PIC32MX430F064HT-I/MR - 100MHz 32-bit MCU 64KB Flash | Microchip
MPN: PIC32MX430F064HT-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.1 | $7.10 |
| 10 | $6.4 | $64.00 |
| 100 | $5.55 | $555.00 |
| 500 | $4.92 | $2,460.00 |
| 1,000 | $4.35 | $4,350.00 |
PIC32MX430F064HT-I/MR Overview
A 32-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, program and data memory, and a configurable set of peripheral interfaces (timers, ADC/DAC, communication buses, I/O). In the broader taxonomy, MCUs sit below microprocessors (MPU) in integration and above discrete logic in capability, forming the lowest decision-making layer of embedded systems. The PIC32MX family specifically targets cost-sensitive 32-bit designs where MIPS instruction set familiarity, USB connectivity, and PIC ecosystem software (MPLAB X, Harmony) matter more than raw core-mark scores.
Key feature highlights include 64 KB single-cycle Flash with live-update support, 16 KB SRAM, USB-OTG full-speed with internal transceiver, two SPI/I2S ports, two I2C and two UART interfaces, five 16-bit timers, a 10-bit 1 Msps ADC with up to 28 channels, a charge time measurement unit (CTMU) for capacitive touch and time-of-flight, parallel master port (PMP) for graphics or external memory, and a hardware DMA controller with up to eight channels. A configurable interrupt controller with five priority levels supports deterministic real-time response.
Architecturally, the M4K core implements a 5-stage pipeline with single-cycle MAC and hardware multiply/divide, executes most instructions in one cycle, and supports MIPS16e code compression for denser Flash usage. The 16 KB SRAM is split into 4 KB tightly-coupled core RAM plus 12 KB system RAM. A 4 KB instruction cache pre-fetches Flash lines, hiding Flash latency. On-chip voltage regulation produces a 1.8 V core domain from the external 2.3-3.6 V VDD, eliminating the need for an external LDO on most designs. Peripheral DMA offloads SPI, UART, I2C, ADC, and PMP transfers, freeing the core for application logic.
Typical applications include USB peripherals (HID, CDC, mass storage, audio class), capacitive-touch user interfaces using CTMU, low-cost graphics HMI via PMP and an external LCD controller, industrial sensor nodes with on-chip ADC, and consumer audio docks using I2S. The wide 2.3-3.6 V supply and -40 C to +85 C industrial temperature range also make it suitable for factory-floor equipment.
When designing with this device, pay attention to the 64-pin VQFN land pattern: thermal pad soldering and via stitching are critical for achieving the rated thermal resistance. Decouple every VDD/VSS pair with a 100 nF X7R placed within 2 mm of the pin, and add a 4.7 uF bulk capacitor near the VBUS line when the USB-OTG transceiver is used. Programming uses MPLAB X IDE with the ICD 3 or PICkit 4.
This page synthesizes live distributor pricing, drop-in alternatives from the same VQFN-64 footprint, and practical design notes not found in the manufacturer datasheet, giving procurement and engineering teams a single source for PIC32MX430F064HT-I/MR sourcing decisions.
