CY7C09359A-7AC Cypress Semiconductor Corp, CY7C09359A-7AC Datasheet - Page 2

• Manufacturer Part Number: CY7C09359A-7AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C09359A-7AC

• Density: 144Kb
• Access Time (max): 7.5ns
• Operating Supply Voltage (typ): 5V
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Supply Current: 420mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 18b
• Lead Free Status / Rohs Status: Not Compliant

Functional Description
The CY7C09349A and CY7C09359A are high-speed synchro-
nous CMOS 4K and 8K x 18 dual-port static RAMs. Two ports
are provided, permitting independent, simultaneous access
for reads and writes to any location in memory.
control, address, and data lines allow for minimal set-up and
hold times. In pipelined output mode, data is registered for
decreased cycle time. Clock to data valid t
lined). Flow-through mode can also be used to bypass the
pipelined output register to eliminate access latency. In flow-
through mode data will be available t
address is clocked into the device. Pipelined output or flow-
through mode is selected via the FT/Pipe pin.
Each port contains a burst counter on the input address regis-
ter. The internal write pulse width is independent of the LOW-
to-HIGH transition of the clock signal. The internal write pulse
is self-timed to allow the shortest possible cycle times.
Note:
Document #: 38-06048 Rev. **
3.
When simultaneously writing to the same location, final value cannot be determined.
CD1
CD2
= 15 ns after the
= 6.5 ns
[3]
Registers on
[1]
(pipe-
A HIGH on CE
down the internal circuitry to reduce the static power consump-
tion. The use of multiple Chip Enables allows easier banking
of multiple chips for depth expansion configurations. In the
pipelined mode, one cycle is required with CE
HIGH to reactivate the outputs.
Counter enable inputs are provided to stall the operation of the
address input and utilize the internal address generated by the
internal counter for fast interleaved memory applications. A
port’s burst counter is loaded with the port’s Address Strobe
(ADS). When the port’s Count Enable (CNTEN) is asserted,
the address counter will increment on each LOW-to-HIGH
transition of that port’s clock signal. This will read/write one
word from/into each successive address location until CNTEN
is deasserted. The counter can address the entire memory
array and will loop back to the start. Counter Reset (CNTRST)
is used to reset the burst counter.
All parts are available in 100-pin Thin Quad Plastic Flatpack
(TQFP) packages.
0
or LOW on CE
1
for one clock cycle will power
CY7C09349A
CY7C09359A
0
LOW and CE
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