PIC32MX120F032DT-50I/ML - 50MHz 32-bit MCU, 32KB Flash | Microchip
料号： PIC32MX120F032DT-50I/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.66 | $4.66 |
| 10 | $4.2 | $42.00 |
| 100 | $3.64 | $364.00 |
| 500 | $3.04 | $1,520.00 |
| 1,000 | $2.62 | $2,620.00 |
PIC32MX120F032DT-50I/ML 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, and a rich set of peripherals on one die. PIC32MX parts sit in the broader hierarchy of 32-bit microcontrollers -> RISC microcontrollers -> embedded processors -> semiconductors. The PIC32 family uses the MIPS32 M4K architecture, which provides single-cycle hardware multiply/accumulate and a deterministic instruction pipeline well suited to real-time control loops. The 'F' in 'F032' marks Flash-based program memory, while '032' quantifies the Flash density in KB.
Key features of this device include the MIPS M4K core delivering 50 DMIPS of throughput, Peripheral Pin Select (PPS) for flexible I/O mapping, two I2S/SPI modules for codec interfacing, a Parallel Master Port (PMP) for graphics or external memory, and a Charge Time Measurement Unit (CTMU) for mTouch capacitive touch sensing. The device also integrates a 10-bit ADC, multiple UART/I2C/SPI peripherals, five 16-bit timers/counters, and a real-time clock calendar. Boundary-scan (JTAG) and two programming/debug interfaces (ICSP and JTAG) are supported.
Architecturally, the PIC32MX1XX/2XX family uses Harvard memory separation with separate Flash and SRAM buses, hardware multiply/divide, and a tightly coupled interrupt controller that yields low-latency response. The 50 MHz core at 1.5 DMIPS/MHz provides roughly 75 DMIPS, ample headroom for PID loops, USB device stacks (where present), and small graphics rendering tasks. PPS allows remapping of nearly every digital peripheral to most digital I/O pins, simplifying PCB routing in space-constrained designs.
Typical applications include consumer appliances, low-cost graphical user interfaces, USB-device-capable nodes, sensor hubs, mTouch capacitive button panels, and industrial monitoring. The 32 KB Flash / 8 KB SRAM envelope is sufficient for state-machine control plus a small RTOS, while the 44-QFN footprint fits handhelds and compact industrial modules. Engineers often pair this MCU with the PIC32 family's MPLAB Harmony framework and a small external EEPROM or crypto companion.
A key design consideration is the supply voltage: parts in this family are NOT 5 V tolerant on I/O and must be powered between 2.3 V and 3.6 V. When migrating legacy 8-bit PIC designs, plan for a 3.3 V LDO and review the PPS mappings to avoid remapping conflicts during bring-up.
This page synthesizes current distributor pricing, drop-in same-family alternatives, and practical design notes that complement - but do not replace - the manufacturer datasheet.
直接替换替代料： PIC32MX120F032DT-50I/ML ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX120F032DT-50I/ML （相同外形与封装尺寸） ——差异在于 ADC, Core Architecture, Timers, Package, DMA Channels.
