STLED325QTR STMicroelectronics, STLED325QTR Datasheet - Page 54

• 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

State
8
8.1
8.2
54/62
State
Default state upon power-up
Table below shows the default state of the STLED325 upon power-up.
Table 30.
Initial state
On power application, the 10/16-pulse width is set and the display shows the value
configured in the LED display RAM before entering the standby mode. Thus if TUNE is
required to be shown on the LED upon wake-up, then the user must write the corresponding
digit and segments locations in the LED display memory before going into the standby mode
of operation. The value of the display changes only after user configuration.
If the user wishes to display the RTC value during standby, then the user must configure the
STLED325 by sending the appropriate command. If the user does not configure the
STLED325 to display the RTC in standby, the LED shows the same value as was written
previously in the LED display memory location.
Note that all the hot keys are disabled on power-up. Only the hot-keys (FP or RC) can be
detected to wake-up the system from standby condition.
Serial number
Power-up defaults
1
2
3
4
5
6
7
8
9
Doc ID 17576 Rev 1
Display
Key-scan
IR
Display mode
Display address
RC protocol
Dimming
Hot keys (IR and FP)
Guard timer
Function
OFF
ON
Disabled
8 segment/1 digit
10H with address increment
mode
Disabled
10/16 duty factor
Disabled
10s
Default state
STLED325