昂瑞微电子旗下OM6651A——第二颗车规级低功耗蓝牙芯片,成功通过涵盖机械应力、温湿度循环等7大类共41项极限测试,斩获赛宝实验室颁发的AEC Q-100 Grade1认证(-40~125℃)。这颗采用3x2.7x0.5mm极薄LGA封装的芯片,以超低功耗与越级稳定性突破国产车规级芯片性能边界,确保在极寒、高温等极端工况下依然稳定运行,重新定义车载无线连接的技术标杆。 OM6651A 是一款功率优化的片上系统(SOC)解决方案,适用于蓝牙低功耗(Bluetooth Low Energy)和专有 2.4GHz 频段应用场景。其核心集成特性如下: 集成高性能、低功耗的射频(RF)收发器,同时包含蓝牙基带与丰富的外设 IO 扩展接口。 内置电源管理单元(PMU),可实现高效的电源管理,降低整体功耗。 性能标杆:搭载ARM Cortex M4内核(64MHz主频),配备80KB SRAM+1MB Flash,其高性能射频收发机可支持无线BMS大规模组网应用场景的超低延迟数据处理。 能效革命:峰值功耗仅4.2mA@0dBm(发射)/3.4mA@1Mbps(接收),在胎压监测应用中可匹配轮胎全生命周期使用需求。-98dBm超高灵敏接收与8dBm强发射功率,确保复杂车载环境下的信号穿透力。 空间魔术:较传统方案减薄约41.18%,以0.5mm超薄封装通过严苛的AEC Q-100 Grade1认证测试,彰显芯片可靠性设计的严谨性。 OM6651A性能特点如下: 射频部分: • -98dBm sensitivity @ 1Mbps GFSK • TX Power -30 to +8dBm • AGC (Auto Gain Control) • RSSI (1dB Resolution) MCU部分: • ARM® Cortex™-M4, max 64MHz • SWD interface 存储空间 • EFUSE: 256-bit • SRAM: 80KB • Serial Flash: 1MB • I-Cache RAM: 8KB 时钟: • 32MHz & 32.768kHz crystal oscillators • 32MHz & 32.768kHz RC oscillators 无线链路: • BT 5.4 LE PHY, link controller • Proprietary 2.4-GHz link controller 电池管理单元 • Single power supply voltage: 1.71V ~ 3.6V • 3.4mA peak current in RX • 4.2mA peak current in TX (0dBm) • 1.2uA in sleep mode (with 16K RAM retention, 32KHz RC) • Integrated DCDC BUCK Converter 支持的协议 • Compatible with Bluetooth 5.4 • Supported data rates: 1Mbps, 2Mbps (BLE) • Multiple configurable air data rate from 25Kbps to 2Mbps (2.4G) • Supports mesh network • Sample applications and profiles • Supports OTA 外设接口 • Up to 15 General Purpose I/O pins • 8 x DMA • 2 x UART • 1 x I2C interface (master only) • 2 x SPI interface • 1 x 16-bit Timer/Counter with 4 Compare/Capture/PWM channels • 2 x 16-bit Timer/Counter with 4 Compare/PWM channels (These two timers can combine to one 32-bit PWM timer) • 1 x 32-bit Real Time Counter with 3 Compare channels • 1 x 16-bit Low Energy Timer with 2 Compare/PWM channels • 1 x Watchdog Timer • 8 channels single-end 12-bit GPADC, up to 333.3ksps (precision and sample rate can be configured) 安全与隐私 • AES HW encryption • Support AES-256/AES-128 key • HW Random Number Generator 封装及工作温度 • OM6651A: LGA 3mmx2.7mm • AEC-Q100 Grade1 • -40 ℃ ~ +125 ℃ 芯片引脚图如下:
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