Page 3 - Table of Contents; Section 1
i Table of Contents Section 1 Overview ............................................................................................... 1-1 1.1 Scope ........................................................................................................1-1 1.2 Deliverables .............................
Page 4 - ii; Section 5
Table of Contents ii Section 5 Appendix A – Configuration Straps....................................................... 5-1 5.1 Configuration Straps (CB1 - 23, JP1 - 8) ..................................................5-1 5.2 Power Consumption Measurement Strap (JP5) ..................................
Page 5 - AT91EB42 Evaluation Board User Guide; Scope
AT91EB42 Evaluation Board User Guide 1-1 Section 1 Overview 1.1 Scope The AT91EB42 Evaluation Board enables real-time code development and evaluation.It supports the AT91M42800. This guide focuses on the AT91EB42 Evaluation Board as an evaluation and demon-stration platform: Section 1 provides an ov...
Page 6 - Overview; x 32-pin EBI expansion connectors
Overview 1-2 AT91EB42 Evaluation Board User Guide 2 x 32-pin EBI expansion connectors 2 x 32-pin I/O expansion connectors 20-pin JTAG interface connector If required, user-defined peripherals can also be added to the board. See Section 5 fordetails. Figure 1-1. AT91EB42 Evaluation Board Block Diagra...
Page 7 - Section 2; Requirements; Requirements in order to set up the AT91EB42 Evaluation Board are:; Layout; Figure 2-1 shows the layout of the AT91EB42 Evaluation Board.
AT91EB42 Evaluation Board User Guide 2-1 Section 2 Setting Up the AT91EB42 Evaluation Board 2.1 Electrostatic Warning The AT91EB42 Evaluation Board is shipped in protective anti-static packaging. Theboard must not be subjected to high electrostatic potentials. A grounding strap or similarprotective ...
Page 8 - Setting Up the AT91EB42 Evaluation Board; Jumper Settings
Setting Up the AT91EB42 Evaluation Board 2-2 AT91EB42 Evaluation Board User Guide 2.4 Jumper Settings JP1 is used to boot standard or user programs. For standard operations, set it in theSTD position. JP8 is used to select the core power supply of the AT91M42800: 3.3V or 1.8V. For oper-ation at 1.8V...
Page 9 - Section 3
AT91EB42 Evaluation Board User Guide 3-1 Section 3 The On-board Software 3.1 AT91EB42 Evaluation Board The AT91EB42 Evaluation Board embeds an AT49BV1604 Flash memory device pro-grammed with defau l t s o ft ware . O n ly the lowest 8 x 8 KB sectors are used. T h eremaining sectors are user definabl...
Page 10 - The On-board Software; Table 3-1 defines the mapping defined by the boot program.; Angel Monitor; Memory Map; M Bytes
The On-board Software 3-2 AT91EB42 Evaluation Board User Guide 3.3 Programmed Default Memory Mapping Table 3-1 defines the mapping defined by the boot program. The boot software program, FTS and SRAM downloader are in sectors 1 and 2 of theFlash device. Sectors 2 to 8 support the Angel Debug Monitor...
Page 11 - Section 4; and V; ). Jumper JP8 can be removed to measure the core; JTAG Interface; An ARM
AT91EB42 Evaluation Board User Guide 4-1 Section 4 Circuit Description 4.1 AT91M42800 Processor Figure 6-1 on page 6-2 shows the AT91M42800. The footprint is for a 144-pin TQFPpackage. Strap CB20 enables the user to choose between the standard ICE debug mode and theJTAG boundary scan mode of operati...
Page 12 - Circuit Description; Memories; The AT91EB42 is fitted with two 128K x 8 SRAM devices.
Circuit Description 4-2 AT91EB42 Evaluation Board User Guide 4.3 Memories The schematic (Figure 6-3 on page 6-4 in Section 6, “Appendix B – Schematics”) showsone AT49BV1604 2 MB 16-bit Flash, one AT45DB321 4 MB serial DataFlash, oneAT24C512 64 KB EEPROM, one AT25256 32 KB EEPROM and two 128K/512K x ...
Page 13 - Layout Drawing
Circuit Description AT91EB42 Evaluation Board User Guide 4-3 of watchdog time-out as the pin NWDOVF of the AT91M42800 is connected to its inputMR. The assertion of this reset signal will light up the red RESET LED (D10). By pressing theCLEAR RESET push button (S1), the LED can be turned off. A n o t...
Page 15 - ADC Enabling; Closed; Battery Power Supply Supervisory Enabling; Closed
AT91EB42 Evaluation Board User Guide 5-1 Section 5 Appendix A – Configuration Straps 5.1 Configuration Straps (CB1 - 23, JP1 - 8) By adding the I/O and EBI expansion connectors, users can connect their own peripher-als to the evaluation board. These peripherals may require more I/O lines than availa...
