29LV160-120 데이터 시트보기 (PDF) - Alliance Semiconductor
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29LV160-120 Datasheet PDF : 29 Pages
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Mode
CE
OE
WE
A0
A1
A6
ID read MFR code
L
L
H
L
L
L
ID read device code
L
L
H
H
L
L
Read
L
L
H
A0
A1
A6
Standby
H
X
X
X
X
X
Output disable
L
H
H
X
X
X
Write
L
H
L
A0
A1
A6
Enable sector protect
L
VID Pulse/L
L
H
L
Sector unprotect
L
VID Pulse/L
L
H
H
Temporary sector
unprotect
X
X
X
X
X
X
Verify sector protect†
L
L
H
L
H
L
Verify sector unprotect†
L
L
H
L
H
H
Hardware Reset
X
X
X
X
X
X
L = Low (<VIL) = logic 0; H = High (>VIH) = logic 1; VID = 10.0 ± 1.0V; X = don’t care.
In ×16 mode, BYTE = VIH. In ×8 mode, BYTE = VIL with DQ8-DQ14 in high Z and DQ15 = A-1.
†Verification of sector protect/unprotect during A9 = VID.
A9 RESET DQ
VID
H Code
VID
H Code
A9
H DOUT
X
H High Z
X
H High Z
A9
H DIN
VID
HX
VID
HX
X
VID X
VID
H Code
VID
H Code
X
L High Z
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Item
Description
ID MFR code,
device code
Read mode
Standby
Selected by A9 = VID(9.5V–10.5V), CE = OE = A1 = A6 = L, enabling outputs.
When A0 is low (VIL) the output data = 52h, a unique Mfr. code for Alliance Semiconductor Flash products.
When A0 is high (VIH), DOUT represents the device code for the AS29LV160.
Selected with CE = OE = L, WE = H. Data is valid in tACC time after addresses are stable, tCE after CE is low
and tOE after OE is low.
Selected with CE = H. Part is powered down, and ICC reduced to <1.0 µA when CE = VCC ± 0.3V = RESET. If
activated during an automated on-chip algorithm, the device completes the operation before entering
standby.
Output disable Part remains powered up; but outputs tri-stated with OE pulled high.
Write
Selected with CE = WE = L, OE = H. Accomplish all Flash erasure and programming through the command
register. Contents of command register serve as inputs to the internal state machine. Address latching occurs
on the falling edge of WE or CE, whichever occurs later. Data latching occurs on the rising edge WE or CE,
whichever occurs first. Filters on WE prevent spurious noise events from appearing as write commands.
Enable
sector protect
Hardware protection circuitry implemented with external programming equipment causes the device to
disable program and erase operations for specified sectors. For in-system sector protection, refer to Sector
protect algorithm on page 15.
Disables sector protection for all sectors using external programming equipment. All sectors must be
Sector unprotect protected prior to sector unprotection. For in-system sector unprotection, refer to Sector unprotect
algorithm on page 15.
8/30/01; V.0.9.5
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