Datasheet

Operation M48T201Y, M48T201V
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Note: Most low power SRAMs on the market today can be used with the M48T201Y/V
TIMEKEEPER
®
SUPERVISOR. There are, however some criteria which should be used in
making the final choice of an SRAM to use.
The SRAM must be designed in a way where the chip enable input disables all other inputs
to the SRAM. This allows inputs to the M48T201Y/V and SRAMs to be “Don't care” once
V
CC
falls below V
PFD
(min). The SRAM should also guarantee data retention down to
V
CC
= 2.0 V. The chip enable access time must be sufficient to meet the system needs with
the chip enable (and output enable) output propagation delays included.