PIC32MX270F256D-V/TL - 32-bit MCU 256KB Flash USB 44-VTLA | Microchip
MPN: PIC32MX270F256D-V/TL ✓ Hoạt độngPIC32MX270F256D-V/TL Tóm tắt
A 32-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog interfaces. Within the broader taxonomy it belongs to embedded microcontrollers -> microprocessors -> digital ICs -> semiconductors. The PIC32MX2XX family targets applications needing high-performance control with connectivity, multimedia, and USB in a low pin-count footprint.
Key differentiating features include 256 KB self-programmable Flash with live update support, 64 KB SRAM, a 10-bit 1 Msps ADC with up to 28 channels, five 16-bit timers, two I2C, two UART, and two SPI/I2S interfaces. The integrated Charge Time Measurement Unit (CTMU) enables mTouch capacitive touch buttons and sliders and provides high-resolution time measurement down to 1 ns. The on-chip USB 2.0 full-speed controller with on-the-go support eliminates an external PHY, reducing BOM cost.
Architecturally, the M4K core pairs a five-stage pipeline with single-cycle multiply and hardware divide, and the bus matrix supports concurrent DMA-driven peripheral activity. The PPS remapping engine routes digital peripheral I/O to a wide range of pins, simplifying PCB routing and helping shrink the schematic-to-layout cycle. The PMP block streams parallel data to external graphics controllers or SRAM, enabling low-cost TFT-LCD user interfaces.
Typical applications span Bluetooth audio docks, USB HID peripherals, low-cost graphics touch panels, capacitive-touch human-machine interfaces, and consumer appliances requiring USB device/host connectivity. The wide temperature grade option (V variant: -40C to +105C) makes it suitable for industrial control modules.
When designing with this part, ensure the VTLA exposed pad is properly soldered to a sufficient ground copper pour to meet the 31 C/W theta_JA thermal resistance. The PPS function must be remapped early in firmware initialization to avoid contention; refer to the family datasheet for pin mapping tables. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX270F256D-V/TL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX270F256D-V/TL (cùng hình factor và footprint) — khác nhau ở Package, Parallel Master Port (PMP), ADC, Program Memory (Flash), Timers.
PIC32MX270F256DT-V/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F256D-I/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F256DT-I/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F256D-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX270F256D-50I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX270F256DT-V/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F256D-V/TL Tỷ lệ tối đa & tính chất điện
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 50 MHz / 83 DMIPS |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage | 2.5 V to 3.6 V |
| Active Current Consumption | 0.5 mA/MHz (typical) |
| ADC | 10-bit, up to 1 Msps |
| USB Controller | USB 2.0 Full-Speed Device/Host/OTG |
| I2S/SPI Modules | 2 |
| UART Modules | 2 |
| I2C Modules | 2 |
| Parallel Master Port (PMP) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| CTMU / mTouch | Yes (1 ns time measurement resolution) |
| Timers | 5 x 16-bit |
| DMA Channels | 4 |
| Khoảng nhiệt độ hoạt động | -40C to +105C (V grade) |
| Hộp | 44-VTLA (6x6 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 |
Cấu hình chân PIC32MX270F256D-V/TL
| Chân 1 | RPB0/RB0 — I/O port B0 / remappable peripheral |
| Chân 2 | RPB1/RB1 — I/O port B1 / remappable peripheral |
| Chân 3 | RPB2/RB2 — I/O port B2 / remappable peripheral |
| Chân 4 | RPB3/RB3 — I/O port B3 / remappable peripheral |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RPB4/RB4 — I/O port B4 / remappable peripheral |
| Chân 7 | RPB5/RB5 — I/O port B5 / remappable peripheral |
| Chân 8 | RPB6/RB6 — I/O port B6 / remappable peripheral |
| Chân 9 | RPB7/RB7 — I/O port B7 / remappable peripheral |
| Chân 10 | VUSB — USB internal transceiver supply |
| Chân 11 | VBUS — USB VBUS sensing input |
| Chân 12 | D+ — USB D+ data line |
| Chân 13 | D- — USB D- data line |
| Chân 14 | VSS — Ground reference |
| Chân 15 | RPC0/RC0 — I/O port C0 / remappable peripheral |
| Chân 16 | RPC1/RC1 — I/O port C1 / remappable peripheral |
| Chân 17 | RPC2/RC2 — I/O port C2 / remappable peripheral |