快速对比工具——选择替代料号进行并排对比：
PIC32MX120F032DT-I/ML
✅ 直接替换✓ 有现货
$1.92 / 个
查看数据手册 →PIC32MX120F032BT-50I/ML
✅ 直接替换✓ 有现货
$1.55 / 个
查看数据手册 →PIC32MX120F032D-I/ML
✅ 直接替换✓ 有现货
$1.95 / 个
查看数据手册 →PIC32MX120F032B-I/ML
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC32MX130F064BT-50I/ML
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC32MX130F064B-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX120F032DT-50V/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX120F032DT-50I/ML 最大额定值与电气特性
| Core Architecture | MIPS32 M4K |
| Core Count | Single-core |
| 数据总线宽度 | 32-bit |
| Maximum CPU Frequency | 50 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Supply Voltage Range | 2.3 V to 3.6 V |
| 工作温度范围 | -40 C to +85 C (industrial, 'I') |
| 封装 | 44-pin QFN (8x8 mm) with exposed pad |
| 安装类型 | Surface Mount |
| Packaging Media | Tape and Reel ('T' suffix) |
| I/O Pins | 34 (approx.) |
| ADC | 10-bit (per family datasheet) |
| Communication Peripherals | UART, I2C, SPI, I2S |
| Special Features | Peripheral Pin Select (PPS), Parallel Master Port (PMP), CTMU for mTouch |
| RoHS 状态 | Compliant |
PIC32MX120F032DT-50I/ML 引脚配置
| 引脚 1 | RP15/PWM1L/PMD5/RB15 — PPS-mappable I/O / PWM / PMP data |
| 引脚 2 | RP14/PWM1H/PMD4/RB14 — PPS-mappable I/O / PWM / PMP data |
| 引脚 3 | VSS — Ground reference |
| 引脚 4 | RP13/PMD3/RB13 — PPS-mappable I/O / PMP data |
| 引脚 5 | RP12/PMD2/RB12 — PPS-mappable I/O / PMP data |
| 引脚 6 | RP11/PMD1/RB11 — PPS-mappable I/O / PMP data |
| 引脚 7 | RP10/PMD0/RB10 — PPS-mappable I/O / PMP data |
| 引脚 8 | VDD — Digital supply, 2.3 V to 3.6 V |
| 引脚 9 | RP9/PMCS1/RB9 — PPS-mappable I/O / PMP chip select 1 |
| 引脚 10 | RP8/PMCS2/RB8 — PPS-mappable I/O / PMP chip select 2 |
| 引脚 11 | RP7/PMRD/RB7 — PPS-mappable I/O / PMP read strobe |
| 引脚 12 | RP6/PMWR/RB6 — PPS-mappable I/O / PMP write strobe |
| 引脚 13 | RP5/PMD15/RB5 — PPS-mappable I/O / PMP data |
| 引脚 14 | RP4/PMD14/RB4 — PPS-mappable I/O / PMP data |
| 引脚 15 | RP3/PMD13/RB3 — PPS-mappable I/O / PMP data |
| 引脚 16 | RP2/PMD12/RB2 — PPS-mappable I/O / PMP data |
| 引脚 17 | RP1/PMD11/RB1 — PPS-mappable I/O / PMP data |
| 引脚 18 | RP0/PMD10/RB0 — PPS-mappable I/O / PMP data |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | OSC1/CLKI/RC12 — Crystal oscillator input or external clock |
| 引脚 21 | OSC2/CLKO/RC15 — Crystal oscillator output |
| 引脚 22 | AVSS — Analog ground reference |
| 引脚 23 | AVDD — Analog supply, 2.3 V to 3.6 V |
| 引脚 24 | RA0 — Analog / digital I/O |
| 引脚 25 | RA1 — Analog / digital I/O |
| 引脚 26 | RA2 — Analog / digital I/O |
| 引脚 27 | RA3 — Analog / digital I/O |
| 引脚 28 | RA4 — Analog / digital I/O |
| 引脚 29 | RA5 — Analog / digital I/O |
| 引脚 30 | VREF-/CVREF- — ADC negative reference / comparator reference |
| 引脚 31 | VREF+/CVREF+ — ADC positive reference / comparator reference |
| 引脚 32 | RA6 — Analog / digital I/O |
| 引脚 33 | RA7 — Analog / digital I/O |
| 引脚 34 | TDI — JTAG Test Data In |
| 引脚 35 | TCK — JTAG Test Clock |
| 引脚 36 | TDO — JTAG Test Data Out |
| 引脚 37 | TMS — JTAG Test Mode Select |
| 引脚 38 | VDD — Digital supply, 2.3 V to 3.6 V |
| 引脚 39 | VSS — Ground reference |
| 引脚 40 | RP16/RC0 — PPS-mappable I/O |
| 引脚 41 | RP17/RC1 — PPS-mappable I/O |
| 引脚 42 | RP18/RC2 — PPS-mappable I/O |
| 引脚 43 | RP19/RC3 — PPS-mappable I/O |
| 引脚 44 | EP — Exposed thermal pad (must be soldered to ground) |
典型应用
PIC32MX120F032DT-50I/ML 适用于 7 应用s: Consumer Appliance Control Board, Low-Cost Graphical User Interface (GLCD), USB-Device Embedded Node, Capacitive Touch Front Panel (mTouch), Industrial Sensor Hub, Audio Codec Front End (I2S), Portable Handheld Terminal.
