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Description
CMOS 8K x 8 TIMEKEEPER SRAM
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The parameters and performance indicators of this product are sourced from the internet. In case of discrepancies, please refer to the manufacturer's technical specifications!！
FEATURES SUMMARY
● INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT, AND BATTERY
● BYTEWIDETM 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 VOLTAGES
(VPFD = Power-fail Deselect Voltage):
– M48T08: VCC = 4.75 to 5.5V
4.5V ≤ VPFD ≤ 4.75V
– M48T18/T08Y: VCC = 4.5 to 5.5V
4.2V ≤ VPFD ≤ 4.5V
● SOFTWARE CONTROLLED CLOCK CALIBRATION FOR HIGH ACCURACY APPLICATIONS
● SELF-CONTAINED BATTERY AND CRYSTAL IN THE CAPHATTM 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 8K x8 SRAMs
● RoHS COMPLIANCE Lead-free components are compliant with the RoHS Directive.
SUMMARY DESCRIPTION
The M48T08/18/08Y TIMEKEEPER RAM is an 8K x 8 non-volatile static RAM and real time clock which is pin and functional compatible with the DS1643. The monolithic chip is available in two special packages to provide a highly integrated battery backed-up memory and real time clock solution.
The M48T08/18/08Y is a non-volatile pin and function equivalent to any JEDEC standard 8K 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, 600mil DIP CAPHATTM houses the M48T08/18/08Y silicon with a quartz crystal and a long- life lithium button cell in a single package.
The 28-pin, 330mil 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 surfacemounting. 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”
Preview of the first 3 pages of the data sheet
| QUANTITY | UNIT PRICE | PLUS UNIT PRICE | TOTAL PRICE |
|---|---|---|---|
| ≥1: | US $20.03040 | US $18.02736 | US $18.02736 |
| ≥5: | US $18.91760 | US $17.02584 | US $85.12920 |
| ≥10: | US $18.36120 | US $16.52508 | US $165.25080 |
| ≥20: | US $17.80480 | US $16.02432 | US $320.48640 |
| ≥50: | US $17.24840 | US $15.52356 | US $776.17800 |
| ≥100: | US $17.02584 | US $15.32326 | US $1532.32600 |
| ≥200: | US $16.69200 | US $15.02280 | US $3004.56000 |
| ≥500: | US $16.46944 | US $14.82250 | US $7411.25000 |
| ≥1000: | US $16.13560 | US $14.52204 | US $14522.04000 |
Substitute (equivalent) Product
| Substitute Product | Description |
|---|---|
| Dallas DS1643 | 64K NV RAM with RTC, suitable for applications requiring a battery-backed SRAM with real-time clock capabilities. |
| Maxim DS1743-120 | 32K NV RAM with RTC, commonly used as a replacement due to similar non-volatile SRAM and RTC functions. |
| ST M48T35-70PC1 | Timekeeper NVRAM, featuring integrated SRAM and RTC, generally used for similar applications as the M48T08. |
| ST M48T18-150PC1 | 16K x 8 NVRAM with integrated RTC, a valid alternative with slightly different memory capacity. |
| Cypress CY14B256K-SP35XI | 256-Kbit (32K x 8) nvSRAM with RTC, offering a larger memory size along with real-time clock features. |
Product Usage
The M48T08-150PC1 is a Timekeeper SRAM (Static Random Access Memory) device manufactured by STMicroelectronics. It integrates a low-power SRAM with a real-time clock (RTC) and an embedded lithium backup battery. This combination makes it useful in various applications that require frequent access to RAM and accurate date/time maintenance during power outages.
Common circuits and applications that use the M48T08-150PC1 include:
Embedded Systems:
Network Equipment:
Industrial Automation:
Telecommunications:
Computing Systems:
Instrumentation:
Consumer Electronics:
Security Systems:
It's important to note that use of this specific part number (M48T08-150PC1) may be largely found in legacy systems, as technology advancements continually bring new alternatives. When considering this component, always verify its availability and compatibility with your specific application.
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| Flag | Country | Estimated Delivery Time | Minimum First Weight Cost | ||
|---|---|---|---|---|---|
| Express | Standard Shipping | Express (0.5kg) | Standard Shipping (0.05kg) | ||
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Returns are normally accepted when completed within 90 days from the date of the parcel delivered.
Defective ( Please provide a third party quality report of nonconforming products)
Return Freight charges must be prepaid; we will not accept COD shipments.
Warranty
All UTSOURCE purchases have a 90 days money back return policy, plus a 100 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
M48T08-150PC1
M48T08-150PC1 has several brands around the world that may have alternate names for M48T08-150PC1 due to regional differences or acquisition. M48T08-150PC1 may also be known as the following names:
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