【资料分享】常用于PKE无钥匙进入系统里的高度集成的低功耗SOC芯片：Si24R05B

wintec2022 发表于 2025-1-15 18:13

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<div>
<div>
<p >当芯片处于低功耗待机模式时，用户携带内置合法芯片的智能钥匙设备，走到智能汽车旁时，内部的3D低频唤醒接收器侦测到芯片信号唤醒MCU激活所有外设，芯片启动无线收发模块，完成身份验证并开放车门权限，无需掏出钥匙，直接丝滑上车。</p>

<div style="text-align: center;"></div>

<p >具有低功耗、Low Pin Count、宽电压工作范围，集成了13/14/15/16位精确度的ADC、LVD、UART、SPI、I2C、TIMER、WUP、IWDG、RTC、无线收发器、3D低频唤醒接收器等丰富的外设。</p>

<p >内核采用RISC-V RV32IMAC（2.6 CoreMark/MHz），配套的调试开发软件和丰富的函数库，能大大降低开发门槛和缩短开发周期。</p>

<div style="text-align: center;"></div>

<p >支持5个不同的时钟源且内核时钟和外设时钟的时钟源与分频比可以独立配置。</p>

<p >GPIO是用户可配置的通用IO，每一个GPIO口都可以独立配置成输入、输出、外设复用功能或模拟功能。每一个IO都有一个拆分器把复用功能连通，通过GPIO_AFRL和GPIO_AFRH两个寄存器来控制具体复用到哪个功能。</p>

<div style="text-align: center;"></div>

<p >● 内置 RISC-V RV32IMAC 内核（2.6 CoreMark/MHz）；</p>

<p >● 蕞高 32MHz 工作频率；</p>

<p >● 内置 4kB 的 SRAM；</p>

<p >● 内置 32kB 的嵌入式 FLASH，4.5kB 的信息块，至少能擦写 100 000 次；</p>

<p >● 内置 1 个 SPI MASTER；</p>

<p >● 内置 1 个 I2C MASTER；</p>

<p >● 内置 2 个 UART 支持蕞高 1Mbps；</p>

<p >● 内置 2 个高级 TIMER，TIMER1 具有 4 路互补 PWM；</p>

<div style="text-align: center;"></div>

<p >● 1 个 64 位系统定时器 SysTick (MTIME)，不可用于授时；</p>

<p >● 内置 1 个快速的高精确度 13/14/15/16bit ADC，集成 1.2V 高精确度基准；</p>

<p >● 宽 ADC 输入电压范围：0 ~ 4.8V，最大输入电压不得高于 VDD_MCU 电</p>

<p >压；</p>

<p >● ADC 支持 5 个输入通道，其中 2 个可用于外部电压测量；</p>

<p >● 内置低压检测模块；</p>

<p >● 蕞多支持 10 个 GPIO，其中 8 个支持外部中断；</p>

<p >● 内置硬件看门狗；</p>

<p >● 内置 1 个 RTC，可用于授时；</p>

<p >● 内置 1 个 WUP；</p>

<p >● 集成无线收发器；</p>

<div style="text-align: center;"></div>

<p >● 集成 3D 低频唤醒接收器；</p>

<p >● 支持 4 种低功耗模式，蕞低功耗小于 0.6uA（看门狗工作）；</p>

<p >● 内置 32 位真随机数发生器；</p>

<p >● 支持 cJTAG 2 线调试接口；</p>

<p >● 工作电压范围：1.8 ~ 3.6V；</p>

<p >● 超低功耗，蕞低功耗达 1.6uA（MCU 处于掉电模式，无线收发模块处于</p>

<p >关断模式）；</p>

<p >● 工作温度范围-40 ~ 85℃；</p>

<p >● 支持 TSSOP24 封装；</p>

<p >● 极少外围器件，降低系统应用成本；</p>
</div>
</div>

XUANSHI 发表于 2025-1-15 18:51

<h3>功能特点</h3>

<p> </p>

<ul>
<li><strong>高度集成</strong>：集成了 13/14/15/16 位精度的 ADC、LVD、UART、SPI、I2C、TIMER、WUP、IWDG、RTC 等丰富的外设，还集成无线收发器及 3D 低频唤醒接收器，可有效减少外部器件使用，降低系统成本和复杂度。</li>
<li><strong>低功耗</strong>：采用高效电源管理方案，具备多种低功耗模式，最低功耗可达 1.6uA（MCU 处于掉电模式，无线收发模块处于关断模式），可有效延长设备电池续航时间。</li>
<li><strong>通信能力强</strong>：无线收发器专为低成本无线场合设计，集成嵌入式 ARQ 基带协议引擎，抗干扰能力和信号传输能力强。3D 低频唤醒接收器可调节通道灵敏度，能在噪声环境下工作，实现更长通信距离。</li>
<li><strong>开发便捷</strong>：配套有成熟的开发调试软件和丰富的函数库，支持 cJTAG2 线调试接口，可大大降低开发门槛，缩短开发周期。</li>
<li> </li>
</ul>

qzgiky 发表于 2025-1-16 10:01

<p>不错的资料，学习汽车电子，需要多阅读相关资料，集大成</p>

wintec2022 发表于 2025-1-21 14:02

qzgiky 发表于 2025-1-16 10:01
不错的资料，学习汽车电子，需要多阅读相关资料，集大成

<p>多多分享出来，大家互相探讨</p>

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【资料分享】常用于PKE无钥匙进入系统里的高度集成的低功耗SOC芯片：Si24R05B