Consumer Appliance Control Board
The PIC32MX120F032DT-50I/ML is well matched to consumer appliance control boards where deterministic 32-bit response, on-chip PPS, and a small 44-QFN footprint matter. With a 50 MHz MIPS M4K core delivering roughly 75 DMIPS and 32 KB of Flash plus 8 KB of SRAM, the part easily runs state-machine control plus a small graphical menu without an external RTOS. According to the family datasheet, PPS lets engineers reassign UART, SPI, and I2C pins to ease single-layer PCB routing in cramped enclosures. Designers typically pair this MCU with a 3.3 V LDO, a 25 MHz crystal, and a small SPI NOR Flash for asset logging.
推荐
Low-Cost Graphical User Interface (GLCD)
The integrated Parallel Master Port (PMP) makes this MCU a strong fit for low-cost graphical user interfaces driving small TFT or OLED panels. The 44-QFN footprint pairs with the PMP bus to read frame data from a small external SRAM, and 32 KB of Flash easily stores font tables plus a menu tree. According to the family datasheet, the PMP supports 8-bit and 16-bit parallel data plus dedicated control signals to offload display refresh from the CPU. Engineers often pair the chip with an SPI NOR for splash images and a small boost converter to drive the backlight from a single-cell Li-ion supply.
推荐
USB-Device Embedded Node
The PIC32MX120F032DT-50I/ML, together with PIC32MX130/150/170 USB-capable siblings in the same 44-QFN footprint, is a common choice for USB-Device embedded nodes like HID peripherals, CDC bridges, and USB audio class devices. The 50 MHz core drives a small USB stack comfortably, and PPS lets the USB D+/D- pins land on convenient PCB locations. According to the family datasheet, parts in this 44-pin family integrate the USB 2.0 full-speed transceiver and dedicated pull-up. Designers typically add a 12 MHz crystal with the on-chip PLL synthesizing 48 MHz for USB, plus ESD protection on the USB connector.
推荐
Capacitive Touch Front Panel (mTouch)
The on-chip Charge Time Measurement Unit (CTMU) gives the PIC32MX120F032DT-50I/ML native mTouch capacitive touch sensing, ideal for sealed front panels on appliances and industrial HMIs. The CTMU plus 10-bit ADC detects charge-time deltas on overlay electrodes to discriminate button press and slider position. According to the family datasheet, the peripheral works with the AVDD/AVSS rail and a small number of external Rs/Cs. PPS routing simplifies PCB layout by relocating the touch channels onto unused GPIO, eliminating matrix-style conflicts.
推荐
Industrial Sensor Hub
The PIC32MX120F032DT-50I/ML is a strong fit for industrial sensor hubs that aggregate UART, I2C, and SPI sensors onto a single RS-485 or CAN backhaul. With two I2S/SPI modules, two UARTs, and PPS, the MCU can fan in a half-dozen digital sensors and run calibration in software. According to the family datasheet, the industrial -40 to +85 C temperature range and 2.3-3.6 V supply are well matched to 24 V industrial rails via a small buck regulator. The 44-QFN exposed pad provides solid thermal dissipation when the part runs near 50 MHz at full I/O load.
推荐
Audio Codec Front End (I2S)
The two I2S/SPI modules on the PIC32MX120F032DT-50I/ML make it a credible audio codec front end for low-cost intercoms, voice prompts, and consumer audio accessories. The MIPS M4K core runs at 50 MHz, which is plenty of headroom for sampling 16-bit audio at 48 kHz while handling basic mixing or compression. According to the family datasheet, I2S supports master and slave modes with separate word and bit clocks. Designers typically pair the chip with an external 24-bit stereo codec and a small Class-D amplifier, both powered from the same 3.3 V rail.
