M2764A-2F1 STMicroelectronics, M2764A-2F1 Datasheet - Page 7
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M2764A-2F1
Manufacturer Part Number
M2764A-2F1
Description
Manufacturer
STMicroelectronics
Datasheet
1.M2764A-2F1.pdf
(10 pages)
Specifications of M2764A-2F1
Organization
8Kx8
Interface Type
Parallel
In System Programmable
In System/External
Access Time (max)
200ns
Package Type
CFDIPWA
Reprogramming Technique
UV
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Supply Current
75mA
Pin Count
28
Mounting
Through Hole
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M2764A-2F1
Manufacturer:
ST
Quantity:
5 704
Part Number:
M2764A-2F1
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
M2764A-2F1PGN-12.5V
Manufacturer:
NEC
Quantity:
5
Part Number:
M2764A-2F1PGN-12.5V
Manufacturer:
ST
Quantity:
20 000
Figure 6. Programming and Verify Modes AC Waveforms
Figure 7. Fast Programming Flowchart
YES
NO
FAIL
> 25
++n
V CC
A0-A12
Q0-Q7
V PP
E
P
G
V CC = 6V, V PP = 12.5V
CHECK ALL BYTES
P = 3ms Pulse by n
V CC = 5V, V PP 5V
NO
P = 1ms Pulse
VERIFY
n = 1
Addr
Last
YES
YES
tVCHPL
tVPHPL
NO
tQVPL
tAVPL
tELPL
tPLPH
++ Addr
DATA IN
PROGRAM
AI00775B
VALID
tPHQX
DEVICE OPERATION (cont’d)
been successfully programmed. A flowchart of the
M2764A Fast Programming Algorithm is shown on
the last page. The Fast Programming Algorithm
utilizes two different pulse types: initial and over-
program.
The duration of the initial P pulse(s) is 1ms, which
will then be followed by a longer overprogram pulse
of length 3ms by n (n is equal to the number of the
initial one millisecond pulses applied to a particular
M2764A location), before a correct verify occurs.
Up to 25 one-millisecond pulses per byte are pro-
vided for before the overprogram pulse is applied.
The entire sequence of program pulses and byte
verifications is performed at V
12.5V. When the Fast Programming cycle has been
completed, all bytes should be compared to the
original data with V
Program Inhibit
Programming of multiple M2764A in parallel with
different data is also easily accomplished. Except
for E, all like inputs (including G) of the parallel
M2764A may be common. A TTL low pulse applied
to a M2764A’s E input, with V
program that M2764A. A high level E input inhibits
the other M2764As from being programmed.
tQXGL
VERIFY
tGLQV
DATA OUT
CC
= 5V and V
tGHQZ
tGHAX
CC
AI00779
PP
PP
= 6V and V
at 12.5V, will
= 5V.
M2764A
PP
7/10
=