Drop-in alternatives for PIC32MX430F064HT-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 PIC32MX430F064HT-I/MR (same form factor and footprint) — differing in ADC, Package, I/O Pins, Maximum CPU Speed, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX430F064H-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX430F064HT-V/MR
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC32MX330F064H-I/MR
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC32MX350F128H-I/MR
✅ Drop-In✓ In Stock
$2.98 / Unit
View Datasheet →PIC32MX370F512H-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX250F256H-I/MR
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →PIC32MX430F064HT-I/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 100 MHz |
| Flash Program Memory | 64 KB |
| SRAM | 16 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| I/O Pins | 49 |
| Package | VQFN-64 (9x9 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial) |
| USB Interface | USB-OTG Full-Speed with on-chip transceiver |
| SPI / I2S | 2 modules |
| I2C | 2 modules |
| UART | 2 modules |
| ADC | 10-bit, 1 Msps, up to 28 channels |
| DMA Channels | 8 (with hardware assist for SPI, UART, I2C, ADC, PMP) |
| Timers | 5 x 16-bit |
| CTMU | Yes (capacitive touch / time-of-flight) |
| Parallel Master Port (PMP) | Yes |
| RoHS Status | Compliant |
PIC32MX430F064HT-I/MR Pin Configuration
| Pin 1 | RA0 — General I/O / U2RX |
| Pin 2 | RA1 — General I/O / U2TX |
| Pin 3 | RB0 — General I/O / CN2 |
| Pin 4 | RB1 — General I/O / CN3 |
| Pin 5 | RB2 — General I/O / OC1 |
| Pin 6 | RB3 — General I/O / OC2 |
| Pin 7 | RB4 — General I/O / I2C1 SDA |
| Pin 8 | RB5 — General I/O / I2C1 SCL |
| Pin 9 | RB6 — General I/O / ICD PGC |
| Pin 10 | RB7 — General I/O / ICD PGD |
| Pin 11 | RB8 — General I/O / U1RX |
| Pin 12 | RB9 — General I/O / U1TX |
| Pin 13 | RB10 — General I/O / TMS |
| Pin 14 | RB11 — General I/O / TCK |
| Pin 15 | RB12 — General I/O / AN12 |
| Pin 16 | RB13 — General I/O / AN13 |
| Pin 17 | RB14 — General I/O / AN14 |
| Pin 18 | RB15 — General I/O / AN15 / OC5 |
| Pin 19 | VDD — Digital supply 2.3-3.6 V |
| Pin 20 | VSS — Digital ground |
| Pin 21 | RC1 — General I/O / OC1 |
| Pin 22 | RC2 — General I/O / OC2 |
| Pin 23 | RC3 — General I/O / OC3 |
| Pin 24 | RC4 — General I/O / OC4 |
| Pin 25 | VDD — Digital supply 2.3-3.6 V |
| Pin 26 | VSS — Digital ground |
| Pin 27 | RC5 — General I/O / OC5 |
| Pin 28 | RC6 — General I/O / AN6 |
| Pin 29 | RC7 — General I/O / AN7 |
| Pin 30 | RC8 — General I/O / AN8 |
| Pin 31 | RC9 — General I/O / AN9 |
| Pin 32 | VDD — Digital supply 2.3-3.6 V |
| Pin 33 | VSS — Digital ground |
| Pin 34 | RD0 — General I/O / AN0 |
| Pin 35 | RD1 — General I/O / AN1 |
| Pin 36 | RD2 — General I/O / AN2 |
| Pin 37 | RD3 — General I/O / AN3 |
| Pin 38 | RD4 — General I/O / AN4 |
| Pin 39 | RD5 — General I/O / AN5 |
| Pin 40 | RD6 — General I/O |
| Pin 41 | RD7 — General I/O |
| Pin 42 | RD8 — General I/O / RTCC |
| Pin 43 | VDD — Digital supply 2.3-3.6 V |
| Pin 44 | VSS — Digital ground |
| Pin 45 | RD9 — General I/O |
| Pin 46 | RD10 — General I/O |
| Pin 47 | RD11 — General I/O |
| Pin 48 | RD12 — General I/O |
| Pin 49 | RD13 — General I/O |
| Pin 50 | RD14 — General I/O |
| Pin 51 | RD15 — General I/O |
| Pin 52 | VUSB — USB 3.3 V regulator output / supply for transceiver |
| Pin 53 | VBUS — USB VBUS sense input (5 V tolerant) |
| Pin 54 | D+ — USB data plus |
| Pin 55 | D- — USB data minus |
| Pin 56 | RF2 — General I/O / U2TX alternate |
| Pin 57 | RF3 — General I/O / U2RX alternate |
| Pin 58 | RF4 — General I/O / U2CTS |
| Pin 59 | RF5 — General I/O / U2RTS |
| Pin 60 | RF6 — General I/O |
| Pin 61 | RF7 — General I/O |
| Pin 62 | RF8 — General I/O |
| Pin 63 | VDD — Digital supply 2.3-3.6 V |
| Pin 64 | VSS — Digital ground |
| Pin 65 | EP — Exposed thermal pad - connect to ground for thermal dissipation |
Typical Applications
PIC32MX430F064HT-I/MR is suitable for 6 applications: USB HID Peripheral (Keyboard, Mouse, Custom), Capacitive Touch User Interface, Low-Cost Graphics HMI with External LCD Controller, Industrial Sensor Node with Modbus RTU, USB Audio Class Device (Headset, Speaker Dock), Consumer USB Mass Storage / MIDI Device.
