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M27W512-100K6 数据表(PDF) 9 Page - STMicroelectronics

部件名 M27W512-100K6
功能描述  512 Kbit (64 Kbit x8) low-voltage OTP EPROM
Download  22 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M27W512-100K6 数据表(HTML) 9 Page - STMicroelectronics

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M27W512
Device operation
9/22
Figure 3.
Programming flowchart
2.5
Programming
The M27W512 has been designed to be fully compatible with the M27C512 and has the
same electronic signature. As a result, the M27W512 can be programmed as the M27C512
on the same programming equipment applying 12.75V on VPP and 6.25V on VCC. The
M27W512 can use PRESTO IIB Programming Algorithm that drastically reduces the
programming time. Nevertheless to achieve compatibility with all programming equipment,
PRESTO II Programming Algorithm can be used as well. When delivered, all bits of the
M27W512 are in the '1' state. Data is introduced by selectively programming '0's into the
desired bit locations. Although only '0's will be programmed, both '1's and '0's can be
present in the data word. The M27W512 is in the programming mode when VPP input is at
12.75V and E is pulsed to VIL. The data to be programmed is applied to 8 bits in parallel to
the data output pins. The levels required for the address and data inputs are TTL. VCC is
specified to be 6.25V ± 0.25V.
AI00738C
n = 0
Last
Addr
VERIFY
E = 100
μs Pulse
++n
= 25
++ Addr
VCC = 6.25V, VPP = 12.75V
FAIL
CHECK ALL BYTES
1st: VCC = 5V
2nd: VCC = 2.7V
YES
NO
YES
NO
YES
NO
SET MARGIN MODE
RESET MARGIN MODE


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