PIC32MX764F128LT-I/BG - 32-bit 80MHz MCU, 128KB Flash, USB/CAN/ETH | Microchip
MPN： PIC32MX764F128LT-I/BG ✓ 啟用中PIC32MX764F128LT-I/BG 概覽
A 32-bit microcontroller (MCU) is an integrated circuit that combines a high-performance processor core, program memory (Flash), data memory (SRAM), and a rich set of on-chip peripherals. PIC32MX5/6/7 devices sit within the broader microcontroller hierarchy: MCU -> 32-bit MCU -> MIPS-based MCU -> PIC32MX family -> industrial/connectivity segment. This taxonomy matters because the PIC32MX764F128LT-I/BG targets the embedded-connectivity sub-tree, combining deterministic real-time control with wired networking stacks that 8-bit and 16-bit MCUs cannot host efficiently.
Key features of the PIC32MX764F128LT-I/BG include an 80 MHz core with 1.56 DMIPS/MHz, 128 KB single-cycle-access Flash with prefetch cache to hide flash latency, 32 KB SRAM, four DMA channels for peripheral-to-memory transfers without CPU intervention, and a 16-bit Parallel Master Port (PMP) for external bus expansion. Communication peripherals include USB 2.0 full-speed On-The-Go, CAN 2.0b, 10/100 Mbps Ethernet MAC with MII/RMII interfaces, four UARTs, three SPI/I2S interfaces, and two I2C buses. The industrial -40C to +85C operating range suits factory and outdoor enclosures.
The PIC32MX764F128LT uses the MIPS M4K 32-bit RISC core with 5-stage pipeline and hardware multiply/divide. A Flash prefetch module plus 16-bit prefetch cache provide zero-wait-state execution from Flash under most code-flow patterns, helping the 80 MHz core sustain close to its theoretical throughput despite the slow Flash access time typical of embedded Flash processes. The peripheral DMA engine is an architectural advantage: high-bandwidth streams (Ethernet, USB, ADC) move data autonomously, freeing the CPU for protocol and application logic.
Typical applications include industrial Ethernet gateways, factory-automation PLCs, building-automation controllers, USB-to-UART bridges, CAN-based motor-control nodes, and embedded web servers. Engineers select this device when the application needs simultaneous Ethernet + CAN + USB connectivity without an external PHY-rich companion IC, plus enough Flash for TCP/IP stacks such as Microchip's MPLAB Harmony Net.
When designing with this device, ensure that the TFBGA-121 footprint is layout-friendly - the 0.8 mm ball pitch requires laser-drilled or fine-pitch PCBs and proper microvia stackups. Designers must plan supply decoupling around each VDD/VSS pair as documented in the datasheet, and use the MPLAB X IDE plus Harmony framework for firmware development.
This page synthesizes current distributor pricing, drop-in Microchip same-family alternatives, and practical layout/thermal notes not consolidated on any single manufacturer page.
直接替換替代品，適用於 PIC32MX764F128LT-I/BG — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC32MX764F128LT-I/BG （相同外形與佔位） — 差異在於 ADC, Package, Timers, USB, DMA Channels.
