GS882Z18AB GSI [GSI Technology], GS882Z18AB Datasheet

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GS882Z18AB

Manufacturer Part Number
GS882Z18AB
Description
9Mb Pipelined and Flow Through Synchronous NBT SRAM
Manufacturer
GSI [GSI Technology]
Datasheet
119 & 165-Bump BGA
Commercial Temp
Industrial Temp
Features
• NBT (No Bus Turn Around) functionality allows zero wait
• 2.5 V or 3.3 V +10%/–10% core power supply
• 2.5 V or 3.3 V I/O supply
• User-configurable Pipeline and Flow Through mode
• ZQ mode pin for user-selectable high/low output drive
• IEEE 1149.1 JTAG-compatible Boundary Scan
• On-chip parity encoding and error detection
• LBO pin for Linear or Interleave Burst mode
• Pin-compatible with 2M, 4M, and 8M devices
• Byte write operation (9-bit Bytes)
• 3 chip enable signals for easy depth expansion
• ZZ Pin for automatic power-down
• JEDEC-standard 119-bump BGA and 165-bump FPBGA
Functional Description
The GS882Z18/36A is a 9Mbit Synchronous Static SRAM.
GSI's NBT SRAMs, like ZBT, NtRAM, NoBL or other
pipelined read/double late write or flow through read/single
late write SRAMs, allow utilization of all available bus
bandwidth by eliminating the need to insert deselect cycles
when the device is switched from read to write cycles.
Rev: 1.04 11/2004
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Read-Write-Read bus utilization; fully pin-compatible with
both pipelined and flow through NtRAM™, NoBL™ and
ZBT™ SRAMs
packages
Through
Pipeline
3-1-1-1
2-1-1-1
3.3 V
2.5 V
Flow
3.3 V
2.5 V
9Mb Pipelined and Flow Through
Synchronous NBT SRAM
Curr
Curr
Curr
Curr
Curr
Curr
Curr
Curr
tCycle
tCycle
t
t
(x32/x36)
(x32/x36)
(x32/x36)
(x32/x36)
KQ
KQ
(x18)
(x18)
(x18)
(x18)
Parameter Synopsis
1/35
-250 -225 -200 -166 -150 -133 Unit
280
330
275
320
175
200
175
200
2.5
4.0
5.5
5.5
255
300
250
295
165
190
165
190
2.7
4.4
6.0
6.0
Because it is a synchronous device, address, data inputs, and
read/write control inputs are captured on the rising edge of the
input clock. Burst order control (LBO) must be tied to a power
rail for proper operation. Asynchronous inputs include the
Sleep mode enable (ZZ) and Output Enable. Output Enable can
be used to override the synchronous control of the output
drivers and turn the RAM's output drivers off at any time.
Write cycles are internally self-timed and initiated by the rising
edge of the clock input. This feature eliminates complex off-
chip write pulse generation required by asynchronous SRAMs
and simplifies input signal timing.
The GS882Z18/36A may be configured by the user to operate
in Pipeline or Flow Through mode. Operating as a pipelined
synchronous device, in addition to the rising-edge-triggered
registers that capture input signals, the device incorporates a
rising edge triggered output register. For read cycles, pipelined
SRAM output data is temporarily stored by the edge-triggered
output register during the access cycle and then released to the
output drivers at the next rising edge of clock.
The GS882Z18/36A is implemented with GSI's high
performance CMOS technology and is available in JEDEC-
standard 119-bump BGA and 165-bump FPBGA packages.
230
270
230
265
160
180
160
180
3.0
5.0
6.5
6.5
GS882Z18/36AB/D-250/225/200/166/150/133
200
230
195
225
150
170
150
170
3.4
6.0
7.0
7.0
185
215
180
210
145
165
145
165
3.8
6.7
7.5
7.5
165
190
165
185
135
150
135
150
4.0
7.5
8.5
8.5
mA
mA
mA
mA
mA
mA
mA
mA
ns
ns
ns
ns
© 2001, GSI Technology
250 MHz–133 MHz
2.5 V or 3.3 V V
2.5 V or 3.3 V I/O
DD

Related parts for GS882Z18AB

GS882Z18AB Summary of contents

Page 1

... For read cycles, pipelined SRAM output data is temporarily stored by the edge-triggered output register during the access cycle and then released to the output drivers at the next rising edge of clock. ...

