Atmel AT73C239-EK1 User manual

AT73C239-EK1 Evaluation Board
..............................................................................................
User Guide

AT73C239-EK1 Evaluation Board User Guide -i
6235A–PMAAC–04-Apr-06
Table of Contents
Section 1
Overview............................................................................................... 1-1
1.1 Scope........................................................................................................1-1
1.2 Deliverables ..............................................................................................1-1
1.3 AT73C239-EK1 Evaluation Board ............................................................1-1
Section 2
Setting Up the AT73C239-EK1 Board .................................................. 2-1
2.1 Electrostatic Warning ................................................................................2-1
2.2 System Requirements...............................................................................2-1
2.3 Hardware Settings ....................................................................................2-1
2.4 Layout .......................................................................................................2-2
Section 3
AT73C239-EK1 Board Description ....................................................... 3-1
3.1 AT73C239 Device.....................................................................................3-1
3.2 Power Supply Circuitry..............................................................................3-4
3.3 Two-wire Interface ....................................................................................3-5
Section 4
Using the AT73C239-EK1 .................................................................... 4-1
4.1 Getting Started..........................................................................................4-1
4.2 Electrical Parameter Measurement...........................................................4-2
4.3 AT73C239 Test Interface..........................................................................4-4
4.4 Quick Start ................................................................................................4-5
Section 5
Technical Specifications ....................................................................... 5-1
5.1 Specifications............................................................................................5-1
Section 6
PCB Schematics................................................................................... 6-1
Section 7
Revision History.................................................................................... 7-1
7.1 Revision History ........................................................................................7-1

AT73C239-EK1 Evaluation Board User Guide 1-1
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Section 1
Overview
1.1 Scope This document describes the AT73C239-EK1 dedicated to the AT73C239 product. This
board is designed to allow an easy evaluation of the product using demonstration
software.
To increase its capabilities for demonstration, this standalone board has several serial
interfaces (Parallel Port and Two-wire Interface).
This user guide acts as a general getting started guide as well as a complete technical
reference manual for advanced users.
This document refers the AT73C239 datasheet, literature number 6201, available at
www.atmel.com.
1.2 Deliverables The AT73C239-EK1 package contains the following items:
!An AT73C239-EK1 board
!One software CD
1.3 AT73C239-EK1
Evaluation Board
The AT73C239-EK1 provides the following features:
!Power supply
– External power supplies (VIN and VBAT)
– Transformer (5.5V up to 9V with 100mA minimum)
!Serial interfaces
– One Parallel Port
– One Two-wire Interface
!On-board resources
– 1 LDO - 2.75V/1.8V - 25mA
– 1 LDO - 1.8V/1.5V - 30mA
– 1 LDO - 1.8V/1.5V/1.23V - 60mA
– 1 LDO - 1.8V/1.5V/1.2V - 2mA
– 1 Reset Generator

Overview
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!Power supply select I2 button
– Input power supply selection for LDO4

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Section 2
Setting Up the AT73C239-EK1 Board
2.1 Electrostatic
Warning
The AT73C239-EK1 evaluation board is shipped in protective anti-static packaging. The
board must not be subjected to high electrostatic potentials. A grounding strap or similar
protective device should be worn when handling the board. Avoid touching the compo-
nent pins or any other metallic element.
2.2 System
Requirements
For AT73C239-EK1 tools, the minimum hardware and software PC requirements are:
!Intel Pentium II processor
!64 MB RAM
!70 MB free hard disk space (for AT73C239 Demokit installation)
!Windows®95/98/2000/ME/XP and Windows NT®4.0 or higher (for Windows
2000/XP/NT 4.0 the software DLPORTIO.exe must be installed)
!Parallel port (COM port)
2.3 Hardware
Settings
External DC power supplies are required:
!Transformer 5.5V up to 9V DC (100mA minimum)
!Power supply for VIN input 3V up to 3.6V DC
!Power supply for VBAT input: 2.5V up to 3.6V DC

Setting Up the AT73C239-EK1 Board
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2.4 Layout
Figure 2-1. AT73C239-EK1 Top View
Switch For
Parallel port
Transformer
AT73C239
VIN Input
Ground VBAT Input LDO4 Input
Voltage Voltage Voltage
Selection
5V Power
Point Connection Output Ground for
Output Voltage
Reset Input
Load Application
For Load Selection
For Load
Application
TWI Interface
Measurement
And Output
Pins
5.5V up to 9V
Supply

