STEVAL-TLL004V1 Datasheet STEVAL-TLL004V1 | P1-P3

March 2009 Rev 1 1/10

UM0682

User manual

Quick start guide for the

STEVAL-TLL005V1 power flash demonstration board

Introduction

This document provides the basic settings and instructions for using the STEVAL-TLL005V1

power flash demonstration board based on the STCF03. The STCF03 is a high efficiency

power supply solution to drive a single flash LED in camera phones, PDAs and other hand-

held devices. The STCF03 is a buck-boost converter to provide the proper LED current

control over all possible battery voltage and output voltage conditions. All functions of the

device are controlled by a microcontroller through an I

C interface.

The STEVAL-TLL005V1 consists of both a motherboard and a daughterboard connected

together (STEVAL-TLL004V1 for the daughterboard only).

Figure 1. STEVAL-TLL005V1 power flash demonstration board

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Contents UM0682

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Contents

1 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Battery mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 External power supply mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Communicating with the PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.1 Switch SW1: reset switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.2 Switches S1and S2: configurable switches . . . . . . . . . . . . . . . . . . . . . . . . 6

4 PIR sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.1 Activating the PIR sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4.2 Deactivating the PIR sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Starting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

UM0682 Power supply

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1 Power supply

The STEVAL-TLL005V1 can be powered either by a mobile Li-Ion battery (battery mode), or

an external 5 V DC power supply (external power supply mode).

1.1 Battery mode

To power the STEVAL-TLL005V1 by battery, perform the following steps:

● Connect the battery across header H5

● Position the jumper across pins 2-3 of J2 (as shown in Figure 2)

When the STEVAL-TLL005V1 is connected to the PC via USB, the battery begins charging

automatically with a current of approximately 200 mA. The battery used in testing the

system is a NOKIA BL-5B.

1.2 External power supply mode

If using an external 5 V DC power supply to power the demonstration board, perform the

following steps:

● Connect the external DC power supply across header H4

● Position the jumper across pins 1-2 of J2 (as shown in Figure 3)

Figure 2. J2 connect details for battery mode

AM01304v1

P1-P3 P4-P6 P7-P9 P10-P10

STEVAL-TLL004V1

Mfr. #:

Buy STEVAL-TLL004V1

Manufacturer:

STMicroelectronics

Description:

LED Lighting Development Tools PWR FLASH EVAL BOARD BASED ON STCF03

Lifecycle:

New from this manufacturer.

Delivery:

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STEVAL-TLL004V1