6277 Просмотр технического описания (PDF) - Allegro MicroSystems
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6277 Datasheet PDF : 12 Pages
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6277
8-BIT SERIAL-INPUT,
CONSTANT-CURRENT
LATCHED LED DRIVER
VDD
IN
VDD
IN
Dwg. EP-010-6
OUTPUT ENABLE (active low)
VDD
IN
Dwg. EP-010-7
LATCH ENABLE and HIGH/LOW
VDD
OUT
Dwg. EP-010-5
CLOCK and SERIAL DATA IN
Dwg. EP-063-1
SERIAL DATA OUT
TRUTH TABLE
Serial
Shift Register Contents
Data Clock
Input Input I1 I2 I3 ... IN-1 IN
Serial Latch
Latch Contents
Output
Data Enable
Enable
Output Input I1 I2 I3 ... IN-1 IN Input
Output Contents
I1 I2 I3 ... IN-1 IN
H
H R1 R2 ... RN-2 RN-1 RN-1
L
L R1 R2 ... RN-2 RN-1 RN-1
X
R1 R2 R3 ... RN-1 RN
RN
X X X ... X X
X
L
R1 R2 R3 ... RN-1 RN
P1 P2 P3 ... PN-1 PN
PN
H
P1 P2 P3 ... PN-1 PN
L
P1 P2 P3 ... PN-1 PN
X X X ... X X
H
H H H ... H H
L = Low Logic (Voltage) Level H = High Logic (Voltage) Level X = Irrelevant P = Present State R = Previous State
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