【经验】如何理解64M-bit串行闪存GD25Q64C的SRP1功能？

时间： 2019-11-20 来源：世强

技术问答

兆易创新（GigaDevice），专注于NOR FLASH和NAND FLASH存储器的设计研发，其产品已通过GQS ISO9001及ISO14001等管理体系的认证，被广泛应用于汽车，安防，工控，消费类等领域。GD25Q64C是兆易创新推出的64M-bit串行闪存，除了支持标准的串行外设接口（SPI），还支持双/四路SPI：串行时钟、片选、串行数据I/O0（SI）、I/O1（SO）、I/O2 (WP#), and I/O3 (HOLD#)。双I/O数据传输速度为240Mbits/s，四组I/O和四组输出数据传输速度为480bit /s。

在实际应用中，我们看到在GD25Q64C串行闪存的具体型号中带有个“S”，例如：GD25Q64CFIS，GD25Q64CPIS，那么型号中的“S”代表什么意思呢？本文将详细介绍。

如下图所示，我们结合芯片编号信息，可以知道，末位第二位为”S”的型号，是具有SRP1功能。

SRP1功能的具体定义，我们从手册上看到，SRP1/0是状态寄存器保护位，从下图中，可以看出，将SRP1和SPR0同时置1，可以实现芯片的一次性编程功能，也就是可以实现对芯片数据永久保护。

另外，我们从上图中可以看出，SRP1还具有另外一个功能，当SRP1为1，而SPR0为0时，状态寄存器受到保护，无法再次写入数据，直到下一次断电，再上电，这样可以防止程序运行过程中，数据被改写。

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Gigadevice（兆易创新）存储器/32位通用型MCU/智能人机交互传感器/电源产品选型指南（中文）

目录- 公司简介 GD32 MCU ARM® Cortex®32位通用MCU GD30 PMU SPI NOR FLASH SPI NAND Flash 并口NAND Flash Flash产品封装形式电容触控芯片指纹传感器 DDR3L DDR4L

