PIC32MX340F256H-80V/PT - 32-Bit 80MHz 256KB Flash MCU | Microchip
Артикул: PIC32MX340F256H-80V/PT ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $7.32 | $7,32 |
| 10 | $6.59 | $65,90 |
| 100 | $5.86 | $586,00 |
| 500 | $5.13 | $2.565,00 |
| 1.000 | $4.4 | $4.400,00 |
PIC32MX340F256H-80V/PT Обзор
A 32-bit microcontroller (MCU) is an integrated processor with a 32-bit data path, on-chip Flash program memory, RAM, and configurable peripherals such as ADC, timers, and communication interfaces. Within the embedded hierarchy, the PIC32MX sits between 8/16-bit MCUs and Cortex-M4 cores, delivering higher performance while retaining deterministic interrupt behavior. The PIC32MX3xx/4xx family is widely used in consumer, industrial, and USB-enabled applications where MIPS instruction-set familiarity and MPLAB X toolchain support matter.
Key features of the PIC32MX340F256H-80V/PT include 256KB (256K x 8) Flash program memory, 32KB (32K x 8) RAM, DMA controller for CPU-offload data movement, and integrated USB 2.0 full-speed device/host/OTG. The device provides 53 general-purpose I/O, multiple UART/SPI/I2C interfaces, a 10-bit 1 Msps ADC, and a parallel master port for external memory. Code protection, JTAG boundary scan, and trace support enable robust debugging.
Architecturally, the PIC32MX340F256H uses the MIPS32 M4K core with 5-stage pipeline, hardware multiply/divide, and a prefetch cache. The internal oscillator and PLL allow flexible clocking up to 80 MHz. Compared to PIC24/dsPIC parts, the PIC32MX340F256H delivers significantly higher Dhrystone MIPS (∼1.5 DMIPS/MHz) while sharing peripheral IP, easing migration from 16-bit designs.
Typical applications include USB peripherals (HID, CDC, mass storage), industrial control panels, graphical user interfaces with parallel-port LCDs, and consumer audio/automation hubs. The wide peripheral mix and DMA support also make it suitable for data-acquisition front ends and embedded web servers.
When designing with the -80V grade (operating -40C to +105C), reserve ample Flash/RAM headroom for USB stacks (typically 30-40 KB). Always provide a stable 3.3V rail with at least 100 mA headroom and place decoupling capacitors close to the VDD/VSS pins per the datasheet layout guide.
This page synthesizes distributor pricing, drop-in alternatives from the PIC32MX family, and practical design notes not found on the manufacturer datasheet alone.
Аналоги без доработки для PIC32MX340F256H-80V/PT — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC32MX340F256H-80V/PT (тот же форм-фактор и посадочное место) — отличается по ADC, Package, Operating Temperature, DMA Channels, USB.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC32MX340F256H-80I/PT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX340F256HT-80V/PT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC32MX340F128H-80I/PT
✅ Прямая замена✓ В наличии
$4.61 / шт.
Открыть даташит →PIC32MX340F128HT-80V/PT
✅ Прямая замена✓ В наличии
$5.6 / шт.
Открыть даташит →PIC32MX340F128H-80V/MR
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$3.72 / шт.
