STM32-P107 development board User`s manual
Contents
1.2. 33V STM32 P107 board revision C OLIMEX LTD PLOVDIV BULGARIA 2013 VBUS hups havo mex com USB CIRCUIT sav mcue P HNDA O Cose H Open USB HOST y C OSE i ost H o A23KU USAWKL SADC 2_INO IM2 CH1_E nocne H_MLC s pku O G VBUS RE 5V_HOS _ WR USB_HOS 5 Aas AL24SAR 2 RE AH_RMII_REMS CHK M_CH2E MI_RX_C KE H_ MI REE GH RMII_LRE _C K 5V_0 G_ WR 5V_HOS _ WR 5V_HOS _ WR 00 AdeSAR 2 EIH_RMII_ MD ON2 M2 CH3E HMI_MDOE H_ Mi MO E H_RMII_MD O OR Boa d_Mounted USB_HOS _D USB_HOS _D a a AJ2GSAR 2_RX_ IMS CH4 ADC12_N3 M2 CHAE MaM CO USB_HOS _D USB_HOS _D a gt ec Alag 1 NSSR gt 5S MMCUSAR 2 CK ADCI2__4 CS MMC z A 1 SCK DAC_OU 2ADC1 _IN5 as col lt N gt Abi 1MSOADC12 ING M3 CH1 IM1 BKN S E ATS 1 MOSIBDQURA ORSCIAE HMI RXDYE H_RMICRS DV M_CB N RMI_CRS DV USB D 1 5V oo w w o USB A 3 3VA AWgjSAR 1 CKO G_ SSO M1 CHI MCO R2 22R DA 44 KA u3 5 o o AdMSAR ona mG S veus HN1 3 O Cose H Open l olga ty 7 S AlggJSAR 1 R UGH3O G_S_D o4 1H ie A Ag 5 9 q AJAGISAR 1 OS GAWMRX IM1_CH4O G_ S DM USB_VBUSON AGB GND oa es AL7USAR 1ROSG D X MLEROG SD USB_HOS _D os oulsB 3 T 4
3. 1375mil 2448mil 1975mil 4950m11 5200m11 All measures are in mils AVAILABLE DEMO SOFTWARE All demo examples are available at the board s web page https www olimex com Products ARM ST STM32 P107 and wiki article https www olimex com wiki STM32 P107 Make sure that the demo you download is compatible with the board revision you have The board revision is printed on STM32 P107 itself REVISION AND ORDERING INFORMATION STM32 P107 fully assembled and tested Manual revision history REV I created December 2009 REV A edited by TU December 2010 REV B demo software added and mechanical dimensions detaile REV C rev A schematic and added more programmers in BOARD USE REQUIREMENTS REV D edited June 2011 changed schematic REV E changed schematics to rev B added board revision history REV F added BOOTO_E RST_E description changed dimensions updated revision B pictures updated disclaimer REV G updated the information to fit board revision C updated schematics improved document layout added product support information updated links Board revision history 1 ST2052BD is exchanged with LM3526 L 2 SD MMC signals are changed as follows SPI1_MOSI gt SPI3_MOSI SPI1_SCK gt SPI3_SCK SPI1_MISO gt SPI3_MISO and SPI1_NSS renamed to CS MMC 3 Changed the polarit
4. the board is power supplied from External SOUrce Default state is position 5 6 shorted B0_0 B0_1 CS When this jumper is in position BO_1 BOOTO is connected to 3 3V and jumper is in position BO_O BOOTO is connected to GND Default state is BO 0 B1_0 B1_1 Ss When this jumper is in position B1_1 BOOT1 is connected to 3 3V and jumper is in position B1_0 BOOT1 is connected to GND Default state is B1_0 VBUS CON When is in position H connects 5V_HOST_PWR to OTG_VBUS When is in position O connects 5V_OTG_PWR to OTG_VBUS O H e Default state is O USB_D CON When is in position H connects USB_HOST_D to OTG_DP O H When is in position O connects USB_OTG_D to OTG_DP Default state is O USB_D When is in position H connects USD_HOST_D to OTG_DM When is in position O connects USB_OTG_D to OTG_DM Default state is O O H PWDW_D 1s active Default state is closed When position 3 4 is shorted the board is power supplied from USB_OTG When is closed disables Ethernet transceiver STE101P Power Down Mode power when the when the STE101P 3 3V_MCU_E sl Enable microcontroller 3 3V power supply Default state is closed 3 3V_E PEN Enable regulator VR2 3 3V LM1117 LW Default state is closed 3 3VA_E Enables board 3 3V analog power supply Default state is closed
