Sony Ericsson GM47, GM48 manual ON/OFF timing and VIO performance, Times are defined as follows

2. SYSTEM CONNECTOR INTERFACE

The following timing diagram illustrates both power-up and power- down processes.

Module on	Module off
t1	t2

ON/OFF

tpwr

VIO

Module powered

Module power-up Module power-down

Figure 2.2 ON/OFF timing and VIO performance

Times are defined as follows:

Time	Description	Min.	Typ.	Max. Units
t1	Turn-on pulse time	≥2		s

t2

tpwr

Turn-off pulse time

Hardware-reset pulse timea

Time for VIO and internal voltages to be established

≥1s

>10s

100 200 ms

a. Active only when a full system reset is required.

2.5.2 VIO - 2.75V Supply

VIO provides an output voltage derived from an internal 2.75V regulator. Its electrical characteristics are shown below.

Parameter	Min.	Typ.	Max.	Units
Output Voltage (Iload = 50mA)	2.70	2.75	2.85	V
Load current			75	mA

You can use this output for the following:

•to indicate that the module is alive;

•to power interface circuits, external to the module.

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LZT 123 7263 R1C