CY7C0852V-133AC Cypress Semiconductor Corp, CY7C0852V-133AC Datasheet - Page 6

• Manufacturer Part Number: CY7C0852V-133AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C0852V-133AC

• Density: 4Mb
• Access Time (max): 4.4ns
• Sync/async: Synchronous
• Architecture: SDR
• Clock Freq (max): 133MHz
• Operating Supply Voltage (typ): 3.3V
• Address Bus: 17b
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 300mA
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.465V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 176
• Word Size: 36b
• Number Of Words: 128K
• Lead Free Status / Rohs Status: Not Compliant

Pin Definitions
Note
Document #: 38-06070 Rev. *H
A
ADS
CE0
CE1
CLK
CNTEN
CNTRST
CNT/MSK
DQ
OE
INTL
CNTINT
R/W
B
MRST
TMS
TDI
TCK
TDO
V
V
3. These pins are not available for CY7C0853AV device.
0L
0L
SS
DD
0L
L
–A
–B
Left Port
L
L
L
L
L
[3]
[3]
–DQ
[3]
17L
3L
L
L
[3]
L
[1]
[3]
35L
[3]
L
[3]
A
ADS
CE0
CE1
CLK
CNTEN
CNTRST
CNT/MSK
DQ
OE
INTR
CNTINT
R/W
B
0R
0R
Right Port
R
0R
–A
–B
R
R
R
R
R
[3]
[3]
–DQ
[3]
17R
3R
R
R
[3]
R
[3]
[1]
R
35R
[3]
[3]
Address Inputs.
Address Strobe Input. Used as an address qualifier. This signal should be asserted LOW for
the part using the externally supplied address on the address pins and for loading this address
into the burst address counter.
Active LOW Chip Enable Input.
Active HIGH Chip Enable Input.
Clock Signal. Maximum clock input rate is f
Counter Enable Input. Asserting this signal LOW increments the burst address counter of its
respective port on each rising edge of CLK. The increment is disabled if ADS or CNTRST are
asserted LOW.
Counter Reset Input. Asserting this signal LOW resets to zero the unmasked portion of the burst
address counter of its respective port. CNTRST is not disabled by asserting ADS or CNTEN.
Address Counter Mask Register Enable Input. Asserting this signal LOW enables access to
the mask register. When tied HIGH, the mask register is not accessible and the address counter
operations are enabled based on the status of the counter control signals.
Data Bus Input/Output.
Output Enable Input. This asynchronous signal must be asserted LOW to enable the DQ data
pins during Read operations.
Mailbox Interrupt Flag Output. The mailbox permits communications between ports. The upper
two memory locations can be used for message passing. INT
port writes to the mailbox location of the left port, and vice versa. An interrupt to a port is
deasserted HIGH when it reads the contents of its mailbox.
Counter Interrupt Output. This pin is asserted LOW when the unmasked portion of the counter
is incremented to all “1s.”
Read/Write Enable Input. Assert this pin LOW to write to, or HIGH to Read from the dual port
memory array.
Byte Select Inputs. Asserting these signals enables Read and Write operations to the corre-
sponding bytes of the memory array.
Master Reset Input. MRST is an asynchronous input signal and affects both ports. Asserting
MRST LOW performs all of the reset functions as described in the text. A MRST operation is
required at power up.
JTAG Test Mode Select Input. It controls the advance of JTAG TAP state machine. State
machine transitions occur on the rising edge of TCK.
JTAG Test Data Input. Data on the TDI input is shifted serially into selected registers.
JTAG Test Clock Input.
JTAG Test Data Output. TDO transitions occur on the falling edge of TCK. TDO is normally
three-stated except when captured data is shifted out of the JTAG TAP.
Ground Inputs.
Power Inputs.
Description
MAX
.
CY7C0850AV, CY7C0851AV
CY7C0852AV, CY7C0853AV
L
is asserted LOW when the right
Page 6 of 32
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