| Chân 18 | RPC3/RC3 — I/O port C3 / remappable peripheral |
| Chân 19 | RPC4/RC4 — I/O port C4 / remappable peripheral |
| Chân 20 | RPC5/RC5 — I/O port C5 / remappable peripheral |
| Chân 21 | RPC6/RC6 — I/O port C6 / remappable peripheral |
| Chân 22 | RPC7/RC7 — I/O port C7 / remappable peripheral |
| Chân 23 | VSS — Ground reference |
| Chân 24 | VDD — Positive supply voltage (2.5-3.6V) |
| Chân 25 | RPA0/RA0 — I/O port A0 / remappable peripheral |
| Chân 26 | RPA1/RA1 — I/O port A1 / remappable peripheral |
| Chân 27 | RPA2/RA2 — I/O port A2 / remappable peripheral |
| Chân 28 | RPA3/RA3 — I/O port A3 / remappable peripheral |
| Chân 29 | RPA4/RA4 — I/O port A4 / remappable peripheral |
| Chân 30 | RPA5/RA5 — I/O port A5 / remappable peripheral |
| Chân 31 | RPA6/RA6 — I/O port A6 / remappable peripheral |
| Chân 32 | RPA7/RA7 — I/O port A7 / remappable peripheral |
| Chân 33 | VSS — Ground reference |
| Chân 34 | VDD — Positive supply voltage (2.5-3.6V) |
| Chân 35 | OSC1/CLKI — Crystal oscillator input / external clock |
| Chân 36 | OSC2/CLKO — Crystal oscillator output |
| Chân 37 | RPD0/RD0 — I/O port D0 / remappable peripheral |
| Chân 38 | RPD1/RD1 — I/O port D1 / remappable peripheral |
| Chân 39 | RPD2/RD2 — I/O port D2 / remappable peripheral |
| Chân 40 | RPD3/RD3 — I/O port D3 / remappable peripheral |
| Chân 41 | RPD4/RD4 — I/O port D4 / remappable peripheral |
| Chân 42 | RPD5/RD5 — I/O port D5 / remappable peripheral |
| Chân 43 | PGEC2 — In-circuit emulator clock (ICSP) |
| Chân 44 | PGED2 — In-circuit emulator data (ICSP) |
Ứng dụng tiêu biểu
PIC32MX270F256D-V/TL phù hợp cho 6 Áp dụngs: Bluetooth Audio Docks, USB HID Peripherals, Capacitive Touch HMI Panels, Low-Cost Graphics TFT Displays, Industrial Control Modules, Consumer Appliances.
Bluetooth Audio Docks
The PIC32MX270F256D-V/TL is the MCU used on the Microchip MA320014 Bluetooth Audio Plug-In Module (PIM), demonstrating its fit for Bluetooth speaker docks and audio streaming products. The part delivers two I2S interfaces for codec handshaking, 50 MHz MIPS32 core for USB audio class stack processing, and 64 KB SRAM to buffer audio frames without dropouts. Integrated USB 2.0 full-speed device/host/OTG enables direct streaming from a USB host or phone without external PHY. The wide 2.5-3.6 V supply range allows direct USB bus powering. Compared to discrete USB-to-I2S bridges, this single-chip approach shrinks BOM and simplifies firmware maintenance.
Được đề xuất
USB HID Peripherals
The PIC32MX270F256D-V/TL is well suited to USB Human Interface Device designs such as keyboards, mice, game controllers, and custom input panels. The on-chip USB 2.0 full-speed controller with device/host/OTG mode eliminates external PHY cost, and the 50 MHz core plus 64 KB SRAM comfortably runs HID class drivers and custom report protocols. The 256 KB Flash hosts USB stacks plus application code, while PPS remaps peripheral functions to free pins for matrix scanning or LED driving. At 0.5 mA/MHz active current, USB suspend current can stay under the 2.5 mA USB spec for bus-powered HID designs.
Được đề xuất
Capacitive Touch HMI Panels
The PIC32MX270F256D-V/TL integrates Microchip's CTMU (Charge Time Measurement Unit) which, combined with the mTouch library, enables capacitive touch buttons, sliders, and proximity sensors with 1 ns time measurement resolution. The 256 KB Flash and 64 KB SRAM host touch algorithms plus UI graphics; the PMP block streams pixel data to a TFT controller while two I2S/SPI channels drive audio feedback. The -40C to +105C V temperature grade supports kitchen appliances and industrial HMIs. Compared to dedicated touch ICs, the integrated CTMU saves cost and PCB area while keeping the MCU pipeline free for HMI logic.
Được đề xuất
Low-Cost Graphics TFT Displays
The PIC32MX270F256D-V/TL drives low-cost TFT-LCD panels through its Parallel Master Port (PMP), which streams 8/16-bit parallel data to external display controllers. At 50 MHz and 83 DMIPS, the M4K core can refresh small QVGA/WQVGA panels while running UI logic. The 64 KB SRAM hosts frame buffers for small color depths, and 256 KB Flash stores fonts, icons, and UI state machines. Two I2S/SPI channels can drive audio prompts for industrial or appliance interfaces. PPS function reduces routing congestion when bridging MCU pins to TFT control signals and SD card interfaces.
