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參數(shù)資料
| 型號(hào)： | W25Q32DWZPIP |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | PROM |
| 英文描述： | 256K X 16 SPI BUS SERIAL EEPROM, 7.5 ns, PDSO8 |
| 封裝： | 6 X 5 MM, GREEN, WSON-8 |
| 文件頁數(shù)： | 78/82頁 |
| 文件大?。?/td> | 1155K |
| 代理商： | W25Q32DWZPIP |
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W25Q32DW
- 8 -
7.1
Package Types
At the time this datasheet was published, not all package types had been finalized. Contact Winbond to
confirm availability of these packages before designing to this specification. W25Q32DW is offered in an
8-pin plastic 208-mil width SOIC (package code SS), a WSON 6x5-mm or 8X6-mm (package code ZP &
ZE) and a 16-pin plastic 300-mil width SOIC (package code SF) as shown in Figure 1a, 1b, 1c. Package
diagrams and dimensions are illustrated at the end of this datasheet.
7.2
Chip Select (/CS)
The SPI Chip Select (/CS) pin enables and disables device operation. When /CS is high, the device is
deselected and the Serial Data Output (DO, or IO0, IO1, IO2, IO3) pins are at high impedance. When
deselected, the devices power consumption will be at standby levels unless an internal erase, program or
write status register cycle is in progress. When /CS is brought low, the device will be selected, power
consumption will increase to active levels and instructions can be written to and data read from the
device. After power-up, /CS must transition from high to low before a new instruction will be accepted.
The /CS input must track the VCC supply level at power-up (see “Write Protection” and figure 43). If
needed a pull-up resister on /CS can be used to accomplish this.
7.3
Serial Data Input, Output and IOs (DI, DO and IO0, IO1, IO2, IO3)
The W25Q32DW supports standard SPI, Dual SPI, Quad SPI and QPI operation. Standard SPI
instructions use the unidirectional DI (input) pin to serially write instructions, addresses or data to the
device on the rising edge of the Serial Clock (CLK) input pin. Standard SPI also uses the unidirectional
DO (output) to read data or status from the device on the falling edge of CLK.
Dual/Quad SPI and QPI instructions use the bidirectional IO pins to serially write instructions, addresses
or data to the device on the rising edge of CLK and read data or status from the device on the falling
edge of CLK. Quad SPI and QPI instructions require the non-volatile Quad Enable bit (QE) in Status
Register-2 to be set. When QE=1, the /WP pin becomes IO2 and /HOLD pin becomes IO3.
7.4
Write Protect (/WP)
The Write Protect (/WP) pin can be used to prevent the Status Registers from being written. Used in
conjunction with the Status Register’s Block Protect (CMP, SEC, TB, BP2, BP1 and BP0) bits and Status
Register Protect (SRP) bits, a portion as small as a 4KB sector or the entire memory array can be
hardware protected. The /WP pin is active low. However, when the QE bit of Status Register-2 is set for
Quad I/O, the /WP pin function is not available since this pin is used for IO2. See figure 1a, 1b and 1c for
the pin configuration of Quad I/O operation.
7.5
HOLD (/HOLD)
The /HOLD pin allows the device to be paused while it is actively selected. When /HOLD is brought low,
while /CS is low, the DO pin will be at high impedance and signals on the DI and CLK pins will be ignored
(don’t care). When /HOLD is brought high, device operation can resume. The /HOLD function can be
useful when multiple devices are sharing the same SPI signals. The /HOLD pin is active low. When the
QE bit of Status Register-2 is set for Quad I/O, the /HOLD pin function is not available since this pin is
used for IO3. See figure 1a, 1b and 1c for the pin configuration of Quad I/O operation.
7.6
Serial Clock (CLK)
The SPI Serial Clock Input (CLK) pin provides the timing for serial input and output operations. ("See SPI
Operations")
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| W25Q32FVSSIQ | 制造商:Winbond Electronics Corp 功能描述: |
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