m48t201y STMicroelectronics, m48t201y Datasheet - Page 16

• Manufacturer Part Number: m48t201y
• Description: 3.3v-5v Timekeeper Controller
• Manufacturer: STMicroelectronics

Operation
Note:
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Most low power SRAMs on the market today can be used with the M48T201Y/V
TIMEKEEPER
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
V
the chip enable (and output enable) output propagation delays included.
CC
CC
falls below V
= 2.0 V. The chip enable access time must be sufficient to meet the system needs with
®
SUPERVISOR. There are, however some criteria which should be used in
PFD
(min). The SRAM should also guarantee data retention down to
M48T201Y, M48T201V