M48T18-150PC1 Real-Time Clock (RTC) ICs by STMicroelectronics

5 V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM

Status: Active
Series: M48T18
RoHS: Compliant
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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. 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. 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. 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. 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”.

Prices starting from US$23.04


Distributor Starting From Stock
Logo for element14 element14 US$28.21
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Logo for Farnell Farnell US$25.23
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Logo for Newark Electronics Newark Electronics US$28.13
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Logo for Future Electronics Future Electronics US$23.04
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Features

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

Alternative Descriptions

64Kbit 8Kx8 TIMEKEEPER SRAM 5V PCDIP28 | RS
IC, SRAM TIMEKEEPER 64K | Farnell
Ic, Sram Timekeeper 64K | Newark Electronics
M48T18 Series 64 Kb (8 K x 8) 5 V 150 ns Timekeeper« SRAM - PCDIP-28 | Future Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a M48T18-150PC1?

Additional datasheets, footprints and schematics for M48T18-150PC1 are listed on our Part Details page. You can also find images and similar parts to M48T18-150PC1 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for M48T18-150PC1 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view M48T18-150PC1 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does M48T18-150PC1 fall under?

The M48T18-150PC1 is listed under Clocks and Timers > Real-Time Clock (RTC) ICs > RTC - Parallel Interface (Timekeepers).

Can I view similar or alternative parts?

You can view similar parts to M48T18-150PC1 when available in the RTC - Parallel Interface (Timekeepers) range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the M48T18-150PC1 you can contact the distributor directly for product support, shipping queries etc.

Is the M48T18-150PC1 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for M48T18-150PC1 have stock available?

Authorised distributors including RS, element14, Farnell, Newark Electronics and Future Electronics have stock available or on a lead time for M48T18-150PC1.

How do I check stock and lead times for all distributors?

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