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参数资料
| 型号： | W19B320ATB7H |
| 厂商： | Winbond Electronics |
| 文件页数： | 9/53页 |
| 文件大小： | 0K |
| 描述： | IC FLASH 32MBIT 70NS 48TFBGA |
| 标准包装： | 210 |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | FLASH |
| 存储容量： | 32M（4M x 8，2M x 16） |
| 速度： | 70ns |
| 接口： | 并联 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -20°C ~ 85°C |
| 封装/外壳： | 48-TFBGA |
| 供应商设备封装： | 48-TFBGA（6x8） |
| 包装： | 托盘 |
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W19B320AT/B
6.1.7
#RESET: Hardware Reset Pin
The #RESET pin provides a hardware method to reset the device to reading array data. When the
#RESET pin is set to low for at least a period of t RP , the device will immediately terminate every
operation in progress, tri-states all output pins, and ignores all read/write commands for the duration
of the #RESET pulse. The device also resets the internal state machine to reading array data mode.
To ensure data integrity, the interrupted operation needs to be reinitiated when the device is ready to
accept another command sequence.
Current is reduced for the duration of the #RESET pulse. When #RESET is held at V SS ± 0.3V, the
device initiates the CMOS standby current (I CC4 ). If #RESET is held at V IL but not within V SS ± 0.3V,
the standby current will be greater.
The #RESET pin may be tied to the system-reset circuitry. Thus the system reset would also reset the
device, enabling the system to read the boot-up firmware from the device.
If #RESET is asserted during the program or erase operation, the RY/#BY pin will be at “0” (busy) until
the internal reset operation is complete. If #RESET is asserted when a program or erase operation is
not processing (RY/#BY pin is “1”), the reset operation is completed within a time of t READY (not during
Embedded Algorithms). After the #RESET pin returns to V IH , the system can read data t RH.
6.1.8
Output Disable Mode
When the #OE input is at V IH , output from the device is disabled. The output pins are set in the high
impedance state.
6.1.9
Autoselect Mode
The AUTOSELECT mode offers manufacturer and device identification, as well as sector protection
verification, through identifier codes output on DQ0-DQ7. This mode is primarily intended for
programming equipment to automatically match a device to be programmed with its corresponding
programming algorithm. However, the AUTOSELECT codes can also be accessed in-system through
the command register.
When using programming equipment, the AUTOSELECT mode requires V ID (8.5V to 12.5V) on
address pins A9. Address pins A6, A1, and A0 must be as shown in table. In addition, when verifying
sector protection, the sector address must appear on the appropriate highest order address bits.
When all necessary bits have been set as required, the programming equipment may then read the
corresponding identifier code on DQ0-DQ7.
6.1.10 Sector/Sector Block Protection and Unprotection
The hardware sector protection feature disables both program and erasure operations in any sectors.
The hardware sector Unprotection feature re-enables both program and erasure operations in
previously protected sectors. Sector Protection/Unprotection can be implemented through two
methods.
The primary method requires V ID on the #RESET pin, and can be implemented either in-system or through
programming equipment. This method uses standard microprocessor bus cycle timing.
The alternate method intended only for programming equipment requires V ID on address pin A9 and #OE. It
is possible to determine whether a sector is protected or unprotected. See the Application Note for detail
information.
Publication Release Date: December 27, 2005
-9-
Revision A4
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| W19B320ABT7H | IC FLASH 32MBIT 70NS 48TSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| W19B320ATT7H | 功能描述:IC FLASH 32MBIT 70NS 48TSOP RoHS:是 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:1,000 系列:- 格式 - 存储器:RAM 存储器类型:移动 SDRAM 存储容量:256M（8Mx32） 速度:133MHz 接口:并联 电源电压:1.7 V ~ 1.95 V 工作温度:-40°C ~ 85°C 封装/外壳:90-VFBGA 供应商设备封装:90-VFBGA（8x13） 包装:带卷 (TR) 其它名称:557-1327-2 |
| W19B320B | 制造商:WINBOND 制造商全称:Winbond 功能描述:32Mbit, 2.7~3.6-volt single bank CMOS flash memory |
| W19B320BB | 制造商:WINBOND 制造商全称:Winbond 功能描述:32Mbit, 2.7~3.6-volt single bank CMOS flash memory |
| W19B320BB-H | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.7~3.6-volt write (program and erase) operations |
| W19B320BB-M | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.7~3.6-volt write (program and erase) operations |
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