S1F87110B0A Epson Electronics America, Inc., S1F87110B0A Datasheet - Page 19

• Manufacturer Part Number: S1F87110B0A
• Description: Led Controller
• Manufacturer: Epson Electronics America, Inc.

7. OPERATIONAL AND FUNCTIONAL DESCRIPTION
7.8 PWM output function
ON/OFF (Hi-Z).
operation mode, as follows.
16
PWM output cycle can be selected with the PWM cycle register (TPWM) settings.
When TPWM=0, PWM cycle=390Hz (Typ.)
When TPWM=1, PWM cycle=195Hz (Typ.)
PWM signal of the S1F87110 is Nch open drain output.
PWM output phase can be inverted with the PWM phase select register (PPWM).
Definition of PWM duty is TLEDON/PWM cycle. At TLEDON, Nch open drain output can be selected from
The S1F87110 can select Nch ON/OFF of PWM output during standby.
PWM output during standby is determined only with this SPWM, regardless of PPWM setting at the
PWM cycle select function
PWM output select function during standby
PWM phase inversion function in the operation mode
Address 02H (D6)
Address 02H (D6)
1 (Default value)
TLEDON
PWM frequency (cycle)
LED ON
SPWM
SPWM
X
X
0
Address 02H (D4)
0 (Default value)
I
I
I
2
2
2
C register
C register
C register
TPWM
LED OFF
1
Address 02H (D5)
Address 02H (D5)
0 (Default value)
PPWM
PPWM
X
X
1
Duty(%)= TLEDON／PWM cycle
Operation mode = automatic luminance control mode
or fixed brightness mode (except standby mode)
LED ON
EPSON
S1F87110B0A Series Technical Manual (Rev.1.0)
LED OFF
PWM output at TLEDON
Nch OFF output (Hi-Z)
Nch OFF output (Hi-Z)
with operation mode
Nch ON output (V
Nch ON output (V
PWM frequency
PWM output in
standby mode
390 (Hz)
195 (Hz)
SS
SS
)
)