DESCRIPTION
A special 28 pin 600mil DIP CAPHAT™ package houses the M48Z09,19 silicon with a long life lithium button cell to form a highly integrated battery backed-up memory solution. Table 1. Signal Names E1 A0-A12 DQ0-DQ7 INT E1 E2 G W VCC VSS November 1994 Address Inputs Data Inputs / Outputs Power Fail Interrupt Chip Enable 1 Chip Enable 2 Output Enable Write Enable Supply Voltage Ground 1/13 28 1 PCDIP28 (PC) Battery CAPHAT Figure 1. Logic Diagram VCC 13 A0-A12 8 DQ0-DQ7 W M48Z09 M48Z19 INT E2 G VSS AI01184 M48Z09, M48Z19 Table 2. ABSOLUTE MAXIMUM RATINGS
Symbol TA TSTG VIO VCC IO PD Parameter Ambient Operating Temperature Storage Temperature (VCC Off) Input or Output Voltages Supply Voltage Output Current Power Dissipation Value 0 to 70 –40 to 85 –0.3 to 7 –0.3 to 7 20 1 Unit °C °C V V mA W Note: Stresses greater than those listed under "ABSOLUTE MAXIMUM RATINGS
" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied.
STMicroelectronics
