M27C4002
4 Mbit (256Kb x16) UV EPROM and OTP EPROM
September 1998 1/16
AI00727B
18
A0-A17 Q0-Q15
V
PP
V
CC
M27C4002
V
SS
16
G
E
Figure 1. Logic Diagram
5V ± 10% SUPPLY VOLTAGE in READ
OPERATION
FASTACCESS 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
– ManufacturerCode: 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-
processorsystems requiring large programsand 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.
A0-A17 Address Inputs
Q0-Q15 Data Outputs
E Chip Enable
G Output Enable
V
PP
Program Supply
V
CC
Supply Voltage
V
SS
Ground
Table 1. Signal Names
1
40
FDIP40W (F)
TSOP40 (N)
10 x 20 mm
PLCC44 (C)
1
40
PDIP40 (B)
JLCC44W (J)