M27C2001-70F1(1995) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
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M27C2001-70F1 Datasheet PDF : 14 Pages
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M27C2001
Figure 2A. DIP Pin Connections
VPP
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
Q0
Q1
Q2
VSS
1
32
2
31
3
30
4
29
5
28
6
27
7
26
8
25
9 M27C2001 24
10
23
11
22
12
21
13
20
14
19
15
18
16
17
VCC
P
A17
A14
A13
A8
A9
A11
G
A10
E
Q7
Q6
Q5
Q4
Q3
AI00717
Figure 2B. LCC Pin Connections
A7
A6
A5
A4
A3 9
A2
A1
A0
Q0
1 32
M27C2001
17
A14
A13
A8
A9
25 A11
G
A10
E
Q7
AI00718
Figure 2C. TSOP Pin Connections
A11
A9
A8
A13
A14
A17
P
VCC
VPP
A16
A15
A12
A7
A6
A5
A4
1
32
8 M27C2001 25
9 (Normal) 24
16
17
AI01153B
G
A10
E
Q7
Q6
Q5
Q4
Q3
VSS
Q2
Q1
Q0
A0
A1
A2
A3
2/14
DEVICE OPERATION
The modes of operations of the M27C2001 are
listed in the Operating Modes table. A single 5V
power supply is required in the read mode. All
inputs are TTL levels except for Vpp and 12V on A9
for Electronic Signature.
Read Mode
The M27C2001 has two control functions, both of
which must be logically active in order to obtain
data at the outputs. Chip Enable (E) is the power
control and should be used for device selection.
Output Enable (G) is the output control and should
be used to gate data to the output pins, inde-
pendent of device selection. Assuming that the
addresses are stable, the address access time
(tAVQV) is equal to the delay from E to output (tELQV).
Data is available at the output after a delay of tGLQV
from the falling edge of G, assuming that E has
been low and the addresses have been stable for
at least tAVQV-tGLQV.
Standby Mode
The M27C2001 has a standby mode which re-
duces the active current from 30mA to 100ยตA. The
M27C2001 is placed in the standby mode by ap-
plying a CMOS high signal to the E input. When in
the standby mode, the outputs are in a high imped-
ance state, independent of the G input.
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