5. 3 3VA_MCU_E PTE Enables microcontroller 3 3V analog power supply BS Default state is closed GNDA_E PTE Enables board analog GND LW Default state is closed R T Connects RST to TRST Default state is open RST_E BOOT_E jumpers Note that it is recommended to move those jumpers together either both should be open or both should be closed When both are closed RS232 boot is enabled Default states are RST E open BOOT E open INPUT OUTPUT Status LED1 green with name STAT1 connected to STM32F107 pin 63 PC6 1252_MCK TIM3_CH1 Status LED2 yellow with name STAT2 connected to STM32F107 pin 64 PC7 12S3_MCK TIM3_CH2 Power on LED red with name PWR this led shows that 3 3V is applied to the board User button with name WKUP connected to STM32F107 pin 23 PAO WKUP User button with name TAMPER connected to STM32F107 pin 7 PC13 TAMPER RTC Reset button with name RESET connected to STM32F107 pin 14 NRST CONNECTOR DESCRIPTIONS JTAG 24 6 8 10 12 14 16 18 20 PEERS E2239 MA The JTAG connector allows the software debugger to talk via a JTAG Joint Test Action Group port directly to the core Instructions may be inserted and executed by the core thus allowing STM32F107 memory to be programmed with code and executed step by step by the host software For more details please refer to IEEE Standard 1149 1 1990 Standard Test Access Port and Boundary Scan Architecture and STM32F107 datasheets and u
6. XER XD4 vo a PA e E l E12 IML CH3N D12 5 g el gag 5 E13 IML CH3 q D13 i vor Sle amp II ca D MACH H SO RS Di E H_RMII_RXDO E H_RMI_RXDO sak Ja RxD0 MoDEO sl cals EEEE a Dlg Ma CH4 bie E H_RMII_RXD1 E H RMI _RXD1 Lo RxD1 MODEL Bl Ble a E15 IMI BKIN iE ies aS a ad S M32 107VC 6 H_AD2 RADO HV AD a o e RXDV H AD1 RXC K H ADL Gn H ADO la RXERRXD4 H ADO x do E_H_RMILMDC E H RMI MDC bz Moc AN E H RMII MDO E H RMI MDO 6 MDIO 5 E HRMIRE_CK 1 ms BUTTONS np z z COM al 4 o oo B E R S232 HN1X2 Open 33V D E 5 RS O Te 4 CRS 2 m AGI A 2 33V 33V acre me KG ke y i re g E H RMII CRS DV E H_RMI_CRS_DV ls CO CRS_DV MODE2 ee A A w S 3232BDR SO16 Er E H SO RS H SO RS R20 NA e cali yey w a e NRS ni mas O RZ 10k 3H MES Fs ae 27 Il 100r tt a z rxt S51 nc O 8 v a c33 x R30 lou 63V 2 RB AS 30 E u ada a 10k RX RD m 3 6 E a 100n DO c35 v aes RI BC 060 CI v e ll C34 100n R1 AN8710A EZC c37 a ei c2 100r R Toon 100n pa Al E H_RMILRE CK E HRML_RE C K S c2 E Ba AM ER RSL 330R Bee Osa USAR 2_ X u i U 4 C RXD C_DCD 100R 1 USAR 2 R S wo iN Uy CRS de a6 ak R37 R39 2 ye a4 en 200R 10 Raa wku USAR 2 RX 210R 2 RUN 3 c XD 3 7 cD1 RIOU 2 330R USAR 2 C S 9 N s CCS 4 8 4 ED 1 33V 33V 33V R20U y pai VDD O sous E UEXT F 330R Mee oon 33k 3 16 5 mh D3 4 Boo 0 AQ US WR R42 NA 2 a a vss ou R43 UEX _ WR_E c39 NA 6NC2 50MHz E FLsADO 47k e R45 HN1x2 Open pen 14148 100n oMsG4 H AD1 C OS
