This document describes the features and characteristics of STMicroelectronics' ZEROPOWER® and TIMEKEEPER® supervisor products. These products use surface-mount technology and are suitable for automatic assembly-line processes. They interface directly with commodity SRAM and use a commercially available cell for the internal battery, which is easily replaceable. These devices are designed for lower system costs compared to designs using competitors' hybrid products. Moreover, even though the ST products need an external SRAM chip, the footprint of the two chips together is still 80% of that of the competitors' single chip solutions.
The document introduces the ZEROPOWER and TIMEKEEPER supervisors from STMicroelectronics, specifically models M40Z300W and M48T201V/Y. These devices are designed for surface-mount technology and automatic assembly-line processes, interfacing directly with commodity SRAM and using a commercially available cell for the internal battery.
The combined footprint measures 0.916 by 0.787 inches.
A competitor's single chip solution might have a footprint of 0.965 by 0.930 inches.