型号- GD32E505ZCT6,GD32E230F8V6,GD32F150,GD25LE128E,GD25LD05C,GD32F205ZKT6,GD32E507RCT6,GD32F101VDT6,GSL6182GS1,GD32L233KBQ6,GD32F330G6U6,GD32F427VEH6,GD32F427RET6,GD32F427VKT6,GD32VF103,GD32F103C4T6,GD32F130G4U6,GD32F105RFT6,GDP2A8LM-WA,GD32F350K4U6,GDP2A8LM-WB,GD32F303VBT6,GD32F207RKT6,GD9FU8GXE2A,GD32F407IKH6,GD32F310C8T6,GD32E232K8Q7,GD32F150C4T6,GD32F403RGT6,GD25LX512ME,GD32F403VGH6,GD9FU4GXF2A,GD32VF103VBT6,GD5F4GM8RE,GD32F107RBT6,GD32F101TBU6,GD32F101C8T6,GD32F103ZET6,GD32E230F6P6,GD25LE16E,GD32F103RIT6,GD32F305ZET6,GD32F307RCT6,GD25Q16C,GD32F350C6T6,GD25Q16E,GD32F101VET6,GD32E103T8U6,GD32F470ZIT6,GD5F1GM7UE,GD9FU4GXF3A,GD32F101ZKT6,GD32VF103C6T6,GD25LT512ME,GD32F207ZET6,GD32C103TBU6,GD55LT02GE,GSL3692,GD25WD40E,GD32E508VET6,GD32F105RET6,GSL2681C,GD32EPRTVDT6,GD32E503CET6,GD25WD40C,GD32F303VCT6,GD32F303ZIT6,GD25LH32E,GD32E230C4T6,GDP1BFLM-IB,GDP1BFLM-IA,GD32L233C8T6,GD25F128F,GD25WQ80E,GD9FU1G8F2D,GD32F407VET6,GD32F205VCT6,GD32F103R8T6,GD9FU4GXF4B,GD32F407ZKT6,GD32F303CGT6,GD32F103ZDT6,GD32F107VGT6,GD25LB512ME,GD32F470,GSL2338,GD32F350,GD32F205VGT6,GD5F1GM7RE,GD32F450ZET6,GD32E230F6V6,GD32E103CBT6,GD9FU1GXF3A,GD32F105ZCT6,GD32F330G4U6,GD32F427VGH6,GD32F303RKT6,GD32F103CBT6,GD25LF128E,GD32E503ZET6,GD32F101VBT6,GD32F427RGT6,GD55LT01GE,GSL3676,GD5F2GQ5RE,GDP1BFLM-CB,GDP1BFLM-CA,GD32F130K8U6,GD32F305RGT6,GD30WS,GD25LR64E,GD32EPRT,GD32F150C6T6,GD32F310K6T6,GD25LF32E,GD32E103R8T6,GD32F103ZGT6,GD32F403VEH6,GD9FU1GXF2A,GD32F403RET6,GSL3680,GD32F350K6U6,GD32F101C6T6,GD32F403VKT6,GD32E505RET6,GD32F107RDT6,GD32E230G8U6,GD32F103RKT6,GD32E230F4P6,GDQ2A8AA-WJ,GD25LR256E,GD25LQ20E,GD32F130K8T6,GD25LQ32E,GD32F130,GD25LQ20C,GD32F305ZCT6,GD25LE255E,GD32F307RET6,GD25WR256E,GD32F310K8U6,GDQ2A8AA-WE,GD32F470ZGT6,GD32F350C8T6,GD32F150K4U6,GD32F101ZIT6,GD32F405VGT6,GD32F207ZGT6,GSL3670D,GD32VF103TBU6,GD32VF103C8T6,GDQ2A8AA-WQ,GD25R512ME,GD32F101VCT6,GD32F105RGT6,GD32E503CCT6,GD25WD20C,GD25WD20E,GD32F470VKH6,GD32E23X系列,GD25R32C,GD25LH40E,GD32F425VKH6,GD32F303ZGT6,GD32F103ZFT6,GD32F425RKT6,GD32F205VET6,GD32F303CET6,GD32F107RCT6,GD32W515PIQ6,GD32F425ZGT6,GD32F101V8T6,GD5F1GQ5UEYIGR,GD25R256E,GD32F407ZET6,GD32F450VIT6,GD30DR8306KU,GD55X01GE,GSL7000A,GD32F205RKT6,GD32F101RBT6,GD32F330K8U6,GDP2BFLM-WB,GD32F103C8T6,GD32F330RBT6,GD32F105ZET6,GD25WB256E,GDP2BFLM-WA,GD32F101T6U6,GD32F150C8T6,GD32F207RGT6,GD32F130K6U6,GD32E507ZCT6,GD30WS8805EU,GD32F427IEH6,GDP1A8LM-IA,GD32VF103CBT6,GD25LR128E,GD32F403VCH6,GD32F103ZIT6,GDP1A8LM-IB,GD32F4系列,GD32F307ZCT6,GD32F403RCT6,GD32F350K8U6,GD32F350RBT6,GD32F107RFT6,GD32F403VIT6,GD32VF103R8T6,GD32C103RBT6,GD32F103VCT6,GSL6150N,GD32F130K6T6,GD30BC,GD5F2GQ5UE,GD32E230K4U6,GD32F307RGT6,GD55X02GE,GD9AS2GXF3A,GD32F150K6U6,GD32F470ZET6,GD32F305VCT6,GD25B64E,GD32F101RCT6,GD32F4,GD32F105R8T6,GD25B64C,GD32F405ZKT6,GD32F407IGH6,GD32F2,GD32F3,GD32F101VIT6,GD32F1,GD9AU4GXF3A,GD32F105ZDT6,GD32E503VET6,GD25LF255E,GD32F427ZET6,GD30WS8662DY,GD25WD80C,GD32F407RKT6,GD32F470VIH6,GD32F407VKH6,GD25LH16E,GD32E230C8T6,GD32E230K4T6,GDQ2BFAA-WE,GD32F303VGT6,GDQ2BFAA-WJ,GD32E232E4U7,GD25LX256E,GD32F205ZET6,GD32E5,GD25LD80C,GD32F407ZGT6,GD25LD80E,GD32E1,GD32F310F8P6,GD25LQ255E,GD32F3系列,GD32F330K8T6,GSL1686F,GD32W515TIQ6,GD32F103VBT6,GD32F107RET6,GD32F425ZKT6,GD32E505ZET6,GD9FS4GXF2A,GD32F427VKH6,GD32F450VKT6,GD32F330K6U6,GD32F101VFT6,GD25D80E,GD32F427RKT6,GDQ2BFAA-WQ,GD32E5系列,GD32E507RET6,GD25WD80E,GSL1691F,GD32F105ZGT6,GD25D80C,GD32F101T4U6,GD32F103C6T6,GD25LF16E,GD32F350R4T6,GD9AS4GXF3A,GD32F405ZGT6,GD32F207IKT6,GD32F427IGH6,GD32F307ZET6,GD32F103ZKT6,GD32F403VGT6,GD32F350G4U6,GD32F130K4U6,GD32E103VBT6,GD25LQ16E,GD25B128E,GD32F103VET6,GSL1680F,GD25LQ128E,GD25LQ16C,GD9FU2GXF3A,GD25LQ128D,GD32E230F8P6,GD32F403VET6,GD32F130C8T6,GD30WS8815EU,GD32F305ZGT6,GD32F150K8U6,GD32F407IEH6,GD32F101VGT6,GD32W515,GD32F130K4T6,GD30DR8413EU,GD32F103TBU6,GD25B127D,GD32F207ZCT6,GD32VF103C4T6,GD32F105ZFT6,GD25B512ME,GD5F4GQ6UE,GD32E503VCT6,GD32F470VGH6,GD32F427ZGT6,GD9FS4GXF3A,GD32E508RET6,GD32F303ZKT6,GD32E230C6T6,GD32F303VET6,GD32E232E6U7,GD32F330K6T6,GDP1A8LM-CB,GD32L233KBT6,GD32F205ZGT6,GDP1A8LM-CA,GD32F107RGT6,GD32F107ZCT6,GD32F103VDT6,GD9AU2GXF3A,GD32L23X,GD32F450VET6,GD32F450ZKT6,GD25Q127C,GD32F330C8T6,GD32F205RGT6,GD32F101R6T6,GD30LD3301FU,GD32E503,GD30LD,GD25WD05C,GD32F303RET6,GD32F303VKT6,GD32E507,GD32F330K4U6,GD32E505,GD32F101RFT6,GD32E508,GDP1BFLM-WB,GD32F105VCT6,GD25D20C,GDP1BFLM-WA,GD55LX02GE,GD25D20E,GSL6186,GD32E103C8T6,GD32VF103R4T6,GD32F207RCT6,GD32F350R6T6,GD32F305VGT6,GD32F130F8P6,GD25LB32E,GD25LF80E,GD5F4GQ6RE,GD32F307ZGT6,GD32F207IET6,GD32E505VET6,GD32F107ZDT6,GD32F403ZKT6,GD32F103VGT6,GD32F350G6U6,GD32VF103T8U6,GD25LQ80C,GD32F450IKH6,GD32F403VCT6,GD32F403ZIT6,GD32F405VKH6,GD9FU4G8F2AMGI,GD32F310F4P6,GD32F130C6T6,GD32F310G8U6,GD9FS2GXF3A,GD32F150G4U6,GD32E230K8U6,GD32F103T4U6,GD32C103,GD25LQ80E,GD5F1GQ5UE,GDQ2A8AA-CE,GD32F101RGT6,GDQ2A8AA-CJ,GD32F105VBT6,GD25B256E,GD32F405RKT6,GD32F470VKT6,GD32E503RCT6,GD32F101ZCT6,GD9FU2GXF2A,GD25Q128E,GD32F407VGH6,GD32F150R4T6,GD32F407RGT6,GD32E232E8U7,GSL6135N,GDP2A8LM-IA,GDP2A8LM-IB,GD32F30