USB HID Peripheral (Keyboard, Mouse, Custom)
The PIC32MX430F064HT-I/MR's integrated USB-OTG full-speed controller with on-chip transceiver and dedicated DMA channels makes it a strong fit for USB HID peripherals such as keyboards, mice, custom joysticks, and HID-class industrial input devices. The 100 MHz MIPS32 M4K core provides more than enough headroom to handle HID report generation, debouncing, and LED animation, while the 64 KB Flash accommodates USB stack plus application code. Designers typically use Microchip's MPLAB Harmony USB Device stack, which requires only a 4 MHz crystal plus 12 MHz PLL configuration. The 5 V-tolerant I/O simplifies matrix-scanning interfaces to legacy keyboards, and the DMA-offloaded endpoint memory leaves CPU cycles free for the application layer.
Recommended
Capacitive Touch User Interface
The on-chip CTMU (Charge Time Measurement Unit) with hardware-assisted timing enables precise capacitive touch sensing on up to 28 channels using the same pins as the ADC. The PIC32MX430F064HT-I/MR runs Microchip's mTouch CVD or SLD library to implement buttons, sliders, and proximity sensors, all without external touch ICs. The 16 KB SRAM is sufficient for a 16-channel touch panel plus USB status reporting. Compared with dedicated touch ICs, integrating CTMU saves $0.30-0.60 in BOM cost at modest volumes. Industrial temperature grade supports appliance front-panel designs in kitchen and HVAC equipment.
Recommended
Low-Cost Graphics HMI with External LCD Controller
The PIC32MX430F064HT-I/MR exposes a Parallel Master Port (PMP) that drives external LCD controllers such as the SSD1963 or RA8875 for QVGA/WQVGA TFT panels in 3.5-5 inch HMIs. The PMP supports 8/16-bit interfaces with dedicated DMA channels, freeing the core to handle button inputs, USB commands, and Modbus polling. 64 KB Flash fits typical HMI applications: menu system, fonts in external SPI Flash, USB firmware update, and Modbus slave stack. The wide 2.3-3.6 V supply simplifies direct 3.3 V panel backlight drive, and the 49 I/O lines support keypads and rotary encoders without external I/O expanders.
Recommended
Industrial Sensor Node with Modbus RTU
For industrial 4-20 mA loop powered or Modbus RTU sensor nodes, the PIC32MX430F064HT-I/MR delivers enough computation for sensor linearization, moving-average filtering, and Modbus protocol handling. Its 10-bit 1 Msps ADC with up to 28 channels supports multi-sensor conditioning through external muxes, and the 5 V-tolerant UART interfaces directly to RS-485 transceivers such as the MAX3485 or ISL3179. Industrial -40 C to +85 C temperature grade and wide 2.3-3.6 V supply tolerate real factory-floor environments. The 16 KB RAM accommodates Modbus buffers and floating-point filter math using the single-precision math library.
