GS88236BB-200IV GSI [GSI Technology], GS88236BB-200IV Datasheet

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GS88236BB-200IV

Manufacturer Part Number
GS88236BB-200IV
Description
512K x 18, 256K x 36 9Mb SCD/DCD Sync Burst SRAMs
Manufacturer
GSI [GSI Technology]
Datasheet
119- and 165-Bump BGA
Commercial Temp
Industrial Temp
Features
• FT pin for user-configurable flow through or pipeline operation
• Single/Dual Cycle Deselect selectable
• IEEE 1149.1 JTAG-compatible Boundary Scan
• On-chip read parity checking; even or odd selectable
• ZQ mode pin for user-selectable high/low output drive
• 1.8 V or 2.5 V core power supply
• 1.8 V or 2.5 V I/O supply
• LBO pin for Linear or Interleaved Burst mode
• Internal input resistors on mode pins allow floating mode pins
• Default to SCD x18/x36 Interleaved Pipeline mode
• Byte Write (BW) and/or Global Write (GW) operation
• Internal self-timed write cycle
• Automatic power-down for portable applications
• JEDEC-standard 119- and 165-bump BGA packages
• RoHS-compliant packages available
Functional Description
Applications
The GS88218/36B(B/D)-xxxV is a 9,437,184-bit high
performance synchronous SRAM with a 2-bit burst address
counter. Although of a type originally developed for Level 2
Cache applications supporting high performance CPUs, the device
now finds application in synchronous SRAM applications, ranging
from DSP main store to networking chip set support.
Controls
Addresses, data I/Os, chip enable (E1), address burst control
inputs (ADSP, ADSC, ADV), and write control inputs (Bx, BW,
GW) are synchronous and are controlled by a positive-edge-
triggered clock input (CK). Output enable (G) and power down
control (ZZ) are asynchronous inputs. Burst cycles can be initiated
with either ADSP or ADSC inputs. In Burst mode, subsequent
burst addresses are generated internally and are controlled by
ADV. The burst address counter may be configured to count in
either linear or interleave order with the Linear Burst Order (LBO)
input. The Burst function need not be used. New addresses can be
loaded on every cycle with no
Flow Through/Pipeline Reads
The function of the Data Output register can be controlled by the
user via the FT mode . Holding the FT mode pin low places the
RAM in Flow Through mode, causing output data to bypass the
Rev: 1.03 6/2006
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
degradation of chip performance.
Flow Through
9Mb SCD/DCD Sync Burst SRAMs
Pipeline
3-1-1-1
2-1-1-1
512K x 18, 256K x 36
Curr (x32/x36)
Curr (x32/x36)
Curr (x18)
Curr (x18)
tCycle
tCycle
Paramter Synopsis
t
t
KQ
KQ
1/35
-250
Data Output Register. Holding FT high places the RAM in
Pipeline mode, activating the rising-edge-triggered Data Output
Register.
SCD and DCD Pipelined Reads
The GS88218/36B(B/D)-xxxV is a SCD (Single Cycle
Deselect) and DCD (Dual Cycle Deselect) pipelined
synchronous SRAM. DCD SRAMs pipeline disable commands
to the same degree as read commands. SCD SRAMs pipeline
deselect commands one stage less than read commands. SCD
RAMs begin turning off their outputs immediately after the
deselect command has been captured in the input registers.
DCD RAMs hold the deselect command for one full cycle and
then begin turning off their outputs just after the second rising
edge of clock. The user may configure this SRAM for either
mode of operation using the SCD mode input.
Byte Write and Global Write
Byte write operation is performed by using Byte Write enable
(BW) input combined with one or more individual byte write
signals (Bx). In addition, Global Write (GW) is available for
writing all bytes at one time, regardless of the Byte Write
control inputs.
FLXDrive™
The ZQ pin allows selection between high drive strength (ZQ
low) for multi-drop bus applications and normal drive strength
(ZQ floating or high) point-to-point applications. See the
Output Driver Characteristics chart for details.
Sleep Mode
Low power (Sleep mode) is attained through the assertion
(High) of the ZZ signal, or by stopping the clock (CK).
Memory data is retained during Sleep mode.
Core and Interface Voltages
The GS88218/36B(B/D)-xxxV operates on a 1.8 V or 2.5 V
power supply. All input are 2.5 V and 1.8 V compatible.
Separate output power (V
output noise from the internal circuits and are 2.5 V and 1.8 V
compatible.
200
230
160
185
3.0
4.0
5.5
5.5
-200
170
195
140
160
3.0
5.0
6.5
6.5
-150
140
160
128
145
3.8
6.7
7.5
7.5
Unit
DDQ
mA
mA
mA
mA
ns
ns
ns
ns
) pins are used to decouple
GS88218/36B(B/D)-xxxV
© 2002, GSI Technology
250 MHz–150 MHz
1.8 V or 2.5 V V
1.8 V or 2.5 V I/O
DD

