M29W400B Datasheet | STMicroelectronics

DESCRIPTION The M29W400 is a non-volatile memory that may be erased electrically at the block or chip level and programmed in-system on a Byte-by-Byteor Wordby-Word basis using only a single 2.7V to 3.6V VCC supply. For Program and Erase operations the necessary high voltages are generated internally. The device can also be programmed in standard programmers. The array matrix organisation allows each block to be erased and reprogrammed without affecting other blocks. Blocks can be protected against programing and erase on programming equipment, November 1999 TSOP48 (N) 12 x 20 mm SO44 (M) FBGA48 (ZA) 8 x 6 solder balls Figure 1. Logic Diagram 18 A0-A17 W E G RP M29W400T M29W400B 15 DQ0-DQ14 DQ15A- 1 BYTE RB AI02065 1/34 This is information on a product still in productionbut not remended for new designs. M29W400T, M29W400B Figure 2A. TSOP Pin Connections A15 A14 A13 A12 A11 A10 A9 A8 NC NC W RP NC NC RB NC A17 A7 A6 A5 A4 A3 A2 A1 1 48 A16 BYTE VSS DQ15A- 1 DQ7 DQ14 DQ6 DQ13 DQ5 DQ12 DQ4 VCC DQ11 DQ3 DQ10 DQ2 DQ9 DQ1 DQ8 DQ0 G VSS E A0 Figure 2B. TSOP Reverse Pin Connections A16 BYTE VSS DQ15A- 1 DQ7 DQ14 DQ6 DQ13 DQ5 DQ12 DQ4 VCC DQ11 DQ3 DQ10 DQ2 DQ9 DQ1 DQ8 DQ0 G VSS E A0 1 48 A15 A14 A13 A12 A11 A10 A9 A8 NC NC W RP NC NC RB NC A17 A7 A6 A5 A4 A3 A2 A1 12 13 M29W400T M29W400B (Normal) 37 36 12 13 M29W400T M29W400B (Reverse) 37 36 AI02066 AI02067 Warning: NC = Not Connected. Warning: NC = Not Connected. Figure 2C. SO Pin Connections Table 1. Signal Names A0-A17 Address Inputs Data Input/Outputs, mand Inputs Data Input/Outputs Data Input/Output or Address Input Chip Enable Output Enable Write Enable Reset / Block Temporary Unprotect Ready/Busy Output Byte/Word Organisation Supply Voltage Ground NC RB A17 A7 A6 A5 A4 A3 A2 A1 A0 E VSS G DQ0 DQ8 DQ1 DQ9 DQ2 DQ10 DQ3...