PIC32MX340F128LT-80V/BG - 80MHz 32-bit MCU 128KB Flash TFBGA-121 | Microchip
MPN: PIC32MX340F128LT-80V/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.58 | $75.80 |
| 100 | $6.74 | $674.00 |
| 500 | $6.05 | $3,025.00 |
| 1,000 | $5.42 | $5,420.00 |
PIC32MX340F128LT-80V/BG Overview
What is a PIC32MX microcontroller? The PIC32MX family is Microchip's line of 32-bit MIPS microcontrollers that bridges 8/16-bit PIC and 32-bit ARM worlds. These MCUs sit in the broader taxonomy of microcontrollers (MCU) -> 32-bit MCU -> MIPS-based MCU -> embedded controller. PIC32MX parts use the MIPS32 M4K core with 5-stage pipeline, hardware multiply/divide, and a peripheral set optimized for cost-effective embedded designs requiring USB and CAN connectivity. The 340 sub-family adds USB 2.0 Full-Speed OTG and enhanced analog peripherals.
Key features of the PIC32MX340F128LT-80V/BG include 128 KB Flash, 32 KB SRAM, 53 user I/O pins (per the VFQFN-64 datasheet column; the 121-TFBGA pinout exposes more I/O channels), five 16-bit timers/counters, two I2C, two SPI, two UART modules, Parallel Master Port (PMP), and a 16-channel 10-bit 1 Msps ADC. The 80 MHz core delivers 1.56 DMIPS/MHz, supporting DSP-like operations through the MIPS DSP ASE extension.
Typical applications include industrial control panels, USB peripherals (HID, CDC, mass storage), home appliance user interfaces, motor-control front-ends, low-cost graphical displays with PMP, and CAN gateway nodes when paired with an external MCP2515. The integrated USB Full-Speed OTG controller eliminates external PHY cost for HID, CDC, and MSD device classes.
When designing with this device, allocate the 121-ball BGA escape routing carefully because the 10x10 mm TFBGA-121 package requires 0.8 mm pitch fanout traces. Ensure the 2.5V or 3.3V core VDD is decoupled with 100 nF + 4.7 uF ceramic capacitors close to each VDDCORE pin to meet the 80 MHz switching-noise budget.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design considerations that are not consolidated in any single manufacturer datasheet or distributor listing.
Drop-in alternatives for PIC32MX340F128LT-80V/BG — 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 PIC32MX340F128LT-80V/BG (same form factor and footprint) — differing in ADC, Operating Temperature, Core Architecture, DMA Channels, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX340F128L-80V/BG
✅ Drop-In✓ In Stock
$4.78 / Unit
View Datasheet →PIC32MX340F128L-80I/BG
✅ Drop-In✓ In Stock
$5.48 / Unit
View Datasheet →PIC32MX340F128HT-80V/PT
✅ Drop-In✓ In Stock
$5.6 / Unit
View Datasheet →PIC32MX340F128H-80V/MR
✅ Drop-In✓ In Stock
$3.72 / Unit
View Datasheet →PIC32MX340F128HT-80I/MR
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →PIC32MX340F128HT-80V/MR
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →PIC32MX340F128LT-80V/BG Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K (32-bit RISC, 5-stage pipeline) |
| Maximum Clock Speed | 80 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage | 2.5 V or 3.3 V |
| I/O Pins | 53 (per datasheet VFQFN-64 column); TFBGA-121 package exposes additional pins |
| ADC | 10-bit, 16-channel, up to 1 Msps |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Timers | 5 x 16-bit Timer/Counter |
| UART Modules | 2 |
| I2C Modules | 2 |
| SPI Modules | 2 |
| Parallel Master Port (PMP) | Yes |
| DMA Channels | Yes |
| Package | 121-ball TFBGA, 10 x 10 mm, 0.8 mm pitch |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +105C (industrial, per -V suffix) |
| RoHS Status | Compliant |
PIC32MX340F128LT-80V/BG 121-ball tfbga, 10 x 10 mm, 0.8 mm pitch Pin Configuration Guide
Pin configuration for PIC32MX340F128LT-80V/BG (121-ball tfbga, 10 x 10 mm, 0.8 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 PIC32MX340F128LT-80V/BG.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX340F128LT-80V/BG is suitable for 7 applications: USB HID Peripheral Devices, Industrial Control Panel HMI, Home Appliance User Interface, USB Mass Storage Device (MSD), CAN Gateway / Industrial Sensor Hub, Audio Player / Consumer Audio Device, Motor Control Front-End (FOC / 6-step).
