GS8161Z36BGD-250 GSI TECHNOLOGY, GS8161Z36BGD-250 Datasheet - Page 26

• Manufacturer Part Number: GS8161Z36BGD-250
• Manufacturer: GSI TECHNOLOGY

Specifications of GS8161Z36BGD-250

• Density: 18Mb
• Access Time (max): 5.5ns
• Sync/async: Synchronous
• Architecture: SDR
• Clock Freq (max): 181MHz
• Operating Supply Voltage (typ): 2.5/3.3V
• Address Bus: 19b
• Package Type: FBGA
• Operating Temp Range: 0C to 70C
• Number Of Ports: 4
• Supply Current: 235mA
• Operating Supply Voltage (min): 2.3/3V
• Operating Supply Voltage (max): 2.7/3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 165
• Word Size: 36b
• Number Of Words: 512K
• Lead Free Status / Rohs Status: Compliant

JTAG Port Operation
Overview
The JTAG Port on this RAM operates in a manner that is compliant with IEEE Standard 1149.1-1990, a serial boundary scan
interface standard (commonly referred to as JTAG). The JTAG Port input interface levels scale with V
drivers are powered by V
Disabling the JTAG Port
It is possible to use this device without utilizing the JTAG port. The port is reset at power-up and will remain inactive unless
clocked. TCK, TDI, and TMS are designed with internal pull-up circuits.To assure normal operation of the RAM with the JTAG
Port unused, TCK, TDI, and TMS may be left floating or tied to either V
Rev: 1.05a 10/2009
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
A0–An
CKE
ADV
DQ
CK
Bn
E*
W
G
tS
tS
tS
tS
tS
tS
A
*Note: E = High(False) if E1 = 1 or E2 = 0 or E3 = 1
tH
tH
tH
tH
tH
tH
Write A
DDQ
.
tS
D(A)
B
Write B
tH
D(B)
Flow Through Mode Timing (NBT)
Write B+1
tKH
tKH
tKL
tKL
D(B+1)
C
26/38
Read C
tLZ
tKQ
GS8161Z18B(T/D)/GS8161Z32B(D)/GS8161Z36B(T/D)
tKC
tKC
Q(C)
Cont
tOHZ
DD
or V
D
Read D
SS
. TDO should be left unconnected.
tOLZ
tOE
E
Q(D)
Write E
tHZ
tKQX
F
D(E)
Read F
DD
tLZ
tKQ
. The JTAG output
© 2004, GSI Technology
G
Q(F)
Write G
tKQX
D(G)