Setting Up the AT73C239-EK1 Board
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Figure 2-2. AT73C239-EK1 Serigraphy - Top View

Setting Up the AT73C239-EK1 Board
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Figure 2-3. PCB Layout - Top Layer

Setting Up the AT73C239-EK1 Board
AT73C239-EK1 Evaluation Board User Guide 2-5
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Figure 2-4. PCB Layout - Bottom Layer

AT73C239-EK1 Evaluation Board User Guide 3-1
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Section 3
AT73C239-EK1 Board Description
3.1 AT73C239
Device
!Main supply 3.0V to 3.6V
!Independent 2.5V to 3.6V auxiliary supply for backup section
!Internal state machine for startup
!25 mA/1.8V - 2.75V linear low drop out regulator with high PSRR and low noise
(LDO1)
!30 mA/1.5V - 1.8V linear low drop out regulator with high PSRR and low noise (LDO2)
!60 mA/1.23V - 1.5V - 1.8V linear low drop out regulator with high PSRR (LDO3)
!2 mA/1.2V - 1.5V - 1.8V linear low drop out regulator with very low quiescent current
(LDO4)
!HPBG economic high performance voltage reference for LDO supply to RF sections
!LPBG low power voltage reference to LDO4 during backup battery operation
!Internal reset generator for main supply
!Additional external reset input
!Two-wire Interface (TWI) for independent activation and output voltage programming
for each LDO
!Available in 3 x 3 x 0.9 mm 16-pin QFN package
!Applications: GPS Modules, WLAN Devices, Wireless Modules

AT73C239-EK1 Board Description
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3.1.1 Block Diagram Figure 3-1. AT73C239 Functional Block Diagram
HPBG
LPBG
Internal Oscillator
Reset Generator
TWI
State Machine
LDO1
VDD
3.0V-3.6V
VOUT
1.8V or 2.75V
ILOAD 25 mA
Fuse1
POR1
Fuse2
POR1
VMON
VDD1
VO1
LDO2
VDD
3.0V-3.6V
VOUT
1.5V or 1.8V
ILOAD 30 mA
VDD2
VO2
LDO3
VDD
3.0V-3.6V
VOUT
1.23V or 1.5V or 1.8V
ILOAD 60 mA
VDD3
VO3
LDO4
VDD
2.5V-3.6V
VOUT
1.2V or 1.5V or 1.8V
ILOAD 2 mA
VBAT
VBG
VO4
GNDA/AVSS
XRESIN
XRESO
TWCK
TWD
GNDD
VZAP

AT73C239-EK1 Board Description
AT73C239-EK1 Evaluation Board User Guide 3-3
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3.1.2 Board Position The AT73C239 is located in the center of the AT73C239-EK1.
Figure 3-2 . AT73C239 Placement
AT73C239

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3.2 Power Supply
Circuitry
Three power supplies are required:
!Transformer with 5.5V min to 9V max
!External VIN with 3V min to 3.6 max
!External VBAT with 2.5V min to 3.6V max
The power supply voltage is regulated with on-board circuitry. Input voltage on this
connector should be included between 5.5V and 9V.
This power supply input is NOT protected against polarization inversion.
Figure 3-3. AT73C239 Power Supply
Figure 3-4 . Power Supply Connector
AT73C239
U1
I2
VIN
LDO4 - Input
LDO3 - Input
LDO2 - Input
LDO1 - Input
VBAT
GND
VIN 3V to 3.6V GND VBAT 2.5V to 3.6V
Transformer

AT73C239-EK1 Board Description
AT73C239-EK1 Evaluation Board User Guide 3-5
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The on-board power supply circuitry allows various power supply configurations. The
power supply selection for LDO4 Input Voltage is performed using the I2 switch.
Figure 3-5 . LDO4 Power Supply Input Configuration
3.3 Two-wire
Interface
The board controls the AT73C239 via the Two-wire Interface through the parallel port.
If the user wants to program the AT73C239 directly with an extend host, J4 can be
removed and the AT73C239 can be driven directly.
Figure 3-6 . AT73C239 TWI Configuration
I2 Switch
PARALLEL PORT
TWI DATA CONNECTOR
TWI CLOCK CONNECTOR

