ATXMEGA128A1-CUR - 128KB Flash 32MHz AVR XMEGA MCU | Microchip
MPN: ATXMEGA128A1-CUR ✗ Cuối đờiATXMEGA128A1-CUR Tóm tắt
An AVR XMEGA microcontroller is a member of the 8/16-bit RISC microcontroller family based on the enhanced AVR architecture. Within the broader taxonomy, XMEGA devices sit between classic 8-bit AVR MCUs and 32-bit ARM Cortex-M parts - they execute most instructions in a single clock cycle, achieving 1 MIPS per MHz, while exposing richer peripherals (DMA, event system, AES/DES crypto on some variants) than legacy ATmega devices. The XMEGA A1 family is the top-of-line 100-pin tier, with the highest pin count, largest memory options, and the most peripheral channels in the XMEGA lineup.
Key features of the ATXMEGA128A1-CUR include four USARTs, four TWI (I²C-compatible) interfaces, two SPI ports, a 12-channel 16-bit event system, an 8-channel 16-bit timer/counter array with PWM and compare modes, a 12-bit 2 Msps ADC, two 12-bit DACs, an analog comparator with hysteresis, and 78 general-purpose I/O lines. The 100-ball TFBGA package provides a 0.8 mm ball pitch and 1.2 mm height, optimized for compact handheld and IoT designs. Compared to ATmega128, the XMEGA core delivers roughly 2-4x the MIPS at the same clock while adding DMA and event-driven peripherals.
Typical applications include industrial sensor hubs, building automation controllers, USB human-interface devices, smart energy metering nodes, low-power wireless sensor platforms, and motor-control signal processors. Designers select this part when they need AVR toolchain compatibility (AVR Studio, Microchip Studio, GCC-AVR) combined with XMEGA's DMA and event system for deterministic, low-CPU-overhead peripheral handling.
When designing with this device, place the 100-ball TFBGA land pattern on a minimum 4-layer PCB with continuous ground planes beneath the package to ensure stable JTAG/PDI programming and to manage thermal dissipation at high MIPS loads. Always include decoupling: a 100 nF ceramic capacitor per VCC pin pair plus a bulk 4.7 µF tantalum or ceramic near the supply rail. Microchip recommends Atmel-ICE or AVR Dragon for PDI programming.
This page synthesizes distributor pricing, drop-in AVR XMEGA alternatives, package-level pinout, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATXMEGA128A1-CUR — 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 ATXMEGA128A1-CUR (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Timer/Counters, Event System Channels, Mounting Type.
ATXMEGA128A1-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATXMEGA64A1-CUR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATXMEGA192A1-CUR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATXMEGA256A1-CUR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATXMEGA384A1-CUR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATXMEGA64A1U-CUR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATXMEGA128A1-CUR Tỷ lệ tối đa & tính chất điện
| Core Architecture | AVR XMEGA (8/16-bit RISC) |
| Maximum CPU Frequency | 32 MHz |
| MIPS Throughput | 32 MIPS |
| Flash Program Memory | 128 KB |
| Boot Code Section | 8 KB |
| SRAM | 8 KB |
| EEPROM | 2 KB |
| Supply Voltage Range | 1.6 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 100-ball TFBGA (CBGA), 9x9 mm, 0.8 mm pitch |
| GPIO Pins | 78 |
| ADC Channels | 12-bit, 2 Msps |
| DAC Channels | 2x 12-bit |
| USART Interfaces | 4 |
| TWI (I²C) Interfaces | 4 |
| SPI Interfaces | 2 |
| Timer/Counters | 8 x 16-bit |
| DMA Channels | 4 |
| Event System Channels | 8 x 16-bit |
| External Bus Interface | Yes |
