w27e520 Winbond Electronics Corp America, w27e520 Datasheet

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w27e520

Manufacturer Part Number
w27e520
Description
64k X 8 Electrically Erasable Eprom
Manufacturer
Winbond Electronics Corp America
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
w27e520W-70
Manufacturer:
Quantity:
173
Price:
GENERAL DESCRIPTION
The W27E520 is a high speed, low power Electrically Erasable and Programmable Read Only
Memory organized as 65,536
with the 8 data lines. To cooperate with the MCU, this device could save the external TTL
component, also cost and space. It requires only one supply in the range of 4.5V to 5.5V in normal
read mode. The W27E520 provides an electrical chip erase function. It will be a great convenient
when you need to change/update the contents in the device.
FEATURES
PIN CONFIGURATIONS
+13V erase and programming voltage
High speed access time: 70/90 nS (max.)
Read operating current: 20 mA (max.)
Erase/Programming operating current
30 mA (max.)
Standby current: 100 A (max.)
Unregulated battery power supply range,
4.5V to 5.5V
OE/VPP
OE/VPP
AD0
AD2
AD4
A15
A11
AD6
A13
GND
A15
A13
A10
A12
ALE
A11
A14
V
A9
A9
DD
64K
1
2
3
4
5
6
7
8
9
10
1
9
10
2
3
4
5
6
7
8
Top View
Top View
TSSOP
SOP
8 ELECTRICALLY ERASABLE EPROM
16
11
16
11
20
19
18
17
15
14
13
12
20
19
18
17
15
14
13
12
8 bits. It includes latches for the lower 8 address lines to multiplex
AD0
VDD
AD1
AD3
AD5
AD7
GND
AD4
AD2
ALE
A14
A12
A10
A8
AD3
AD5
AD7
A8
AD6
AD1
- 1 -
BLOCK DIAGRAM
PIN DESCRIPTION
Available p
SOP
High Reliability CMOS Technology
Fully static operation
All inputs and outputs directly TTL/CMOS
compatible
Three-state outputs
AD0 AD7
SYMBOL
A8 A15
OE /V
2K V ESD Protection
200 mA Latchup Immunity
GND
ALE
V
DD
AD7 - AD0
PP
Publication Release Date: September 2000
A15 - A8
OE / V
ackages: 20-pin TSSOP and 20-pin
GND
ALE
V
PP
DD
Address/Data Inputs/Outputs
Address Inputs
Address Latch Enable
Output Enable, Program/Erase
Supply Voltage
Power Supply
Ground
CONTROL
L
A
T
C
H
E
S
DECODER
DESCRIPTION
MEMORY
OUTPUT
ARRAY
W27E520
BUFFER
Revision A2

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w27e520 Summary of contents

Page 1

... To cooperate with the MCU, this device could save the external TTL component, also cost and space. It requires only one supply in the range of 4.5V to 5.5V in normal read mode. The W27E520 provides an electrical chip erase function. It will be a great convenient when you need to change/update the contents in the device. ...

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 W27E520 uses electrical erasure. Generally, the chip can be erased within 100 mS by using an EPROM writer with a special erase algorithm. ...

Page 3

... IH V First command: PE Addr. = 5555 (hex) Second command: Addr. = 2AAA (hex Others = Others = Publication Release Date: September 2000 - 3 - W27E520 ), and DD and GND. The bulk capacitor AD[7: A[7: OUT V High A[7:0] ...

Page 4

... A8 & A11 = A10 = V , Others = and removed simultaneously or after W27E520 RATING UNIT -55 to +125 C -65 to +150 C -2.0 to +7.0 V -2.0 to +7.0 V -2.0 to +7.0 V -2.0 to +14.0 V LIMITS UNIT MIN. TYP. MAX. - -0.3 - ...

Page 5

... AC Test Load and Waveforms D OUT 3V 0V SYMBOL OUT OUT 0V/ 1.5V/1. 100 pF +1.3V (IN914) 3.3K ohm 100 pF (Including Jig and Scope) Input Output Test Points 1.5V 1.5V Publication Release Date: September 2000 - 5 - W27E520 MAX. UNIT CONDITIONS = -0.4 mA/2 Test Points Revision A2 ...

