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CY7C1319CV18-200BZC Datasheet(PDF) 7 Page - Cypress Semiconductor

Part # CY7C1319CV18-200BZC
Description  18-Mbit DDR-II SRAM 4-Word Burst Architecture
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C1319CV18-200BZC Datasheet(HTML) 7 Page - Cypress Semiconductor

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CY7C1317CV18, CY7C1917CV18
CY7C1319CV18, CY7C1321CV18
Document Number: 001-07161 Rev. *B
Page 7 of 31
CQ
Output Clock CQ Referenced with Respect to C. This is a free running clock and is synchronized to the input clock
for output data (C) of the DDR-II. In single clock mode, CQ is generated with respect to K. The timing for
the echo clocks is shown in Switching Characteristics on page 24.
CQ
Output Clock CQ Referenced with Respect to C. This is a free running clock and is synchronized to the input clock
for output data (C) of the DDR-II. In single clock mode, CQ is generated with respect to K. The timing for
the echo clocks is shown in Switching Characteristics on page 24.
ZQ
Input
Output Impedance Matching Input. This input is used to tune the device outputs to the system data bus
impedance. CQ, CQ, and Q[x:0] output impedance are set to 0.2 x RQ, where RQ is a resistor connected
between ZQ and ground. Alternatively, this pin can be connected directly to VDDQ, which enables the
minimum impedance mode. This pin cannot be connected directly to GND or left unconnected.
DOFF
Input
DLL Turn Off
− Active LOW. Connecting this pin to ground turns off the DLL inside the device. The timing
in the DLL turned off operation is different from that listed in this data sheet. For normal operation, this
pin can be connected to a pull up through a 10 Kohm or less pull up resistor. The device behaves in DDR-I
mode when the DLL is turned off. In this mode, the device can be operated at a frequency of up to 167
MHz with DDR-I timing.
TDO
Output
TDO for JTAG.
TCK
Input
TCK Pin for JTAG.
TDI
Input
TDI Pin for JTAG.
TMS
Input
TMS Pin for JTAG.
NC
N/A
Not Connected to the Die. Can be tied to any voltage level.
NC/36M
N/A
Not Connected to the Die. Can be tied to any voltage level.
NC/72M
N/A
Not Connected to the Die. Can be tied to any voltage level.
NC/144M
N/A
Not Connected to the Die. Can be tied to any voltage level.
NC/288M
N/A
Not Connected to the Die. Can be tied to any voltage level.
VREF
Input-
Reference
Reference Voltage Input. Static input used to set the reference level for HSTL inputs, outputs, and AC
measurement points.
VDD
Power Supply Power Supply Inputs to the Core of the Device.
VSS
Ground
Ground for the Device.
VDDQ
Power Supply Power Supply Inputs for the Outputs of the Device.
Pin Definitions (continued)
Pin Name
IO
Pin Description
[+] Feedback


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