FM1110 Datasheet, PDF (2/8 Pages) Ramtron International Corporation – Nonvolatile 5V Quad State Saver

Block Diagram and Truth Table
D_N
NV
Q_N
State
CLK
Saver
EN
FM1110 NV Quad State Saver
INPUTS
OUTPUT
EN CLK D_N
Q_N
H
↑
L
L
H
↑
H
H
H H or L X
L XX
Q₀
Hi-Z
L Low voltage level
H High voltage level
X Don’t Care
↑ CLK rising edge
Q₀ Previous output state before CLK ↑
Pin Descriptions
Pin Name
D(3:0)
Q(3:0)
CLK
I/O
I
O
I
EN
I
VDD
VSS
Supply
Supply
Description
Data inputs
Data outputs
Clock: On a rising edge of CLK, the D_N inputs are transferred to the Q_N outputs. While
CLK is high or low, the Q_N outputs do not change regardless of the state of the data
inputs. See truth table.
Enable. This active-high input enables the device. When low, inputs are ignored and
updates to the nonvolatile cells are prevented. When high, the device operates
normally.
Power Supply (4.5V to 5.5V)
Ground
Rev. 1.0
Aug. 2007
Page 2 of 8