AT73C224-EK1 Evaluation Kit
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User Guide
6439A–PMAAC–13-Feb-09
Table of Contents
Section 1
Introduction................................................................................................................. 1-1
1.1
1.2
1.3
Scope................................................................................................................................. 1-1
AT73C224-EK1 Features................................................................................................... 1-1
Deliverables ....................................................................................................................... 1-2
Section 2
Getting Started ........................................................................................................... 2-1
2.1
2.2
2.3
2.4
Electrostatic Warning ......................................................................................................... 2-1
Requirements..................................................................................................................... 2-1
PC System Requirements.................................................................................................. 2-1
Instructions......................................................................................................................... 2-2
2.4.1
2.4.2
2.5
2.6
To Start the AT73C224-EK1 Evaluation Board ................................................... 2-2
To turn off the AT73C224-EK1 Evaluation Board................................................ 2-2
Block Diagram.................................................................................................................... 2-3
Power Supply..................................................................................................................... 2-4
2.6.1
2.6.2
Transformer ......................................................................................................... 2-4
Power-up By A Battery ........................................................................................ 2-5
Dynamic Mode/Communication Interface Set Up................................................ 2-8
Static Mode........................................................................................................ 2-11
2.7
Dynamic/Static Modes ....................................................................................................... 2-7
2.7.1
2.7.2
2.8
2.9
Real Time Clock (RTC).................................................................................................... 2-13
On-Board Output Signals................................................................................................. 2-14
2.9.1
2.9.2
2.9.3
2.9.4
2.9.5
2.9.6
2.9.7
2.9.8
VBG ................................................................................................................... 2-14
CK32 - RTC Output Clock ................................................................................. 2-14
VCAPP and VCAPN .......................................................................................... 2-14
VINT .................................................................................................................. 2-15
DL1 .................................................................................................................... 2-15
SW2 ................................................................................................................... 2-15
Voltage Measurements...................................................................................... 2-16
Current Measurements ...................................................................................... 2-16
Section 3
AT73C224-EK1 Software Interface ............................................................................ 3-1
3.1
Software Panel................................................................................................................... 3-1
AT73C224-EK1 Evaluation Kit User Guide
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6439A–PMAAC–13-Feb-09
Table of Contents (Continued)
Section 4
Technical Specifications............................................................................................. 4-1
Section 5
PCB Layout ................................................................................................................ 5-1
Section 6
Schematics................................................................................................................. 6-1
Section 7
Revision History ......................................................................................................... 7-1
7.1
Revision History ................................................................................................................. 7-1
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6439A–PMAAC–13-Feb-09
AT73C224-EK1 Evaluation Kit User Guide
Section 1
Introduction
Congratulations on your purchase of the AT73C224-EK1. It is designed to give designers a quick start to
evaluate power management capability of the AT73C224 Analog Companion Power Management Unit
and for prototyping and testing of new designs.
1.1
Scope
This document describes the AT73C224-EK1 Evaluation Kit dedicated to products based on the
AT73C224 core. This board is designed to allow an easy evaluation of the products using demonstration
software.
To increase its demonstration capabilities, this standalone board has two serial interfaces (Two-wire
Interface (TWI) and Serial Peripheral Interface (SPI) via Parallel Port).
This User Guide acts as a general getting started aid as well as a complete technical reference for
advanced users.
This document uses as reference, the AT73C224
Datasheet, literature number 6266,
available at
www.atmel.com.
Typical Applications
DECT Phones
WLAN Portable Devices
Multimedia Devices
Portable Music Players
1.2
AT73C224-EK1 Features
The AT73C224-EK1 provides the following features:
Power Supply
– External Battery Connection
On-board Resources
– DC/DC Step-up Converter (BOOST) 3.3V to 5.0V, 1A, up to 90% Efficiency. Can be used as
BUCK/BOOST in SEPIC Configuration,
– DC/DC Step-down (BUCK) Synchronous Converter 0.9V to 3.4V, 500 mA, up to 90% Efficiency,
Pulse Skipping Capabilities,
– Two Low-Drop-Out Regulators: LDO3 & 4: 1.4V to 1.8V, 2.5V to 2.8V (100 mV Step), 3V, 3.3V
200 mA,
– Ultra-low Power Real-Time Clock and Backup Battery Management
AT73C224-EK1 Evaluation Kit User Guide
1-1
6439A–PMAAC–13-Feb-09
• 2.5V RTC LDO for Backup Battery Charging
• 32 kHz Crystal RTC Oscillator (1µA)
• RTC Circuit for Time and Date Information
– Activation of the Power Management Modules via Dedicated Enable Pin,
– Automatic Start-up Sequences, Power OK Signal Indicating when Start-up is Completed,
– Activation and Control of the Power Management Modules in Dynamic Mode (via SPI or TWI) or
in Static Mode
– ITB Signal Indicating the Beginning of Shutdown
– Very Low Quiescent Current
– Minimum External Components Count
– Supply from 3V to 5.5V (typ: Li-Ion Battery 3V to 4.2V)
– Available in a 32-pin QFN 5x5 mm Package with Downbond Pin
On-board Buttons
– BUCK, LDO3 and LDO4 Supply Selection,
– Digital Interface Power Selection
– TWI/SPI Selection
– Manual/Dynamic Mode Selection
– Manual Output Power enabling
– GPIO Enable
1.3
Deliverables
The AT73C224-EK1 package contains the following items:
An AT73C224-EK1 Board
One CD-ROM containing product software, User Guide and a full Datasheet
25-pin standard parallel cable
1-2
6439A–PMAAC–13-Feb-09
AT73C224-EK1 Evaluation Kit User Guide
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