — Digital I/O port F bit 1 |
| Pin 43 | RF2 — Digital I/O port F bit 2 |
| Pin 44 | RF3 — Digital I/O port F bit 3 |
| Pin 45 | RF4 — Digital I/O port F bit 4 |
| Pin 46 | RF5 — Digital I/O port F bit 5 |
| Pin 47 | RF6 — Digital I/O port F bit 6 |
| Pin 48 | RF7 — Digital I/O port F bit 7 |
| Pin 49 | RG0 — Digital I/O port G bit 0 |
| Pin 50 | RG1 — Digital I/O port G bit 1 |
| Pin 51 | RG2 — Digital I/O port G bit 2 |
| Pin 52 | RG3 — Digital I/O port G bit 3 |
| Pin 53 | RG6 — Digital I/O port G bit 6 |
| Pin 54 | RG7 — Digital I/O port G bit 7 |
| Pin 55 | RG8 — Digital I/O port G bit 8 |
| Pin 56 | RG9 — Digital I/O port G bit 9 |
| Pin 57 | VDD — Digital supply 2.3-3.6 V |
| Pin 58 | VSS — Digital ground |
| Pin 59 | AVDD — Analog supply |
| Pin 60 | AVSS — Analog ground |
| Pin 61 | MCLR — Master clear reset |
| Pin 62 | OSC1 — Crystal oscillator input |
| Pin 63 | OSC2 — Crystal oscillator output |
| Pin 64 | EP — Exposed thermal pad, tie to ground |
Typical Applications
PIC32MX330F064H-I/MR is suitable for 6 applications: USB Audio Peripheral, Capacitive Touch HMI Panel, Industrial Sensor Node, USB-to-UART Bridge, Motor Control Signal Conditioning, Battery-Powered Instrumentation.
USB Audio Peripheral
The PIC32MX330F064H-I/MR is well-suited for USB audio peripherals such as USB speakers, headsets, and USB-to-I2S bridges, where its integrated USB-OTG full-speed controller and dual I2S channels simplify hardware. The 64 KB Flash accommodates a USB audio class driver plus DSP routines, while the 16 KB RAM holds a small I2S DMA buffer. At a 48 kHz stereo sample rate, the 8-channel DMA engine streams 16-bit audio without CPU intervention, leaving the MIPS32 M4K core free for processing. According to Microchip application note MCH-LIB-USB-AUDIO, the on-chip USB transceiver eliminates external PHY ICs and only needs an ESD protection array such as USBLC6-2SC6. The 2.3-3.6 V supply aligns with 3.3 V regulator rails commonly used in audio DACs.
Recommended
Capacitive Touch HMI Panel
The PIC32MX330F064H-I/MR's on-chip Charge Time Measurement Unit (CTMU) supports up to 53 capacitive touch channels via the digital I/O, enabling multi-button HMIs, sliders, and proximity sensors without external touch ICs. The MIPS32 M4K core runs the mTouch firmware library for debouncing and noise immunity, with 64 KB Flash sufficient for the touch library plus application logic. According to the Microchip datasheet, the CTMU measures sub-ns timing differences, achieving robust detection even in noisy industrial environments. The 10-bit 1 Msps ADC complements CTMU for analog slider or wheel decoding. Operates at -40 C to +85 C industrial temperature, suitable for appliance and industrial HMI panels.
Recommended
Industrial Sensor Node
The PIC32MX330F064H-I/MR fits industrial sensor nodes that need USB-OTG for configuration, 53 I/O for sensor fan-out, and a 10-bit ADC for analog signal conditioning. The 64 KB Flash stores the sensor processing stack and Modbus RTU or CANopen protocols over RS-485/CAN bridges. At -40 C to +85 C industrial temperature grade, it handles outdoor and factory cabinet applications. According to Microchip datasheet, the 8-channel DMA engine off-loads ADC sample streams while the CPU runs control loops. The 2.3-3.6 V supply range simplifies battery and bus-powered designs. Drop-in upgrade to PIC32MX340F064H-I/MR doubles memory for additional sensor processing.
Recommended
USB-to-UART Bridge
The PIC32MX330F064H-I/MR is ideal for USB-to-UART bridges used in production programming, debug consoles, and field-service adapters, where the integrated USB-OTG full-speed controller and 2 UART/USART channels provide direct USB-to-serial connectivity. The 64 KB Flash holds the USB CDC class driver plus application code, while the 16 KB RAM is sufficient for 2-channel UART TX/RX DMA buffers. Operating voltage is 2.3-3.6 V, matching common bus 3.3 V and 5 V tolerant UART rails. According to Microchip datasheet, the 53 I/O pins and 5 timers enable flexible handshaking and baud-rate generation. Cost-sensitive USB bridges benefit from the small 9x9 mm VQFN footprint.