| Kiểu lắp đặt | Surface Mount (BGA) |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATXMEGA128A1-CUR
| Chân 1 | AVSS — Analog ground |
| Chân 2 | AVCC — Analog supply voltage |
| Chân 3 | AREF — ADC reference voltage |
| Chân 4 | PA0 — Port A bit 0 (GPIO/ADC0) |
| Chân 5 | PA1 — Port A bit 1 (GPIO/ADC1) |
| Chân 6 | PA2 — Port A bit 2 (GPIO/ADC2) |
| Chân 7 | PA3 — Port A bit 3 (GPIO/ADC3) |
| Chân 8 | PA4 — Port A bit 4 (GPIO/ADC4) |
| Chân 9 | PA5 — Port A bit 5 (GPIO/ADC5) |
| Chân 10 | PA6 — Port A bit 6 (GPIO/ADC6) |
| Chân 11 | PA7 — Port A bit 7 (GPIO/ADC7) |
| Chân 12 | VCC — Digital supply voltage |
| Chân 13 | GND — Digital ground |
| Chân 14 | PB0 — Port B bit 0 (GPIO) |
| Chân 15 | PB1 — Port B bit 1 (GPIO) |
| Chân 16 | PB2 — Port B bit 2 (GPIO) |
| Chân 17 | PB3 — Port B bit 3 (GPIO) |
| Chân 18 | PB4 — Port B bit 4 (GPIO) |
| Chân 19 | PB5 — Port B bit 5 (GPIO) |
| Chân 20 | PB6 — Port B bit 6 (GPIO) |
| Chân 21 | PB7 — Port B bit 7 (GPIO) |
| Chân 22 | PC0 — Port C bit 0 (GPIO) |
| Chân 23 | PC1 — Port C bit 1 (GPIO) |
| Chân 24 | PC2 — Port C bit 2 (GPIO) |
| Chân 25 | PC3 — Port C bit 3 (GPIO) |
| Chân 26 | PC4 — Port C bit 4 (GPIO) |
| Chân 27 | PC5 — Port C bit 5 (GPIO) |
| Chân 28 | PC6 — Port C bit 6 (GPIO) |
| Chân 29 | PC7 — Port C bit 7 (GPIO) |
| Chân 30 | VCC — Digital supply voltage |
| Chân 31 | GND — Digital ground |
| Chân 32 | PD0 — Port D bit 0 (GPIO) |
| Chân 33 | PD1 — Port D bit 1 (GPIO) |
| Chân 34 | PD2 — Port D bit 2 (GPIO) |
| Chân 35 | PD3 — Port D bit 3 (GPIO) |
| Chân 36 | PD4 — Port D bit 4 (GPIO) |
| Chân 37 | PD5 — Port D bit 5 (GPIO) |
| Chân 38 | PD6 — Port D bit 6 (GPIO) |
| Chân 39 | PD7 — Port D bit 7 (GPIO) |
| Chân 40 | PE0 — Port E bit 0 (GPIO) |
| Chân 41 | PE1 — Port E bit 1 (GPIO) |
| Chân 42 | PE2 — Port E bit 2 (GPIO) |
| Chân 43 | PE3 — Port E bit 3 (GPIO) |
| Chân 44 | VCC — Digital supply voltage |
| Chân 45 | GND — Digital ground |
| Chân 46 | PE4 — Port E bit 4 (GPIO) |
| Chân 47 | PE5 — Port E bit 5 (GPIO) |
| Chân 48 | PE6 — Port E bit 6 (GPIO) |
| Chân 49 | PE7 — Port E bit 7 (GPIO) |
| Chân 50 | PF0 — Port F bit 0 (GPIO) |
| Chân 51 | PF1 — Port F bit 1 (GPIO) |
| Chân 52 | PF2 — Port F bit 2 (GPIO) |
| Chân 53 | PF3 — Port F bit 3 (GPIO) |
| Chân 54 | PF4 — Port F bit 4 (GPIO) |
| Chân 55 | PF5 — Port F bit 5 (GPIO) |
| Chân 56 | PF6 — Port F bit 6 (GPIO) |
| Chân 57 | PF7 — Port F bit 7 (GPIO) |
| Chân 58 | VCC — Digital supply voltage |
| Chân 59 | GND — Digital ground |
| Chân 60 | PK0 — Port K bit 0 (GPIO) |
| Chân 61 | PK1 — Port K bit 1 (GPIO) |
| Chân 62 | PK2 — Port K bit 2 (GPIO) |
| Chân 63 | PK3 — Port K bit 3 (GPIO) |
| Chân 64 | PK4 — Port K bit 4 (GPIO) |
| Chân 65 | PK5 — Port K bit 5 (GPIO) |
| Chân 66 | PK6 — Port K bit 6 (GPIO) |
| Chân 67 | PK7 — Port K bit 7 (GPIO) |
| Chân 68 | PQ0 — Port Q bit 0 (GPIO) |
| Chân 69 | PQ1 — Port Q bit 1 (GPIO) |
| Chân 70 | PQ2 — Port Q bit 2 (GPIO) |
| Chân 71 | PQ3 — Port Q bit 3 (GPIO) |
| Chân 72 | VCC — Digital supply voltage |
| Chân 73 | GND — Digital ground |
| Chân 74 | XTAL1 — External crystal / clock input |
| Chân 75 | XTAL2 — External crystal output |
| Chân 76 | RESET — Reset input (active low) |
| Chân 77 | PDI_CLK — Program & Debug Interface clock |
| Chân 78 | PDI_DATA — Program & Debug Interface data |
| Chân 79 | TOSC1 — RTC crystal oscillator 1 |
| Chân 80 | TOSC2 — RTC crystal oscillator 2 |
| Chân 81 | AVCC — Analog supply voltage |
| Chân 82 | AVSS — Analog ground |
| Chân 83 | PR0 — Port R bit 0 (GPIO) |
| Chân 84 | PR1 — Port R bit 1 (GPIO) |
| Chân 85 | VCC — Digital supply voltage |
| Chân 86 | GND — Digital ground |