Page 6

... ALE ACC and removed simultaneously or after W27E520 LIMITS UNIT MIN. TYP. MAX 100 -0.6 - 0 0 W27E520-90 UNIT MIN. MAX ...

Page 7

... T 100 LAH T 2 2.0 OES T 2.0 OEH EOE T - POE T 0 DFP T 2 2.0 VR and removed simultaneously or after V PP Publication Release Date: September 2000 - 7 - W27E520 LIMITS UNIT TYP. MAX 12.0 12.5 V 13.0 13.25 V 6.5 6.75 V LIMITS UNIT TYP. MAX. ...

Page 8

... LAS V IH AD[7:0] Add V IL Address Valid T ALE Data Address T ACC PROGRAM Address Stable T T OES OEH PPW LAH Data W27E520 High Z PROGRAM (VERIFY ALE T DFP T POE Add Data out ...

Page 9

... V =6. A[15: A[15: RPT T OES T OEH T VS PRT T ALE T EPW1 T EPW2 T LAH LAS Publication Release Date: September 2000 - 9 - W27E520 Erase (Verify 6.5V DD Address Valid Add D OUT EOE Erase Verify V =6.5V DD Address Valid T EOE 10 Add D OUT Revision A2 ...

Page 10

... Address = First Location V = 6.5V DD OE/Vpp = 13V Program One 50 S Pulse Last Address ? Yes Address = First Location Fail Verify Byte No Program One 50 S Pulse V = 5.0V DD OE/Vpp = V IL Compare Fail All Bytes to Original Data Pass Device Passed - 10 - W27E520 Increment Yes Device Failed ...

Page 11

... Increment X Yes X = 25? No Fail Verify One Byte OE/Vpp = V IL Pass No Last Address ? Yes Power Down V =5.0V DD Fail Compare All Bytes to Original Data Pass Device Passed Publication Release Date: September 2000 - 11 - W27E520 Fail Verify One Byte OE/Vpp = V IL Pass Device Failed Revision A2 ...

Page 12

... A9 = 13V; A8&A11 = V IL A10 = V IH Chip Erase 100 mS Pulse Address = First Location Increment 6.5V DD OE/Vpp = V IL Fail Erase Verify Pass Last Address? Yes Power Down V = 5.0V DD OE/Vpp = V IL Compare Fail All Bytes to FFs (HEX) Pass Pass Device - 12 - W27E520 20? Yes Fail Device ...

Page 13

... Program One 50 S Pulse Program One 100 mS Pulse Increment 6.5V DD OE/Vpp = V IL Fail Erase Verify Pass No Last Address? Yes Power Down V = 5.0V DD OE/Vpp = V IL Compare Fail All Bytes to FFs (HEX) Pass Pass Device Publication Release Date: September 2000 - 13 - W27E520 20? Yes Fail Device Revision A2 ...

Page 14

... 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. OPERATING STANDBY CURRENT CURRENT MAX. (mA) MAX 100 20 100 20 100 20 100 - 14 - W27E520 PACKAGE 173mil TSSOP 173mil TSSOP 300mil SOP 300mil SOP ...

Page 15

... Symbol Publication Release Date: September 2000 - 15 - W27E520 Dimension in Inches Dimension in mm Min. Nom. Max. Min. Nom. Max. 0.043 1.10 0.002 0.05 0.15 0.006 1 0.50 0.020 0.028 0.70 6.40 0.252 0.260 6.60 0.256 0.246 6.25 6.50 4.48 0.169 0.176 4. ...

Page 16

... Kowloon, Hong Kong Winbond Systems Lab. Winbond Systems Lab. TEL: 852-27513100 TEL: 852-27513100 2727 N. First Street, San Jose, 2727 N. First Street, San Jose, FAX: 852-27552064 FAX: 852-27552064 CA 95134, U.S.A. CA 95134, U.S.A. TEL: 408-9436666 TEL: 408-9436666 FAX: 408-5441798 FAX: 408-5441798 - 16 - W27E520 -> ...

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