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Rev 1 Dec.10 Proprietary and Confidential - Specifications subject to change 73

5.7 Flash LED (LED_FLASH)

This digital output may be used to drive a general purpose LED.

5.7.1 Pin descriptions

Tabl e 5- 1 5 describes the LED signal pin.

See Digital I/O electrical information on page 39 for 1V8 voltage characteristics

and reset state definitions.

5.7.2 Electrical characteristics

Tabl e 5- 1 6 describes the LED_FLASH signal’s electrical characteristics.

Refer to Ta bl e 4 - 2 on page 34 for basic characteristics (type, voltage).

Table 5-14: LED signal features

Feature Details

Purpose Flash LED output

• Used by host to control LED status by controlling LED diode

bias.

Implementation • Digital output. 1.8 V logic

• Source/sink maximum—8 mA

• LED behavior can be configured by adjusting software settings.

• LED pattern can be used to indicate network connection status.

• Blink rate up to 10 Hz supported

Table 5-15: LED_FLASH pin description

Pin Signal I/O I/O type Reset state Description

60 LED_FLASH O Digital output 1 and

Undefined

LED driving

Table 5-16: LED_FLASH signal electrical characteristics

Parameter Condition Minimum Typical Maximum Unit

0.4 V

OUT

8 mA

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 121 122

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Sierra Wireless UMTS Spezifikationen Seite 73