Открыть даташит →PIC32MX340F256H-80V/PT Максимальные параметры и электрические характеристики
| Core Architecture | MIPS32 M4K |
| Разрядность шины данных | 32-bit |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM Size | 32 KB (32K x 8) |
| Maximum CPU Frequency | 80 MHz |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Number of I/O Pins | 53 |
| ADC | 10-bit, 1 Msps |
| Корпус | 64-pin TQFP (10x10x1 mm) |
| Тип монтажа | Surface Mount |
| Рабочая температура | -40C to +105C (-80V grade) |
| DMA Channels | Yes |
| USB Interface | USB 2.0 Full-Speed Device/Host/OTG |
| Communication Interfaces | UART, SPI, I2C, PMP |
| Статус RoHS | Compliant |
Конфигурация выводов PIC32MX340F256H-80V/PT
| Контакт 1 | RP15/PMPDO/RD4 — I/O port D4 / Parallel Master Port data |
| Контакт 2 | RP14/PMPD1/RD5 — I/O port D5 / PMP data |
| Контакт 3 | RP13/PMD2/RD6 — I/O port D6 / PMP data |
| Контакт 4 | RP12/PMD3/RD7 — I/O port D7 / PMP data |
| Контакт 5 | RP11/PMD4/RD8 — I/O port D8 / PMP data |
| Контакт 6 | RP10/PMD5/RD9 — I/O port D9 / PMP data |
| Контакт 7 | RP9/PMD6/RD10 — I/O port D10 / PMP data |
| Контакт 8 | RP8/PMD7/RD11 — I/O port D11 / PMP data |
| Контакт 9 | VSS — Ground reference |
| Контакт 10 | VDD — Positive supply (2.3V-3.6V) |
| Контакт 11 | RP7/PMD8/RD0 — I/O port D0 / PMP data |
| Контакт 12 | RP6/PMD9/RD1 — I/O port D1 / PMP data |
| Контакт 13 | RP5/PMD10/RD2 — I/O port D2 / PMP data |
| Контакт 14 | RP4/PMD11/RD3 — I/O port D3 / PMP data |
| Контакт 15 | VCAP — Voltage regulator bypass capacitor (4.7uF to VSS) |
| Контакт 16 | PGEC2/RP3/RB3 — I/O port B3 / ICSP clock |
| Контакт 17 | PGED2/RP2/RB2 — I/O port B2 / ICSP data |
| Контакт 18 | PGEC1/RP1/RB1 — I/O port B1 / ICSP clock |
| Контакт 19 | PGED1/RP0/RB0 — I/O port B0 / ICSP data |
| Контакт 20 | VSS — Ground reference |
| Контакт 21 | VDD — Positive supply (2.3V-3.6V) |
| Контакт 22 | AN12/RP28/RB12 — Analog input 12 / I/O port B12 |
| Контакт 23 | AN11/RP27/RB11 — Analog input 11 / I/O port B11 |
| Контакт 24 | AN10/RP26/RB10 — Analog input 10 / I/O port B10 |
| Контакт 25 | AN9/RP25/RB9 — Analog input 9 / I/O port B9 |
| Контакт 26 | AN8/RP24/RB8 — Analog input 8 / I/O port B8 |
| Контакт 27 | AN7/RP23/RB7 — Analog input 7 / I/O port B7 |
| Контакт 28 | AN6/RP22/RB6 — Analog input 6 / I/O port B6 |
| Контакт 29 | AN5/RP21/RB5 — Analog input 5 / I/O port B5 |
| Контакт 30 | AN4/RP20/RB4 — Analog input 4 / I/O port B4 |
| Контакт 31 | AVSS — Analog ground |
| Контакт 32 | AVDD — Analog supply (2.3V-3.6V) |
| Контакт 33 | AN3/RP19/RB3 — Analog input 3 / I/O port B3 (alt) |
| Контакт 34 | AN2/RP18/RB2 — Analog input 2 / I/O port B2 (alt) |
| Контакт 35 | AN1/RP17/RB1 — Analog input 1 / I/O port B1 (alt) |
| Контакт 36 | AN0/RP16/RB0 — Analog input 0 / I/O port B0 (alt) |
| Контакт 37 | VREF-/CVREF-/AN15 — ADC negative reference / analog input 15 |
| Контакт 38 | VREF+/CVREF+/AN14 — ADC positive reference / analog input 14 |
| Контакт 39 | SDA1/RP9/RD9 — I2C data 1 / I/O port D9 |
| Контакт 40 | SCL1/RP8/RD8 — I2C clock 1 / I/O port D8 |
| Контакт 41 | SOSCI/RP13/RB13 — Secondary oscillator input / I/O port B13 |
| Контакт 42 | SOSCO/RP14/RB14 — Secondary oscillator output / I/O port B14 |
| Контакт 43 | D-/RG3 — USB D- data line |
| Контакт 44 | D+/RG2 — USB D+ data line |
| Контакт 45 | VUSB — USB transceiver supply (3.3V) |
| Контакт 46 | OSC1/RC12 — Primary oscillator input |
| Контакт 47 | OSC2/RC15 — Primary oscillator output |
| Контакт 48 | VSS — Ground reference |
| Контакт 49 | TDI/RPA8/RA8 — JTAG test data in / I/O port A8 |
