參數(shù)資料
型號(hào)： TH50VSF3582AASB
廠商： Toshiba Corporation
英文描述： TOSHIBA MULTI-CHIP INTEGRATED CIRCUIT SILICON GATE CMOS
中文描述： 東芝多芯片集成電路硅柵CMOS
文件頁(yè)數(shù)： 20/50頁(yè)
文件大小： 548K
代理商： TH50VSF3582AASB
TH50VSF3582/3583AASB
2001-06-08 20/50
ID Read Mode
ID Read mode is used to read the device maker code and device code. The mode is useful for EPROM
programmers to automatically identify the device type.
In this method, simultaneous operation can be performed. Inputting an ID Read command sets the specified
bank to ID Read mode. Banks are specified by inputting the bank address (BK) in the third bus write cycle of
the command cycle. To read an ID code, the bank address as well as the ID read address must be specified.
From address BK
+
00 the maker code is output; from address BK
+
01 the device code is output. From other
banks, data are output from the memory cells. Inputting a Reset command releases ID Read mode and returns
the device to Read mode.
Access time in ID Read mode is the same as that in Read mode. For the codes, see the ID Code Table.
Standby Mode
There are two methods of entering Standby mode.
(1) Control using CEF and RESET
When the device is in Read mode, input V
DD
±
0.3 V to CEF and RESET . The device enters Standby
mode and the current becomes standby current (I
CCS1
). However, if the device is in simultaneous operation,
the device does not enter Standby mode but causes the operating current to flow.
(2) Control using only RESET
When the device is in Read mode, input V
SS
±
0.3 V to RESET . The device enters Standby mode and the
current becomes standby current (I
CCS1
). Even if the device is in simultaneous operation, this method can
terminate the current operation and set the device to Standby mode. This is a hardware reset, described
later.
In standby mode, DQ is put in high-impedance state.
Auto Sleep Mode
Function which suppresses power dissipation during read. When address input does not change for 150 ns or
longer, the device automatically enters Sleep mode and the current becomes standby current (I
CCS1
). However,
if the device is in simultaneous operation, the device does not enter Standby mode but causes the operating
current to flow. Because the output data are latched, data are output in Sleep mode. When the address is
changed, Sleep mode is automatically released, outputting data from the changed address.
Output Disable Mode
Inputting V
IH
to OE disables output from the device, setting DQ to high-impedance.
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