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| M48T513Y M48T513V 3.3V-5V 4 Mb (512K x 8) TIMEKEEPER(R) SRAM PRELIMINARY DATA INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT, BATTERY and CRYSTAL YEAR 2000 COMPLIANT-CENTURY REGISTER BCD CODED YEAR, MONTH, DAY, DATE, HOURS, MINUTES and SECONDS BATTERY LOW WARNING FLAG AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage): - M48T513Y: 4.20V VPFD 4.50V - M48T513V: 2.70V VPFD 3.00V CONVENTIONAL SRAM OPERATION; UNLIMITED WRITE CYCLES SOFTWARE CONTROLLED CLOCK CALIBRATION for HIGH ACCURACY APPLICATIONS 10 YEARS of DATA RETENTION and CLOCK OPERATION in the ABSENCE of POWER SELF-CONTAINED BATTERY and CRYSTAL in DIP PACKAGE MICROPROCESSOR POWER-ON RESET (Valid even during battery back-up mode) PROGRAMMABLE ALARM OUTPUT ACTIVE in the BATTERY BACK-UP MODE DESCRIPTION The M48T513Y/513V TIMEKEEPER(R) RAM is a non-volatile 4,194,304 bit static RAM and real time clock organized as 524,288 words by 8 bits. System integration features include Programmable Alarms, Battery Low status Flag and a Power-on Reset. The special 36-pin DIP package provides a highly integrated battery back-up memory and real time clock solution. The memory locations providing user accessible BYTEWIDETM clock information are in the bytes with addresses 7FF1h and 7FF9h-7FFFh. These clock locations contain the century, year, month, date, day, hour, minute and second in 24 hour BCD format. Corrections for 28, 29 (leap year, including year 2000), 30, and 31 day months are made automatically. Reference the M48T201 data sheet for complete register map. May 1998 36 1 PMLDIP36 (PL) Module Logic Diagram VCC 19 A0-A18 W E G WDI RSTIN M48T513Y M48T513V 8 DQ0-DQ7 RST IRQ/FT VSS AI02308 1/4 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. M48T513Y, M48T513V DIP Pin Connections Ordering Information Scheme For a list of available options or for further information on any aspect of this device, please contact the STMicroelectronics Sales Office nearest to you. Example: RST RSTIN A18 A16 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS 1 36 2 35 3 34 4 33 32 5 31 6 30 7 29 8 M48T513Y 9 M48T513V 28 27 10 26 11 25 12 24 13 23 14 22 15 21 16 20 17 19 18 AI02307 M48T513Y -70 PL 1 VCC WDI IRQ/FT A15 A17 W A13 A8 A9 A11 G A10 E DQ7 DQ6 DQ5 DQ4 DQ3 Supply Voltage and Write Protect Voltage 513Y VCC = 4.50V to 5.50V VPFD = 4.20V to 4.50V 513V VCC = 3.00V to 3.60V VPFD = 2.70V to 3.00V Speed -70 -85 70ns (M48T513Y) 85ns (M48T513V) Package PL PMLDIP36 Temperature Range 1 0 to 70 C Signal Names A0-A18 DQ0-DQ7 E G W WDI RST RSTIN IRQ/FT VCC VSS Address Inputs Data Inputs / Outputs Chip Enable Input Output Enable Input Write Enable Input Watchdog input Reset Output (open drain) Reset Input Interrupt / Frequency Test Output (open drain) Supply Voltage Ground 2/4 M48T513Y, M48T513V PMLDIP36 - 36 pin Plastic DIP Module Symb Typ A A1 B C D E e1 e3 eA L S N mm Min 9.27 0.38 0.43 0.20 52.58 18.03 2.30 38.86 14.99 3.05 4.45 36 Max 9.52 - 0.59 0.33 53.34 18.80 2.81 47.50 16.00 3.81 5.33 Typ inches Min 0.365 0.015 0.017 0.008 2.070 0.710 0.090 1.530 0.590 0.120 0.175 36 Max 0.375 - 0.023 0.013 2.100 0.740 0.110 1.870 0.630 0.150 0.210 A A1 S B e3 D e1 L eA C N E 1 PMDIP Drawing is not to scale. 3/4 M48T513Y, M48T513V Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) 1998 STMicroelectronics - All Rights Reserved (R) TIMEKEEPER is a registered trademark of STMicroelectronics TM BYTEWIDE is a trademark of STMicroelectronics STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 4/4 |
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