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参数资料
| 型号： | SST25VF020B-80-4I-SAE |
| 厂商： | Microchip Technology |
| 文件页数： | 8/35页 |
| 文件大小： | 0K |
| 描述： | IC FLASH SER 2MB 80MHZ SPI 8SOIC |
| 特色产品： | SST Serial and Parallel Flash Memory |
| 标准包装： | 100 |
| 系列： | SST25 |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | FLASH |
| 存储容量： | 2M (256K x 8) |
| 速度： | 80MHz |
| 接口： | SPI 串行 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
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2 Mbit SPI Serial Flash
A Microchip Technology Company
SST25VF020B
Data Sheet
Busy
The Busy bit determines whether there is an internal Erase or Program operation in progress. A “1” for
the Busy bit indicates the device is busy with an operation in progress. A “0” indicates the device is
ready for the next valid operation.
Write Enable Latch (WEL)
The Write-Enable-Latch bit indicates the status of the internal memory Write Enable Latch. If the
Write-Enable-Latch bit is set to “1”, it indicates the device is Write enabled. If the bit is set to “0” (reset),
it indicates the device is not Write enabled and does not accept any memory Write (Program/Erase)
commands. The Write-Enable-Latch bit is automatically reset under the following conditions:
?
?
?
?
?
?
?
?
Power-up
Write-Disable (WRDI) instruction completion
Byte-Program instruction completion
Auto Address Increment (AAI) programming is completed or reached its highest unpro-
tected memory address
Sector-Erase instruction completion
Block-Erase instruction completion
Chip-Erase instruction completion
Write-Status-Register instructions
Auto Address Increment (AAI)
The Auto Address Increment Programming-Status bit provides status on whether the device is in AAI
programming mode or Byte-Program mode. The default at power up is Byte-Program mode.
Block Protection (BP1, BP0)
The Block-Protection (BP1, BP0) bits define the size of the memory area, as defined in Table 5, to be
software protected against any memory Write (Program or Erase) operation. The Write-Status-Regis-
ter (WRSR) instruction is used to program the BP1 and BP0 bits as long as WP# is high or the Block-
Protect-Lock (BPL) bit is 0. Chip-Erase can only be executed if Block-Protection bits are all 0. After
power-up, BP1 and BP0 are set to 1.
Block Protection Lock-Down (BPL)
WP# pin driven low (V IL ), enables the Block-Protection-Lock-Down (BPL) bit. When BPL is set to 1, it
prevents any further alteration of the BPL, BP1, and BP0 bits of the status register and BSP and TSP
of Status Register 1. When the WP# pin is driven high (VIH), the BPL bit has no effect and its value is
“Don’t Care”. After power-up, the BPL bit is reset to 0.
Table 5: Software Status Register Block Protection FOR SST25VF020B 1
Status Register Bit 2
Protected Memory Address
Protection Level
0
1 (1/4 Memory Array)
1 (1/2 Memory Array)
1 (Full Memory Array)
BP1
0
0
1
1
BP0
0
1
0
1
2 Mbit
None
030000H-03FFFFH
020000H-03FFFFH
000000H-03FFFFH
T5.0 25054
1. X = Don’t Care (RESERVED) default is “0
2. Default at power-up for BP1 and BP0 is ‘11’. (All Blocks Protected)
?2012 Silicon Storage Technology, Inc.
8
DS25054A
01/12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SST25VF020B-80-4I-SAE | 制造商:Microchip Technology Inc 功能描述:MEMORY FLASH 2M SPI 8SOIC |
| SST25VF020B-80-4I-SAE-T | 功能描述:闪存 2.7V to 3.6V 2Mbit SPI Serial 闪存 RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| SST25VF032B | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:32 Mbit SPI Serial Flash |
| SST25VF032B_10 | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:32 Mbit SPI Serial Flash |
| SST25VF032B_11 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:32 Mbit SPI Serial Flash |
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