PIC32MX764F128L-I/BG
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX764F128HT-V/MR
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX695F512L-80I/BG
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX675F512L-80I/BG
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX564F128L-I/BG
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX764F128LT-I/BG 最大額定值與電氣特性
| Core Architecture | MIPS32 M4K (32-bit RISC) |
| CPU Frequency | 80 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Flash Memory | 128 KB (128K x 8) |
| SRAM | 32 KB (32K x 8) |
| Number of I/O Pins | 53 |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| DMA Channels | 4 |
| USB | USB 2.0 Full-Speed + OTG |
| CAN | CAN 2.0b |
| Ethernet | 10/100 Mbps MAC (MII/RMII) |
| UART | 4 |
| SPI | 3 (with I2S) |
| I2C | 2 |
| Parallel Master Port | 16-bit PMP |
| Timers | 5 (16-bit) |
| ADC | 16-channel 10-bit, 1 Msps |
| 封裝 | 121-TFBGA (10x10 mm, 0.8 mm pitch) |
| 工作溫度 | -40C to +85C (Industrial) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC32MX764F128LT-I/BG 121-tfbga (10x10 mm, 0.8 mm pitch) 腳位配置指南
PIC32MX764F128LT-I/BG（121-tfbga (10x10 mm, 0.8 mm pitch) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC32MX764F128LT-I/BG.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC32MX764F128LT-I/BG 適用於 7 應用s: Industrial Ethernet Gateway, Building Automation Controller, USB-to-UART / USB-to-CAN Bridge, Embedded Web Server / IoT Node, CAN-Based Motor-Control Node, Data-Acquisition Front-End with Ethernet, Automotive Diagnostic Interface (non-AEC-Q100).
Industrial Ethernet Gateway
The PIC32MX764F128LT-I/BG's integrated 10/100 Ethernet MAC plus 80 MHz MIPS core makes it well suited for industrial Ethernet-to-serial gateways bridging Modbus TCP, EtherNet/IP, or PROFINET to RS-485 fieldbuses. With 128 KB Flash and 32 KB SRAM it runs Microchip's MPLAB Harmony TCP/IP stack while leaving room for application logic. The four DMA channels offload Ethernet packet movement so the CPU stays free for protocol parsing. The 121-TFBGA package supports the -40C to +85C industrial temperature range required for factory-floor enclosures.
推薦
Building Automation Controller
The PIC32MX764F128LT-I/BG is a strong fit for BACnet or KNX building-automation controllers because it carries CAN 2.0b plus Ethernet plus USB-OTG on-chip, eliminating external PHY-rich companion ICs. Its 80 MHz core can execute a BACnet/IP stack plus scheduling logic within the 128 KB Flash budget. The 53 GPIO pins drive relays, triacs, and 0-10 V dimming outputs without external I/O expanders. Industrial -40C to +85C operation tolerates rooftop and basement enclosures.
推薦
USB-to-UART / USB-to-CAN Bridge
The PIC32MX764F128LT-I/BG's USB 2.0 full-speed OTG plus CAN 2.0b plus four UARTs make it a versatile industrial bridge controller. It can present a CDC-ACM USB device on one side and either a CAN bus or RS-485/RS-232 on the other, with all DMA-driven. The 32 KB SRAM buffers USB and CAN traffic without CPU intervention, and 128 KB Flash holds USB descriptors plus the CDC/CAN state machines. Designers use the PIC32 USB stack from MPLAB Harmony to shorten firmware development.
推薦
Embedded Web Server / IoT Node
The PIC32MX764F128LT-I/BG can host a lightweight HTTP server with REST endpoints for sensor data, using the integrated Ethernet MAC plus the 80 MHz CPU. The 128 KB Flash fits Microchip's Harmony Net HTTP server demo, and 32 KB SRAM holds TCP socket buffers. The four DMA channels keep Ethernet throughput high while the CPU services application logic. Industrial temperature support lets the node sit in unheated outdoor enclosures.
推薦
CAN-Based Motor-Control Node
For CANopen or DeviceNet motor-drive peripherals, the PIC32MX764F128LT-I/BG's CAN 2.0b interface and five 16-bit timers support PWM generation plus CANopen state-machine handling. The 53 GPIO pins drive gate drivers, Hall sensors, and QEI inputs. The 80 MHz core sustains 1.56 DMIPS/MHz, sufficient for torque-loop math at low PWM frequencies. Industrial -40C to +85C operation handles drive-cabinet ambient temperatures.