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Section 4
Using the AT73C239-EK1
4.1 Getting Started The AT73C239-EK1 can be used as a standalone board. For optimal use, the connec-
tion between the demo board and the PC should be removed.
Figure 4-1. AT73C239-EK1 Block Diagram
VIN
3V/3.6V
VBAT
2.5V/3.6V
AT73C239
LDO 1
2.75V/1.8V
LDO 2
1.8V/1.5V
LDO 3
1.8V/1.5V/1.23V
LDO 4
1.8V/1.5V/1.2V
Parallel
Port
LDO 4 Input
Voltage Selection
5V
Regulator
LDO 1
Force
LDO 2
Force
LDO 3
Force
LDO 4
Force
Connections for Load Application
Connections for Voltage Measurements
TWI
External
Power
Parallel
Port

Using the AT73C239-EK1
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4.2 Electrical Parameter Measurement
The AT73C239-EK1 is designed to allow easy measurement of electrical parameters on
the board. Connectors are provided to perform voltage and current measurements.
Measurements such as load regulation, line regulation, noise and PSRR can be
performed on these pads.
4.2.1 AT73C239 Voltage Measurements Pads
There are four “sense” pads that perfom voltage measurements on each LDO output
delivered by the AT73C239. These four pads are described as follows:
!VO1 - Output Voltage of LDO1 (2.75V / 1.8V)
!VO2 - Output Voltage of LDO2 (1.8V / 1.5V)
!VO3 - Output Voltage of LDO3 (1.8V / 1.5V / 1.23V)
!VO4 - Output Voltage of LDO4 (1.8V / 1.5V / 1.2V)
Figure 4-2 . Pads For Voltage Measurement
4.2.2 AT73C239 Pads for Load Application
To perform measurements with load, or to connect external applications
(microcontroller, communication module, etc.), “force” pads are available.
GROUND For
LDO1 Voltage
Measurement
LDO2 Voltage
Measurement
LDO3 Voltage
Measurement
LDO4 Voltage
Measurement
Voltage Measurement

Using the AT73C239-EK1
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Figure 4-3 . Current Measurement on One LDO
Current measurement can be done by connecting an ampere-meter between the test
point and the load. It is possible to connect via the test point only one output regulator at
the same time. To connect several loads, refer to Figure 4-4.
Figure 4-4 . Load Connection on Each Output LDO
Test Point
For Load Regulator Output
Selection
Connection Load
Used For Load
Connection
GROUND
For Load
GROUND
Application
Connect To Application
Connect To Application
Connect To Application
Connect To Application
(For example: RTC Block)
(For example: Micrcontroller Core)
(For example: Flash Memory)
(For example: Microcontroller Pads)

Using the AT73C239-EK1
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4.3 AT73C239 Test Interface
Figure 4-5 shows the test interface.
Figure 4-5. Software Panel
Power On/Off
LDO 4
Message Box: Good connection between PC
Bad connection between PC and AT73C239
Close The
Output Voltage
Selection
LDO 3
Output Voltage
Selection
LDO 1
Output Voltage
Selection
LDO 2
Output Voltage
Selection
Software
Interface
Of LDO’s
1.8V / 1.5V / 1.23V
2.75V / 1.8V
1.8V / 1.5V
1.8V / 1.5V / 1.2V
and AT73C239

Using the AT73C239-EK1
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4.4 Quick Start
To get started quickly with the AT73C239-EK1 board,
!If your PC runs with Windows®NT, 2000, or XP, install DLPORTIO.exe. It is available
in CD-ROM:\CONFIGURATION\ folder of the CD.
!To install the AT73C239 Test Interface, go to the folder
CD-ROM:\SOFTWARE\Installer on the CD provided with the evaluation kit, and click
on setup.exe.
!Connect the transformer on J6.
!Select the power configuration I2 switch (for LDO4 supply).
!Connect the parallel port.
!To launch the AT73C239 software test interface, click on AT73C239_Rev1-3.exe in
the folder CD-ROM:\SOFTWARE\ CD.
!If the PC has a good connection with the AT73C239-EK1, the message board
indicates “TWI ready”. If the message box indicates “TWI error”, check that the setup
has been done correctly.

AT73C239-EK1 Evaluation Board User Guide 5-1
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Section 5
Technical Specifications
5.1 Specifications !System Unit
– Physical Dimensions ..............................................L= 65 x W = 65 x H = 27 mm
– Weight ...........................................................................................................50 g
!Operating Conditions
– Voltage Supply ......................................................................................5.5V - 9V
!Connections
– Parallel port Connector ..................................................................SubD25 male