GRM21BR71C225KA12L C3, C4 2 Open C16 1 C20 1 D1 1 D2 1
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1 9-; Rev ; / MAXQ0 Evaluation Kit General Description The MAXQ0 evaluation kit (EV kit) provides a proven platform for conveniently evaluating the capabilities of the MAXQ0 low-power, -bit, RISC microcontroller targeted for battery-powered applications. The EV kit includes the MAXQ0 EV kit board, which contains infrared (IR) transmit and receive devices, two RS- serial channels, four -pin headers providing access to the processor s I/O port pins, a V power-supply input, and a bank of eight pushbutton switches for user input. The EV kit includes software, USB-to-JTAG interface board, 0-pin JTAG interface cable, and a standard A-to-mini-B USB cable for connecting to a personal computer. The EV kit provides a complete, functional system ideal for developing and debugging applications as well as evaluating the overall capabilities of the MAXQ0 RISC processor. EV Kit Contents MAXQ0 EV Kit Board USB-to-JTAG Board MAXQ0 EV Kit CD Includes Evaluation Installation of IAR Embedded Workbench for the MAXQ Includes MAXQ0 Data Sheet, MAXQ Family User s Guide and its MAXQ0 Supplement, Application Notes, and Example Programs Including Source Code A-to-mini-B USB Cable DESIGNATION QTY DESCRIPTION Features Easily Load and Debug Code Using Supplied JTAG Board JTAG Interface Provides In-Application Debugging Features Step-by-Step Execution Tracing Breakpointing by Code Address, Data Memory Address, or Register Access Data Memory or Register Content View and Edit On-Board.V Voltage Regulator (Single V Input) Eight User Input Pushbutton Switches Included Level-Shifted RS- Interface for Serial Ports 0 and Prototyping Area Included Board Schematics Provide a Convenient Reference Design Ordering Information PART TEMP RANGE SIZE MAXQ0-KIT# Room.in x.0in #Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. Component List DESIGNATION QTY DESCRIPTION Evaluates: MAXQ0 C, C, C, C, C 0.μF, V XR ceramic capacitors (00) ECJ-VBC0K C, C.μF, V XR ceramic capacitors (00) GRMBRCKAL C, C Open C, C, C9, C, C9 C0 C.0μF, V XR ceramic capacitors (00) C00C0KRACTU 0.μF, V XR ceramic capacitor (00) GRMRCKAD.μF, 0V XR ceramic capacitor (00) LMKBKG-T MAXQ is a registered trademark of Maxim Integrated Products, Inc. C C0 D D 0,000pF, V XR ceramic capacitor (00) ECJ-VBC0K.0μF, V XR ceramic capacitor (00) C00C0KRACTU High-power AlGaAS IR (0nm) T- / (mm) LED HSDL- PIN photodiode 0 ASDL-0-D Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at --9-, or visit Maxim s website at
2 MAXQ0 Evaluation Kit Evaluates: MAXQ0 DESIGNATION QTY DESCRIPTION D D DS DS F J, J J JH JH A, 0V Schottky diode (DO- case) N-T 00W,.0V SMC TVS Zener Unidir SMC.0ATG 0nm super red LEDs (water clear lens) (0) SML-LX0SRC-TR 0.00A, V fast PICO-SMD fuse 09.00UR Right-angle, 9-position connectors, female socket receptacle (gold) -.mm power jack with tapered PC pins CIU Inc. PJ-0B -position 0.00in single-strip connectors Sullins PEC0SAAN Component List (continued) DESIGNATION QTY DESCRIPTION R R R R, R R, R, R, R SW SW9 9 TP TP.k ±%, /0W SMD resistor (00) CRCW00KFKEA 0k ±%, /0W SMD resistor (00) CRCW000K0FKEA.0 ±%, /0W SMD resistor (00) CRCW00R00FNEA.0M ±%, /0W SMD resistors (00) CRCW00M00FKEA 00 ±%, /0W SMD resistors (00) CRCW0000RFKEA SPST-NO pushbutton switches BFS-000P Multipurpose white PC test points 0 JH JH, JH0 JH L P, P, P, P P Q R -position 0.00in single-strip connectors Sullins PEC0SAAN μh SMD power inductor PR-K -position 0.00in single-strip connectors Sullins PEC0SAAN 0-position 0.00in dual-strip connector Sullins PEC0DAAN General-purpose small-signal npn transistor (0V, 00mA TO-9) N90G ±%, /W SMD resistor (0) CRCW0R0JNEA U U U Y μa supply current,.v to.vpowered RS- transceiver with AutoShutdown (0 SSOP) Maxim MAXCAP+ Low-dropout, 00mA linear regulator in SOT ( SOT) Maxim MAXEZK+ -bit microcontroller with infrared module (0 TQFN) and socket Maxim MAXQ0B-0000+, PLASTRONICS_0QN0K00 socket MHz ceramic resonator with capacitor ZTT-.00MT None PCB: MAXQ0 EV Kit Circuit Board AutoShutdown is a trademark of Maxim Integrated Products, Inc.