选型指南 - 兆易创新 - 2022/1/26 PDF 中文下载

Gigadevice（兆易创新）存储器/32位通用型MCU/智能人机交互传感器/电源产品选型指南（英文）

目录- Company profile GD32 MCU 32-bit ARM® Cortex® MCUs GD30 PMU SPI NOR FLASH SPI NAND Flash Parallel NAND Flash Flash Package Options Capacitive Touchscreen Controller Fingerprint Sensor

型号- GD32E505ZCT6,GD32E230F8V6,GD32F150,GD25LE128E,GD32F3 SERIES,GD25LD05C,GD32F205ZKT6,GD32E507RCT6,GD32F101VDT6,GSL6182GS1,GD32L233KBQ6,GD32F330G6U6,GD32F427VEH6,GD32F427RET6,GD32F427VKT6,GD32VF103,GD32F103C4T6,GD32F130G4U6,GD32F105RFT6,GDP2A8LM-WA,GD32F350K4U6,GDP2A8LM-WB,GD32F303VBT6,GD32F207RKT6,GD9FU8GXE2A,GD32F407IKH6,GD32F310C8T6,GD32E232K8Q7,GD32F150C4T6,GD32F403RGT6,GD25LX512ME,GD32F403VGH6,GD9FU4GXF2A,GD32VF103VBT6,GD5F4GM8RE,GD32F107RBT6,GD32F101TBU6,GD32F101C8T6,GD32F103ZET6,GD32E230F6P6,GD25LE16E,GD32F103RIT6,GD32F305ZET6,GD32F307RCT6,GD25Q16C,GD32F350C6T6,GD25Q16E,GD32F101VET6,GD32E103T8U6,GD32F470ZIT6,GD5F1GM7UE,GD9FU4GXF3A,GD32F101ZKT6,GD32VF103C6T6,GD25LT512ME,GD32F207ZET6,GD32C103TBU6,GD55LT02GE,GSL3692,GD25WD40E,GD32E508VET6,GD32F105RET6,GSL2681C,GD32EPRTVDT6,GD32E503CET6,GD25WD40C,GD32F303VCT6,GD32F303ZIT6,GD25LH32E,GD32E230C4T6,GDP1BFLM-IB,GDP1BFLM-IA,GD32L233C8T6,GD25F128F,GD25WQ80E,GD9FU1G8F2D,GD32F407VET6,GD32F205VCT6,GD32F103R8T6,GD9FU4GXF4B,GD32F407ZKT6,GD32F303CGT6,GD32F103ZDT6,GD32F107VGT6,GD25LB512ME,GD32F470,GSL2338,GD32F350,GD32F205VGT6,GD5F1GM7RE,GD32W5 SERIES,GD32F450ZET6,GD32E230F6V6,GD32E103CBT6,GD9FU1GXF3A,GD32F105ZCT6,GD32F330G4U6,GD32F427VGH6,GD32F303RKT6,GD32F103CBT6,GD25LF128E,GD32E503ZET6,GD32F101VBT6,GD32F427RGT6,GD55LT01GE,GSL3676,GD5F2GQ5RE,GDP1BFLM-CB,GDP1BFLM-CA,GD32F130K8U6,GD32F305RGT6,GD30WS,GD25LR64E,GD32EPRT,GD32F150C6T6,GD32F310K6T6,GD25LF32E,GD32E103R8T6,GD32F103ZGT6,GD32F403VEH6,GD9FU1GXF2A,GD32F403RET6,GSL3680,GD32F350K6U6,GD32F101C6T6,GD32F403VKT6,GD32E505RET6,GD32F107RDT6,GD32E230G8U6,GD32F103RKT6,GD32E230F4P6,GDQ2A8AA-WJ,GD25LR256E,GD25LQ20E,GD32F130K8T6,GD25LQ32E,GD32F130,GD25LQ20C,GD32F305ZCT6,GD25LE255E,GD32E1 