Related parts for GS88236BB-200IV

GS88236BB-200IV Summary of contents

Page 1

... DCD RAMs hold the deselect command for one full cycle and then begin turning off their outputs just after the second rising edge of clock. The user may configure this SRAM for either mode of operation using the SCD mode input. Byte Write and Global Write ...

Page 2

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 3

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

Page 4

... GS88236BB-xxxV Pad Out—119-Bump BGA—Top View (Package Rev: 1.03 6/2006 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com ADSP DDQ ADSC ...

Page 5

GS88218BB-xxxV Pad Out—119-Bump BGA—Top View (Package Rev: 1.03 6/2006 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. ...

Page 6

GS88218/36B(B/D)-xxxV BGA Pin Description Symbol Type I — NC — CK ...

Page 7

Register – LBO ADV CK ADSC ADSP Power Down ZZ Control Note: Only x36 version shown ...

Page 8

Mode Pin Functions Mode Name Burst Order Control Output Register Control Power Down Control Single/Dual Cycle Deselect Control FLXDrive Output Impedance Control Note: There are pull-up devices on the ZQ, SCD, and FT pins and a pull-down device on the ...

Page 9

Byte Write Truth Table Function GW Read H Read H Write byte a H Write byte b H Write byte c H Write byte d H Write all bytes H Write all bytes L Notes: 1. All byte outputs are ...

Page 10

Synchronous Truth Table Address Operation Used Deselect Cycle, Power Down Deselect Cycle, Power Down Deselect Cycle, Power Down Read Cycle, Begin Burst External Read Cycle, Begin Burst External Write Cycle, Begin Burst External Read Cycle, Continue Burst Read Cycle, Continue ...

Page 11

Notes: 1. The diagram shows only supported (tested) synchronous state transitions. The diagram presumes G is tied low. 2. The upper portion of the diagram assumes active use of only the Enable (E1) and Write (B that ADSP is tied ...

Page 12

Notes: 1. The diagram shows supported (tested) synchronous state transitions plus supported transitions that depend upon the use Use of “Dummy Reads” (Read Cycles with G High) may be used to make the transition from read cycles ...

Page 13

Absolute Maximum Ratings (All voltages reference Symbol Voltage on V 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 ...

Page 14

V & V Range Logic Levels DDQ2 DDQ1 Parameter V Input High Voltage DD V Input Low Voltage DD Notes: 1. The part numbers of Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifica- tions ...

Page 15

AC Test Conditions Parameter Input high level Input low level Input slew rate Input reference level Output reference level Output load Notes: 1. Include scope and jig capacitance. 2. Test conditions as specified with output loading as shown in Fig. ...

Page 16

Operating Currents Parameter Test Conditions Device Selected; All other inputs Operating ≥V or ≤ V Current IH IL Output open Standby ZZ ≥ V – 0 Current Device Deselected; Deselect All other inputs Current ≥ ≤ ...

