gvt72028a4 ETC-unknow, gvt72028a4 Datasheet
gvt72028a4
Related parts for gvt72028a4
gvt72028a4 Summary of contents
Page 1
... TRADITIONAL PINOUT 256K X 4 256K x 4 SRAM WITH SINGLE CHIP ENABLE TRADITIONAL PINOUT GENERAL DESCRIPTION The GVT72028A4 is organized as a 262,144 x 4 SRAM using a four-transistor memory cell with a high performance, silicon gate, low-power CMOS process. Galvantech SRAMs are fabricated using double-layer polysilicon, double-layer metal technology. ...
Page 2
... Chip Enable: This active LOW input is used to enable the device. When CE# is LOW, the chip is selected. When CE# is HIGH, the chip is disabled and automatically goes into standby power mode. Input Output Enable: This active LOW input enables the output drivers. + Power Supply: 5V 10% Ground 2 GVT72028A4 VCC VSS DQ1 DQ4 CE# WE# OE# POWER DOWN DESCRIPTION Galvantech, Inc ...
Page 3
... VCC SYM TYP ; VCC =MAX; Icc 80 standard IL standard I 20 MAX SB1 standard I 0.75 SB2 CONDITIONS SYMBOL MHz C I VCC = 5V C I/O 3 GVT72028A4 MIN MAX UNITS 2.2 VCC+1 V -0.5 0 2.4 V 0.4 V 4.5 5.5 V -10 -12 -15 -20 POWER 240 220 180 140 low ...
Page 4
... WP2 WP1 LZWE 3 4 HZWE GVT72028A4 - MAX MIN MAN UNITS NOTES ...
Page 5
... Fig. 1. 14. Typical values are measured at 5V HZCE is less CONDITIONS SYMBOL Vcc = 2V CCDR I Vcc = 3V CCDR t CDR GVT72028A4 1.5V Fig. 1 OUTPUT LOAD EQUIVALENT +5V 480 Q 255 and 20ns cycle time. MIN TYP MAX UNITS 2 ...
Page 6
... CDR (8, 9) READ CYCLE NO VALID (7, 8, 10, 12) READ CYCLE NO AOE t LZOE t ACE t LZCE HIGH Z DATA VALID 6 GVT72028A4 t RC DATA VALID t HZCE t HZOE DON'T CARE UNDEFINED Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 7
... WP2 AS DATA VALID t HZWE (12, 13) WRITE CYCLE NO WP1 AS DATA VALID HIGH Z 7 GVT72028A4 LZWE HIGH DON'T CARE UNDEFINED Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 8
... CE# WE January 10, 1997 Rev. 1/97 , TRADITIONAL PINOUT 256K X 4 (12, 13) WRITE CYCLE NO. 3 (Chip Enable Controlled WP1 t DS DATA VALID HIGH Z 8 Galvantech, Inc. reserves the right to change products or specifications without notice. GVT72028A4 DON'T CARE ...
Page 9
... MIN .730 (18.54) .697 (17.70) .347 (8.81) .327 (8.31) .140 (3.54) .050 (1.27) TYP .120 (3.04) .095 (2.41) .080 (2.03) .020 (0.51) .014 (0.36) MAX or typical, min where noted. MIN 9 GVT72028A4 .145 (3.68) .131 (3.33) .380 (9.65) .360 (9.14) .030 (0.76) MIN .275 (6.99) .260 (6.60) .025 (0.63) MIN Galvantech, Inc. reserves the right to change products or specifications without notice. ...
Page 10
... Galvantech Prefix Part Number January 10, 1997 Rev. 1/97 , TRADITIONAL PINOUT 256K Galvantech, Inc. reserves the right to change products or specifications without notice. GVT72028A4 Temperature (Blank = Commercial I = Industrial) Power (Blank= Standard, L= Low Power) Speed (10 = 10ns, 12= 12ns 15 = 15ns 20ns) Package (J = 400 mil SOJ, SJ= 300 mil SOJ) ...