M27V405 View Datasheet(PDF) - STMicroelectronics
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M27V405 Datasheet PDF : 13 Pages
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M27V405
4 Mbit (512Kb x 8) Low Voltage OTP EPROM
s LOW VOLTAGE READ OPERATION:
3V to 3.6V
s FAST ACCESS TIME: 120ns
s LOW POWER CONSUMPTION:
– Active Current 15mA at 5MHz
– Standby Current 20µA
s PROGRAMMING VOLTAGE: 12.75V ± 0.25V
s PROGRAMMING TIMES:
– Typical 48sec. (PRESTO II Algorithm)
– Typical 27sec. (On-Board Programming)
s PIN COMPATIBLE with the 4 Mbit,
Single Voltage Flash Memory
s ELECTRONIC SIGNATURE
– Manufacturer Code: 20h
– Device Code: B4
DESCRIPTION
The M27V405 is a low voltage 4 Mbit EPROM of-
fered in the OTP range (one time programmable).
It is ideally suited for microprocessor systems re-
quiring large data or program storage and is orga-
nised as 524,288 by 8 bits.
The M27V405 operates in the read mode with a
supply voltage as low as 3V. The decrease in op-
erating power allows either a reduction of the size
of the battery or an increase in the time between
battery recharges.
Table 1. Signal Names
A0-A18
Address Inputs
Q0-Q7
Data Outputs
E
Chip Enable
G
Output Enable
VPP
Program Supply
VCC
Supply Voltage
VSS
Ground
PLCC32 (K)
TSOP32 (N)
8 x 20 mm
Figure 1. Logic Diagram
VCC VPP
19
A0-A18
8
Q0-Q7
E
M27V405
G
VSS
AI01800
May 1998
1/13
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