7. j pes i ug NS o o pE E p k 1 BE 3 os GAG pes USB_HOST j og 3 Ea 36 91 ever x ROTOR a a at a A f m as z A 2 a pa e J scafi 0 SERERE TOMO pco l Hofo lo o USB_OTG SMD jumpers TS 3V a amer aa Seana OO e e e el 6 8 9 Ol Pl Ll Er A A S EN GF y IURE D BO ui of ela dice 167 wa ev Eci ot a CEN cel nonc CC 209 Pa EE HRH OLINEX Con oeu OOP CCCECLLLLLELL Le 6 El EXI AA SAL D El A El e el ul a o Y 8 fe Dy Q PWR jack 6 5 9 VDC y r G i TANPER SO NNC ON PTH jumpers Buttons SD MMC card smp Proto area RST_E BOOTO_E jumper POWER SUPPLY CIRCUIT STM32 P107 can take power from three sources PWR connector where 6 5 9 V DC or 6V AC is applied by external power source 5V_OTG PWR from USB OTG 5V_JTAG from JTAG The programmed board power consumption is about 70 mA RESET CIRCUIT STM32 P107 reset circuit includes JTAG connector pin 15 U2 STE101P pin 28 RESET R73 10k R74 3300hm R75 1000hm 1 C55 100nF STM32F107 pin 14 NRST and RESET button CLOCK CIRCUIT Quartz crystal 25 MHz is connected to STM32F107 pin 12 OSC_IN and pin 13 OSC_OUT Quartz crystal 32 768kHz is connected to STM32F107 pin 8 PC14 OSC32_IN and pin 9 PC15 OSC32_OUT JUMPER DESCRIPTION PWR_SEL 5 4 When position 1 2 is shorted the board is power supplied from JTAG 3 4 le When position 5 6 is shorted
8. 9 vcs At7al_ MS SWDIMS MS 33V USB O GD USB_ AU ee lag CK SWCCK cK O 3 P M C2026 1 M lt ee Al7H DIS 3 NSS M2 CHLE RS 11 NSS DI u2 a 8 pd 2 OGD 22R R3 T ea 33V a 2 a USB_D R6 33k aow o aso NDGA B3DC12_N8 M3 CH3E H_MI_RXD2 IM1_ CH2 B1 i 2 O B 3ppCI2_N9 M3 CH4E H MI_RXD3 IM1_ CH3 B2 O G DM 2R R7 9 3 BNDEKO Glose Hl Open USB_O G FH oo 2 Lv pos w Sep USB_OTG m Y 843001 B2800 1 83 c13 oa H Al bi Neon Bhgh DOS 3 95 RACESWO M2 CH2S 11 SCI DO 11 c12 33 BN RS S 3gySO IM3 CHIS 1 MISO RS aiei o USB HOS D 5V_O G_ WR BVOG_WR vas 8 Bfo C1 SMBA S I3 MOSIE HMI_ SOU E HMI SOU IMG_CH2S 1_MOSICANZ RX lapa7 P USB O G D USB O G D USB O G D Bo2C1 SC M _CH1USAR 1_ XCAN2_ X B USB O G D USB O G D gt faa 8 22R 1 Bfo3C1 SDA M4 CH2 USAR _RX er ral O GID 2 C14 Il 100n E Bfg5M4_CH3 EZ MISCXD3 2C1 SC CAN1 RX 2C1_SC O GID owed 3 BlogW _CHA 2C1 SDAANL_ X 2C1_SDA 15 16 aa c17 NA b B 472C2_SC USAR 3_ XE H_MI_RX_ER 1M2 B9 EY en 3 5 VRE Blag2C2_SDAE SH _RMII_EX_ BN X ENE HRN X_EN IM2_CH4 E H RMII_ X_EN 2268 E BisS 2 NSSE H WMIl_ 2x00 A USAR 3 CK M_BKNCAN2 RXE HMI EXH RMIl_MXDQ00 oa w o o sa E Bls 25CKe H RMII Xp S MI CHINCAN2 XE HMI_ XDIE H BH MIL XD1 M CRO_AB Y Bis 2 MISO MICH NUSAR3RS or Bis 2 MOSCS UEX M_CH3N CS_UEX BOO 0 Ve hie C 1spca2 n10 ZA BA sac R10 10k ct t i pa CD12 INLE EHH RMMLMIRADEC H_RM LMDC E H_RMILMDC RM2G2 RM1G2 RM1G3 RM1G4 1 NS BOO iO ChyADC12_IN12 E H_MI_ XD2 JTAG 3 D M MC 33 2 x Chygpci2_INI3E
9. A controller Supported peripherals timers ADCs DAC I Ss SPIs I Cs and USARTs Page 4 of 19 Debug mode Serial wire debug SWD amp JTAG interfaces Cortex M3 Embedded Trace Macrocell 80 fast I O ports 80 I Os all mappable on 16 external interrupt vectors and almost all 5 V tolerant 10 timers four 16 bit timers each with up to 4 IC OC PWM or pulse counter and quadrature incremental encoder input 1 x 16 bit motor control PWM timer with dead time generation and emergency stop 2 x watchdog timers Independent and Window SysTick timer a 24 bit downcounter 2 x 16 bit basic timers to drive the DAC 14 communication interfaces 2 x I C interfaces SMBus PMBus 5 USARTs ISO 7816 interface LIN IrDA capability modem control 3 SPIs 18 Mbit s 2 with a multiplexed I S interface that offers audio class accuracy via advanced PLL schemes 2 x CAN interfaces 2 0B Active with 512 bytes of dedicated SRAM USB 2 0 full speed device host OTG controller with on chip PHY that supports HNP SRP ID with 1 25 Kbytes of dedicated SRAM 10 100 Ethernet MAC with dedicated DMA and SRAM 4 Kbytes IEEE1588 hardware support MII RMII available on all packages CRC calculation unit 96 bit unique ID Page 5 of 19 Page 6 of 19 Page 7 of 19 SCHEMATIC
