CY7C1470V33-167AXC Cypress Semiconductor Corp, CY7C1470V33-167AXC Datasheet - Page 8

• Manufacturer Part Number: CY7C1470V33-167AXC
• Description: IC,SYNC SRAM,2MX36,CMOS,QFP,100PIN,PLASTIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C1470V33-167AXC

• Format - Memory: RAM
• Memory Type: SRAM - Synchronous
• Memory Size: 72M (2M x 36)
• Speed: 167MHz
• Interface: Parallel
• Voltage - Supply: 3.135 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 428-2166; CY7C1470V33-167AXC

Document Number: 38-05289 Rev. *M
A0
A1
A
BW
BW
BW
BW
BW
BW
BW
BW
WE
ADV/LD
CLK
CE
CE
CE
OE
CEN
DQ
DQP
MODE
TDO
TDI
Pin Definitions
Pin Name
1
2
3
S
a
e
b
c
d
f
g
h
X
Input-
synchronous
Input-
synchronous
Input-
synchronous
Input-
synchronous
Input-
clock
Input-
synchronous
Input-
synchronous
Input-
synchronous
Input-
asynchronous
Input-
synchronous
I/O-
synchronous
I/O-
synchronous
Input strap pin
JTAG serial
output
synchronous
JTAG serial input
Synchronous
I/O Type
Address inputs used to select one of the address locations. Sampled at the rising edge of
the CLK.
Byte write select inputs, active LOW. Qualified with WE to conduct writes to the SRAM.
Sampled on the rising edge of CLK. BW
BW
controls DQ
Write enable input, active LOW. Sampled on the rising edge of CLK if CEN is active LOW. This
signal must be asserted LOW to initiate a write sequence.
Advance/load input used to advance the on-chip address counter or load a new address.
When HIGH (and CEN is asserted LOW) the internal burst counter is advanced. When LOW, a
new address can be loaded into the device for an access. After being deselected, ADV/LD should
be driven LOW in order to load a new address.
Clock input. Used to capture all synchronous inputs to the device. CLK is qualified with CEN.
CLK is only recognized if CEN is active LOW.
Chip enable 1 input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with
CE
Chip enable 2 input, active HIGH. Sampled on the rising edge of CLK. Used in conjunction with
CE
Chip enable 3 input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with
CE
Output enable, active LOW. Combined with the synchronous logic block inside the device to
control the direction of the I/O pins. When LOW, the I/O pins are allowed to behave as outputs.
When deasserted HIGH, I/O pins are tristated, and act as input data pins. OE is masked during
the data portion of a write sequence, during the first clock when emerging from a deselected state
and when the device has been deselected.
Clock enable input, active LOW. When asserted LOW the clock signal is recognized by the
SRAM. When deasserted HIGH the clock signal is masked. Since deasserting CEN does not
deselect the device, CEN can be used to extend the previous cycle when required.
Bidirectional data I/O lines. As inputs, they feed into an on-chip data register that is triggered
by the rising edge of CLK. As outputs, they deliver the data contained in the memory location
specified by A
controlled by OE and the internal control logic. When OE is asserted LOW, the pins can behave
as outputs. When HIGH, DQ
cally tristated during the data portion of a write sequence, during the first clock when emerging
from a deselected state, and when the device is deselected, regardless of the state of OE.
Bidirectional data parity I/O lines. Functionally, these signals are identical to DQ
sequences, DQP
and DQP
is controlled by BW
Mode input. Selects the burst order of the device. Tied HIGH selects the interleaved burst order.
Pulled LOW selects the linear burst order. MODE should not change states during operation.
When left floating MODE will default HIGH, to an interleaved burst order.
Serial data-out to the JTAG circuit. Delivers data on the negative edge of TCK.
Serial data-in to the JTAG circuit. Sampled on the rising edge of TCK.
2
1
1
c
and CE
and CE
and CE
controls DQ
d
is controlled by BW
f
2
3
3
and DQP
to select/deselect the device.
to select/deselect the device.
to select/deselect the device.
[17:0]
a
c
and DQP
is controlled by BW
during the previous clock rise of the read cycle. The direction of the pins is
g
, DQP
f
, BW
h
g
c
is controlled by BW
a
, BW
controls DQ
–DQ
d
, DQP
d
d
controls DQ
are placed in a tristate condition. The outputs are automati-
a
e
, DQP
a
Pin Description
is controlled by BW
controls DQ
g
and DQP
b
is controlled by BW
d
h
and DQP
.
g
a
, BW
and DQP
d
h
e
, BW
, DQP
controls DQ
a
e
, BW
controls DQ
b
f
, DQP
is controlled by BW
b
controls DQ
h
c
and DQP
is controlled by BW
CY7C1470V33
CY7C1472V33
CY7C1474V33
e
and DQP
X
. During write
b
h
.
and DQP
f
, DQP
Page 8 of 33
e
, BW
b
g
c
,
,
f
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