STM32F103是一款高性价比、多功能的单片机，配备常用的32位单片机片外资源，基于ARM Cortex-M3的32位处理器芯片，片内具有256KB FLASH，48KB RAM ( 片上集成12Bit A/D、D/A、PWM、CAN、USB、SDIO、FSMC等资源)。是应用的较为广泛的一款单片机，
内置48KB RAM在产品设计过程中如需要外扩SRAM存储器，采用一款由VTI科技公司推出的VTI7064专用STM32单片机外扩的串口SRAM,电源电压范围从4.5V到5.5V，其典型电压值为5.0V，商用芯片工作温度范围0~70℃，芯片工作温度范围-40~+85℃，以低功耗和高可靠的特性被广泛应用于低功耗便携式产品中，如电信设备、工业控制、POS机、无人机、医疗电子等应用。
| Density | Organization | Part NO. | Vcc(V) | Speed(MHz) | Bus Modes | Temp. | Package |
| 64Mbit | 8M x 8 | VTI7064LSM | 1.8 | 104 | SQI | C,I | 8-SOIC |
| 64Mbit | 8M x 8 | VTI7064LSM | 1.8 | 20 | SPI | C,I | 8-SOIC |
| 64Mbit | 8M x 8 | VTI7064MSM | 3 | 104 | SQI | C,I | 8-SOIC |
| 64Mbit | 8M x 8 | VTI7064MSM | 3 | 20 | SPI | C,I | 8-SOIC |
| 32Mbit | 4M x 8 | VTI7032LSM | 1.8 | 20 | SPI | C,I | 8-SOIC |
| 32Mbit | 4M x 8 | VTI7032LSM | 1.8 | 133 | SQI | C,I | 8-SOIC |
| 16Mbit | 2M x 8 | VTI7016LSM | 1.8 | 20 | SPI | C,I | 8-SOIC |
| 16Mbit | 2M x 8 | VTI7016LSM | 1.8 | 133 | SQI | C,I | 8-SOIC |
| 1Mbit | 128K x 8 | VTI7001LSM | 1.8 | 20 | SPI | C,I | 8-SOIC |
| 1Mbit | 128K x 8 | VTI7001NSM | 3.3 | 20 | SPI | C,I | 8-SOIC |
| 512Kbit | 64K x 8 | VTI7512LSM | 1.8 | 20 | SPI | C,I | 8-SOIC |
| 512Kbit | 64K x 8 | VTI7512NSM | 3.3 | 20 | SPI | C,I | 8-SOIC |
| 256Kbit | 32K x 8 | VTI7256LSM | 1.8 | 20 | SPI | C,I | 8-SOIC |
| 256Kbit | 32K x 8 | VTI7256NSM | 3.3 | 20 | SPI | C,I | 8-SOIC |
| 128Kbit | 16K x 8 | VTI7128LSM | 1.8 | 20 | SPI | C,I | 8-SOIC |
| 128Kbit | 16K x 8 | VTI7128NSM | 3.3 | 20 | SPI | C,I | 8-SOIC |
我司提供各大品牌SRAM存储器，VTI代理等点击以下链接直接选型
https://www.sramsun.com/list-339-1.html