參數(shù)資料
型號： TH50VSF2581AASB
廠商： Toshiba Corporation
元件分類： 圓形連接器
英文描述： Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:7; Connector Shell Size:18; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight
中文描述： SRAM和閃存混合多芯片封裝
文件頁數(shù)： 21/50頁
文件大?。?/td> 546K
代理商： TH50VSF2581AASB
TH50VSF2580/2581AASB
2001-10-26 21/50
Command Write
The TH50VSF2580/2581AASB uses the standard JEDEC control commands for a single-power supply
E
2
PROM. A Command Write is executed by inputting the address and data into the Command Register. The
command is written by inputting a pulse to WE with CEF
=
V
IL
and OE
=
V
IH
( WE control). The
command can also be written by inputting a pulse to CEF with WE
=
V
IL
(CEFcontrol). The address is
latched on the falling edge of either WE or CEF. The data is latched on the rising edge of either WE or
CEF. DQ0~DQ7 are valid for data input and DQ8~DQ15 are ignored.
To abort input of the command sequence use the Reset command. The device will reset the Command Register
and enter Read Mode. If an undefined command is input, the Command Register will be reset and the device
will enter Read Mode.
Software Reset
Apply a software reset by inputting a Read/Reset command. A software reset returns the device from ID Read
Mode or CFI Mode to Read Mode, releases the lock state if automatic operation has ended abnormally, and
clears the Command Register.
Hardware Reset
A hardware reset initializes the device and sets it to Read Mode. When a pulse is input to RESET for t
RP
,
the device abandons the operation which is in progress and enters Read Mode after t
READY
. Note that if a
hardware reset is applied during data overwriting, such as a Write or Erase operation, data at the address or
block being written to at the time of the reset will become undefined.
After a hardware reset the device enters Read Mode if RESET
=
V
IH
or Standby Mode if RESET
=
V
IL
.
The DQ pins are High-Impedance when RESET
=
V
IL
. After the device has entered Read Mode, Read
operations and input of any command are allowed.
Comparison between Software Reset and Hardware Reset
ACTION
SOFTWARE RESET
HARDWARE RESET
Releases ID Read
Mode or CFI Mode.
True
True
Clears the Command Register.
True
True
Releases the lock state if automatic operation has ended abnormally.
True
True
Stops any automatic operation which is in progress.
False
True
Stops any operation other than the above and returns
the device to
Read Mode.
False
True
BYTE
CIOF is used select Word Mode (16 bits) or Byte Mode (8 bits) for the TH50VSF2580/2581AASB. If V
IH
is
input to CIOF, the device will operate in Word Mode. Read data or write commands using DQ0~DQ15. When
V
IL
is input to CIOF, read data or write commands using DQ0~DQ7. A12F is used as the lowest address.
DQ8~DQ14 will become High-Impedance.
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