Page 2

GS882Z36A Pad Out—119-Bump BGA—Top View (Package Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. ...

Page 3

GS882Z18A Pad Out—119-Bump BGA—Top View (Package Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. ...

Page 4

Bump BGA—x18 Commom I/O—Top View (Package DDQ D NC DQB V DDQ E NC DQB V DDQ F NC DQB V DDQ G ...

Page 5

Bump BGA—x36 Common I/O—Top View (Package DQC NC V DDQ D DQC DQC V DDQ E DQC DQC V DDQ F DQC DQC V DDQ G ...

Page 6

GS882Z18/36A BGA Pin Description Symbol Type I — CKE ...

Page 7

... A B cycle with no Byte Write inputs active is a no-op cycle. The pipelined NBT SRAM provides double late write functionality, matching the write command versus data pipeline length (2 cycles) to the read command versus data pipeline length (2 cycles). At the first rising edge of clock, Enable, Write, Byte Write(s), and Address are registered. The Data In associated with that address is required at the third rising edge of clock ...

Page 8

... Dummy Read and Write abort can be considered NOPs because the SRAM performs no operation. A Write abort occurs when the W pin is sampled low but no Byte Write pins are active so no write operation is performed can be wired low to minimize the number of control signals provided to the SRAM. Output drivers will automatically turn off during write cycles. 4. ...

Page 9

Pipelined and Flow Through Read Write Control State Diagram New Read R R Burst Read B Key Input Command Code ƒ Transition Current State (n) Next State (n+1) n Clock (CK) Command Current State Current State and Next State Definition ...

Page 10

Intermediate B W High Z (Data In) Key Input Command Code ƒ Transition Current State (n) Intermediate State (N+1) Clock (CK) Command Current State and Next State Definition for Rev: 1.04 11/2004 Specifications cited are subject to change without notice. ...

Page 11

B W High Z (Data In) Key Input Command Code ƒ Transition Current State (n) Clock (CK) Command Current State and Next State Definition for: Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see ...

Page 12

... SRAM to advance the internal address counter and use the counter generated address to read or write the SRAM. The starting address for the first cycle in a burst cycle series is loaded into the SRAM by driving the ADV pin low, into Load mode ...

Page 13

... During normal operation, ZZ must be pulled low, either by the user or by its internal pull down resistor. When ZZ is pulled high, the SRAM will enter a Power Sleep mode after 2 cycles. At this time, internal state of the SRAM is preserved. When ZZ returns to low, the SRAM operates normally after ZZ recovery time. ...

Page 14

Absolute Maximum Ratings (All voltages reference Symbol DDQ V I/O V Voltage on Other Input Pins IN I Input Current on Any Pin IN I Output Current on Any I/O Pin OUT P ...

Page 15

V Range Logic Levels DDQ3 Parameter V Input High Voltage DD V Input Low Voltage DD V I/O Input High Voltage DDQ V I/O Input Low Voltage DDQ Notes: 1. The part numbers of Industrial Temperature Range versions end the ...

Page 16

Undershoot Measurement and Timing 50% V – 2 50% tKC Capacitance 2 Parameter Input Capacitance Input/Output Capacitance Note: ...

Page 17

DC Electrical Characteristics Parameter Input Leakage Current (except mode pins) ZZ Input Current FT, ZQ Input Current Output Leakage Current Output High Voltage Output High Voltage Output Low Voltage Rev: 1.04 11/2004 Specifications cited are subject to change without notice. ...

Page 18

Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. GS882Z18/36AB/D-250/225/200/166/150/133 18/35 © 2001, GSI Technology ...

Page 19

AC Electrical Characteristics Parameter Symbol Clock Cycle Time Clock to Output Valid Clock to Output Invalid Pipeline Clock to Output in Low-Z Setup time Hold time Clock Cycle Time Clock to Output Valid Clock to Output Invalid Flow Through Clock ...