USB HID Peripheral Devices
The PIC32MX340F128LT-80V/BG integrates a USB 2.0 Full-Speed device controller with on-chip transceiver, removing BOM cost for external PHY ICs. Its 80 MHz MIPS32 M4K core handles USB HID class descriptors, polling intervals, and report generation in firmware. The 32 KB SRAM is well-suited to multi-endpoint HID buffers, while 128 KB Flash stores bootloader, application, and string tables. The 121-TFBGA footprint enables compact keyboard, mouse, gamepad, and custom-HID product designs. Compared to an external-FET solution, this builds on the die's integrated transceiver to reduce PCB area by roughly 30%.
Recommended
Industrial Control Panel HMI
At 80 MHz, the PIC32MX340F128LT-80V/BG drives Parallel Master Port (PMP) TFT graphical displays while sampling the 16-channel 10-bit ADC for sensor inputs. Its 128 KB Flash supports full LVGL or Microchip-GUI frameworks, and 32 KB SRAM holds framebuffer and widget state. The -40C to +105C industrial temperature grade ('V' suffix) suits factory-floor enclosures and outdoor control cabinets. The integrated USB OTG enables firmware provisioning without JTAG. Compared to a Cortex-M0 solution, this builds on the MIPS DSP-ASE for FFT-based vibration analysis on the same die.
Recommended
Home Appliance User Interface
The PIC32MX340F128LT-80V/BG supports capacitive-touch I/O expansion via the PMP bus and drives segmented or graphical LCDs in washing machines, ovens, and air conditioners. Its 80 MHz core runs UI state machines, while 2 UART, 2 SPI, and 2 I2C interface with motor controllers, sensor hubs, and BLE modules. The 121-TFBGA 10x10 mm package fits slim appliance front panels. The 128 KB Flash stores multi-language UI assets. Compared to an 8-bit PIC16/PIC18 solution, this builds on the 32-bit MIPS core to deliver 5x faster screen-redraw performance.
Recommended
USB Mass Storage Device (MSD)
The PIC32MX340F128LT-80V/BG's USB 2.0 Full-Speed OTG controller implements USB Mass Storage Class (MSC) for removable storage, datalogger, or firmware-stick applications. The 32 KB SRAM handles SCSI command blocks, while 128 KB Flash holds FAT32 driver, USB stack, and bootloader. The integrated DMA engine offloads bulk-endpoint packet transfers, freeing the CPU for filesystem operations. The 80 MHz MIPS core delivers enough throughput for sequential read/write at USB Full-Speed rates. Compared to an external-FTDI bridge, this builds on the die to cut BOM and PCB area by ~40%.
Recommended
CAN Gateway / Industrial Sensor Hub
When paired with an external MCP2515 CAN controller over SPI, the PIC32MX340F128LT-80V/BG acts as a CAN-to-UART or CAN-to-USB gateway in factory automation, smart metering, and elevator controllers. The 80 MHz MIPS32 M4K core runs CANopen or J1939 protocol stacks, while 32 KB SRAM holds transmit/receive buffers. The industrial -40C to +105C temperature grade ('V' suffix) meets IEC 60068 environmental specs. The 121-TFBGA package fits compact DIN-rail modules. Compared to a discrete MCU + FPGA solution, this builds on the die to consolidate control and connectivity.
Recommended
Audio Player / Consumer Audio Device
The PIC32MX340F128LT-80V/BG's 1 Msps 10-bit ADC and I2S-capable SPI module support audio playback and decoding for low-cost MP3 or WAV player designs. Its 80 MHz MIPS core runs software codecs (WAV, ADPCM) while 128 KB Flash stores audio assets. The 32 KB SRAM provides playback buffers for seamless streaming. USB 2.0 Full-Speed enables file transfer from a host PC. The 121-TFBGA package fits compact consumer-audio enclosures. Compared to a dedicated DSP, this builds on the MIPS DSP-ASE extensions for software-based audio DSP without extra hardware cost.
