GS8662Q07/10/19/37BD-357/333/300/250/200
Pin Description Table
Symbol
Description
Synchronous Address Inputs
Synchronous Read
Type
Input
Input
Input
Input
Comments
—
SA
R
W
Active Low
Active Low
Active Low
Synchronous Write
BW0–BW3
Synchronous Byte Writes
Active Low
(x8 only)
NW0–NW1
Synchronous Nybble Writes
Input
K
Input Clock
Input Clock
Input
Input
Active High
K
Active Low
TMS
TDI
TCK
TDO
VREF
Test Mode Select
Input
—
Test Data Input
Input
—
Test Clock Input
Input
—
Test Data Output
Output
Input
—
HSTL Input Reference Voltage
Output Impedance Matching Input
Synchronous Data Outputs
Synchronous Data Inputs
Disable DLL when low
Output Echo Clock
—
ZQ
Qn
Input
—
Output
Input
—
Dn
—
Active Low
—
Input
Doff
CQ
CQ
VDD
Output
Output
Supply
Output Echo Clock
—
Power Supply
1.8 V Nominal
VDDQ
VSS
Isolated Output Buffer Supply
Supply
1.8 V or 1.5 V Nominal
Power Supply: Ground
Q Valid Output
Supply
Output
Input
—
—
QVLD
ODT
—
Active High
—
On-Die Termination
No Connect
NC
Notes:
1. NC = Not Connected to die or any other pin
2. When ZQ pin is directly connected to V , output impedance is set to minimum value and it cannot be connected to ground or left
DDQ
unconnected.
3. K and K cannot be set to V
voltage.
REF
Rev: 1.02c 8/2017
6/28
© 2011, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.