A34L716VLN

The A34L716VLN is a low-power 32-bit microcontroller based on an Arm Cortex-M4F CPU with FPU, running up to 32 MHz. It integrates up to 256 KB of code flash (with ECC), 32 KB of data flash (with ECC) and 24 KB of SRAM, and operates from 1.8 V to 3.6 V.

Designed for battery-operated and embedded applications, the device combines mixed-signal peripherals, multiple serial interfaces and low-power modes to support sensor acquisition, user interfaces and portable controls while extending battery life.

Key Features

• Core  Arm® Cortex®-M4 CPU with FPU running up to 32 MHz, providing deterministic 32-bit processing for control and signal tasks.
• Memory  256 KB code flash with ECC and 32 KB data flash with ECC plus 24 KB SRAM for program and data storage.
• Power and Clock  Wide operating voltage 1.8 V to 3.6 V with power-on/power-down resets and low-power SLEEP and DEEP-SLEEP modes; internal oscillators (32 MHz HSI and 40 kHz LSI) and support for external main/sub oscillators and PLL up to 48 MHz.
• Timers and RTC  Multiple timers including 16-bit (8 channels with PWM, capture, prescaler) and 32-bit timers, free-run timer, real-time clock and a 32-bit watchdog timer for robust timing and control.
• Analog  Two 12-bit ADCs with 24 input channels, two 12-bit DAC channels and two OPAMPs for on-chip analog acquisition and signal conditioning.
• Interfaces and Connectivity  Rich serial connectivity with USB 2.0 Full-Speed, SPI ×2, I2C ×2, USART ×2, UART ×1 and LPUART ×2 for peripherals, sensors and host communication.
• DMA and System Support  7-channel DMA with 8/16/32-bit transfers, CRC calculation unit (CRC32/CRC16/CRC8 options) and NVIC with 86 interrupt sources for efficient data movement and reliable system operation.
• Display and ID  Integrated LCD driver supporting up to 4×44 or 8×40 segments with contrast control, plus a 128-bit unique ID for device identification.
• Package and Temperature  100-LQFP (14 × 14 mm, 0.5 mm pitch) surface-mount package and industrial operating temperature range −40 °C to +85 °C.

Typical Applications

• Battery-powered portable devices  Low-voltage operation, low-power modes and integrated peripherals make the device suitable for portable and handheld applications.
• Sensor acquisition and analog processing  Dual 12-bit ADCs, DACs and OPAMPs enable compact analog front-ends for sensor hubs and instrumentation.
• User interfaces and display control  On-chip LCD driver, multiple serial interfaces and sufficient I/O support control for compact user interface panels.
• Embedded control and timing  Multiple timers, PWM support and watchdog/RTC functions support precise control and reliable system supervision.

Unique Advantages

• Integrated mixed-signal peripherals: ADCs, DACs and OPAMPs on-chip reduce external component count for compact analog designs.
• Comprehensive connectivity: USB Full-Speed plus multiple UART/USART/I2C/SPI ports enable flexible peripheral and host communication without additional controllers.
• Memory with ECC: Code and data flash with ECC provide improved data integrity for firmware and data storage.
• Low-voltage, low-power operation: 1.8 V–3.6 V supply range with dedicated low-power modes supports battery-operated designs and extends run-time.
• Rich timing and control resources: 16-bit and 32-bit timers, PWM modes and a 32-bit watchdog support precise control and system reliability.
• Ready for display and ID tasks: Built-in LCD driver and 128-bit unique ID simplify user interface and identification implementations.

Why Choose A34L716VLN?

The A34L716VLN positions itself as a compact, feature-rich MCU for embedded designs that require mixed-signal capability, multiple serial interfaces and low-power operation. Its Cortex-M4F core, on-chip analog peripherals and ECC-protected flash provide a balanced platform for portable instrumentation, sensor hubs and UI-driven products.

With a broad set of timers, DMA, CRC and system supervision features in a 100-LQFP package and industrial temperature rating, the device is suitable for engineers seeking an integrated solution that reduces BOM and simplifies board-level design while maintaining robustness for long-term deployment.

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