M48T18

CMOS 8K x 8 TIMEKEEPER SRAM

SUMMARYDESCRIPTION TheM48T08/18/08YTIMEKEEPER®RAMisan8Kx8non-volatilestaticRAMandrealtimeclockwhichispinandfunctionalcompatiblewiththeDS1643.Themonolithicchipisavailableintwospecialpackagestoprovideahighlyintegratedbatterybacked-upmemoryandrealtimeclo

M48T18

5 V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM; • Integrated ultra low power SRAM, real-time clock, power-fail control circuit, and battery \n• BYTEWIDE™RAM-like clock access \n• BCD coded year, month, day, date, hours, minutes, and seconds \n• Typical clock accuracy of ±1 minute a month, at 25 °C \n• Automatic power-fail chip deselect and WRITE protection \n• WRITE protect VPFD= power-fail deselect voltage): \n •M48T08: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V \n •M48T18/T08Y: VCC= 4.5 to 5.5 V; 4.2 V ≤ VPFD≤ 4.5 V• Software controlled clock calibration for high accuracy applications \n• Self-contained battery and crystal in the CAPHAT™DIP package \n• Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately) \n• SOIC package provides direct connection for a snaphat top which contains the battery and crystal \n• Pin and function compatible with DS1643 and JEDEC standard 8 K x 8 SRAMs \n• RoHS compliant \n •Lead-free second level interconnect;

The M48T08/18/08Y TIMEKEEPER®RAM is an 8 K x 8 non-volatile static RAM and real-time clock which is pin and function compatible with the DS1643. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory and real-time clock solution.\n\n The M48T08/18/08Y is a non-volatile pin and function equivalent to any JEDEC standard 8 K x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed.\n\n The 28-pin, 600 mil DIP CAPHAT™ houses the M48T08/18/08Y silicon with a quartz crystal and a long-life lithium button cell in a single package.\n\n The 28-pin, 330 mil SOIC provides sockets with gold-plated contacts at both ends for direct connection to a separate SNAPHAT® housing containing the battery and crystal. The unique design allows the SNAPHAT®battery package to be mounted on top of the SOIC package after the completion of the surface mount process. Insertion of the SNAPHAT®housing after reflow prevents potential battery and crystal damage due to the high temperatures required for device surface-mounting. The SNAPHAT®housing is keyed to prevent reverse insertion.\n\n The SOIC and battery/crystal packages are shipped separately in plastic anti-static tubes or in tape & reel form. For the 28-lead SOIC, the battery/crystal package (e.g., SNAPHAT®) part number is “M4T28-BR12SH” or “M4T32-BR12SH”.\n\n

M48T18

5V, 64Kbit (8 Kb x 8) TIMEKEEPER짰 SRAM

M48T18

TIMEKEEPER SRAM

M48T18

5 V, 64 Kbit (8 Kb x 8) TIMEKEEPER짰 SRAM

M48T18

5 V, 64 Kbit (8 Kb x 8) TIMEKEEPER짰 SRAM

M48T18-100MH1

CMOS 8K x 8 TIMEKEEPER SRAM

SUMMARYDESCRIPTION TheM48T08/18/08YTIMEKEEPER®RAMisan8Kx8non-volatilestaticRAMandrealtimeclockwhichispinandfunctionalcompatiblewiththeDS1643.Themonolithicchipisavailableintwospecialpackagestoprovideahighlyintegratedbatterybacked-upmemoryandrealtimeclo

M48T18-100MH1TR

CMOS 8K x 8 TIMEKEEPER SRAM

SUMMARYDESCRIPTION TheM48T08/18/08YTIMEKEEPER®RAMisan8Kx8non-volatilestaticRAMandrealtimeclockwhichispinandfunctionalcompatiblewiththeDS1643.Themonolithicchipisavailableintwospecialpackagestoprovideahighlyintegratedbatterybacked-upmemoryandrealtimeclo

M48T18-100PC1

CMOS 8K x 8 TIMEKEEPER SRAM

SUMMARYDESCRIPTION TheM48T08/18/08YTIMEKEEPER®RAMisan8Kx8non-volatilestaticRAMandrealtimeclockwhichispinandfunctionalcompatiblewiththeDS1643.Themonolithicchipisavailableintwospecialpackagestoprovideahighlyintegratedbatterybacked-upmemoryandrealtimeclo

M48T18-100PC1TR

CMOS 8K x 8 TIMEKEEPER SRAM

SUMMARYDESCRIPTION TheM48T08/18/08YTIMEKEEPER®RAMisan8Kx8non-volatilestaticRAMandrealtimeclockwhichispinandfunctionalcompatiblewiththeDS1643.Themonolithicchipisavailableintwospecialpackagestoprovideahighlyintegratedbatterybacked-upmemoryandrealtimeclo