| Контакт 50 | TCK/RPA9/RA9 — JTAG test clock / I/O port A9 |
| Контакт 51 | TDO/RPA10/RA10 — JTAG test data out / I/O port A10 |
| Контакт 52 | TMS/RPA7/RA7 — JTAG test mode select / I/O port A7 |
| Контакт 53 | TRST/RPA6/RA6 — JTAG test reset / I/O port A6 |
| Контакт 54 | U1RTS/RF13/RF13 — UART1 RTS / I/O port F13 |
| Контакт 55 | U1RX/RF12/RF12 — UART1 RX / I/O port F12 |
| Контакт 56 | U1TX/RF8/RF8 — UART1 TX / I/O port F8 |
| Контакт 57 | U1CTS/RF5/RF5 — UART1 CTS / I/O port F5 |
| Контакт 58 | PMCS1/RG1/RG1 — PMP chip select 1 / I/O port G1 |
| Контакт 59 | PMCS2/RG0/RG0 — PMP chip select 2 / I/O port G0 |
| Контакт 60 | PMWR/RG7/RG7 — PMP write strobe / I/O port G7 |
| Контакт 61 | PMRD/RG6/RG6 — PMP read strobe / I/O port G6 |
| Контакт 62 | PMA0/RE8/RE8 — PMP address 0 / I/O port E8 |
| Контакт 63 | PMALL/RG15/RG15 — PMP address latch low / I/O port G15 |
| Контакт 64 | PMALH/RG14/RG14 — PMP address latch high / I/O port G14 |
Типичное применение
PIC32MX340F256H-80V/PT подходит для 6 применениеs: USB Human Interface Device (HID) Peripherals, Industrial Control Panel with Graphical LCD, USB-to-UART / USB-to-SPI Bridge Adapter, Data Acquisition Front End, Consumer Audio / Automation Hub, Embedded Web Server / IoT Gateway.
USB Human Interface Device (HID) Peripherals
The PIC32MX340F256H-80V/PT's integrated USB 2.0 full-speed controller and 256 KB Flash make it a strong fit for USB HID products such as keyboards, mice, gamepads, and custom input devices. The MCU's 80 MHz M4K core handles HID report parsing, debounce, and lighting effects at low CPU load, while 32 KB RAM comfortably buffers multi-endpoint traffic. Place a 1.5 kohm pull-up on D+ for full-speed enumeration; the on-chip transceiver eliminates external USB PHY cost. Firmware footprint for a typical composite HID is 30-45 KB Flash, leaving ample headroom in 256 KB.
Рекомендуется
Industrial Control Panel with Graphical LCD
With 53 I/Os and a parallel master port (PMP), the PIC32MX340F256H-80V/PT directly drives graphical LCDs up to QVGA resolution without external controllers. The 80 MHz core renders menus, fonts, and bitmaps at smooth frame rates while DMA offloads PMP pixel transfers. The 2.3-3.6 V supply range tolerates noisy 24V industrial rails stepped down through a linear or buck regulator. The -105C temperature grade supports outdoor panels and factory floors. Use the internal RTCC for time-stamped event logging.
Рекомендуется
USB-to-UART / USB-to-SPI Bridge Adapter
The PIC32MX340F256H-80V/PT's USB device stack plus its multiple UART, SPI, and I2C peripherals make it ideal for compact USB bridge adapters used in factory programming and debug fixtures. The MCU emulates common bridge protocols (CDC ACM, vendor-class bulk) while exposing up to 4 UART/SPI ports to the host side. Bus-powered designs are simple because the part draws under 50 mA at 80 MHz. Flash headroom supports dual-role firmware, allowing field upgrade via USB DFU without external programmer.
Рекомендуется
Data Acquisition Front End
The 10-bit 1 Msps ADC, DMA controller, and 256 KB Flash position the PIC32MX340F256H-80V/PT as a competent multi-channel data logger. The 32 KB RAM buffers 16 ksamples at full ADC throughput, while DMA streams conversions to RAM without CPU intervention, leaving the M4K core free for averaging, peak detection, and SD card writes. Reference designs use the parallel master port with external SRAM for longer captures. The wide -40C to +105C range supports chassis-mounted instrumentation.