10. E oMsG3 H_AD2 UEX fe Wales Silke ey o MPG1 RM ISE 1 2 USAR 3 X a a USAR 3 RX l 12C1_SC 5 6 12C1SDA S 3 MISO 7 8 S 3 MOSI S 3 SCK al 10 CS UEX BH10S 5V POWER SUPPLY C RCUIT aav aava 5V R46 33v 33VA S 3 SCKS 3_MOSIS 13_MISOCS_UEX I2C1_SC 2C1_SDAUSAR 3_ X USAR 3_RXS I1_NSSS l1_SCKS I1_MISO S 11_MOSI USAR 2_ X USAR 2_RXUSAR 2_R SUSAR 2 C S z o ED al 33V D 0603 33V_E 5V_J AG 1N5819S H 33V a ty chee STATUS LEDS RESET CIRCUIT y R47 o VR1 5 OV 5V_0 G_WR Br 1N5819S VR2 3 3V sil B2Bpo 1 A AA AME1085 M1117IM_X ADJ 33VA E SA2 40k WR_JACK o 1 vo paai m 2 5V_EX cose 1N5819S a 1 gy 2 SA1 a A Ad ASK GND ADJ ADJ GND COSE us 10k al al o NAS M1001RWX6 o 1138 e1 del 1 3 a Ree vcc Rese p RS HNDG 4 s a c42 R evac c43 2 i EY q pi 8 22 ele 65 9 vDC on oyo 470u 16VDC gt 100n R54 52 100R 1 R56 css on ai sa2 STM32 P107 board revision C R55 GNDA_E X VS Gp 300R 1 ly pee as y MOS 054 OLIMEX LTD PLOVDIV BULGARIA 2013 7 N C OSE o 100n https www olimex com Y BOARD LAYOUT 3V_battery PTH jumpers connector JTAG RST PTH jumpers Mount hole 3 3V a TRATA Ls EAT Y Pisssecsscceeucaeus Mo y oT ia Tht ttt lin 000 Ethernet mY ao Me ps vw DEEPA eee J ES a BB ai 2 SCO ECC CEC CCC CER LE connector S E vi PE ld gt ex RESET ln ALEC LET P TAi O ECCECCE SS I miu4 Mia j m m2 n62 3 HMANALA A MILL AAA a
11. HMI_ X_C K G SD MMC O alas CfggDC12_INIE EHLAMIPHRAISOH_RMI _RXDO E H RMII_RXDO J AG Ba CS YMCOS_MMC M R12 Bo_o Bola ChADC12_INIE EH AM ROH RMI _RXD1 E H RMII_RXD1 1 2 5 SI _3 MOSI a R13 8 2 Ch252_MCK SMA Q 1 RS RA1206 x0603 4B8 Ok a 4 OSC_IN c4 2 _4B8 Rid a Cl62S3_MCK SMA Q 2 pa Dl s 6 a NA ClesM_CH3 ce MS 7 8 5 SCK e a ClegM _CH4 c7 CK 9 10 S WNS 3 MISO 3k R15 it R615 3 osc ou Cl7WAR 4_ XS 93_SCK S _SCK S 13_SCK lt 1 12 FR R17 a C 7dJAR 4 RS 13_M SOS 13 MISO c8 S 13 MSO DO ES Y 14 FRE R18 CladJAR 5_ X5 93 MOSIS 13 MOSI c9 S 13 MOSI RS RA1206_ 4x0603 _4B8_10k A 16 SNA c AM ER R C10 nis 7 AM ER R RM2G3 al 18 MICRO 63V o joo N Cfg OSC32_N C11 C21 10p RS 1c rv 5V_J AG 1l 20 els osc32_ou l22u 63v c23 jjo O EN aa p p BH20S aks D SC_IN CAN1_RX Di EMER D g SC_OU CANI_ X Do E3 RACEDO DfadSAR 2 CUSAR 2 C S USAR 2 C S ay op as DigdSAR 2 RISSAR 2 R S USAR 2 R S E H_RMII MDN E H RMI MDN 9 2 2k O Eth rn t gad D geSAR 2_ USAR 2_ X USAR 2_ X I 330R u e e s cen Dle7SAR 2 RUSAR 2 RX D6 USAR 2 RX E H RMII_XDO E HRMI_ XDO 2 XDO vob 33V iss cere D asSAR 2 ClUSB_VBUSON Y D7 E H_RMII_ XD1 E HRMI_ XD1 3 XDI 1p 6 Ba ECRM D 55SAR 3_ XUSARM3 R XDV USAR 3_ X 4 XD2 mo 0 o o 90 iaa D 56SAR 3 RUSARM3_RKDO USAR 3 RX I 5 XD3 vos sy D 5USAR 3 CK E H_MI_RX_D1 E H RMII_ X EN E HRMI_ XEN 1 XEN E10 IM1_CH2N D10 D sgUSAR 3_C SE H_ML_RX_D2 bit 9 XCK 1 EM IMier2 Dlg M4_CHL USAR 3 R SE H_MI_RX_D3 33y daa a NN
