FM1114 NV Quad State Saver
Description
Use of Enable Pin
Nonvolatile storage applied to logic is
a
The FM1114 has an enable pin that is intended to be
used in conjunction with a system reset. An active-
low reset may be tied directly to the EN pin. At
power-up, /RESET will be held low for some time
during which the data input and CLK pins will be
ignored. Once the system comes out of reset and EN
goes high, the outputs QN drive to the state that were
previously latched and the device operates normally.
When the EN pin is low, the outputs QN are tri-
stated.
revolutionary concept. The FM1114 simplifies the
design of system control functions. This product is
unique because it remembers the stored output
values in the absence of power. Any change in the
latched state is automatically written to a nonvolatile
ferroelectric latch. This function is possible due to
the fast write time and extremely high write
endurance of the underlying ferroelectric memory
technology.
The enable pin must not be tied to VDD because the
device does not have any power management circuits
to monitor VDD. The enable input must be held low
during power cycles.
Rev. 1.1
Aug. 2007
Page 3 of 8
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
