CY7C1318CV18, CY7C1320CV18

Document Number: 001-07160 Rev. *J

Page 7 of 29

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 K

 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

Test Data Out (TDO) for JTAG.

TCK

Input

Test Clock (TCK) Pin for JTAG.

TDI

Input

Test Data In (TDI) Pin for JTAG.

TMS

Input

Test Mode Select (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.

Input-

Reference

Reference Voltage Input. Static input used to set the reference level for HSTL inputs, outputs, and AC

measurement points.

Power Supply Power Supply Inputs to the Core of the Device.

Ground

Ground for the Device.

Power Supply Power Supply Inputs for the Outputs of the Device.

Pin Name

I/O

Pin Description

[+] Feedback