12. STM32 P107 development board User s manual All boards produced by Olimex are ROHS compliant Rev G December 2013 Copyright c 2013 OLIMEX Ltd All rights reserved DISCLAIMER 2013 Olimex Ltd Olimex logo and combinations thereof are registered trademarks of Olimex Ltd Other product names may be trademarks of others and the rights belong to their respective owners The information in this document is provided in connection with Olimex products No license express or implied or otherwise to any intellectual property right is granted by this document or in connection with the sale of Olimex products This hardware design of STM32 P107 is neither public not open source Any copying of the product would result in copyright infringement The software is released under open source terms regarding the code written by Olimex Every other else libraries ready to use files etc follow their owner s copyright It is possible that the pictures in this manual differ from the latest revision of the board The product described in this document is subject to continuous development and improvements All particulars of the product and its use contained in this document are given by OLIMEX in good faith However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded This document is intended only to assist the reader in the use of the product OLIMEX Ltd shal
13. gramming and debugging USB_OTG user button two status LEDs and most of the GPIOs are on extension headers where you can connect your additional circuits BOARD FEATURES CPU SIM32F107VCT6 32 bit ARM based microcontroller with 256 KB Flash 64 KB RAM USB OTG Ethernet 10 timers 2 CANs 2 ADCs 14 communication interfaces JTAG connector with ARM 2x10 pin layout for programming debugging USB_OTG connector USB HOST connector 100Mbit Ethernet RS232 Mini SD MMC card connector UEXT connector Power jack Two user buttons RESET button and circuit Two status LEDs Power on LED 3V battery connector Extension port connectors for many of microcontrollers pins PCB FR 4 1 5 mm 0 062 soldermask silkscreen component print Dimensions 132 08x96 52mm 5 2x3 8 ELECTROSTATIC WARNING The STM32 P107 board is shipped in protective anti static packaging The board must not be subject to high electrostatic potentials General practice for working with static sensitive devices should be applied when working with this board Page 3 of 19 BOARD USE REQUIREMENTS Cables The cable you will need depends on the programmer debugger you use If you use ARM JTAG you will need LPT cable if you use ARM USB OCD ARM USB OCD H ARM USB TINY or ARM USB TINY H you will need 1 8 meter USB A B cable for ARM USB OCD and ARM USB OCD H you will need RS232 cable too Hardware Programmer Debugger one of
14. l not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product This evaluation board kit is intended for use for engineering development demonstration or evaluation purposes only and is not considered by OLIMEX to be a finished end product fit for general consumer use Persons handling the product must have electronics training and observe good engineering practice standards As such the goods being provided are not intended to be complete in terms of required design marketing and or manufacturing related protective considerations including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards Olimex currently deals with a variety of customers for products and therefore our arrangement with the user is not exclusive Olimex assumes no liability for applications assistance customer product design software performance or infringement of patents or services described herein THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE COMPONENTS USED TO CREATE STM32 P107 THEY ARE CONSIDERED SUITABLE ONLY FOR STM32 P107 Page 2 of 19 INTRODUCTION STM32 P107 prototype board provides easy way for developing and prototyping with the new STM32F107VCT6 connectivity line microcontroller produced by STMicroelectronics STM32 P107 has JTAG port for pro