SERIES,GD32F307RET6,GD25WR256E,GD32F310K8U6,GDQ2A8AA-WE,GD32F470ZGT6,GD32F350C8T6,GD32F150K4U6,GD32F101ZIT6,GD32F405VGT6,GD32F207ZGT6,GSL3670D,GD32VF103TBU6,GD32VF103C8T6,GDQ2A8AA-WQ,GD25R512ME,GD32F101VCT6,GD32F105RGT6,GD32E503CCT6,GD25WD20C,GD25WD20E,GD32F470VKH6,GD25R32C,GD25LH40E,GD32F425VKH6,GD32F303ZGT6,GD32F103ZFT6,GD32F425RKT6,GD32F205VET6,GD32F303CET6,GD32F107RCT6,GD32W515PIQ6,GD32F425ZGT6,GD32F4 SERIES,GD32F101V8T6,GD5F1GQ5UEYIGR,GD25R256E,GD32F407ZET6,GD32F450VIT6,GD30DR8306KU,GD55X01GE,GSL7000A,GD32F205RKT6,GD32F101RBT6,GD32F330K8U6,GDP2BFLM-WB,GD32F103C8T6,GD32F330RBT6,GD32F105ZET6,GD25WB256E,GDP2BFLM-WA,GD32F101T6U6,GD32F150C8T6,GD32F207RGT6,GD32F130K6U6,GD32E507ZCT6,GD30WS8805EU,GD32F427IEH6,GDP1A8LM-IA,GD32VF103CBT6,GD25LR128E,GD32F403VCH6,GD32F103ZIT6,GDP1A8LM-IB,GD32F307ZCT6,GD32F403RCT6,GD32F350K8U6,GD32F350RBT6,GD32F107RFT6,GD32F403VIT6,GD32VF103R8T6,GD32C103RBT6,GD32F103VCT6,GSL6150N,GD32F130K6T6,GD30BC,GD5F2GQ5UE,GD32E230K4U6,GD32F307RGT6,GD55X02GE,GD9AS2GXF3A,GD32F150K6U6,GD32F470ZET6,GD32F305VCT6,GD25B64E,GD32F101RCT6,GD32F4,GD32F105R8T6,GD25B64C,GD32F405ZKT6,GD32F407IGH6,GD32F2,GD32F3,GD32F101VIT6,GD32F1,GD9AU4GXF3A,GD32F105ZDT6,GD32E503VET6,GD25LF255E,GD32F427ZET6,GD30WS8662DY,GD25WD80C,GD32F407RKT6,GD32F470VIH6,GD32F407VKH6,GD25LH16E,GD32E230C8T6,GD32E230K4T6,GDQ2BFAA-WE,GD32E23X