| Chân 87 | A0 — External bus address bit 0 |
| Chân 88 | A1 — External bus address bit 1 |
| Chân 89 | A2 — External bus address bit 2 |
| Chân 90 | A3 — External bus address bit 3 |
| Chân 91 | D0 — External bus data bit 0 |
| Chân 92 | D1 — External bus data bit 1 |
| Chân 93 | D2 — External bus data bit 2 |
| Chân 94 | D3 — External bus data bit 3 |
| Chân 95 | D4 — External bus data bit 4 |
| Chân 96 | D5 — External bus data bit 5 |
| Chân 97 | D6 — External bus data bit 6 |
| Chân 98 | D7 — External bus data bit 7 |
| Chân 99 | WR — External bus write strobe (active low) |
| Chân 100 | RD — External bus read strobe (active low) |
Ứng dụng tiêu biểu
ATXMEGA128A1-CUR phù hợp cho 8 Áp dụngs: Industrial Sensor Hub & Multi-Channel Data Acquisition, Building Automation & HVAC Controller, USB Human Interface Device (HID) & Peripherals, Smart Energy Metering & Power Monitoring, Low-Power Wireless Sensor Platform, Motor Control Signal Processor & BLDC Commutation, Portable Medical & Wellness Devices, IoT Edge Node & Data Logger.
Industrial Sensor Hub & Multi-Channel Data Acquisition
The ATXMEGA128A1-CUR's combination of 78 GPIO pins, 12-bit 2 Msps ADC, four-channel DMA controller, and eight-channel event system makes it ideal for industrial sensor hubs aggregating multiple analog and digital transducers. The four-channel DMA can offload ADC sample transfers without CPU intervention, freeing the 32 MIPS core for filtering and protocol handling, while the 128 KB Flash accommodates complex Modbus, CAN, or EtherCAT slave stacks. Its -40 °C to +85 °C industrial temperature range and 1.6-3.6 V supply tolerance meet typical 24V industrial backplane requirements when paired with an external regulator.
Được đề xuất
Building Automation & HVAC Controller
Building automation controllers require deterministic I/O handling for relays, TRIACs, and sensor arrays, all of which the ATXMEGA128A1-CUR's event system and timers manage with minimal CPU load. The 128 KB Flash supports BACnet, Modbus, or KNX protocol stacks, and the dual 12-bit DACs simplify 0-10 V analog actuator outputs. Compared to PIC32 alternatives, the AVR toolchain offers faster compile cycles and a more mature hobbyist library base.
Được đề xuất
USB Human Interface Device (HID) & Peripherals
For USB HID devices, the ATXMEGA128A1-CUR's 32 MIPS throughput delivers responsive HID polling at 1000 Hz while leaving CPU headroom for HID descriptor parsing and debouncing. Designers commonly pair it with an external USB transceiver or migrate to the ATXMEGA128A1U variant when on-chip USB is needed. The 8 KB SRAM comfortably accommodates USB endpoint buffers plus HID report staging.
Được đề xuất
Smart Energy Metering & Power Monitoring
Single-phase and polyphase smart meters benefit from the ATXMEGA128A1-CUR's 12-bit 2 Msps ADC for voltage and current sensing, plus its DMA to offload continuous sampling without CPU bottleneck. The 128 KB Flash accommodates DLMS/COSEM or IEC 62056 protocol stacks, and the RTC with 16-bit timer supports time-of-use billing logic. For higher accuracy metering, designers can pair it with the ATM90E36A energy AFE.
Được đề xuất
Low-Power Wireless Sensor Platform
Wireless sensor platforms running Zigbee, LoRa, or proprietary sub-GHz protocols pair an XMEGA host with a radio transceiver; the ATXMEGA128A1-CUR's 78 GPIO pins handle multiple sensor inputs and the 128 KB Flash supports full Zigbee stack images. While the XMEGA core lacks deep-sleep modes of modern ARM parts, its 1.6 V minimum supply allows direct battery operation. Sleep current is dominated by the radio, not the MCU.