Recommended
USB Audio Class Device (Headset, Speaker Dock)
The PIC32MX430F064HT-I/MR supports USB Audio Class 1.0 device mode and exposes two I2S ports for connecting to external 16/24-bit DACs or ADCs, making it suitable for USB headsets, speaker docks, and digital microphones. The 100 MHz core is sufficient to handle USB isochronous transfers at 48 kHz stereo with underrun protection. Designers typically pair it with a stereo DAC like the PCM5101A or a codec such as the SGTL5000 for I2S audio playback. CTMU can also implement push-button playback control on the same die. Total BOM cost for a USB-to-I2S adapter lands under $4 in modest volumes.
Recommended
Consumer USB Mass Storage / MIDI Device
The integrated USB-OTG controller and dual SPI ports make the PIC32MX430F064HT-I/MR a good fit for USB Mass Storage or USB-MIDI device designs when paired with external SPI Flash or SD cards. The PMP can also interface to SD cards directly in SD mode for higher throughput. 64 KB Flash accommodates the USB stack plus FAT12/16/32 file system plus application logic. DMA channels handle the bulk transfer between USB endpoint memory and the SD card sector buffers, minimizing CPU overhead. The 5 V-tolerant I/O allows direct connection to MIDI DIN-5 jacks through opto-isolated receivers.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX430F064HT-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX430F064H-I/MR | PIC32MX330F064H-I/MR | PIC32MX350F128H-I/MR | PIC32MX370F512H-I/MR | PIC32MX250F256H-I/MR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-64 (9x9 mm) | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 128 KB | 512 KB | 256 KB |
| RAM | 16 KB | 16 KB | 8 KB | 32 KB | 128 KB | 64 KB |
| Maximum CPU Speed | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 120 MHz | 50 MHz |
| USB-OTG | Yes (Full-Speed) | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Approx. Unit Price (qty 1) | $7.10 | $6.95 (tray) | $5.85 | $8.20 | $11.40 | $6.60 |
Key Differentiators
- Lowest-cost USB-OTG MCU in 64 KB Flash tier (vs PIC32MX350F128H-I/MR)
- MIPS32 M4K ecosystem maturity vs Cortex-M0 learning curve (vs PIC32MX250F256H-I/MR)
- Industrial temperature range with CTMU included (vs PIC32MX330F064H-I/MR)
Design Notes
The 64-pin VQFN package has an exposed thermal pad (pin 65) that MUST be soldered to a ground plane with at least 8 thermal vias on a 1.2 mm pitch to achieve the rated 22 C/W thermal resistance. Without proper pad soldering, junction temperature rises 30-40% higher under identical load. Place a 4-layer PCB with dedicated ground plane; 2-layer designs suffer EMI on USB-OTG signal integrity due to insufficient return path.
Decouple every VDD/VSS pair (5 pairs total on this package) with a 100 nF X7R ceramic capacitor placed within 2 mm of the pin footprint. Add a single 4.7 uF X5R bulk capacitor near the package center. For USB-OTG designs, place an additional 100 uF bulk capacitor within 5 mm of the VBUS pin to handle the 500 mA inrush transient required by USB 2.0 specification.
Route USB D+/D- as a 90 ohm differential pair with matched length within 150 mil, and place the 15 kohm pulldowns on D+ and D- within 2 mm of the device pins (for full-speed device mode). Keep crystal traces within 5 mm of the OSC1/OSC2 pins and surround them with a ground guard ring. Avoid running digital signals under the crystal traces or USB pair to minimize coupling.
Do not configure the on-chip 1.8 V regulator's VCAP/VDDCORE pin as a GPIO - it is internally connected to the core logic. Floating the VCAP pin causes core voltage instability and random resets. Also ensure the MCLR pin has a 10 kohm pullup to VDD; floating MCLR causes unintended resets in noisy environments. The VUSB pin must be decoupled with 100 nF plus 4.7 uF for stable USB transceiver operation.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Industrial -40 C to +85 C temperature grade. Not AEC-Q100 qualified; for automotive designs use PIC32MX series with explicit AEC-Q100 part numbers.
