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GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Features : 524,288 words by 8 bits organization.
Fast access time and cycle time. Low power dissipation. Operating Current-150mA max. TTL Standby Current-2mA max. Read-Modify-Write, RAS -Only Refresh,
Description :
The GLT44108 is a 524,288 x 8 bit highperformance CMOS dynamic random access memory. The GLT44108 offers Fast Page mode with asymmetric address and accepts 512-cycle refresh in 8ms interval. All inputs are TTL compatible. Fast Page Mode operation allows random access up to 512 x 8 bits within a page, with cycle times as short as 22ns. The GLT44108 is best suited for graphics, digital signal processing and high performance peripherals.
CAS -Before- RAS Refresh, Hidden Refresh and Test Mode Capability. 1024 refresh cycles/16ms. Available in 28pin 400 mil SOJ Single +5.0V10% Power Supply. All inputs and Outputs are TTLcompatible. Fast Page Mode supports sustained data rates up to 50MHZ.
PIN CONFIGURATION :
GLT44108 28 Lead SOJ
Vcc DQ0 DQ1 DQ2 DQ3 NC WE RAS A9 A0 A1 A2 A3 VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VSS DQ7 DQ6 DQ5 DQ4 CAS OE NC A8 A7 A6 A5 A4 VSS
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-1-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
HIGH PERFORMANCE Max. RAS Access Time, (tRAC) Max. Column Address Access Time, (tAA) Min. Fast Page Mode Cycle Time, (tPC) Min. Read/Write Cycle Time, (tRC) Max. CAS Access Time (tCAC)
-40 40 ns 20 ns 22 ns 75 ns 12 ns
-50 50 ns 25 ns 31 ns 90 ns 13 ns
-60 60 ns 30 ns 40 ns 110 ns 15 ns
Pin Descriptions: Name A0 - A9 RAS CAS WE OE DQ0 - DQ7 VCC VSS Block Diagram:
OE WE CAS
Function Address Inputs Row Address Strobe Column Address Strobe Write Enable Output Enable Data Inputs / Outputs +5V Power Supply Ground
RAS
RAS CLOCK GENERATOR
CAS CLOCK GENERATOR
W E CLOCK GENERATOR
OE CLOCK GENERATOR
V CC V SS
Data I/O B U S COLUMN DECODERS REFRESH COUNTER
Y 0 - Y8 9 1024 A0 A1 A8 A9 512x8
I/O0
SENSE AMPLIFIERS
I/O BUFFER
I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7
. .
ADDRESS BUFFERS AND PREDECODERS
X 0 - x9
ROW DECODERS
MEMORY ARRAY
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-2-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Absolute Maximum Ratings* Operating Temperature, TA (ambient)
......................................-10C to +80C Storage Temperature(plastic)....-55C to +150C Voltage Relative to VSS...............-1.0V to + 7.0V Short Circuit Output Current......................50mA Power Dissipation......................................1.0W
*Note:Operation above Absolute Maximum Ratings can adversely affect device reliability.
Capacitance*
TA=25C, VCC=5V10%, VSS=0V Symbol CIN1 CIN2 COUT Parameter Address Input RAS , CAS , WE , OE Data Input/Output Max. Unit 5 7 7 pF pF pF
*Note: Capacitance is sampled and not 100% tested
Electrical Specifications
l l
All voltages are referenced to GND. After power up, wait more than 200s and then, execute eight CAS before RAS or RAS only refresh cycles as dummy cycles to initialize internal circuit.
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-3-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
DC and Operating Characteristics (1-2)
TA = 0C to 70C, VCC=5V10%, VSS=0V, unless otherwise specified.
Sym.
ILI
Parameter
Input Leakage Current (any input pin) Output Leakage Current (for High-Z State) Operating Current, Random READ/WRITE Standby Current,(TTL) Refresh Current, RAS -Only
Test Conditions
0V VIN 5.5V (All other pins not under test=0V) 0V Vout 5.5V Output is disabled (Hiz) tRC = tRC (min.) RAS , CAS , at VIH other inputs VSS RAS cycling, CAS at VIH tRC = tRC (min.) RAS at VIL, CAS ,address cycling:tPC=tPC(min.)
Access Time
Min.
