Pin Description - Epson S1F76680 Technical Manual

6. PIN DESCRIPTION

(1) Power Supply Pin
Pin Name
(2) Input pin
Pin Name
S1F76680 Technical Manual (Rev.1.22)
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PIN No.
(QFN5-32)
V 32 Power supply pin.
DD1
V 13
Supply voltage that obtains V
DD2
Since V
capacitor CV
V 7 Power supply pin for I
DDL
Supply voltage that obtains V
Connect a bypass capacitor CV
V 26 Ground pin.
SS1
V 5
SS2
V 22
SS3
1
PIN No.
(QFN5-32)
EN1 17 Input pin for activating IC. It is pulled down internally.
This IC is set to the standby mode as EN1=L is selected.Whenever starting this IC
from the standby mode, change the state of EN1 from L to H. When EN1=L, too, also
allows input to and output from I
setting of the EN2 pin to be described later or I
No.P22)Setting of EN2 (SEN)-L, in which the standby current value is reduce, is
recommended for the standby mode.
EN1 (with pull-down)
EN2 8 Input pin that selects activation/stop state for the automatic luminance control circuit.
It is pulled down internally.
The automatic luminance control circuit operates based on the setting of this EN2 pin
or that of I
If you do not select the operating state of the automatic luminance control circuit with
the EN2 pin, fix EN2 pin to LOW, and select the operating state with I
(SEN2).
EN2 (with pull-down)
EN3 4 Forced full lighting select pin.
It is pulled down internally.
Fix EN3 pin to LOW when activating automatic luminance control.
If EN3 pin is fixed to HIGH, LED will light at maximum luminance regardless of the
setting of EN2.
EN3 (with pull-down)
Function
= V
DD1 DD2
is a power supply pin for the charge pump circuit, connect a bypass
DD1
immediately next to the V
DD
2
C I/O signal interface.
= V
DD1 DD2
immediately next to V
DDL
Function
2
C circuit.The standby current value depends on the
L
H
2
C register (SEN2), which will be explained later.
L Automatic luminance control circuit stop state
H Automatic luminance control circuit activated state
L Automatic luminance control mode
H
EPSON
6. PIN DESCRIPTION
≥ V
.
DDL
pin.
DD1
≥ V
.
DDL
pin.
DDL
2
C register (SEN2). (See
Function
Standby state
Circuit operating state
Function
Function
Forced full lighting mode
2
C register
5