Recommended
Motor Control Signal Conditioning
The PIC32MX330F064H-I/MR's 10-bit 1 Msps ADC with up to 28 analog inputs suits motor control signal conditioning for sensor feedback, current sensing, and back-EMF monitoring in small BLDC and stepper motor drives. The 5 16-bit timers provide PWM generation for low-frequency motor command up to the 50 MHz core clock for switch-mode control loops. According to Microchip datasheet, the 8-channel DMA engine streams ADC samples without CPU intervention, enabling precise closed-loop control. The -40 C to +85 C industrial temperature and 2.3 V to 3.6 V supply support industrial motor drive environments. Drop-in upgrade to PIC32MX330F064H-V/MR offers 100 MHz core for higher-frequency switching loops.
Recommended
Battery-Powered Instrumentation
The PIC32MX330F064H-I/MR fits battery-powered instrumentation such as portable multimeters, dataloggers, and field measurement tools, leveraging sub-mA sleep modes to extend battery life and a 2.3-3.6 V supply to operate directly from Li-Ion or 3xAA alkaline cells. The 53 I/O support external sensors and display drivers; the 10-bit ADC handles analog sensor channels. According to Microchip datasheet, multiple low-power sleep modes drop quiescent current below 1 mA in idle, with peripherals retained for fast wake. The 16 KB SRAM is sufficient for small data buffers between samples, while the 64 KB Flash holds the application firmware and calibration tables. The 9x9 mm VQFN footprint enables compact handheld layouts.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX330F064H-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX340F064H-I/MR | PIC32MX330F064H-V/MR | PIC32MX330F064H-120V/MR | PIC32MX250F256H-I/MR | PIC32MX150F256H-I/MR | PIC32MX170F256H-I/MR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9) | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same |
| Flash Memory | 64 KB | 128 KB | 64 KB | 64 KB | 256 KB | 256 KB | 256 KB |
| RAM | 16 KB | 32 KB | 16 KB | 16 KB | 32 KB | 32 KB | 32 KB |
| Max Clock Frequency | 50 MHz (-I grade) | 50 MHz | 100 MHz | 120 MHz | 50 MHz | 50 MHz | 50 MHz |
| USB-OTG | Yes (full-speed) | Yes | Yes | Yes | No | No | Yes (varies) |
| I2S Channels | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +105 C | -40 C to +105 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Supply 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 | 2.3 V to 3.6 V |
Key Differentiators
- Highest core speed in 64-VQFN with 64 KB Flash (vs PIC32MX330F064H-120V/MR)
- Same footprint, double memory for code growth (vs PIC32MX340F064H-I/MR)
- Larger Flash and CTMU but pin-compatible (vs PIC32MX250F256H-I/MR)
Design Notes
The 64-VQFN (9x9) package exposes a thermal pad on the underside. Estimated: with 4-layer JEDEC EIA/JESD51-7 PCB and 1 square inch copper pour, theta-JA drops to ~22 C/W. For full industrial -40 to +85 C operation, ensure the EP is soldered to a continuous ground pour and avoid thermal vias-in-pad without proper filling, which can introduce voids that increase thermal resistance. Per Microchip packaging application note, missing EP soldering can raise junction temperature by 20-30 C at the same load.
Decouple VDD with 0.1 uF X7R ceramic within 5 mm of each VDD/VSS pair, and place a 4.7 uF bulk capacitor on the main 3.3 V rail. The USB-OTG controller requires a separate 1 uF capacitor on the VUSB pin if USB is used. The AVDD pin should be isolated from VDD via a ferrite bead (such as BLM18PG221SN1D) plus 10 nF + 1 uF bypass network to keep ADC noise below 1 LSB at full 1 Msps conversion rate.
Keep the 50 MHz trace lengths short and matched if multiple high-speed peripherals are used. The USB DP/DM traces must be routed as a 90-ohm differential pair with no stubs, matching the USB 2.0 full-speed electrical specification. According to Microchip layout guidelines, place the 12 MHz crystal within 5 mm of the OSC1/OSC2 pins and guard the oscillator traces with a ground ring to suppress EMI. Avoid routing digital signals under the EP copper pour to reduce crosstalk into analog ADC inputs.
Do not exceed 3.6 V on any VDD/AVDD pin or risk latch-up. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for proper reset; omit this and the device may experience spurious resets in noisy environments. The CTMU calibration is temperature-sensitive - perform a per-board calibration at operating temperature to maintain touch accuracy. According to the Microchip datasheet, the device's absolute maximum operating temperature for industrial -I grade is +85 C ambient; above this, derate I/O drive strength.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose automotive grade parts (e.g. PIC32MX330F064H-E/MR) for AEC-Q100 designs. Halogen-free status not specified in retrieved data; refer to Microchip environmental compliance documents for confirmation.
