PIC32MX370F512LT-I/PF - 32-bit MCU 80MHz 512KB Flash 100-TQFP | Microchip
MPN: PIC32MX370F512LT-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.1 | $7.10 |
| 10 | $6.39 | $63.90 |
| 100 | $5.71 | $571.00 |
| 500 | $5.13 | $2,565.00 |
| 1,000 | $4.55 | $4,550.00 |
PIC32MX370F512LT-I/PF Overview
A 32-bit microcontroller is a programmable system-on-a-chip combining a high-performance data-path (32-bit registers, ALU and bus), on-chip non-volatile program memory, RAM, and dedicated peripherals (timers, ADC, communication controllers). Within the embedded hierarchy, the PIC32MX3xx/4xx family sits below Cortex-M3 class parts in raw core frequency but above 8-bit/16-bit MCUs in arithmetic throughput, code density and pointer reach, targeting HMI, USB, audio and graphics peripherals. The M4K core supports MIPS16e mode for compact code, single-cycle 32x16 MAC and two-cycle 32x32 multiply, and a 5-stage pipeline.
Headline specifications include 80 MHz core with 80 MIPS, 1.5 DMIPS/MHz, 512 KB Flash, 128 KB RAM, USB 2.0 FS OTG, CTMU touch support, and -40C to +85C industrial temperature range. The 100-pin TQFP offers ample GPIO (78 I/O pins) for human-machine interface and audio embedded designs requiring USB, multiple UARTs, and capacitive touch.
Typical applications include USB peripherals, capacitive touch keypads, low-cost HMI boards, graphics with PMP, USB audio DAC interfaces, and industrial control with mixed-signal I/O. Design considerations include proper 3.3V decoupling, 8 MHz crystal selection for the PLL to hit 80 MHz, and ensuring the VUSB 3.3V rail supplies the USB transceiver to meet USB 2.0 FS signaling compliance. This page synthesizes distributor pricing, drop-in same-package alternatives from the same Microchip PIC32MX3/4 family, and design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC32MX370F512LT-I/PF — 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 PIC32MX370F512LT-I/PF (same form factor and footprint) — differing in Package, ADC, Parallel Master Port (PMP), Core Architecture, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX370F512L-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX470F512LT-I/PF
✅ Drop-In✓ In Stock
$5.2 / Unit
View Datasheet →PIC32MX350F256LT-V/PF
✅ Drop-In✓ In Stock
$6.2 / Unit
View Datasheet →PIC32MX270F512LT-I/PF
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →PIC32MX170F512LT-I/PF
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →PIC32MX370F512L-I/TL
✅ Drop-In✓ In Stock
$5.31 / Unit
View Datasheet →PIC32MX370F512LT-I/PF Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 80 MHz |
| Performance | 100 DMIPS (1.25 DMIPS/MHz) |
| Program Flash | 512 KB (512K x 8) |
| Data Flash | 12 KB (not user-accessible on this part) |
| SRAM | 128 KB |
| Operating Voltage | 2.3V to 3.6V (typical 2.5V / 3.3V) |
| I/O Pins | 78 |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| SPI / I2S | 2 modules (SPI with I2S mode) |
| I2C | 2 modules |
| UART | 5 modules |
| ADC | 10-bit, 1 MSPS, up to 28 channels |
| Analog Comparators | 2 |
| CTMU (Capacitive Touch) | Yes |
| Parallel Master Port (PMP) | Yes (for graphics/parallel bus) |
| Timers | 5 x 16-bit or 2 x 32-bit |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| Package | 100-pin TQFP (14x14 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC32MX370F512LT-I/PF 100-pin tqfp (14x14 mm, 0.5 mm pitch) Pin Configuration Guide
Pin configuration for PIC32MX370F512LT-I/PF (100-pin tqfp (14x14 mm, 0.5 mm pitch) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX370F512LT-I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX370F512LT-I/PF is suitable for 6 applications: USB Peripherals and HID Devices, Human-Machine Interface (HMI) and Graphics, Capacitive Touch Keypads, Industrial Control and Data Acquisition, USB Audio Interfaces and DACs, IoT Edge Devices and Sensor Hubs.
USB Peripherals and HID Devices
The PIC32MX370F512LT-I/PF is engineered for USB peripheral and Human Interface Device (HID) class products: the USB 2.0 Full-Speed OTG controller combined with 80 MHz MIPS32 M4K core, 512 KB Flash, and 128 KB SRAM enables USB HID keyboards/mice, CDC virtual COM ports, and MSD mass-storage devices. Placed as the main MCU with 3.3V regulated VUSB rail and 0.1uF/1uF ceramic bypass; the integrated USB transceiver eliminates external PHY chips, reducing BOM cost and PCB area. Per the Microchip PIC32MX3/4 datasheet DS60001185H, the device supports USB device, host, and OTG roles with up to five endpoints for compound devices.
Recommended
Human-Machine Interface (HMI) and Graphics
The PIC32MX370F512LT-I/PF is well-suited for Human-Machine Interface (HMI) panels with graphical displays: the Parallel Master Port (PMP) interface connects to TFT LCD controllers, while 512 KB Flash and 128 KB SRAM hold graphics assets, fonts, and menus. The 80 MHz M4K core delivers 100 DMIPS for responsive touch UI, and the 10-bit 1 MSPS ADC can read resistive-touch voltage dividers directly. Per PIC32MX3/4 datasheet DS60001185H, PMP supports 8-bit or 16-bit wide parallel bus for fast LCD refresh without external address-latch chips.
