M27C4002-12XJ1TR STMicroelectronics, M27C4002-12XJ1TR Datasheet - Page 2

• Manufacturer Part Number: M27C4002-12XJ1TR
• Description: 4 Mbit 256Kb x16 UV EPROM and OTP EPROM
• Manufacturer: STMicroelectronics

M27C4002
Figure 2A. DIP Pin Connections
Figure 2C. TSOP Pin Connections
2/16
DQ15
DQ14
DQ13
DQ12
DQ11
DQ10
V CC
DQ9
DQ8
V PP
A10
A11
A12
A13
A14
A15
A16
A17
A9
E
V PP
V SS
Q15
Q14
Q13
Q12
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
G
E
1
10
11
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
M27C4002
M27C4002
(Normal)
AI00728
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
AI01831
40
31
30
21
V CC
A17
A16
A15
A14
A13
A12
A11
A10
A9
V SS
A8
A7
A6
A5
A4
A3
A2
A1
A0
V SS
A8
A7
A6
A5
A4
A3
A2
A1
A0
G
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
V SS
Figure 2B. LCC Pin Connections
Warning: NC = Not Connected.
DEVICE OPERATION
The operating modes of the M27C4002 are listed
in the Operating Modes table. A single power sup-
ply is required in the read mode. All inputs are TTL
levels except for V
Signature.
Read Mode
The M27C4002 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
(t
Data is availableat the output after a delay of t
from the falling edge of G, assuming that E has
been low and the addresses have been stable for
at least t
Standby Mode
The M27C4002 has a standby mode which re-
duces the supply current from 50mA to 100 A. The
M27C4002 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.
AVQV
V SS
Q12
Q11
Q10
NC
Q9
Q8
Q7
Q6
Q5
Q4
) is equalto the delay from E to output (t
12
AVQV
-t
GLQV
pp
.
M27C4002
and 12V on A9 for Electronic
23
1
44
34
AI00729
A13
A12
A11
A10
A9
V SS
NC
A8
A7
A6
A5
ELQV
GLQV
).