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参数资料
| 型号： | E28F320J5-120 |
| 厂商： | INTEL CORP |
| 元件分类： | PROM |
| 英文描述： | StrataFlash MEMORY TECHNOLOGY 32 AND 64 MBIT |
| 中文描述： | 2M X 16 FLASH 5V PROM, 150 ns, PDSO56 |
| 封装： | 14 X 20 MM, TSOP-56 |
| 文件页数： | 5/51页 |
| 文件大小： | 651K |
| 代理商： | E28F320J5-120 |
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28F320J5 and 28F640J5
Datasheet
13
3.1
Read
Information can be read from any block, query, identifier codes, or status register independent of
the VPEN voltage. RP# can be at either VIH or VHH.
Upon initial device power-up or after exit from reset/power-down mode, the device automatically
resets to read array mode. Otherwise, write the appropriate read mode command (Read Array, Read
Query, Read Identifier Codes, or Read Status Register) to the CUI. Six control pins dictate the data
flow in and out of the component: CE0,CE1,CE2, OE#, WE#, and RP#. The device must be
OE# is the data output (DQ0–DQ15) control and, when active, drives the selected memory data
onto the I/O bus. WE# must be at VIH.
3.2
Output Disable
With OE# at a logic-high level (VIH), the device outputs are disabled. Output pins DQ0–DQ15 are
placed in a high-impedance state.
3.3
Standby
substantially reduces device power consumption. DQ0–DQ15 outputs are placed in a high-
impedance state independent of OE#. If deselected during block erase, program, or lock-bit
configuration, the WSM continues functioning, and consuming active power until the operation
completes.
3.4
Reset/Power-Down
RP# at VIL initiates the reset/power-down mode.
In read modes, RP#-low deselects the memory, places output drivers in a high-impedance state, and
turns off numerous internal circuits. RP# must be held low for a minimum of tPLPH. Time tPHQV is
required after return from reset mode until initial memory access outputs are valid. After this wake-
up interval, normal operation is restored. The CUI is reset to read array mode and status register is
set to 80H.
During block erase, program, or lock-bit configuration modes, RP#-low will abort the operation. In
default mode, STS transitions low and remains low for a maximum time of tPLPH +tPHRH until the
reset operation is complete. Memory contents being altered are no longer valid; the data may be
partially corrupted after a program or partially altered after an erase or lock-bit configuration. Time
tPHWL is required after RP# goes to logic-high (VIH) before another command can be written.
As with any automated device, it is important to assert RP# during system reset. When the system
comes out of reset, it expects to read from the flash memory. Automated flash memories provide
status information when accessed during block erase, program, or lock-bit configuration modes. If
a CPU reset occurs with no flash memory reset, proper initialization may not occur because the
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