STLED325QTR STMicroelectronics, STLED325QTR Datasheet - Page 18

• Manufacturer Part Number: STLED325QTR
• Description: LED Lighting Drivers I2C interfaced LED controller/driver
• Manufacturer: STMicroelectronics

Specifications of STLED325QTR

• Product Category: LED Lighting Drivers
• Rohs: yes
• Input Voltage: 5 V
• Maximum Supply Current: 2 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 40 C
• Power Dissipation: 1200 mW

Functional description
3.10.3
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Wake-up
The STLED325 can wake-up from any one of the following sources:
Figure 7.
The guard timer is thus triggered by a de-assertion of the STBY signal or by internal power
on reset signal.
– Front-panel keys
– Remote-control keys
– Real time clock (RTC) in 3 conditions (alarm, watchdog timer, oscillator fail)
– External wake-up pin (by a low to high transition on this pin)
– GPIO status changes
– READY pin goes from low to high
– When the hot-key is detected either from front-panel or remote control or RTC or from
– The de-assertion of the STBY triggers the guard timer.
– The timer value is the programmed value by the user (1-15s). If the user did not
– Also note that the guard timer is off when the STLED325 is in the standby mode.
a transition (low to high transition) on WAKE_UP pin during stand-by, the STBY pin
de-asserts.
change the value before entering standby, then it remains 10s.
or Key pad or RTC or WAKE_UP for wake up
or Key pad or RTC or WAKE_UP for wake up
Standby condition (normal behavior)
Hot key command from IR
Hot key command from IR
3b) Standby condition (abnormal behavior , processor is not responding)
3a) Standby condition (normal behavior )
READY
MUTE
Doc ID 17576 Rev 1
STBY
READY
MUTE
STBY
READY asserts within programmed timer value (1s-15s)
Guard timer
triggers
Guard timer triggers
guard timer count is over
Signals STBY after
READY continues to remain low
STLED325