推薦
Data-Acquisition Front-End with Ethernet
The PIC32MX764F128LT-I/BG's 16-channel 10-bit 1 Msps ADC plus Ethernet MAC lets it digitize analog signals and stream samples over TCP/IP. The four DMA channels pump ADC conversions directly into SRAM buffers, offloading the CPU. 128 KB Flash fits the TCP/IP stack plus calibration tables. The 121-TFBGA package is suitable for high-density DAQ boards where analog and digital grounds can be carefully partitioned under the BGA.
推薦
Automotive Diagnostic Interface (non-AEC-Q100)
For non-safety automotive diagnostic tools (OBD-II scan tools, factory programming fixtures), the PIC32MX764F128LT-I/BG offers USB 2.0 OTG plus CAN 2.0b in a single chip. Its 80 MHz core and 32 KB SRAM can run a CAN/K-Line stack plus a USB CDC device. Note that the 'I' industrial grade is -40C to +85C, not AEC-Q100, so this device is for off-vehicle service tools, not in-vehicle ECUs. Designers needing AEC-Q100 should pick a different MCU.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX764F128LT-I/BG — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC32MX764F128L-I/BG | PIC32MX695F512L-80I/BG | PIC32MX675F512L-80I/BG | PIC32MX564F128L-I/BG |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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 |
| Flash Memory | 128 KB | 128 KB | 512 KB | 512 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 128 KB | 64 KB | 32 KB |
| CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| USB 2.0 OTG | Yes | Yes | Yes | No | No |
| CAN 2.0b | Yes | Yes | Yes | Yes | Yes |
| Ethernet MAC | 10/100 Mbps (MII/RMII) | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | No |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
主要差異化特點
- Triple on-chip wired connectivity (USB+CAN+ETH) (對比PIC32MX564F128L-I/BG)
- Best price-per-Flash with full wired stack (對比PIC32MX695F512L-80I/BG)
- Same-footprint migration path within family (對比PIC32MX675F512L-80I/BG)
設計說明
The 121-TFBGA package uses a 0.8 mm ball pitch, which demands a PCB with laser-drilled microvias or fine-pitch via-in-pad stackups. Standard 4-layer FR-4 with 0.2 mm via drill and 0.4 mm pad is generally workable but requires tight design-rule checks. Plan a continuous ground plane beneath the BGA to provide a low-impedance return path for the high-speed Ethernet and USB signals. Route MII/RMII traces as length-matched 50 ohm single-ended pairs and keep them away from the ADC analog inputs.
Place one 100 nF ceramic decoupling capacitor on each VDD/VSS pair as close as possible to the balls. Add a single 10 uF tantalum or ceramic bulk capacitor near the package supply pin to supply the transient current peaks when Ethernet and USB transmit simultaneously. The internal 1.2 V regulator needs a 4.7 uF capacitor on the VDDcore pin per the datasheet. Poor decoupling is the most common cause of unstable Ethernet PHY link on this device.
Estimated: at 80 MHz with all peripherals active and Ethernet+USB transmitting, core current is approximately 70 mA from VDD (3.3 V), giving about 230 mW dissipation. The TFBGA-121 theta_JA is roughly 25 C/W on a 4-layer PCB, so junction temperature rise above ambient is about 5-6 C. This is well within the 85 C industrial limit; no heatsink is required. However, designers should still measure the PCB temperature under worst-case load to confirm margin.
Do not assume the PIC32MX764F128LT-I/BG is AEC-Q100 qualified - it is industrial grade only and is NOT suitable for in-vehicle ECUs. When migrating firmware between PIC32MX5/6/7 variants, double-check the peripheral count: some variants drop USB-OTG or Ethernet. Always define the configuration bits in code (DEVCFG0/1/2/3) before any code execution; missing configuration bits leave the device in a default state and can lock out debugging.
合規資訊
RoHS compliant per Microchip product page. 'I' suffix is industrial grade -40C to +85C, NOT AEC-Q100. For AEC-Q100 automotive parts look at PIC32MX1xxx/2xxx families.