-10
Typ
Max. Unit Notes
+10 A
ILO ICC1
-10 tRAC = 40ns tRAC = 50ns tRAC = 60ns
+10 150 140 120 2
A
mA
1,2
ICC2 ICC3
mA mA 2
tRAC = 40ns tRAC = 50ns tRAC = 60ns tRAC = 40ns tRAC = 50ns tRAC = 60ns tRAC = 40ns tRAC = 50ns tRAC = 60ns
150 140 120 150 140 120 150 140 120 1
ICC4
Operating Current, FAST Page Mode
mA
1,2
ICC5
Refresh Current, CAS Before RAS
RAS , CAS , address cycling: tRC=tRC(min.) RAS VCC-0.2V, CAS VCC-0.2V, All other inputs VSS
mA
1
ICC6
Standby Current, (CMOS)
mA
VIL VIH VOL VOH Notes:
Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage
-1 2.4 IOL = 4.2mA IOH = -5mA 2.4
+0.8 VCC+1 0.4
V V V V
3 3
1.ICC is dependent on output loading when the device output is selected. Specified ICC(max.) is measured with the output open. 2.ICC is dependent upon the number of address transitions specified. ICC(max.) is measured with a maximum of one transition per address cycle in random Read/Write and Fast Page Mode. 3. Specified VIL(min.) is steady state operation. During transitions, VIL(min.) may undershoot to -1.0V for a period not to exceed 20ns.All AC parameters are measured with VIL(min.)Vss and VIH(max.)Vcc.
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-4-
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AC Characteristics (0 CTA 70 C,See note 1,2)
Test condition:VCC=5.0V10%, VIH/VIL=2.4V/0.8V,VOH/VOL=2.0V/0.8V Parameter 40 ns 50 ns Symbol MIN. MAX. MIN. MAX.
Read/Write Cycle Time Read Midify Write Cycle Time Access Time from RAS Access Time from CAS Access Time from Column Address CAS to Output in Low-Z Output Buffer Turn-off Delay from CAS Transition Time(Rise and Fall) RAS Precharge Time RAS Pulse Width RAS Hold Time CAS Hold Time CAS Pulse Width RAS to CAS Delay Time RAS to Column Address Delay Time CAS to RAS Precharge Time Row Address Setup Time Row Address Hold Time Column Address Setup Time Column Address Hold Time Column Address Hold Time Referenced to RAS Column Address Lead Time Referenced to RAS Read Command Setup Time Read Command Hold Time Referenced to RAS Read Command Hold Time Referenced to CAS WE Hold Time Referenced to CAS Write Command Hold Time Referenced to RAS tWCH tWCR 6 30 7 40 10 45 tRC tRWC tRAC tCAC tAA tCLZ tOFF tT tRP tRAS tRSH tCSH tCAS tRCD tRAD tCRP tASR tRAH tASC tCAH tAR tRAL tRCS tRRH tRCH 75 120 0 0 3 25 40 12 40 12 16 11 5 0 6 0 6 30 20 0 0 0 40 12 20 8 50 10000 10000 30 22 90 140 0 0 3 30 50 13 50 13 18 13 5 0 8 0 8 40 25 0 0 0 50 13 25 10 50 10000 10000 37 25 -
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
60 ns MIN. MAX. Unit
110 160 0 0 3 40 60 15 60 15 20 15 5 0 10 0 10 45 30 0 0 0 60 15 30 13 50 10000 10000 45 30 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
Notes
3,4 3,4 3,4 3 7 2
4 4 8
9 9 10 5
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-5-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Parameter Symbol
WE Pulse Width WE Lead Time Referenced to RAS WE Lead Time Referenced to CAS Data-In Setup Time Data-In Hold Time Data Hold Time Referenced to RAS Refresh Time(256cycles) WE Setup Time RAS to WE Delay Time CAS to WE Delay Time Column Address to WE Delay Time CAS Setup Time( CAS before RAS Refresh) CAS Hold Time( CAS before RAS Refresh) RAS to CAS Precharge Time CAS Precharge Time(CBR Counter Test Cycle) Access Time from CAS Precharge Fast Page mode Read/Write Cycle Time Fast Page mode Read Modify Write Cycle Time CAS Precharge Time(Fast Page mode) RAS Pulse Width(Fast Page mode) RAS Hold Time from CAS Precharge Access Time from OE OE to Delay Time Output Buffer Turn-off Delay Time from OE OE Hold Time WE Hold Time(Hidden Refresh Cycle) tOEH tWHR tWP tRWL tCWL tDS tDH tDHR tREF tWCS tRWD tCWD tAWD tCSR tCHR tRPC tCPT tCPA tPC tPRWC tCP tRASP tRHCP tOEA tOED tOEZ
40 ns MIN. MAX.
6 13 13 0 6 33 0 60 28 38 5 10 5 20 30 65 7 40 25 8 0 0 15 8 25 125000
50 ns MIN. MAX.
