M27C405
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 patible 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.
Figure 1. Logic Diagram
19 A0-A18
8 Q0-Q7
Table 1. Signal Names
A0-A18 Q0-Q7 E G VPP VCC VSS March 1999 Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground
AI01601
1/15
Figure 2A. DIP Pin Connections Figure 2B. LCC Pin Connections
A18 A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 Q0 Q1 Q2 VSS
1 32 2 31 3 30 4 29 5 28 6 27 7 26 8 25 M27C405 9 24 10 23 11 22 12 21 13 20 14 19 15 18 16...
