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16 Mbit / 32 Mbit Multi-Purpose Flash Plus
SST39VF1601 / SST39VF3201
A Microchip Technology Company
SST39VF1602 / SST39VF3202
Not Recommended for New Designs
Data# Polling (DQ 7 )
When the SST39VF160x/320x are in the internal Program operation, any attempt to read DQ 7 will pro-
duce the complement of the true data. Once the Program operation is completed, DQ 7 will produce
true data. Note that even though DQ 7 may have valid data immediately following the completion of an internal
Write operation, the remaining data outputs may still be invalid: valid data on the entire data bus will appear in
subsequent successive Read cycles after an interval of 1 μs. During internal Erase operation, any attempt
to read DQ 7 will produce a ‘0’. Once the internal Erase operation is completed, DQ 7 will produce a ‘1’.
The Data# Polling is valid after the rising edge of fourth WE# (or CE#) pulse for Program operation. For
Sector-, Block- or Chip-Erase, the Data# Polling is valid after the rising edge of sixth WE# (or CE#)
pulse. See Figure 7 for Data# Polling timing diagram and Figure 21 for a flowchart.
Toggle Bits (DQ6 and DQ2)
During the internal Program or Erase operation, any consecutive attempts to read DQ 6 will produce
alternating “1”s and “0”s, i.e., toggling between 1 and 0. When the internal Program or Erase operation
is completed, the DQ 6 bit will stop toggling. The device is then ready for the next operation. For Sector-
, Block-, or Chip-Erase, the toggle bit (DQ 6 ) is valid after the rising edge of sixth WE# (or CE#) pulse.
DQ 6 will be set to “1” if a Read operation is attempted on an Erase-Suspended Sector/Block. If Pro-
gram operation is initiated in a sector/block not selected in Erase-Suspend mode, DQ 6 will toggle.
An additional Toggle Bit is available on DQ 2 , which can be used in conjunction with DQ 6 to check
whether a particular sector is being actively erased or erase-suspended. Table 2 shows detailed status
bits information. The Toggle Bit (DQ 2 ) is valid after the rising edge of the last WE# (or CE#) pulse of
Write operation. See Figure 8 for Toggle Bit timing diagram and Figure 21 for a flowchart.
Table 2: Write Operation Status
Status
DQ 7
DQ 6
DQ 2
Normal Operation
Erase-Suspend Mode
Standard Program
Standard Erase
Read from Erase-Suspended Sector/Block
Read from Non- Erase-Suspended Sector/Block
Program
DQ 7 #
0
1
Data
DQ 7 #
Toggle
Toggle
1
Data
Toggle
No Toggle
Toggle
Toggle
Data
N/A
T2.0 25028
Note: DQ 7 and DQ 2 require a valid address when reading status information.
Data Protection
The SST39VF160x/320x provide both hardware and software features to protect nonvolatile data from
inadvertent writes.
Hardware Data Protection
Noise/Glitch Protection: A WE# or CE# pulse of less than 5 ns will not initiate a write cycle.
V DD Power Up/Down Detection: The Write operation is inhibited when V DD is less than 1.5V.
Write Inhibit Mode: Forcing OE# low, CE# high, or WE# high will inhibit the Write operation. This pre-
vents inadvertent writes during power-up or power-down.
?2011 Silicon Storage Technology, Inc.
8
DS25028A
08/11
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相关代理商/技术参数
SST39VF3201704IEKE 制造商:Microchip Technology Inc 功能描述:
SST39VF3201-70-4I-EKE 功能描述:闪存 2M X 16 70ns 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
SST39VF3201-70-4I-EKE-T 功能描述:闪存 2.7 to 3.6V 32Mbit Multi-Purpose 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
SST39VF3201B-70-4C-B3KE 功能描述:闪存 32M (2Mx16) 70ns 2.7-3.6V Commercial 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
SST39VF3201B704CEKE 制造商:Microchip Technology Inc 功能描述:
SST39VF3201B-70-4C-EKE 功能描述:闪存 32M (2Mx16) 70ns 2.7-3.6V Commercial 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
SST39VF3201B-70-4I-B3KE 功能描述:闪存 2.7 to 3.6V 32Mbit Multi-Purpose 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
SST39VF3201B-70-4I-B3KE-T 功能描述:闪存 2.7V to 3.6V 32Mbit Multi-Prps Fl 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