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M27C322-80B1 データシート(PDF) 9 Page - STMicroelectronics

部品番号 M27C322-80B1
部品情報  32 Mbit (2Mb x16) UV EPROM and OTP EPROM
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M27C322-80B1 データシート(HTML) 9 Page - STMicroelectronics

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M27C322
Device operation
9/24
Figure 3.
Programming Flowchart
2.7
Program Inhibit
Programming of multiple M27C322s in parallel with different data is also easily
accomplished. Except for E, all like inputs including GVPP of the parallel M27C322 may be
common. A TTL low level pulse applied to a M27C322's E input and VPP at 12V, will
program that M27C322. A high level E input inhibits the other M27C322s from being
programmed.
2.8
Program Verify
A verify (read) should be performed on the programmed bits to determine that they were
correctly programmed. The verify is accomplished with GVPP at VIL. Data should be verified
with tELQV after the falling edge of E.
AI02206
n = 0
Last
Addr
VERIFY
E = 50
µs Pulse
++n
= 25
++ Addr
VCC = 6.25V, VPP = 12V
FAIL
CHECK ALL WORDS
1st: VCC = 6V
2nd: VCC = 4.2V
YES
NO
YES
NO
YES
NO
SET MARGIN MODE
RESET MARGIN MODE


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