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TMS27C040 Datasheet(PDF) 5 Page - Texas Instruments

Part # TMS27C040
Description  READ-ONLY MEMORIES
PDF  15 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TMS27C040 Datasheet(HTML) 5 Page - Texas Instruments

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TMS27C020 262144 BY 8-BIT UV ERASABLE
TMS27PC020 262144 BY 8-BIT
PROGRAMMABLE READ-ONLY MEMORIES
SMLS020C – NOVEMBER 1990 – REVISED SEPTEMBER 1997
5
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
Start
Address = First Location
VCC = 6.5 V ± 0.25 V, VPP = 13 V ± 0.25 V
Last
Address?
Address = First Location
X = 0
VCC = VPP = 5 V ± 0.5 V
Compare
All Bytes
to Original
Data
Device Passed
Increment Address
Increment
Address
Verify
One Byte
Program One Pulse = tw = 100 µs
X = 10?
X = X + 1
Last
Address?
Device Failed
Pass
No
Yes
Yes
No
Fail
Fail
Pass
No
Program
Mode
Interactive
Mode
Final
Verification
Yes
Program One Pulse = tw = 100 µs
Figure 1. SNAP! Pulse Programming Flowchart



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