Được đề xuất
Industrial Control Modules
The PIC32MX270F256D-V/TL fits industrial control modules with its V temperature grade (-40C to +105C) and 10-bit 1 Msps ADC for sensor acquisition. The 256 KB Flash stores Modbus or CANopen protocol stacks plus control logic, while two UART, two I2C, and two SPI interfaces bridge to sensors, motor pre-drivers, and HMI panels. The 50 MHz M4K core executes PID loops and signal conditioning in real time. Industrial certifications and long-term Microchip supply support 10-15 year product lifecycles typical of factory automation equipment.
Được đề xuất
Consumer Appliances
The PIC32MX270F256D-V/TL targets mid-range consumer appliances such as coffee machines, smart ovens, and washing machine control boards. With USB 2.0 full-speed OTG, the MCU supports firmware update from USB sticks and diagnostic logging to PCs. CTMU enables sleek glass touch panels, while the PMP drives segmented LCDs or small TFT displays. The 2.5-3.6 V supply matches common 3.3 V regulated rails; integrated USB suspend mode keeps standby power low. Compared to 8-bit PIC16/PIC18 predecessors, the 32-bit M4K core adds headroom for IoT connectivity stacks and modern UI features.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX270F256D-V/TL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX270F256DT-V/TL | PIC32MX270F256D-I/TL | PIC32MX270F256DT-I/TL | PIC32MX270F256D-50I/ML | PIC32MX270F256DT-V/ML |
|---|---|---|---|---|---|---|
| Package | 44-VTLA (6x6 mm) | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Maximum Clock | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS | 50 MHz / 83 DMIPS |
| Operating Temperature | -40C to +105C (V) | -40C to +105C (V) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +105C (V) |
| USB Controller | 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/Host/OTG | USB 2.0 FS Device/Host/OTG |
| CTMU / mTouch | Yes | Yes | Yes | Yes | Yes | Yes |
| Packaging Form | Tray (TL) | Tape & Reel (T) | Tray (TL) | Tape & Reel (T) | Tray (ML) | Tape & Reel (T) |
| Approx Unit Price (qty 1) | $4.96 | ~$4.96 (same silicon, T&R form) | ~$4.50 (I-temp lower) | ~$4.50 | ~$4.50 | ~$4.96 |
Bảo phân biệt quan trọng
- V temperature grade (-40C to +105C) variant (vsPIC32MX270F256D-I/TL)
- Tape & Reel packaging for SMT assembly (vsPIC32MX270F256D-V/TL (Tray))
- Integrated CTMU + mTouch for capacitive sensing (vsPIC32MX250F128B-I/SP (lower-memory PIC32))
Ghi chú thiết kế
Estimated: at maximum core activity (50 MHz, full peripheral operation), the PIC32MX270F256D-V/TL draws approximately 25 mA, dissipating ~80 mW at 3.3 V - well within the 44-VTLA package's thermal envelope. The exposed thermal pad MUST be soldered to a continuous ground copper pour of at least 25 mm^2 on both top and inner layers for reliable heat spreading. Without this, junction temperature may approach the +105C V-grade limit in enclosed industrial enclosures. According to Microchip's family datasheet, the VTLA-44 package is rated for the temperature ranges stated only with the EP properly soldered to a thermal via array (typically 4-9 vias of 0.3 mm drill).
The USB D+ and D- traces must be routed as a 90-ohm differential pair with length matching within 2 mm per the USB 2.0 full-speed specification. Place a 90-ohm common-mode choke and ESD protection array within 5 mm of the USB connector to meet IEC 61000-4-2 ESD ratings. The VUSB pin requires a 0.1 uF decoupling capacitor placed within 1 mm of the pin, and VBUS sensing needs a divider network with 10 kohm resistors for OTG detection. Crystal traces between OSC1/OSC2 and the external crystal should be kept under 5 mm and guarded with a ground ring to minimize EMI.
Estimated: the Peripheral Pin Select (PPS) function must be unlocked via CFGCON register sequence before any remap assignment takes effect - a common gotcha when porting code from PIC24/dsPIC families. The CTMU touch acquisition requires calibrating the time base to system clock; without this calibration, touch readings drift with temperature and VDD. Always read the family errata document for the specific silicon revision (check device marking). The 256 KB Flash supports dual-boot mode only when the FBS bits are configured at programming time - this cannot be enabled in firmware after deployment.
When using the Parallel Master Port (PMP) to drive TFT displays, the 8/16-bit data bus should be length-matched within 5 mm and routed over a continuous ground plane to avoid timing skew at the 50 MHz system clock. Place a 33 ohm series damping resistor near the MCU pin on each data line if the panel is more than 50 mm away to suppress reflections. For SPI-driven peripherals, keep clock trace lengths under 30 mm and avoid routing adjacent to switching power nodes. The I2S MCLK output should be buffered if driving multiple codecs to prevent clock jitter from capacitive loading.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page; not AEC-Q100 qualified - this is a general-purpose MCU, not an automotive-grade part. USB 2.0 full-speed compliance per USB Implementers Forum certification.