Page 17

AC Electrical Characteristics Parameter 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 to ...

Page 18

Begin Read A Cont Single Read Single Read CK ADSP tS tH ADSC tS ADV tS tH A0– Ba– tOE DQa–DQd Rev: 1.03 6/2006 Specifications cited ...

Page 19

Begin Read A Cont tKH tKH CK ADSP tS tH ADSC tS tH ADV tS tH A0– Ba– and E3 only sampled with ADSC tOE ...

Page 20

Begin Read A Cont CK ADSP tS tH ADSC tS ADV tS tH Ao– Ba– tOE DQa–DQd Hi-Z Rev: 1.03 6/2006 Specifications cited are subject ...

Page 21

Begin Read A Cont tKH tKH CK ADSP tS tH ADSC tH tS ADV tS tH Ao– Ba– and E3 only sampled with ADSP and ADSC ...

Page 22

... During normal operation, ZZ must be pulled low, either by the user or by it’s 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 23

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 input is sampled ...

Page 24

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 25

Tap Controller Instruction Set Overview There are two classes of instructions defined in the Standard 1149.1-1990; the standard (Public) instructions, and device specific (Private) instructions. Some Public instructions are mandatory for 1149.1 compliance. Optional Public instructions must be implemented in ...

Page 26

Instruction Register, moving the TAP controller into the Capture-DR state loads the data in the RAMs input and I/O buffers into the Boundary Scan Register. Boundary Scan Register locations are not associated with an input or I/O ...

Page 27

JTAG TAP Instruction Set Summary Instruction Code EXTEST 000 Places the Boundary Scan Register between TDI and TDO. IDCODE 001 Preloads ID Register and places it between TDI and TDO. Captures I/O ring contents. Places the Boundary Scan Register between ...

Page 28

JTAG Port Recommended Operating Conditions and DC Characteristics (1.8/2.5 V Version) Parameter 1.8 V Test Port Input Low Voltage 2.5 V Test Port Input Low Voltage 1.8 V Test Port Input High Voltage 2.5 V Test Port Input High Voltage ...

Page 29

... 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 30

Package Dimensions—119-Bump FPBGA (Package B, Variation 2 A1 TOP VIEW SEATING PLANE C Rev: 1.03 6/2006 ...

Page 31

Package Dimensions—165-Bump FPBGA (Package D) A1 CORNER TOP VIEW SEATING PLANE C Rev: 1.03 ...

Page 32

... GS88236BB-200V 256K x 36 GS88236BB-150V 512K x 18 GS88218BB-250IV 512K x 18 GS88218BB-200IV 512K x 18 GS88218BB-150IV 256K x 36 GS88236BB-250IV 256K x 36 GS88236BB-200IV 256K x 36 GS88236BB-150IV 512K x 18 GS88218BGB-250V 512K x 18 GS88218BGB-200V 512K x 18 GS88218BGB-150V 256K x 36 GS88236BGB-250V 256K x 36 GS88236BGB-200V 256K x 36 ...

Page 33

... Notes: 1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS88236BB-150IVT. 2. The speed column indicates the cycle frequency (MHz) of the device in Pipeline mode and the latency (ns) in Flow Through mode. Each device is Pipeline/Flow Through mode-selectable by the user. ...

Page 34

... Notes: 1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS88236BB-150IVT. 2. The speed column indicates the cycle frequency (MHz) of the device in Pipeline mode and the latency (ns) in Flow Through mode. Each device is Pipeline/Flow Through mode-selectable by the user. ...

Page 35

... Sync SRAM Datasheet Revision History DS/DateRev. Code: Old; New 882VxxB_r1 882VxxB_r1; 882VxxB_r1_01 882VxxB_r1_01; 882VxxB_r1_02 882VxxB_r1_02; 882xxB_V_r1_03 Rev: 1.03 6/2006 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Types of Changes Format or Content • Creation of new datasheet • Updated mechanical drawings and added variation numbers ...

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