推荐
Portable Handheld Terminal
The 44-QFN 8x8 mm footprint and 2.3-3.6 V supply make the PIC32MX120F032DT-50I/ML a natural fit for portable handheld terminals powered from a single-cell Li-ion battery. The MCU runs a small TFT plus a keypad scan plus UART/I2C peripherals from a 50 MHz MIPS M4K core with deterministic interrupt response. According to the family datasheet, the part ships in industrial -40 to +85 C, accommodating outdoor handheld use. The 32 KB Flash / 8 KB SRAM envelope is sufficient for menu state plus a simple scripting engine and OTA bootloader.
推荐
推荐产品汇总
工程参考数据： PIC32MX120F032DT-50I/ML ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC32MX120F032DT-I/ML | PIC32MX120F032BT-50I/ML | PIC32MX120F032D-I/ML | PIC32MX130F064B-I/ML | PIC32MX120F032DT-50V/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8) | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB (+100%) | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB (+100%) | 8 KB |
| 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 |
| Temperature Range | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +105 C (extended) |
| Packaging Media | Tape and Reel | Tape and Reel | Tape and Reel | Tray | Tray | Tape and Reel |
关键差异点
- Peripheral Pin Select (PPS) on most digital I/O （对比 PIC32MX110F016D-I/PT)
- MIPS M4K core with deterministic single-cycle execution （对比 PIC32MX120F032B-I/ML)
- Integrated CTMU for mTouch capacitive sensing （对比 PIC32MX130F064BT-50I/ML)
- Tape-and-reel packaging for high-volume SMT （对比 PIC32MX120F032D-I/ML)
设计说明
The PIC32MX120F032DT-50I/ML draws roughly 0.5 mA/MHz from the core, so at 50 MHz with peripherals active the supply can pull 25-30 mA plus I/O switching. Place a 10 uF bulk and a 100 nF decoupling cap within 5 mm of every VDD pin, and tie AVDD to VDD through a ferrite bead if analog performance is critical. According to the family datasheet, supply ramp-up must be monotonic between 2.3 V and 3.6 V to avoid POR misbehavior.
The 44-QFN 8x8 mm package relies on the exposed thermal pad for heat dissipation; that pad MUST be soldered to a top-side copper pour of at least 1 square inch connected to the ground plane. Without a thermal pad the junction can rise 30-50 C above ambient at 50 MHz full load, derating performance and lifetime. Estimated: theta_JA is approximately 25 C/W with a 1 sq in 2-oz copper pour; with no thermal pad theta_JA exceeds 60 C/W.
Place the 25 MHz crystal (or 12 MHz for USB) within 5 mm of OSC1/OSC2 with load capacitors sized per the crystal CL. Route JTAG (TCK/TMS/TDO/TDI) with 4-8 mil traces guarded by ground, and add a test-point cluster to ease debugging. PPS lets you relocate digital peripherals; pre-route alternate pin groups on the PCB to swap assignments without board respins.
PIC32MX I/O pins are NOT 5 V tolerant; tying a 5 V signal directly to any GPIO will damage the part. Add a level translator or 3.3 V LDO when interfacing to 5 V peripherals. Also, leaving the JTAG pins floating in production can cause unwanted debug interrupts; tie TMS and TCK to VDD through 100 k resistors per the family datasheet recommendations.
Keep the analog AVDD/AVSS pair quiet: route AVSS as a star back to the ground plane away from digital return currents, and place the VREF+ capacitor as close to the pin as practical. The CTMU touch channels are sensitive to ground noise; reserve a quiet copper pour under touch electrodes connected to AVSS, not the digital VSS plane.
合规信息
RoHS and REACH compliance confirmed on Microchip product pages. AEC-Q100 NOT qualified; the automotive-grade equivalent is the PIC32MX120F032DT-50I/ML with automotive qualification in higher-end family members. Halogen-free status is not explicitly stated in the verified web data.