Page 16 - Appendix A – Configuration Straps
Appendix A – Configuration Straps 5-2 AT91EB42 Evaluation Board User Guide CB7 Standard Power Supply Supervisory Enabling Closed (1) Standard power supply is supervised by the ADC (U20) channel 2 via a resistor bridge. The ratio is set to 0.1485 so that the standard power supply can be supervised up...
Page 18 - User or Standard Boot Selection; Open; Core Power Supply Selection; The AT91 core is powered by 3.3V power supply.
Appendix A – Configuration Straps 5-4 AT91EB42 Evaluation Board User Guide Note: 1. Hardwired default position: To cancel this default configuration, cut the wire on the board. 5.2 Power Consumption Measurement Strap (JP5) The JP5 strap enables connection of an ammeter to measure the AT91M42800 glob...
Page 19 - Section 6; Schematics; • Figure 6-8. Power Supply and Battery Charger
AT91EB42 Evaluation Board User Guide 6-1 Section 6 Appendix B – Schematics 6.1 Schematics The following schematics are appended:• Figure 6-1. PCB Layout • Figure 6-2. AT91EB42 Blocks Overview • Figure 6-3. EBI Memories • Figure 6-4. I/O and EBI Expansion Connectors • Figure 6-5. Push Buttons, LEDs a...
Page 20 - Appendix B – Schematics; PCB Layout
Appendix B – Schematics 6-2 AT91EB42 Evaluation Board User Guide Figure 6-1. PCB Layout
Page 21 - aluation Boa; Figur
Appe ndix B – Sc hema tics AT91E B42 Ev aluation Boa rd Use r Guide 6- 3 Figur e 6 -2 . A T 91E B42 B lo c k s Ov er v ie w INPUT / OUTPUT ON BOARD Serial Connectors / P.B. / LED PB[6..15] PA[6..7] PA0 PA[9..10] PB21 SUPPLY and RTC SAVE power supply / battery PB18 SERIAL MEMORIES SERIAL MEMORIES PB1...
Page 22 - EBI Memories
Appendix B – Schematics 6-4 AT91EB42 Evaluation Board User Guide Figure 6-3. EBI Memories VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 512k 512k 128k 128k 128k 512k 512k 128k layout for TSSOP 400mil. layout for SOJ 400mil. 2Mb...
Page 23 - I/O and EBI Expansion Connectors
Appendix B – Schematics AT91EB42 Evaluation Board User Guide 6-5 Figure 6-4. I/O and EBI Expansion Connectors
Page 24 - Push Buttons, LEDs and Serial Interface
Appendix B – Schematics 6-6 AT91EB42 Evaluation Board User Guide Figure 6-5. Push Buttons, LEDs and Serial Interface VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 Usart 0:...
Page 26 - Reset and JTAG Interface
Appendix B – Schematics 6-8 AT91EB42 Evaluation Board User Guide Figure 6-7. Reset and JTAG Interface VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 NRST JTAG[0..4] JTAGSEL NWDOVF RESET RESET ICE IEEE 3V3 SUPPLY CLEAR RST LED RSTLEDRSTLEDRSTLED JTAG0 JTAG1 JTAG2 JTAG4 JTAG3 NRST G1 G2 G3 G4...
Page 27 - Power Supply and Battery Charger
Appendix B – Schematics AT91EB42 Evaluation Board User Guide 6-9 Figure 6-8. Power Supply and Battery Charger VCC3V3 VDDCORE VDDIO VDDPLL VCC3V3 Vbatt+ Vps VDDCORE=1.8V VDDCORE=3.3V I Vddcore I Vddio 5 cel. NiCd Timeout 264mn TC in place only if Therm sensor on Batt. is not use. 2R5 / 1W VCC3V3 VINp...
Page 28 - Battery Type and Connection
Appendix B – Schematics 6-10 AT91EB42 Evaluation Board User Guide Figure 6-9. Battery Type and Connection T ˚ C B a t t e r y : 6 V / 3 0 0 m A H N i C d S A F T : V R E 1 / 2 A A R e f 1 3 9 6 6 3 W i r e : g a u g e 2 0 A W G W i r e : g a u g e 2 0 A W G T m a x 4 5 ˚ C B T 1 6 V / 3 0 0 m A H 1 ...
Page 29 - C Memories and SPI ADC
Appendix B – Schematics AT91EB42 Evaluation Board User Guide 6-11 Figure 6-10. SPI Memories, I 2 C Memories and SPI ADC VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 VCC3V3 Vbatt+ Vps VCC3V3 VCC3V3 VCC3V3 VCC3V3 Data Flash Memory Serial EEPROM memory on PIO Serial EEPROM memo...
Page 30 - Atmel Headquarters
© A t m el C or po ra t io n 2 0 0 0 . A t m e l C o r p o ra t i o n m a ke s n o wa r ra n t y fo r t h e u s e o f i t s p r o d u c t s, o t h e r t h a n t h o s e ex p re s s l y c o n t a i n e d i n t h e C o m p a n y ’s s t a n d a rd w a r -ra n t y w h i c h i s d e t a i l e d i n A t m...
