w27e040 Winbond Electronics Corp America, w27e040 Datasheet
w27e040
Available stocks
Related parts for w27e040
w27e040 Summary of contents
Page 1
... ELECTRICALLY ERASABLE EPROM GENERAL DESCRIPTION The W27E040 is a high speed, low power Electrically Erasable and Programmable Read Only Memory organized as 524288 provides an electrical chip erase function. FEATURES High speed access time: 90/120 nS (max.) Read operating current (typ.) Erase/Programming operating current 15 mA (typ ...
Page 2
... The erase operation is the only way to change data from "0" to "1." Unlike conventional UVEPROMs, which use ultraviolet light to erase the contents of the entire chip (a procedure that requires up to half an hour), the W27E040 uses electrical erasure. Generally, the chip can be erased within 100 mS by using an EPROM writer with a special erase algorithm. ...
Page 3
... In standby mode, all outputs are in a high impedance state, independent of OE. CC Two-line Output Control Since EPROMs are often used in large memory arrays, the W27E040 provides two control inputs for multiple memory connections. Two-line control provides for lowest possible memory power dissipation and ensures that data bus contention will not occur. ...
Page 4
... -0 and removed simultaneously or after V PP SYMBOL CONDITIONS OUT OUT - 4 - W27E040 RATING UNIT -55 to +125 C -65 to +125 -0.5 to +14.5 V -0.5 to +14 LIMITS UNIT MIN. TYP. MAX. - ...
Page 5
... Input and Output Timing Reference Level Output Load AC Test Load and Waveform D OUT Input 2.4V 0.45V 0.45V to 2. 0.8V/2. 100 pF +1.3V (IN914) 3.3K ohm 100 pF (Including Jig and Scope) Output Test Points Test Points 2.0V 2.0V 0.8V 0.8V Publication Release Date: May 1997 - 5 - W27E040 CONDITIONS /I = -0.4 mA/2 Revision A1 ...
Page 6
... ACC and removed simultaneously or after W27E040 LIMITS MIN. TYP. MAX - 1 100 - - -0.3 - 0 0 W27E040-12 MAX. MIN. MAX. - 120 - 90 - 120 90 - 120 UNIT UNIT ...
Page 7
... SYM. MIN. T 2.0 VPS PWP T 95 PWE T 2 2.0 OES T - OEV T 0 DFP 2.0 AHC and removed simultaneously or after W27E040 LIMITS UNIT MIN. TYP. MAX. - -0.3 - 0.8 V 2 0. 11.5 12.0 12.5 V 11.75 12.0 12.25 V 4.5 5.0 5.5 V LIMITS UNIT TYP. MAX. ...
Page 8
... Address IL Others = V IL Stable ACC AS ARC T DFP DA 86 Data All One D OUT AHC T VPS OES PWE OE T OEV - 8 - W27E040 Valid Output High Z Blank Check Read Verify Address Address Stable Stable T ACC D D OUT OUT ...
Page 9
... Program Program Verify Address Stable Address Stable T DFP Data In Stable OUT OUT VPS T PWP T OES T OEV - 9 - W27E040 Read Verify Address Valid T ACC D OUT Publication Release Date: May 1997 Revision A1 ...
Page 10
... Program One 100 S Pulse Increment X Yes X = 25? No Fail Verify One Byte Verify One Byte Pass No Last Address? Yes *Program whole chip without data verification and read Vcc = 5V Vpp = 5V Fail Compare All Bytes to Original Data Pass Pass Device - 10 - W27E040 Fail Pass Fail Device ...
Page 11
... Vpp = 14V A9 = 14V Chip Erase 100 mS Pulse Address = First Location Increment X Fail Erase Verify Pass No Last Address? Yes Vcc = 5V Vpp = 5V Compare Fail All Bytes to FFs (HEX) Pass Pass Device - 11 - W27E040 20? Yes Fail Device Publication Release Date: May 1997 Revision A1 ...
Page 12
... W27E040S-12 120 W27E040P-90 90 W27E040P-12 120 W27E040T-90 90 W27E040T-12 120 Notes: 1. Winbond reserves the right to make changes to its products without prior notice. 2. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in applications where personal injury might occur as a consequence of product failure. ...
Page 13
... Base Plane 1 Seating Plane Detail See Detail W27E040 Dimension in inches Dimension in mm Symbol Min. Nom. Max. Min. Nom. Max. 0.210 5.33 A 0.25 A 0.010 1 A 0.160 3.81 3.94 4.06 0.155 0.150 2 0.016 0.018 0.022 0.41 0.46 0. ...
Page 14
... TSOP 0.10(0.004 W27E040 Dimension In Inches Dimension In mm Symbol Min. Nom. Max. Min. Nom. Max. A 0.140 3.56 A 0.020 0. 0.105 0.110 0.115 2.67 2.80 2. 0.026 0.032 0.66 0.81 0.028 0.71 1 0.016 ...
Page 15
... Note: All data and specifications are subject to change without notice. Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Microelectronics Corp. Winbond Systems Lab. 2727 N. First Street, San Jose, CA 95134, U.S.A. TEL: 408-9436666 FAX: 408-5441798 Publication Release Date: May 1997 - 15 - W27E040 Revision A1 ...