Page 20

Write A Read CKE ADV Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation ...

Page 21

Write A Write CKE ADV A0– D(A) G *Note High(False ...

Page 22

JTAG Port Registers JTAG Pin Descriptions Pin Pin Name I/O Clocks all TAP events. All inputs are captured on the rising edge of TCK and all outputs propagate TCK Test Clock In from the falling edge of TCK. The TMS ...

Page 23

TDI TMS TCK Identification (ID) Register The ID Register is a 32-bit register that is loaded with a device and vendor specific 32-bit code when the controller is put in Capture-DR state with the IDCODE command loaded ...

Page 24

When the TAP controller is placed in Capture-IR state the two least significant bits of the instruction register are loaded with 01. When the controller is moved to the Shift-IR state the Instruction Register is placed between TDI and TDO. ...

Page 25

I/O ring contents into the Boundary Scan Register. Moving the controller to Shift-DR state then places the boundary scan register between the TDI and TDO pins. EXTEST EXTEST is an IEEE 1149.1 mandatory public instruction. It ...

Page 26

JTAG Port AC Test Conditions Parameter Input high level Input low level Input slew rate Input reference level Output reference level Notes: 1. Include scope and jig capacitance. 2. Test conditions as shown unless otherwise noted. JTAG TAP Instruction Set ...

Page 27

... TCK TDI TMS TDO Parallel SRAM input JTAG Port AC Electrical Characteristics Parameter Symbol TCK Cycle Time tTKC TCK Low to TDO Valid tTKQ TCK High Pulse Width tTKH TCK Low Pulse Width tTKL TDI & TMS Set Up Time tTS TDI & TMS Hold Time ...

Page 28

Package Dimensions—119-Bump FPBGA (Package B, Variation 2 A1 TOP VIEW SEATING PLANE C Rev: 1.04 11/2004 ...

Page 29

Package Dimensions—165-Bump FPBGA (Package D; Variation 1) A1 TOP SEATING C Rev: 1.04 11/2004 Specifications ...

Page 30

... GS882Z36AB-133 NBT Pipeline/Flow Through 512K x 18 GS882Z18AB-250I NBT Pipeline/Flow Through 512K x 18 GS882Z18AB-225I NBT Pipeline/Flow Through 512K x 18 GS882Z18AB-200I NBT Pipeline/Flow Through 512K x 18 GS882Z18AB-166I NBT Pipeline/Flow Through 512K x 18 GS882Z18AB-150I NBT Pipeline/Flow Through 512K x 18 GS882Z18AB-133I NBT Pipeline/Flow Through ...

Page 31

... Ordering Information—GSI NBT Synchronous SRAM 1 Org Part Number 256K x 36 GS882Z36AD-250 NBT Pipeline/Flow Through 256K x 36 GS882Z36AD-225 NBT Pipeline/Flow Through 256K x 36 GS882Z36AD-200 NBT Pipeline/Flow Through 256K x 36 GS882Z36AD-166 NBT Pipeline/Flow Through 256K x 36 GS882Z36AD-150 NBT Pipeline/Flow Through 256K x 36 ...

Page 32

... Sync SRAM Datasheet Revision History Types of Changes DS/DateRev. Code: Old; Format or Content New 882Z18A_r1 882Z18A_r1_01 882Z18A_r1_01; 882Z18A_r1_02 882Z18A_r1_02; 882Z18A_r1_03 882Z18A_r1_03; 882Z18A_r1_04 Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. GS882Z18/36AB/D-250/225/200/166/150/133 Page;Revisions;Reason • Creation of new datasheet • ...

Page 33

Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. GS882Z18/36AB/D-250/225/200/166/150/133 33/35 © 2001, GSI Technology ...

Page 34

Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. GS882Z18/36AB/D-250/225/200/166/150/133 34/35 © 2001, GSI Technology ...

Page 35

Rev: 1.04 11/2004 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. GS882Z18/36AB/D-250/225/200/166/150/133 35/35 © 2001, GSI Technology ...

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