STMicroelectronics M27C405
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.| Part No. | M27C405 |
|---|---|
| Datasheet | M27C405 Download |
| Manufacturer |  STMicroelectronics |
| Description | 4 Mbit 512Kb x 8 OTP EPROM |
| Buy | Stock & Price |
DESCRIPTION
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 VCC VPP 19 A0-A18 8 Q0-Q7 E M27C405 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 G VSS AI01601 1/15 M27C405 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 17 AI01602 VCC VPP A17 A14 A13 A8 A9 A11 G A10 E Q7 Q6 Q5 Q4 Q3 A7 A6 A5 A4 A3 A2 A1 A0 Q0 A12 A15 A16 A18 VCC VPP A17 1 32 A14 A13 A8 A9 A11 G A10 E Q7 9 M27C405 25 17 Q1 Q2 VSS Q3 Q4 Q5 Q6 AI01603 Figure 2C. TSOP Pin Connections A11 A9 A8 A13 A14 A17 VPP VCC A18 A16 A15 A12 A7 A6 A5 A4 1 32 8 9 M27C405 (Normal) 25 24 16 17 AI01604 G A10 E Q7 Q6 Q5 Q4 Q3 VSS Q2 Q1 Q0 A0 A1 A2 A3 DEVICE OPERATION The modesof operationsof theM27C405 are listed in the Operating Modes table.