Recommended
Motor Control Front-End (FOC / 6-step)
The PIC32MX340F128LT-80V/BG's 80 MHz MIPS32 M4K core and DSP-ASE extension execute Field-Oriented Control (FOC) or 6-step commutation algorithms for BLDC and PMSM motors up to several kW. Its 1 Msps 10-bit ADC samples phase currents and back-EMF; 5 timers generate complementary PWM with deadband. The 121-TFBGA package supports compact motor-driver integration. The -40C to +105C industrial grade meets motor-drive thermal specs. Compared to an 8-bit PIC18 solution, this builds on the 32-bit DSP-ASE to deliver roughly 10x faster control-loop execution.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX340F128LT-80V/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX340F128L-80V/BG | PIC32MX340F128L-80I/BG | PIC32MX340F128HT-80V/PT | PIC32MX340F128H-80V/MR |
|---|---|---|---|---|---|
| Package | 121-TFBGA (10x10 mm) | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Clock | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz | MIPS32 M4K / 80 MHz |
| Flash / SRAM | 128 KB / 32 KB | 128 KB / 32 KB | 128 KB / 32 KB | 128 KB / 32 KB | 128 KB / 32 KB |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +105C | -40C to +105C |
| Packaging Format | Tape & Reel (T) | Tray (L) | Tray (L) | Tape & Reel (T) | Tray (H) |
| USB 2.0 FS OTG | Yes | Yes | Yes | Yes | Yes |
| 10-bit ADC | 16-channel, 1 Msps | 16-channel, 1 Msps | 16-channel, 1 Msps | 16-channel, 1 Msps | 16-channel, 1 Msps |
Key Differentiators
- Integrated USB 2.0 Full-Speed OTG with on-chip transceiver (vs PIC32MX230F064D-I/ML (28-pin MCU without USB))
- Highest pin count in PIC32MX340 family for BGA footprints (vs PIC32MX320F128L-80V/BG (64-VFQFN variant of family))
- Industry-standard industrial -40C to +105C temperature grade (vs PIC32MX340F128L-80I/BG (-40C to +85C variant))
- 128 KB Flash and 32 KB SRAM with 80 MHz MIPS32 M4K core (vs PIC32MX230F128L-V/PF (lower-cost same-family variant))
Design Notes
The 121-TFBGA package uses 0.8 mm ball pitch on a 10x10 mm body. PCB layout must use HDI (microvia) stack-up with via-in-pad or dog-bone fanout to escape the inner balls. Keepout zones for ground/power planes must respect 0.4 mm annular ring clearance. Place 100 nF + 4.7 uF X7R 0402/0603 ceramic bypass capacitors within 2 mm of each VDDCORE/VSS pin pair. The USB D+/D- traces should be 90 ohm differential with length matching to within 150 mil.
The PIC32MX340F128LT-80V/BG can run core and I/O from a single 3.3V rail if VDDCORE is tied to VDDIO. For lower-power designs, drive VDDCORE from a separate 2.5V regulator (e.g., MCP1700) and VDDIO from 3.3V; this lowers dynamic current draw by ~30% at 80 MHz. The internal 1.8V regulator output on the ENVREG pin requires a 10 uF X5R output capacitor. Brown-out Reset (BOR) and Power-on Reset (POR) thresholds should be configured in the DEVCFG0 fuse register for the target supply tolerance.
At 80 MHz and 3.3V core voltage, the PIC32MX340F128LT-80V/BG typically draws ~70 mA active current and ~30 mA in Idle, generating roughly 230 mW of dissipation. The TFBGA-121 package has theta_JA around 35 C/W on a 4-layer JEDEC test PCB, yielding a 36C junction temperature rise above ambient at room temperature. The -40C to +105C industrial grade ('V' suffix) leaves 65C margin above a 70C ambient - sufficient for industrial control panels and outdoor enclosures without external heatsinking.
Do not confuse the -V and -I temperature suffixes: 'V' = -40C to +105C (industrial wide), 'I' = -40C to +85C (industrial). Selecting -I in an outdoor design will trigger thermal failure. The 'T' suffix in PIC32MX340F128LT is the tape-and-reel packaging code; PIC32MX340F128L is the tray version - same die, same PCB footprint. When migrating to PIC32MX270F256 series for more Flash/RAM, confirm ICSP and JTAG pinout compatibility, as the 270 family may use alternate debug pin assignments.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Lead-free reflow profile per J-STD-030. Halogen-free status to be confirmed via Microchip product declaration letter.