7 17 14 0 7 40 0 70 33 43 5 10 5 20 35 80 8 50 30 10 0 0 15 8 30 125000
60 ns MIN. MAX. Unit
10 15 15 0 10 45 0 85 38 53 5 10 5 20 40 90 10 60 35 13 0 0 15 8 35 125000
Notes
10
ns ns ns ns ns ns ms ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
11 11 6 5 5 5 5
3
10 8 -
13 10 -
15 13 -
7
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-6-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Notes 1. An initial pause of 200s is required after power-up followed by any 8 RAS only Refresh or CAS before RAS Refresh cycles to initialize the internal circuit. 2. VIH(min.) and VIL(min.) are reference levels for measuring timing of input signals. Transition times are measured between VIH(min.) and VIL(max.) are assumed to be 5ns for all inputs. 3. Measured with an equivalent to 1 TTL loads and 50pF. 4. For read cycles, the access time is defined as follows: Input Conditions Access Time tRAC(MAX.) tRAD tRAD(MAX.) and tRCD tRCD(MAX.) tAA(MAX.) tRAD(max.)< tRAD and tRCD tRCD(MAX.) tRCD(max.)< tRCD tCACMAX.) tRAD(MAX.) and tRCD(MAX.) indicate the points which the access time changes and are not the limits of operation. 5. tWCS,tRWD,tCWD and tAWD are non restrictive operating parameters. They are included in the data sheet as electric characteristics only. If tWCS tWCS(min.), the cycle is an early write cycle and the data output will remain high impedance for the duration of the cycle.If tCWD tCWD(min.),tRWD tRWD (min.) and tAWD tAWD(min.), then the cycle is a read-modify-write cycle and the data output will contain the data read from the selected address. If neither of the above conditions is satisfied, the condition of the data out is indeterminate. 6. tAR,tWCR, and tDHR are referenced to tRAD(max.). 7. tOFF(max.) and tOEZ(max.) define the time at which the output achieves the open circuit condition and are not referenced to VOH or VOL. 8. tCRP(min) requirement should be applicable for RAS , CAS cycle preceded by any cycles. 9. Either tRCH(min.) or tRRH(min.) must be satisfied for a read cycle. 10. tWP(min.) is applicable for late write cycle or read modify write cycle. In early write cycles,tWCH(min.) should be satisfied. 11.This specification is referenced to CAS falling edge in early write cycles and to WE falling edge in late write or read modify write cycles.
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-7-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Read Cycle
tRC tRAS
VIH-
tRP
RAS
VIL-
tCRP
VIH-
tCSH tRCD tRSH tCAS
tCRP
CAS
VIL-
tASR Address
VIHVIL-
tRAD tRAH
tRAL tASC tCAH
COLUMN ADDRESS
ROW ADDRESS
tRCS
VIH-
tRCH tRRH
WE
VIL-
tAR tAA tOEZ tOEA tCAC tCLZ
DATA-OUT
tOFF
VIH-
OE
VIL-
tRAC DQ
VOHVOL-
OPEN
Don't Care
Early Write Cycle NOTE : DOUT = Open
tRC tRP
VIH-
tRAS
RAS
VIL-
tCSH tCRP
VIH-
tRCD tCAS
tRSH
tCRP
CAS
VIL-
VIH-
tASR tRAH
ROW ADDRESS
tRAD tASC tCAH
COLUMN ADDRESS
tRAL
Address
VIL-
tCWL tRWL tAR
VIH-
tWCS
WE
VIL-
tWCR tWCH tWP
VIH-
OE
VIL-
tDHR tDS
VIH-
tDH
DATA - IN
DQ
VIL-
Don't Care
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-8-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Late Write Cycle ( OE Controlled Write)
VIHVIL-
NOTE : DOUT = Open
tRC tRP tRAS
RAS
tCSH tCRP CAS
VIHVIL-
tRCD tCAS
tRSH
tCRP
VIH-
tASR tRAH
ROW ADDRESS
tRAD tASC
tRAL tCAH
COLUMN ADDRESS
Address
VIL-
tCWL tRWL tRCS
VIH-
WE
tWP
VIL-
VIH-
OE
VIL-
tOED tDS
tOEH tDH
COLUMN ADDRESS Don't Care
VIH-
DQ
VIL-
Read - Modify - Write Cycle
tRC tRP RAS
VIHVIL-
tRAS
tCRP CAS
VIHVIL-
tRCD
tRSH tCAS tCSH
tCRP
tASR Address
VIHVIL-
tRAD tASC tCAH
COLUMN ADDRESS
tRAH
ROW ADDR.
tAWD tCWD WE
VIHVIL-
tRWL tCWL tWP
OE
VIHVIL-
tOEA tCLZ tAA tCAC tOED tOEZ tDS
tDH
VALID DATA-IN Don't Care
DQ
VI/OHVI/OL-
tRAC
VALID DATA-OUT
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
-9-
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Fast Page Read Cycle
tRASP
VIH-
tRP
RAS
VIL-
tPC tCRP
VIH-
tPC tCAS tCP tRSH tCAS
tRCD
tCAS
tCP
CAS
VIL-
tRAD tCSH tASR tRAH tASC tCAH
COLUMN ADDRESS
tASC
tCAH
tASC
tCAH
Address
VIHVIL-
ROW ADDR.