15. sers manual Pps per m p 7 m p an 9 E PWR_JACK Pin Signal name USB_ HOST Pin Signal name 5V_HOST_PWR USB_HOST_D e USB HOST D USB OTG 3 USB OTG D RS232 The RS232 port can be used for communication when in bootloader mode To enter bootloader mode you need to close RST_E and BOOTO_E jumpers Note that the default position of those jumpers is closed e g bootloader mode disabled 2468 10 Pine E 12C1_SDA SP13_MISO 1 4 5 2 3 i 8 6 Pin Signal name chip side Signal name chip side SD MMC 3 MctpaT2 2 CS MMC 3 SPISGMOSI 8 MCIDATA 9 Not connected _ MECHANICAL DIMENSIONS 1150m11 20090000000 10000 3800m11
16. the Olimex ARM Programmers ARM JTAG ARM JTAG EW ARM USB OCD ARM USB OCD H ARM USB OCD TINY ARM USB OCD H Note that Olimex OpenOCD debuggers lack SWD interface by default There is the adapter ARM JTAG SWD that adds SWD to any of the programmers debuggers mentioned above Additionally you can use our ARM JTAG COOCOX debugger which has both JTAG and SWD interfaces and works with CooCox IDE natively and with IAR EW and Keil uVision via pluggins Software ARM C compiler PROCESSOR FEATURES STM32 P107 board uses the ARM based 32 bit microcontroller STM32F107VCT6 with the following features Core ARM 32 bit Cortex M3 CPU 72 MHz maximum frequency 1 25 DMIPS MHz Dhrystone 2 1 performance at 0 wait state memory access Single cycle multiplication and hardware division Memories 256 Kbytes of Flash memory 64 Kbytes of SRAM Clock reset and supply management 2 0 to 3 6 V application supply and I Os POR PDR and programmable voltage detector PVD 25 MHz crystal oscillator Internal 8 MHz factory trimmed RC Internal 40 kHz RC with calibration 32 kHz oscillator for RTC with calibration Low power Sleep Stop and Standby modes VBAT supply for RTC and backup registers 2 x 12 bit 1 ps A D converters 16 channels Conversion range 0 to 3 6 V Sample and hold capability Temperature sensor upto 2 MSps in interleaved mode 2 x 12 bit D A converters DMA 12 channel DM
17. y to of C36 1 All element libraries are now updated 2 Ethernet PHY is changed from STE101P to MICREL s one KS8721BLMM 3 All 10uF 6 3V TANT are changed to 0805 and a lot of element names are changed 4 PWR_SEL jumpers are replaced by diodes 5 USART3 is connected to UEXT while USART2 is connected to RS232 and bootloader functionality is enabled Two additional jumpers are added 6 Added UEXT_PWR_E jumper 7 A lot jumpers are added into jumpers description table 1 L2 is now placed further from USB_HOST connector to avoid contact 2 Ethernet PHY Micrel KS8721 is changed to LAN8710A EZC in RMII 3 Changed C18 from 100n to 4 7uF 6 3V according to the datasheet C18 is now renamed C3 4 STAT1 STAT2 and PWR_LED were changed to 0603 and its resistors to 2 2k 5 SD MMC capacitor was replaced by 2x22uF 6 3V capacitors 6 LM3526 was exchanged with MIC2026 1YM and connection between pin 1 and pin4 was swapped because the default EN level is opposite 7 All tantalum capacitors are changed to ceramic 8 Optimizations in the values of few other elements as well 9 R28 0R was changed to 10k C55 10uF 6 3V was added and RST connection was removed from the PHY
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