CY7C1327B-166AC Cypress Semiconductor Corp, CY7C1327B-166AC Datasheet - Page 7

• Manufacturer Part Number: CY7C1327B-166AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C1327B-166AC

• Density: 4Mb
• Access Time (max): 3.5ns
• Operating Supply Voltage (typ): 3.3V
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Supply Current: 420mA
• Operating Supply Voltage (min): 3.14V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 18b
• Lead Free Status / Rohs Status: Not Compliant

Write Cycle Description
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature
Ambient Temperature with
Power Applied
Supply Voltage on V
DC Voltage Applied to Outputs
in High Z State
DC Input Voltage
Notes:
Document #: 38-05140 Rev. **
4.
5.
6.
7.
8.
Read
Read
Write Byte 0 - DQ
Write Byte 1 - DQ
Write Bytes 1, 0
Write Byte 2 - DQ
Write Bytes 2, 0
Write Bytes 2, 1
Write Bytes 2, 1, 0
Write Byte 3 - DQ
Write Bytes 3, 0
Write Bytes 3, 1
Write Bytes 3, 1, 0
Write Bytes 3, 2
Write Bytes 3, 2, 0
Write Bytes 3, 2, 1
Write All Bytes
Write All Bytes
X = “Don't Care,” 1 = Logic HIGH, 0 = Logic LOW.
The SRAM always initiates a read cycle when ADSP asserted, regardless of the state of GW, BWE, or BW
after the ADSP or with the assertion of ADSC. As a result, OE must be driven HIGH prior to the start of the write cycle to allow the outputs to three-state. OE is
a don't care for the remainder of the write cycle.
OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle DQ
inactive or when the device is deselected, and DQ
Minimum voltage equals 2.0V for pulse durations of less than 20 ns.
T
A
is the case temperature.
[7]
[7]
[23:16]
[31:24]
Function
[7:0]
[15:8]
DD
Relative to GND
[4, 5, 6]
0.5V to V
0.5V to V
[15:0]
65°C to +150°C
55°C to +125°C
0.5V to +4.6V
;DP
[1:0]
DD
DD
GW
= data when OE is active.
+ 0.5V
+ 0.5V
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
BWE
Current into Outputs (LOW) ........................................ 20 mA
Static Discharge Voltage .......................................... >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current.................................................... >200 mA
Operating Range
Com’l
Industrial –40°C to +85°C
X
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Range
Temperature
BW
0°C to +70°C
X
X
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
Ambient
3
[1:0]
. Writes may occur only on subsequent clocks
BW
[8]
X
X
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
2
5%/+10%
3.3V
[15:0]
V
DD
CY7C1327B
;DP
BW
X
X
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
[1:0]
1
= High-Z when OE is
3.3V +10%
2.5V 5%
Page 7 of 17
V
DDQ
BW
X
X
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0