3 MAXQ0 Evaluation Kit Evaluates: MAXQ0 Figure. MAXQ0 EV Kit Board
4 MAXQ0 Evaluation Kit Evaluates: MAXQ0 P O R T P O R T P O R T J T A G IRTX IRRX MAXQ0 TQFN-0 USER INPUT PUSHBUTTONS SERIAL PORT 0 SERIAL PORT P O R T 0 RESET PROTOTYPING AREA Figure. MAXQ0 EV Kit Board Functional Layout
5 MAXQ0 Evaluation Kit Detailed Description This EV kit must be used in conjunction with the following documents: MAXQ Family User s Guide MAXQ Family User s Guide: MAXQ0 Supplement MAXQ0 Data Sheet MAXQ0 EV Kit Data Sheet (this document) These documents are available on the CD provided with the MAXQ0 EV kit, and are also available on the Maxim website at For a step-by-step guide to using your MAXQ0 EV kit for the first time, refer to Application Note : Getting Started with the MAXQ0 Evaluation Kit and IAR s Embedded Workbench, included on the EV kit CD. This application note covers jumper settings, cable connections, software configuration, and the steps necessary to quickly begin developing and executing programs using this EV kit. The MAXQ0 EV kit board is fully defined in the schematic (Figure ). A short description of the major sections and functions of the board follows. Power Supply The MAXQ0 EV kit board can be powered directly using an external DC power supply applied to connector J. A regulated V (±%), 00mA, center positive,.mm power supply is required. The EV kit board includes a regulator to supply.v power to its circuitry. The serial-to-jtag board can also be used to provide.0v power to the EV kit board (connector P pin ). This capability is enabled by installing jumper JH on the EV kit board and jumper JH on the serial-to-jtag board and applying power to J of the JTAG board. In this configuration, an external power source should not be applied to connector J. Infrared (IR) Interface The MAXQ0 microcontroller provides a dedicated IR timer/counter module to simplify support for IR communication. The IR timer/counter implements two pins (IRTX and IRRX) for supporting IR transmit and receive, respectively. The IRTX output pin can be manipulated high or low using the IRTXOUT bit of the power control register (PWCN) when the IRTX function is not enabled. However, the IRTX pin has no corresponding port pin designation, so the standard port direction (PD), port output (PO), and port input (PI) control status bits are not present. The MAXQ0 EV kit board includes circuitry for both receiving and transmitting IR signals. The IR source is diode D. Its anode is connected to the board s supply through an Ω resistor, and its cathode is connected to the MAXQ0 s IRTX pin (pin 9) when jumper JH is installed. The IR receiving circuitry consists of silicon PIN photodiode D and an npn bipolar transistor with biasing resistors. The photodiode D is intended for IR applications in the 00nm to 00nm range, and the transistor is configured as a common emitter amplifier for the diode. Its collector is connected to the processor s IRRX pin (when JH is installed), and the emitter is connected to the processor s P0. (TBB, pin 0) pin when jumper JH is installed. This allows the processor s port pin to be used as an IR receiver-enable signal. Jumper Functions The MAXQ0 EV kit board contains a number of jumpers to configure its operation. Table describes the jumpers and their function. Serial Port Interface The MAXQ0 s serial ports are both connected to RS- level translators, and these RS- level signals are connected the DB-9 connectors (J and J). A number of jumpers are used to connect various serial signals to the level translator and configure its operation. Table describes these jumper functions. Evaluates: MAXQ0
6 MAXQ0 Evaluation Kit Evaluates: MAXQ0 Table. Jumper Functions NAME JH JH JH JH JH DESCRIPTION Connects pin (FORCEON) of the RS- level translator U to: Pin to : MAXQ0 port pin P. (pin ) Pin to : The board s Connects pin (FORCEOFF) of the RS- level translator U to: Pin to : MAXQ0 port pin P. (pin ) Pin to : The board s Connects TIN (pin ) of the RS- level translator U to: Pin to : The board s Pin to : MAXQ0 port pin P0. (TX0, pin ) Connects TIN (pin ) of the RS- level translator U to: Pin to : The board s Pin to : MAXQ0 port pin P0. (TX, pin ) Connects the board s source to: Pin to : U s regulated.v out (pin ) Pin to : JH Connects the MAXQ0 s supply input (pin ) to the board s source. JH Connects the board s D LED IR emitter to the MAXQ0 s IRTX pin (pin 9). JH Connects the board s D LED IR receiver