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M27C4002-10B1TR Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer M27C4002-10B1TR
Beschreibung 4 Mbit 256Kb x16 UV EPROM and OTP EPROM
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 16 Seiten
M27C4002-10B1TR Datasheet, Funktion
M27C4002
4 Mbit (256Kb x16) UV EPROM and OTP EPROM
5V ± 10% SUPPLY VOLTAGE in READ
OPERATION
FAST ACCESS TIME: 45ns
LOW POWER CONSUMPTION:
– Active Current 70mA at 10MHz
– Standby Current 100µA
PROGRAMMING VOLTAGE: 12.75V ± 0.25V
PROGRAMMING TIME: 100µs/byte (typical)
ELECTRONIC SIGNATURE
– Manufacturer Code: 0020h
– Device Code: 0044h
DESCRIPTION
The M27C4002 is a 4 Mbit EPROM offered in the
two ranges UV (ultra violet erase) and OTP (one
time programmable). It is ideally suited for micro-
processor systems requiring large programs and is
organised as 262,144 words of 16 bits.
The FDIP40W (window ceramic frit-seal package)
and the JLCC44W (J-lead chip carrier packages)
have transparent lids which allow the user to ex-
pose the chip to ultraviolet light to erase the bit
pattern. A new pattern can then be written to the
device by following the programming procedure.
For applications where the content is programmed
only one time and erasure is not required, the
M27C4002 is offered in PDIP40, PLCC44 and
TSOP40 (10 x 20 mm) packages.
Table 1. Signal Names
A0-A17
Address Inputs
Q0-Q15
Data Outputs
E Chip Enable
G Output Enable
VPP Program Supply
VCC Supply Voltage
VSS Ground
40
1
FDIP40W (F)
40
1
PDIP40 (B)
JLCC44W (J)
PLCC44 (C)
TSOP40 (N)
10 x 20 mm
Figure 1. Logic Diagram
VCC VPP
18
A0-A17
16
Q0-Q15
E M27C4002
G
VSS
AI00727B
September 1998
1/16






M27C4002-10B1TR Datasheet, Funktion
M27C4002
Table 8B. Read Mode AC Characteristics (1)
(TA = 0 to 70 °C or –40 to 85 °C; VCC = 5V ± 5% or 5V ± 10%; VPP = VCC)
Symbol Alt
Parameter
Test
Condition
-10
M27C4002
-12 -15
Unit
-20
Min Max Min Max Min Max Min Max
tAVQV
tELQV
tACC
Address Valid to
Output Valid
tCE
Chip Enable Low
to Output Valid
E = VIL,
G = VIL
G = VIL
100 120 150 200 ns
100 120 150 200 ns
tGLQV
Output Enable
tOE Low to Output
Valid
E = VIL
50 60 60 70 ns
tEHQZ (2)
tDF
Chip Enable High
to Output Hi-Z
G = VIL
0 30 0 40 0 50 0 80 ns
Output Enable
tGHQZ (2) tDF High to Output
Hi-Z
E = VIL
0 30 0 40 0 50 0 80 ns
tAXQX
Address
tOH Transition to
Output Transition
E = VIL,
G = VIL
0
0
0
0 ns
Figure 5. Read Mode AC Waveforms
A0-A17
E
G
Q0-Q15
VALID
tAVQV
tGLQV
tELQV
tAXQX
VALID
tEHQZ
tGHQZ
Hi-Z
AI00731B
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27C4002 are in the ’1’
state. Data is introduced by selectively program-
ming ’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 only way to
change a ’0’ to a ’1’ is by die exposure to ultraviolet
light (UV EPROM). The M27C4002 is in the pro-
gramming mode when VPP input is at 12.75V, G is
at VIH and E is pulsed to VIL. The data to be
programmed is applied to 16 bits in parallel to the
data output pins. The levels required for the ad-
dress and data inputs are TTL. VCC is specified to
be 6.25V ± 0.25V.
6/16

6 Page









M27C4002-10B1TR pdf, datenblatt
M27C4002
Symb
A
A1
A2
B
B1
C
D
D2
E
E1
e1
eA
eB
L
S
α
N
PDIP40 - 40 pin Plastic DIP, 600 mils width
Typ
4.45
0.64
48.26
2.54
15.24
mm
Min
0.38
3.56
0.38
1.14
0.20
51.78
14.80
13.46
15.24
3.05
1.52
0°
40
Max
3.91
0.53
1.78
0.31
52.58
16.26
13.99
17.78
3.81
2.29
15°
Typ
0.175
0.025
1.900
0.100
0.600
inches
Min
0.015
0.140
0.015
0.045
0.008
2.039
0.583
0.530
0.600
0.120
0.060
40
Max
0.154
0.021
0.070
0.012
2.070
0.640
0.551
0.700
0.150
0.090
15É
B1 B
D2
S
N
D
1
A2 A
A1 L
e1
E1 E
Drawing is not to scale.
12/16
α
C
eA
eB
PDIP

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