Рекомендуется
Consumer Audio / Automation Hub
The PIC32MX340F256H-80V/PT runs custom audio decoding (MP3, AAC, ADPCM) and home automation stacks simultaneously, leveraging its 80 MHz CPU for software codecs and ample Flash for protocol firmware (Zigbee, BLE-via-host, Modbus). The I2S peripheral can drive external DACs for compact speaker designs. Five UART channels handle concurrent RS-485, RS-232, and DMX links. Cost-optimized designs skip external RAM by using the 32 KB on-chip SRAM for ping-pong audio buffers.
Рекомендуется
Embedded Web Server / IoT Gateway
The PIC32MX340F256H-80V/PT's TCP/IP stack support (via Microchip's MPLAB Harmony Net Service) and 80 MHz CPU enable lightweight HTTP/MQTT servers on the MCU itself. The 256 KB Flash accommodates the TCP/IP stack plus a small web UI; 32 KB RAM supports several concurrent sockets. The USB host port allows Wi-Fi dongles for wireless connectivity. Engineers often pair this MCU with an external Ethernet PHY for wired IoT bridges.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC32MX340F256H-80V/PT — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC32MX340F256H-80I/PT | PIC32MX340F256HT-80V/PT | PIC32MX340F128H-80I/PT | PIC32MX340F128HT-80V/PT |
|---|---|---|---|---|---|
| Package | 64-pin TQFP (10x10x1 mm) | 64-pin TQFP - same | 64-pin TQFP - same | 64-pin TQFP - same | 64-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 256 KB | 256 KB (same) | 256 KB (same) | 128 KB (-50%) | 128 KB (-50%) |
| RAM Size | 32 KB | 32 KB (same) | 32 KB (same) | 32 KB (same) | 32 KB (same) |
| Max CPU Frequency | 80 MHz | 80 MHz (same) | 80 MHz (same) | 80 MHz (same) | 80 MHz (same) |
| Operating Temperature | -40C to +105C | -40C to +85C (-20C upper limit) | -40C to +105C (same) | -40C to +85C | -40C to +105C |
| USB 2.0 FS | Yes (device/host/OTG) | Yes (same) | Yes (same) | Yes (same) | Yes (same) |
| Unit Price (1000-pc reel) | $4.40 | $4.20 (approx) | $4.40 (same) | $3.80 (approx) | $3.80 (approx) |
Ключевые отличия
- Extended temperature range (-40C to +105C) over the -I grade counterpart (против PIC32MX340F256H-80I/PT)
- Reel packaging variant available with same die (против PIC32MX340F256HT-80V/PT)
- Full 256 KB Flash at same package, lower price tier (против PIC32MX340F128H-80V/PT)
Заметки по проектированию
Estimated: at 80 MHz with full USB activity, the PIC32MX340F256H draws approximately 50-70 mA from a 3.3 V rail. Provide a 3.3V LDO with at least 100 mA headroom and a 10 uF bulk capacitor near the VDD pins. The VCAP pin (pin 15) requires a 4.7 uF low-ESR ceramic bypass capacitor to VSS to stabilize the internal 1.8V core regulator; do not omit this part or the MCU will brown-out under high CPU load.
Keep USB D+/D- traces matched within 2 mm length difference and 90 ohm differential impedance per USB 2.0 FS spec. Place the 15 kohm pull-down resistors on D+/D- close to the MCU pins. Decouple each VDD pin with a 0.1 uF X7R ceramic placed within 3 mm, plus one 10 uF bulk per supply domain. Route crystal traces (OSC1/OSC2) short and ground-guarded to avoid EMI.
Do not skip configuring the peripheral pin select (PPS) registers in firmware - many pins default to general-purpose I/O and require explicit PPS mapping to peripheral functions. Reserve roughly 30-40 KB Flash for the USB stack when using the Microchip USB framework. The VUSB pin (45) requires a 0.47 uF decoupling capacitor; without it, USB enumeration may fail intermittently.
Информация о соответствии
RoHS compliant per Microchip product page and DigiKey listing. Not AEC-Q100 qualified - this part targets industrial rather than automotive-grade applications. Lead-free matte-tin finish per JEDEC J-STD-020.
