Atmel AT91EB42 - Manuals

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...

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 ...

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...

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...

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...

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...

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 ...

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...

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...

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...

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...

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...

Appendix B – Schematics 6-2 AT91EB42 Evaluation Board User Guide Figure 6-1. PCB Layout

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...

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...

Appendix B – Schematics AT91EB42 Evaluation Board User Guide 6-5 Figure 6-4. I/O and EBI Expansion Connectors

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:...

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...

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...

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 ...

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...

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