SERIES,GD32F303VGT6,GDQ2BFAA-WJ,GD32E232E4U7,GD25LX256E,GD32F205ZET6,GD32E5,GD25LD80C,GD32F407ZGT6,GD25LD80E,GD32E1,GD32F310F8P6,GD25LQ255E,GD32F330K8T6,GSL1686F,GD32W515TIQ6,GD32F103VBT6,GD32F107RET6,GD32F425ZKT6,GD32E505ZET6,GD9FS4GXF2A,GD32F427VKH6,GD32F450VKT6,GD32F330K6U6,GD32F101VFT6,GD25D80E,GD32F427RKT6,GDQ2BFAA-WQ,GD32E507RET6,GD25WD80E,GSL1691F,GD32F105ZGT6,GD25D80C,GD32F101T4U6,GD32F103C6T6,GD25LF16E,GD32F350R4T6,GD9AS4GXF3A,GD32F405ZGT6,GD32F207IKT6,GD32F427IGH6,GD32F307ZET6,GD32F103ZKT6,GD32F403VGT6,GD32F350G4U6,GD32F130K4U6,GD32E103VBT6,GD25LQ16E,GD25B128E,GD32F103VET6,GSL1680F,GD25LQ128E,GD25LQ16C,GD9FU2GXF3A,GD25LQ128D,GD32E230F8P6,GD32F403VET6,GD32F130C8T6,GD30WS8815EU,GD32F305ZGT6,GD32F150K8U6,GD32F407IEH6,GD32F101VGT6,GD32W515,GD32F130K4T6,GD30DR8413EU,GD32F103TBU6,GD25B127D,GD32F207ZCT6,GD32VF103C4T6,GD32F105ZFT6,GD25B512ME,GD5F4GQ6UE,GD32E503VCT6,GD32F470VGH6,GD32F427ZGT6,GD9FS4GXF3A,GD32E508RET6,GD32F303ZKT6,GD32E230C6T6,GD32F303VET6,GD32E232E6U7,GD32F330K6T6,GDP1A8LM-CB,GD32L233KBT6,GD32F205ZGT6,GDP1A8LM-CA,GD32F107RGT6,GD32F107ZCT6,GD32F103VDT6,GD9AU2GXF3A,GD32L23X,GD32F450VET6,GD32F450ZKT6,GD25Q127C,GD32F330C8T6,GD32F205RGT6,GD32F101R6T6,GD30LD3301FU,GD32E503,GD30LD,GD25WD05C,GD32V SERIES,GD32F303RET6,GD32F303VKT6,GD32E507,GD32F330K4U6,GD32E505,GD32F101RFT6,GD32F1 SERIES,GD32E508,GDP1BFLM-WB,GD32F105VCT6,GD25D20C,GDP1BFLM-WA,GD55LX02GE,GD25D20E,GSL6186,GD32E103C8T6,GD32VF103R4T6,GD32F207RCT6,GD32F350R6T6,GD32F305VGT6,GD32F130F8P6,GD25LB32E,GD25LF80E,GD5F4GQ6RE,GD32F307ZGT6,GD32F207IET6,GD32E505VET6,GD32F107ZDT6,GD32F403ZKT6,GD32F103VGT6,GD32F350G6U6,GD32VF103T8U6,GD25LQ80C,GD32F450IKH6,GD32F403VCT6,GD32F403ZIT6,GD32F405VKH6,GD9FU4G8F2AMGI,GD32F310F4P6,GD32F130C6T6,GD32F310G8U6,GD9FS2GXF3A,GD32F150G4U6,GD32E230K8U6,GD32F103T4U6,GD32C103,GD25LQ80E,GD5F1GQ5UE,GDQ2A8AA-CE,GD32F101RGT6,GDQ2A8AA-CJ,GD32F105VBT6,GD25B256E,GD32F405RKT6,GD32F470VKT6,GD32E503RCT6,GD32F101ZCT6,GD9FU2GXF2A,GD25Q128E,GD32F407VGH6,GD32F150R4T6,GD32F

