Datasheet

CY7C1318JV18
CY7C1320JV18
Document Number: 001-15271 Rev. *E Page 5 of 24
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 is 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 is 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.
V
REF
Input-
Reference
Reference Voltage Input. Static input used to set the reference level for HSTL inputs, outputs, and AC
measurement points.
V
DD
Power Supply Power Supply Inputs to the Core of the Device.
V
SS
Ground Ground for the Device.
V
DDQ
Power Supply Power Supply Inputs for the Outputs of the Device.
Pin Definitions (continued)
Pin Name IO Pin Description
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