COLUMN ADDRESS
COLUMN ADDRESS
tRCS
VIH-
tRCH
tRCS
tRCS
tRRH tRCH
WE
VIL-
tCAC tOEA
tCAC tOEA
VIH-
OE
VIL-
tRAC tCLZ
VIH-
tAA
tAA tOFF tCLZ tOEZ
tAA tOFF tCLZ tOEZ
tOFF tOEZ
DQ
VILVALID DATA-UOT VALID DATA-UOT VALID DATA-UOT
Don't Care
Fast Page Write Cycle
VIH-
NOTE : DOUT = Open
tRASP tRP tRHCP tPC tCRP tRCD tCAS tCP tPC tCAS tCP tRSH tCAS tRAD tASR tRAH tASC tCSH tCAH
COLUMN ADDRESS
RAS
VIL-
VIH-
CAS
VIL-
tASC
tCAH
tASC
COLUMN ADDRESS
tCAH
Address
VIHVIL-
ROW ADDR.
COLUMN ADDRESS
tWCS
VIH-
tWCH tWP tCWL
tWCS tWP
tWCH
tWCS
tWCH tWP
WE
VIL-
tCWL
tCWL tRWL
VIH-
OE
VIL-
tDS
VIH-
tDH
VALID DATA-IN
tDS
VALID DATA-IN
tDS
tDS
VALID DATA-IN
tDS
DQ
VIL-
Don't Care
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
- 10 -
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Fast Page Mode Late Write Cycle
tRASP
VIH-
tRP tRHCP
RAS
VIL-
tCSH tCRP CAS
VIHVIL-
tPC tCAS tCP tCAS tCP tRSH tCAS tCRP
tRCD
tRAD tASR Address
VIHVILROW ADDR.
tCAH tASC
COLUMN ADDRESS
tRAH
tASC
COLUMN ADDRESS
tCAH
tASC
COLUMN ADDRESS
tRAL tCAH
tRCS
VIH-
tCWL tWP
tRCS
tCWL tWP
tRCS
tCWL tRWL tWP
WE
VIL-
tOEH
VIH-
tOEH
tOEH
OE
VIL-
tOED
VIH-
tDS
tDH
tOED tDS Hi-Z
tDH
tOED tDS Hi-Z
tDH
Hi-Z
DQ
VIL-
VALID DATA-IN
VALID DATA-IN
VALID DATA-IN
Don't Care
Fast Page Read - Modify - Write Cycle
tRASP RAS
VIHVIL-
tRP
tCSH tRSH tCAS
tRCD
VIH-
tCAS
tCP
tCRP
CAS
VIL-
tASR
VIH-
tRAD tRAH tASC
tCAH tASC
COL. ADDR. COL. ADDR.
tPRWC tRAL tCAH
Address
VIL-
ROW ADDR.