选型指南 - 兆易创新 - 2022/1/26 PDF 英文下载

【应用】兆易创新Flash GD25Q64CWIGR成功用于GNSS定位模组

GNSS定位模组中有时需要外挂一个FLASH用于固件信息的备份和定位数据的保存，兆易创新推出的一款SPI接口的FLASH——GD25Q64CWIGR，尺寸小、控制形式简单，SPI接口仅需6个信号便可实现控制器和存储器之间的通信，减少了设计的复杂性，也缩小了电路板面积，降低了功耗和系统总成本。

应用方案发布时间 : 2022-05-07

【选型】Nor Flash选型时应该考虑哪些因素？

兆易创新2004年成立于美国硅谷，目前公司总部设在北京，专注于各类存储器和控制器的设计、研发和销售。GD是国内第一家存储器产品行业的上市企业，Falsh累计出货量超过100亿颗。我们在选择Nor Flash时要综合考虑各种因素，最终选出最合适的Nor Flash，本文将以兆易创新产品为例分享进行Nor Flash选型时经常要考虑的因素，方便大家快速选型。

器件选型发布时间 : 2019-11-27

GD25Q64C DATASHEET

型号- GD25Q64CZFG,GD25Q64CPJS,GD25Q64CZJG,GD25Q64CZJS,GD25Q64CPFS,GD25Q64CZFS,GD25Q64CQEG,GD25Q64CSIG,GD25Q64CQIG,GD25Q64CPIS,GD25Q64CZIG,GD25Q64CFES,GD25Q64CFJG,GD25Q64CPES,GD25Q64CZEG,GD25Q64CZES,GD25Q64CFFG,GD25Q64CZIS,GD25Q64CFFS,GD25Q64CPFG,GD25Q64CFJS,GD25Q64CPJG,GD25Q64CQJS,GD25Q64CYFG,GD25Q64CWFG,GD25Q64CYJG,GD25Q64CWJG,GD25Q64CSFG,GD25Q64CYJS,GD25Q64C,GD25Q64CWJS,GD25Q64CSFS,GD25Q64CQFS,GD25Q64CSJS,GD25Q64CFEG,GD25Q64CYFS,GD25Q64CFIG,GD25Q64CWFS,GD25Q64CPEG,GD25Q64CFIS,GD25Q64CPIG,GD25Q64CQIS,GD25Q64CYEG,GD25Q64CWEG,GD25Q64CYIG,GD25Q64CWIG,GD25Q64CSEG,GD25Q64CYIS,GD25Q64CWIS,GD25Q64CSES,GD25Q64CQES,GD25Q64CSIS,GD25Q64CYES,GD25Q64CWES,GD25Q64CQFG,GD25Q64CSJG,GDXXXXXXXXXXX,GD25Q64CQJG

数据手册 - 兆易创新 - Version No3.0 - 2018-8-1 PDF 英文下载

【应用】兆易创新的SPI FLASH用于GNSS定位模组上，功耗电流低至1μA

GNSS定位模组中需要存储一些定位解算信息和固件升级数据，如果主处理器内存有限就需要外挂FLASH扩展存储空间。兆易创新推出的SPI FLASH：GD25Q64C外形尺寸小、控制形式简单，可广泛应用于GNSS定位模组中。

应用方案发布时间 : 2022-04-07

兆易创新（Gigadevice）GD25Q64C 3.3V Uniform Sector Dual and Quad Serial Flash 数据手册

型号- GD25Q64CZFG,GD25Q64CPJS,GD25Q64CZJG,GD25Q64CZJS,GD25Q64CPFS,GD25Q64CZFS,GD25Q64CQEG,GD25Q64CSIG,GD25Q64CQIG,GD25Q64CPIS,GD25Q64CZIG,GD25Q64CFES,GD25Q64CFJG,GD25Q64CPES,GD25Q64CZEG,GD25Q64CZES,GD25Q64CFFG,GD25Q64CZIS,GD25Q64CFFS,GD25Q64CPFG,GD25Q64CFJS,GD25Q64CPJG,GD25Q64CYFG,GD25Q64CQJS,GD25Q64CWFG,GD25Q64CYJG,GD25Q64CSFG,GD25Q64CWJG,GD25Q64CYJS,GD25Q64C,GD25Q64CSFS,GD25Q64CWJS,GD25Q64CQFS,GD25Q64CSJS,GD25Q64CFEG,GD25Q64CYFS,GD25Q64CWFS,GD25Q64CFIG,GD25Q64CPEG,GD25Q64CFIS,GD25Q64CPIG,GD25Q64CYEG,GD25Q64CQIS,GD25Q64CWEG,GD25Q64CYIG,GD25Q64CSEG,GD25Q64CWIG,GD25Q64CYIS,GD25Q64CSES,GD25Q64CWIS,GD25Q64CQES,GD25Q64CSIS,GD25Q64CYES,GD25Q64CWES,GD25Q64CQFG,GD25Q64CSJG,GD25Q64CQJG

数据手册 - 兆易创新 - Version 3.0 - 2018-8-1 PDF 英文下载