M27C405 Datasheet, PDF (1/15 Pages) STMicroelectronics – 4 Mbit 512Kb x 8 OTP EPROM

M27C405
4 Mbit (512Kb x 8) OTP EPROM
5V ± 10% SUPPLY VOLTAGE in READ
OPERATION
PIN COMPATIBLE with the 4 Mbit,
SINGLE VOLTAGE FLASH MEMORY
FAST ACCESS TIME: 70ns
LOW POWER CONSUMPTION:
– Active Current 30mA at 5MHz
– Standby Current 100µA
PROGRAMMING VOLTAGE: 12.75V ± 0.25V
PROGRAMMING TIMES
– Typical 48sec. (PRESTO II Algorithm)
– Typical 27sec. (On-Board Programming)
ELECTRONIC SIGNATURE
– Manufacturer Code: 20h
– Device Code: B4
32
1
PDIP32 (B)
PLCC32 (K)
TSOP32 (N)
8 x 20mm
DESCRIPTION
The M27C405 is a 4 Mbit EPROM offered in the
OTP (one time programmable) range. It is ideally
suited for microprocessor systems requiring large
programs, in the application where the contents is
stable and needs to be programmed only one time
and is organised as 524,288 by 8 bits.
The M27C405 is pin compatible with the industry
standard 4 Mbit, single voltage Flash memory. It
can be consideredas a Flash Low Cost solution for
production quantities.
The M27C405 is offered in PDIP32, PLCC32 and
TSOP32 (8 x 20 mm) packages.
Table 1. Signal Names
A0-A18
Address Inputs
Q0-Q7
E
Data Outputs
Chip Enable
G
Output Enable
V_PP
Program Supply
V_CC
Supply Voltage
V_SS
Ground
Figure 1. Logic Diagram
VCC VPP
19
A0-A18
8
Q0-Q7
E
M27C405
G
VSS
AI01601
March 1999
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