tRCS
VIH-
tCWL tCWD tAWD tRWD tWP tCWD tAWD tCPWD
WE
tRWL tCWL tWP
VIL-
tOEH tDH tOED tOEZ tDS tOEA tCAC tAA tOED tOEZ tDH tDS
VIH-
OE
tOEA tCAC tAA tRAC
VIL-
VI/OH-
DQ
VI/OL-
tCLZ
VALID DATA-OUT VALID DATA-IN
tCLZ
VALID DATA-OUT VALID DATA-IN Don't Care
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
- 11 -
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
CAS Before RAS Refresh Cycle
tRC tRAS
VIH-
tRC tRP tRAS tRP
RAS
VIL-
tCSR CAS
VIHVIL-
tCHR
tRPC
tCSR
tCHR
tRPC
tCRP
RAS -Only Refresh Cycle
tRC tRAS
VIH-
tRC tRP tRAS tRP
RAS
VIL-
tCRP CAS
VIHVIL-
tRPC
tCRP
tASR Address
VIH-
tRAH
ROW
tASR
tRAH
ROW
VIL-
Hidden Refresh Cycle ( Read )
tRC tRAS RAS
VIHVIL-
tRC tRP tRAS tRP
tCRP
VIH-
tRCD
tRSH
tCHR
CAS
VIL-
tRAD tASR Address
VIHVIL-
tRAL tASC
COLUMN ADDRESS
tCAH
tCAH
ROW ADDRESS
tRCS
VIH-
tWHR
WE
VIL-
tAA tOEA
VIH-
OE
VIL-
tCAC tRAC DQ
VIHVIL-
tCLZ
tOEZ
DATA-OUT
tOFF
OPEN
Don't Care
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
- 12 -
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Hidden Refresh Cycle ( Write )
VIHVIL-
NOTE : DOUT =Open
tRC tRAS tRP tRAS tRC tRP
RAS
tCRP
VIH-
tRCD
tRSH
tCHR
CAS
VIL-
tRAD tASC Address
VIHVIL-
tCAH
tASC
COLUMN ADDRESS
tCAH
ROW ADDRESS
tWCS
VIH-
tWCH tWP
WE
VIL-
VIH-
OE
VIL-
tDS DQ
VIHDATA-IN
tDH
VIL-
Don't Care
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
- 13 -
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
CAS - Before RAS Refresh Counter Test Cycle
tRAS
VIHRAS VIL-
tRP
tCSR
VIHCAS VIL-
tCHR
tCPT
tRSH tCAS tRAL tCAH
tASC AddressVIHVILCOLUMN ADDRESS
Read Cycle
WE VILOE VILVIH-
tWRP
tWRH
tAA tCAC tRCS tOEA tCLZ tOEZ
VALID DATA-OUT
tRRH tRCH
VIH-
tCEZ
DQ VOL-
VOH-
Write Cycle
VIHWE VIL-
tWRP
tWRH tWCS
tRWL tCWL tWCH tWP
OE VIL-
VIH-
tDS
VIHDQ VIL-
tDH
VALID DATA-IN
OPEN tRCS
Read-Modify-Write
WE VILVIH-
tAWD tCWD tCAC tAA tOEA tOED tCLZ tOEZ
tCWL tRWL tWP
OE VIL-
VIH-
tDH tDS
DQ VI/OL-
VI/OH-
VALID VALID DATA-OUT DATA-IN
Don't Care
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
- 14 -
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Ordering Information
Part Number
GLT44108-40J4 GLT44108-50J4 GLT44108-60J4
SPEED
40ns 50ns 60ns
POWER
Normal Normal Normal
FEATURE
FPM FPM FPM
PACKAGE
SOJ 400mil 28L SOJ 400mil 28L SOJ 400mil 28L
Parts Numbers (Top Mark) Definition :
GLT 4 41
4 : DRAM 6 : Standard SRAM 7 : Cache SRAM 8 : Synchronous Burst SRAM
08 - 40 J4
PACKAGE -SRAM CONFIG. SPEED T : PDIP(300mil) 064 : 8K 04 : x04 -SRAM TS : TSOP(Type I) 256 : 256K 08 : x08 12 : 12ns TC : TSOP(Type ll) 512 : 512K 16 : x16 15 : 15ns PL : PLCC 100 : 1M 32 : x32 20 : 20ns FA : 300mil SOP -DRAM 70 : 70ns FB : 330mil SOP 10 : 1M(C/EDO)* -DRAM FC : 445mil SOP 11 : 1M(C/FPM)* 35 : 35ns J3 : 300mil SOJ 12 : 1M(H/EDO)* 40 : 40ns J4 : 400mil SOJ 13 : 1M(H/FPM)* 45 : 45ns VOLTAGE P : PDIP(600mil) 20 : 2M(EDO) 50 : 50ns Blank : 5V Q : PQFP 21 : 2M(FPM) 60 : 60ns L : 3.3V TQ : TQFP 40 : 4M(EDO) M : Mix Voltage 41 : 4M(FPM) 80 : 8M(EDO) 81 : 8M(FPM) *See note Note : CUCDROM , HUHDD. Example : 1.GLT710008-15T 1Mbit(128Kx8)15ns 5V SRAM PDIP(300mil)Package type. 2.GLT44016-40J4 4Mbit(256Kx16)40ns 5V DRAM SOJ(400mil)Package type.
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
- 15 -
G -LINK
GLT44108
512K X 8 CMOS DYNAMIC RAM WITH FAST PAGE MODE
Preliminary Aug 1999 (Rev.2.1)
Package Information 400mil 28 Lead Small Outline J-form Package (SOJ)
G-Link Technology
2701 Northwestern Parkway Santa Clara, CA 95051, U.S.A.
G-Link Technology Corporation,Taiwan
6F, No.24-2, Industry E. RD. IV, Science Based Industrial Park, Hsin Chu, Taiwan.
- 16 -


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