Được đề xuất
Motor Control Signal Processor & BLDC Commutation
The ATXMEGA128A1-CUR's eight 16-bit timer/counters with PWM and compare modes handle 6-step BLDC commutation, FOC peripherals, or multi-channel DC motor control. With DMA offloading ADC sampling for back-EMF sensing, the core has bandwidth for closed-loop PID at kHz rates. Designers building complete motor drives typically pair it with gate drivers and FET bridges.
Được đề xuất
Portable Medical & Wellness Devices
Battery-powered medical and wellness devices benefit from the ATXMEGA128A1-CUR's low-voltage operation (down to 1.6 V), industrial temperature range, and rich 12-bit ADC for biosignal acquisition (ECG, EMG, SpO2 front-ends). The 128 KB Flash supports FDA-style firmware versioning and BLE pairing stacks via an external radio. For higher analog accuracy, designers may migrate to ATSAM-L21 Cortex-M0+ for integrated op-amps.
Được đề xuất
IoT Edge Node & Data Logger
Edge IoT nodes that log data locally before cloud sync benefit from the ATXMEGA128A1-CUR's 128 KB Flash (for OTA staging area), 8 KB SRAM (for buffered samples), and 2 KB EEPROM (for non-volatile configuration). The external bus interface supports SRAM or NOR Flash expansion for high-volume data logging. The 78 GPIO pins drive multiple indicator LEDs, user buttons, and external sensors.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATXMEGA128A1-CUR — 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 | ATXMEGA64A1-CUR | ATXMEGA192A1-CUR | ATXMEGA256A1-CUR |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-ball TFBGA (CBGA) 9x9 mm | 100-ball TFBGA (CBGA) 9x9 mm - same | 100-ball TFBGA (CBGA) 9x9 mm - same | 100-ball TFBGA (CBGA) 9x9 mm - same |
| Flash Memory | 128 KB | 64 KB (-50%) | 192 KB (+50%) | 256 KB (+100%) |
| SRAM | 8 KB | 8 KB | 16 KB | 16 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 4 KB |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| USB Controller | None | None | None | None |
| GPIO Count | 78 | 78 | 78 | 78 |
| Unit Price (Qty 1, USD) | 10.82 | Lower (less Flash) | Higher (more Flash) | Higher (more Flash) |
Bảo phân biệt quan trọng
- Mid-density Flash with read-while-write support (vsATXMEGA64A1-CUR)
- Lower power consumption than larger Flash variants (vsATXMEGA256A1-CUR)
- Full peripheral set without USB controller overhead (vsATXMEGA128A1U-CUR)
Ghi chú thiết kế
The 100-ball TFBGA (CBGA) package uses 0.8 mm ball pitch - this is below the 0.4 mm IPC-7351 'easy' threshold and requires 4-layer PCB construction with laser-drilled or precision tented vias in the land pattern. Use NSMD (non-solder mask defined) pads with a 0.30 mm pad diameter and 0.45 mm solder mask opening per the Microchip land pattern recommendation. Place a continuous ground plane on layer 2 directly under the BGA to control return paths and minimize EMI. Via-in-pad is acceptable but requires filling and planarizing for production reliability.
Estimated: at 32 MHz active, VCC = 3.3 V, the ATXMEGA128A1-CUR draws approximately 15 mA typical per the XMEGA A1 datasheet DC characteristics. Place a 100 nF ceramic decoupling capacitor within 3 mm of every VCC/GND pair - typically a 0402 size X7R works. Add a single 4.7 µF X5R bulk capacitor at the package edge to handle transient switching. For PDI programming, hold the RESET line stable during programming cycles by adding a 10 kΩ pull-up to VCC and a 100 nF cap to GND to filter noise.
Do not assume the ATXMEGA128A1-CUR is interchangeable with the ATXMEGA128A1U-CUR - the 'U' variant has an on-chip USB 2.0 controller with PHY and uses different pin assignments for D+/D-/VBUS, breaking pin compatibility despite the same package. Also, do not confuse the ATXMEGA128A1-CUR (TFBGA-100) with the ATXMEGA128A1-AU (TQFP-100) - they share silicon but the TFBGA-to-TQFP mapping is not 1:1 for all ball/pin numbers. Always re-route the PCB if migrating between packages. Finally, since this part is NRND per Microchip, design new products on the XMEGA AU family.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page; not AEC-Q100 qualified - choose ATSAM automotive parts for vehicle applications