amplified signal to the MAXQ0 s IRRX pin (pin 0). JH Connects the IR Rx enable to the MAXQ0 s P0. pin (pin 0). JH Connects pin (INVALID) of the RS- level translator U to the MAXQ0 s port pin P. (pin ). JH0 Connects ROUT (pin 9) of the RS- level translator U to the MAXQ0 s port pin P0. input (RX0, pin ). JH Connects ROUT (pin 0) of the RS- level translator U to the MAXQ0 s port pin P0. input (RX, pin ). JH Connects the board s DS LED cathode to the MAXQ0 s port pin P.0 (pin ). JH Connects the board s DS LED cathode to the MAXQ0 s port pin P. (pin ). JH Connects the board s DS LED cathode to the MAXQ0 s port pin P. (pin ). JH Connects the board s DS LED cathode to the MAXQ0 s port pin P. (pin ). JH Connects the board s V0 source to the VCC pin of the JTAG connector (pin ) allowing the JTAG board to source the V power. User Input Pushbuttons The MAXQ0 EV kit board provides eight momentary contact switches intended for user input. Each switch is connected to a separate port pin on the MAXQ0 s port (P. P.0) as illustrated in Table. The other side of each switch is connected to ground. Therefore, by using the weak pullup capability of the port pins, switch closure can be detected by reading a low on the normally high corresponding port pin. Table. Switch Input Connections PORT PIN SWITCH P.0 SW P. SW P. SW P. SW P. SW P. SW P. SW P. SW9
7 MAXQ0 Evaluation Kit General-Purpose Diodes The MAXQ0 EV kit board has four general-purpose LEDs labeled DS, DS, DS, and DS. Each anode is connected to the board s through a 00Ω resistor, and each cathode is connected to a processor port pin through a jumper as specified in Table. By setting the related port pin as an output, each LED can be illuminated by setting the port pin output register bit (PO.x) to a logic 0. Table. General-Purpose LED Connections LED JUMPER PORT PIN DS JH P.0 DS JH P. DS JH P. DS JH P. JTAG Interface A USB-to-JTAG board (provided with the EV kit) is used to program and debug applications running on the MAXQ0 EV kit board. Connect the 0-pin ribbon cable from the JTAG board s J connector to connector P on the MAXQ0 EV kit board, being careful to note the polarity. Tools such as the Microcontroller Tool Kit (MTK) and IAR s Embedded Workbench have built-in support for loading applications through the JTAG interface and using all the MAXQ0 debug functionality (breakpoints, register and memory reading, etc.). Evaluates: MAXQ0
8 MAXQ0 Evaluation Kit Port Access P00 P0 P0 P0 P0 P0 P0 P0 P0 P P P P P P P P0 P P P P P P P P0 P P P P P P P Distribute around PCB V0 D SMC.0ATG V CKT,.V CLAMP P0 P P0 P0 P P P P P IRTX IRRX P00 P0 P0 RXD0 P P0 TXD0 P0 RXD P0 TXD P0 P0 P0 ENRX_N P0 P P P P P Evaluates: MAXQ0 IRTX Low Cost IR Tx P P P C P P P0 00nF P P0 P P R P.K JH IRRX IRRX ENRX_N JH ENRX Broadband IR Rx DUT_ REG P P P TXD0 TXD C.0µF C.µF JH PWR RXD0 RXD JH0 RXD0 RS- Serial P PORT 0 P PORT TP TP TP TP J PJ-0B.0V DC ±%,.MM + F 0.A C.uF 0V C.µF R DUT_ RST_N C P P 00nF P P P P SW BFS-000 JH IRTX D MHz Y Ceramic Resonator ASDL0 (Crystal Optional) Q N90 C P P P open P R.0 D JH F_ON JH F_OFF R.0M JH TXD R.0M JH INVALID C 00nF C 00nF 0 N C9.0µF U LX INVALID FORCEON FORCEOFF VCC TIN TIN ROUT ROUT MAXCAP+ 0 V+ 9 C+ C- V- TOUT TOUT RIN RIN C0 0nF J U IN SHDN OUT BP MAXEZK+ C 0nF TP DB9Female POWER OPTIONS ONBOARD REGULATOR / EXTERNAL x AA CELL JH JTAG_PWR RST_N 0 P VREF nrst VCC TCK TDO TMS KEY TDI P P P P JTAG P PORT 0 P00 P0 P0 P P0 P0 P0 P0 P0 P0 U MAXQ0 C0 L uh C.0µF.0µF JH TXD0 C.0µF P0 P P P P P REGOUT P P IRRX 0 IRTX 9 RESET P P P P P P P 0 P 9 P P P P0 P P HFXOUT HFXIN P PORT JH DUT_ TP REG D HSDL RESET C R 0K open C 00nF J DB9Female JH RXD 9 Figure a. MAXQ0 EV Kit Board Schematic MAXQ, IR, RS- (Sheet of )
9 MAXQ0 Evaluation Kit Evaluates: MAXQ0 P0 P P P P P P P COL0 COL COL COL COL COL COL COL SW BFS-000 SW BFS-000 SW BFS-000 SW BFS-000 SW BFS-000 SW BFS-000 P0 JH DS DS RED R 00 P JH DS DS RED R 00 P JH DS DS RED R 00 P JH DS DS RED R 00 SW SW9 BFS-000 BFS-000 TP TP TP9 C9.0µF TP0 " X " minimum Prototype Area TP TP TP TP Figure b. MAXQ0 EV Kit Board Schematic Pushbuttons (Sheet of ) 9
10 MAXQ0 Evaluation Kit Evaluates: MAXQ0 REVISION NUMBER REVISION DATE DESCRIPTION Revision History PAGES CHANGED 0 0/0 Initial release / Update Features, change serial to USB,, Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 0 Maxim Integrated Products, 0 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
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