Recommended
Capacitive Touch Keypads
The PIC32MX370F512LT-I/PF excels in capacitive touch keypad designs thanks to its integrated Charge Time Measurement Unit (CTMU): the CTMU provides accurate time-domain capacitance measurement via constant current source and Timer1 capture, enabling reliable touch sensing through glass, plastic, or metal overlays. With up to 78 I/O pins available in the TQFP-100 package, designers can implement 32+ button matrices, slider bars, and proximity sensors without external touch controllers. Per Microchip datasheet DS60001185H, CTMU-driven touch libraries (mTouch) are available free with MPLAB X IDE.
Recommended
Industrial Control and Data Acquisition
The PIC32MX370F512LT-I/PF fits industrial control and data-acquisition systems: the 10-bit 1 MSPS ADC with up to 28 input channels, two analog comparators, and 5 UART ports connect to multiple sensor buses simultaneously. The industrial -40C to +85C temperature range and 3.3V operation match typical factory automation rails, and the 512 KB Flash stores calibration tables and protocol stacks (Modbus RTU, custom fieldbus). Per Microchip PIC32MX3/4 datasheet DS60001185H, the ADC supports both manual and automatic scan modes with DMA for low-CPU-overhead acquisition.
Recommended
USB Audio Interfaces and DACs
The PIC32MX370F512LT-I/PF is well-matched to USB audio class (UAC) interfaces and external DAC control: the USB 2.0 FS OTG controller plus I2S module provides USB audio streaming to external DAC chips while the 80 MHz core runs sample-rate conversion, mixing, and effects processing. The 128 KB SRAM buffers USB isochronous packets at 48 kHz/24-bit without underflow, and the flexible I/O matrix routes I2S clocks (BCLK, LRCK, SDATA) to GPIO for external DAC connection. Per PIC32MX3/4 datasheet DS60001185H, the SPI peripheral supports I2S mode natively, simplifying audio data transport.
Recommended
IoT Edge Devices and Sensor Hubs
The PIC32MX370F512LT-I/PF serves as a sensor-hub MCU in IoT edge devices: the multiple serial interfaces (5 UART, 2 I2C, 2 SPI/I2S) connect to environmental sensors, accelerometers, BLE modules, and Wi-Fi co-processors. The 80 MHz / 100 DMIPS core runs TLS stacks, sensor-fusion algorithms, and JSON serialization at acceptable throughput, and 128 KB RAM holds TLS session buffers. Per Microchip datasheet DS60001185H, the part supports MPLAB Harmony v3 framework with TCP/IP, WolfSSL, and AWS IoT libraries for cloud connectivity.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX370F512LT-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX370F512L-I/PF | PIC32MX470F512LT-I/PF | PIC32MX350F256LT-V/PF | PIC32MX270F512LT-I/PF | PIC32MX170F512LT-I/PF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (14x14) | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same |
| Maximum Core Frequency | 80 MHz / 100 DMIPS | 80 MHz / 100 DMIPS | 120 MHz / 150 DMIPS | 80 MHz / 100 DMIPS | 80 MHz / 100 DMIPS | 50 MHz / 62.5 DMIPS |
| Flash Program Memory | 512 KB | 512 KB | 512 KB | 256 KB | 512 KB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB | 64 KB |
| USB | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device | USB 2.0 FS Device/Host/OTG |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C |
| Approx. 1000-piece price (USD) | $4.55 | $4.55 | $5.80 | $4.20 | $3.85 | $3.60 |
| Packaging Format | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Integrated USB 2.0 FS OTG with on-chip transceiver (vs PIC32MX270F512LT-I/PF)
- 80 MHz / 100 DMIPS core vs lower-tier options (vs PIC32MX170F512LT-I/PF)
- 128 KB SRAM vs 64 KB on lower-tier (vs PIC32MX270F512LT-I/PF)
Design Notes
Decouple VDDCORE with 1x 10uF + 1x 0.1uF ceramic placed within 5mm of the VDD/VSS pin pair. Provide a separate analog AVDD/AVSS rail pair with its own 10uF + 0.1uF for ADC accuracy. The USB VUSB pin requires a dedicated 3.3V LDO output and a 0.1uF + 1uF ceramic to ground at the MCU body. Per Microchip PIC32MX3/4 datasheet DS60001185H, sharing the VUSB and VDD rails without a ferrite bead can cause USB enumeration failures at 12 Mbps Full-Speed.
Place the 8 MHz primary oscillator crystal within 5mm of the OSC1/OSC2 pins, with a grounded guard ring on both sides and a clean ground plane below. Estimated: stray capacitance above 5 pF between crystal traces and adjacent signals reduces loop gain and may fail oscillator startup at -40C. Keep high-frequency signals (USB DP/DM, SPI SCK at >20 MHz) at least 3x trace-widths away from the crystal traces to avoid injection locking.
Do not enable the USB module before the VUSB rail reaches 3.0V or after the PLL has stabilized - the USB transceiver will fail to enumerate. The JTAG pins (TCK, TMS, TDI, TDO) double as GPIO; lock JTAGEN in the configuration register to avoid accidental re-purpose during runtime. Programming via ICSP requires the PGD/PGC pins to be released from peripheral use during reset; configure them as digital inputs in firmware before exiting reset.
The USB DP/DM differential pair must be routed with 90-ohm differential impedance and matched length within 2mm to comply with USB 2.0 Full-Speed signal-integrity requirements. Estimated: a mismatched pair causes common-mode conversion and EMI failures during USB compliance tests. Series ferrite beads on VUSB supply are not required for Full-Speed but reduce conducted emissions on bus-powered designs.
Compliance Information
RoHS compliant per Microchip product page. REACH compliant per Abacus Technologies cross-reference listing. Not AEC-Q100 qualified (consumer/industrial grade). For automotive, consider PIC32MX370F512L-E/PF or -V/PF wide-temperature variants.
