Function Description
FUNCTION TABLE
INPUTS
SCLK PCLK /OE /SCLR D
INx
X
X
X
X
↑
X
L
L
H
L
L
L
X
X
X
OUTPUTS
FUNCTON
D
OUTx
L
L
L
Q
xN
NC
L
Z
A LOW level on /SCLR only affects the shift registers
Empty shift register loaded into storage register
Shift register clear. Parallel outputs in high-impedance
OFF-state
Logic high level shifted into shift register stage 0.
Contents of all shift register stages shifted through, e.g.
previous state of stage 6 (internal Qx6’) appears on the
serial output (D
OUTx
)
Contents of shift register stages (internal Qxn’) are
transferred to the storage register and parallel output
stages
Contents of shift register shifted through. Previous
contents of the shift register are transferred to the
storage register and the parallel output stages.
↑
X
L
H
H
Qx6’
NC
X
↑
L
H
X
NC
Qxn’
↑
↑
L
H
X
Qx6’
Qxn’
Notes
H = HIGH voltage level; L = LOW voltage level
↑
= LOW-to-HIGH transition;
↓
= HIGH-to-LOW
Z = high-impedance OFF-state; NC = no change
X = don’t care.
4
MA007A Technical Summary
MEGAWIN
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