gvt71256d18 ETC-unknow, gvt71256d18 Datasheet
gvt71256d18
Related parts for gvt71256d18
gvt71256d18 Summary of contents
Page 1
... READ cycle. This device also incorporates pipelined enable circuit for easy depth expansion without penalizing system performance. The GVT71256D18 operates from a +3.3V power supply. All inputs and outputs are LVTTL compatible. The device is ideally suited for 486, Pentium PowerPC ...
Page 2
... X 18 SYNCHRONOUS BURST SRAM UPPER BYTE WRITE D Q LOWER BYTE WRITE D Q ENABLE Input Register Address Register CLR Binary Counter & Logic 2 GVT71256D18 Q OUTPUT REGISTER DQ1- DQ16 DQP1, DQP2 Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 3
... CE# Input- Chip Enable: This active LOW input is used to enable the device and to gate ADSP#. Synchronous CE2# Input- Chip Enable: This active LOW input is used to enable the device. Synchronous 3 GVT71256D18 ...
Page 4
... No Connect: These signals are not internally connected. Third Address Fourth Address (internal) (internal) A...A10 A...A11 A...A11 A...A10 A...A00 A...A01 A...A01 A...A00 Third Address Fourth Address (internal) (internal) A...A10 A...A11 A...A11 A...A00 A...A00 A...A01 A...A01 A...A10 4 GVT71256D18 DESCRIPTION Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 5
... BWE# WEH# WEL GVT71256D18 ADV# WRITE# OE# CLK L-H High L-H High L-H High L-H High L-H High L L-H High-Z ...
Page 6
... < VCC IL OUT VCC VCCQ SYM TYP or > Icc 150 SB2 SB3 I 40 SB4 ; VCC = MAX GVT71256D18 MIN MAX UNITS NOTES 2.0 VCC+0.3 V 2.0 4.6 V -0 2.4 V 0.4 V 3.135 3.6 V 3.135 VCC ...
Page 7
... MHz C I VCC = 3. CONDITIONS SYMBOL TQFP TYP Still air, soldered on 4. 1.125 inch 4-layer PCB JC OUTPUT LOW VOLTAGE m ax VOL (V) -105 -0.5 -105 0 -105 0.4 -83 0.8 -70 1.25 -30 1.6 -10 2.8 0 3.2 0 3.4 7 GVT71256D18 - 133MHz 117MHz MIN MAX MIN MAX UNITS 7.5 8.5 ns 2.8 3.4 ns 2.8 3.4 ns 4.0 4.0 ns 1.5 1 1.5 7.5 1.5 8.5 ns 3.8 3.8 ns ...
Page 8
... See Figures 1 and 2 15. Capacitance derating applies to capacitance different from the load capacitance shown in Fig / increases with greater t KQHZ is less o C and 8.5ns cycle time. 8 GVT71256D18 1.5V Fig. 1 OUTPUT LOAD EQUIVALENT 3.3v 317 351 Fig. 2 OUTPUT LOAD EQUIVALENT ...
Page 9
... Note: CE# active in this timing diagram means that all chip enables CE#, CE2, and CE2# are active. November 6, 1998 Rev. 11/98 , INC. 256K X 18 SYNCHRONOUS BURST SRAM READ TIMING OEQ t OELZ Q(A1) Q(A2) Q(A2+1) SINGLE READ 9 GVT71256D18 t H Q(A2+2) Q(A2+3) Q(A2) BURST READ Galvantech, Inc. reserves the right to change products or specifications without notice. Q(A2+1) ...
Page 10
... Note: CE# active in this timing diagram means that all chip enables CE#, CE2, and CE2# are active. November 6, 1998 Rev. 11/98 , INC. 256K X 18 SYNCHRONOUS BURST SRAM WRITE TIMING OEHZ D(A1) D(A2) D(A2+1) D(A2+1) BURST WRITE 10 GVT71256D18 D(A2+2) D(A2+3) D(A3) D(A3+1) BURST WRITE Galvantech, Inc. reserves the right to change products or specifications without notice. D(A3+2) ...
Page 11
... Note: CE# active in this timing diagram means that all chip enables CE#, CE2, and CE2# are active. November 6, 1998 Rev. 11/98 , INC. 256K X 18 SYNCHRONOUS BURST SRAM READ/WRITE TIMING Q(A1) Q(A2) D(A3) Q(A3) Pass Through Single Write 11 GVT71256D18 A5 Q(A4) Q(A4+1) Q(A4+2) D(A5) D(A5+1) Burst Read Burst Write Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 12
... GALVANTECH 100 Pin TQFP Package Dimensions # 1 1.40 + 0.05 1.60 Max Note: All dimensions in Millimeters November 6, 1998 Rev. 11/98 , INC. 256K X 18 SYNCHRONOUS BURST SRAM 16.00 + 0.10 14.00 + 0.10 0.65 Basic 12 GVT71256D18 0.30 + 0.08 0.60 + 0.15 Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 13
... Note: All dimensions in Millimeters November 6, 1998 Rev. 11/98 , INC. 256K X 18 SYNCHRONOUS BURST SRAM 22.00 + 0.20 20.32 1. BOTTOM VIEW 19.50 + 0.10 TOP VIEW SIDE VIEW 13 GVT71256D18 0.60 + 0.10 Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 14
... Galvantech Prefix Part Number November 6, 1998 Rev. 11/98 , INC. 256K X 18 SYNCHRONOUS BURST SRAM 14 GVT71256D18 Speed (3 = 3.5ns access/6.0ns cycle 4 = 3.8ns access/6.7ns cycle 5 = 4.0ns access/7.5ns cycle 6 = 4.0ns access/8.5ns cycle) Package (B = 119 LEAD BGA 100 PIN TQFP) Galvantech, Inc. reserves the right to change products or specifications without notice. ...