产品概述
描述
The M48T128Y TIMEKEEPER®RAM is a 128 Kb x 8 non-volatile static RAM and real-time clock. The special DIP package provides a fully integrated battery-backed memory and real-time clock solution. The M48T128Y directly replaces industry standard 128 Kb x 8 SRAM.
It also provides the non-volatility of Flash without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed. The 32-pin, 600 mil DIP hybrid houses a controller chip, SRAM, quartz crystal, and a long-life lithium button cell in a single package.
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所有功能
- Integrated, ultra low power SRAM, real-time clock, power-fail control circuit, battery, and crystal
- BCD coded year, month, day, date, hours, minutes, and seconds
- Automatic power-fail chip deselect and WRITE protection
- WRITE protect voltage VCC= 4.5 to 5.5 V; 4.1 V ≤ VPFD≤ 4.5 V (VPFD= power-fail deselect voltage)
- 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 the DIP package
- Pin and function compatible with JEDEC standard 128 K x 8 SRAMs
- RoHS compliant
- Lead-free second level interconnect
电路原理图
EDA符号、封装和3D模型
意法半导体 - M48T128Y
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符号
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