general description the MAX3232PMB1 peripheral module provides the necessary hardware to interface the max3232e true rs-232 transceiver to any system that utilizes pmod tm - compatible expansion ports configurable for uart com - munication. the ic has two receivers and two transmit - ters that are used to implement rs-232 data transmit and receive channels along with optional cts and rts handshaking. the rs-232 side input and output levels are true rs-232, achieved by incorporation of a dual internal charge pump. refer to the max3232e ic data sheet for detailed infor - mation regarding operation of the ic. features s transmitter output and receiver inputs protected to q 15kv s implements rs-232 dce s true rs-232 levels from single 3.3v supply s 6-pin pmod-compatible connector (pmod interface type 4 uart) s rohs compliant s proven pcb layout s fully assembled and tested _________________________________________________________________ maxim integrated products 1 MAX3232PMB1 peripheral module 19-6319; rev 0; 5/12 ordering information appears at end of data sheet. pmod is a trademark of digilent inc. MAX3232PMB1 peripheral module for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxims website at www.maxim-ic.com.
designation qty description c1 1 2.2 f f q 10%, 10v x5r ceramic capacitor (0603) tdk c1608x5r1a225k/0.80 c2Cc6 5 0.1 f f q 10%, 16v x7r ceramic capacitors (0603) murata grm188r71c104ka01d j1 1 6-pin right-angle male header j2 1 right-angle db9 female connector designation qty description jp1 1 4-pin (2 x 2) straight male header r1Cr4 4 150 i q 5% resistors (0603) u1 1 3.0v to 5.5v rs-232 transceiver (16 tssop) maxim max3232eeue+ 2 shorting jumper 1 pcb: epcb3232pm1 supplier phone website murata electronics north america, inc. 770-436-1300 www.murata-northamerica.com tdk corp. 847-803-6100 www.component.tdk.com pin signal description 1 cts-h clear to send. this pin carries the clear- to-send signal from the connected dte to the pmod system. 2 txd-h host transmit. this pin carries the transmit data from the pmod system uart transmitter to a connected dte receiver. 3 rxd-h host receive. this pin carries the receive data from the connected dte transmitter to the pmod systems uart receiver. 4 rts-h ready to send. this pin carries the ready to send signal from the pmod system to a connected dte. 5 gnd ground 6 vcc power supply _________________________________________________________________ maxim integrated products 2 component list component suppliers note: indicate that you are using the MAX3232PMB1 when contacting these component suppliers. detailed description uart interface the MAX3232PMB1 peripheral module can interface to the host by plugging directly into a pmod-compatible port (configured for uart) through connector j1. j1 provides connection of the module to the pmod host. the pin functions and pin assignments adhere to the pmod uart type 4 standard recommended by digilent. see table 1. this j2 connector is meant to interface to a data terminal (dte) through a standard rs-232 cable or a dce device through a null-modem rs-232 cable. see table 2. jumper jp1 (cts/rts) this jumper port allows cts and rts to be passed through, looped back, or disconnected from the local and remote system. in most applications, these jumpers should be set in pass-through mode with pins 1-2 and 3-4 shorted. table 1. connector j1 (uart communication) MAX3232PMB1 peripheral module
pin signal description 1 dcd carrier detect. carrier detect is shorted to pins 1, 4, and 6. 2 txd rs-232 transmit from pmod system to the dte 3 rxd rs-232 receive from the dte to the pmod system 4 dtr data terminal ready. shorted to pins 1, 4, and 6. 5 gnd rs-232 signal and shield ground 6 dsr data set ready. shorted to pins 1, 4, and 6. 7 cts clear to send. cts from dte to the pmod system. 8 rts ready to send. rts from pmod system to the dte. 9 ri ring indicator. not connected. _________________________________________________________________ maxim integrated products 3 table 2. connector j2 (female db9) software and fpga code example software and drivers are available that execute directly without modification on several fpga devel - opment boards that support an integrated or synthe - sized microprocessor. these boards include the digilent nexys 3, avnet lx9, and avnet zedboard, although other platforms can be added over time. maxim provides complete xilinx ise projects containing hdl, platform studio, and sdk projects. in addition, a synthesized bit stream, ready for fpga download, is provided for the demonstration application. the software project (for the sdk) contains several source files intended to accelerate customer evalu - ation and design. these include a base application (maximmodules.c) that demonstrates module function - ality and uses an api interface (maximdevicespecific utilities.c) to set and access maxim device functions within a specific module. the source code is written in standard ansi c format, and all api documentation including theory/operation, register description, and function prototypes are documented in the api interface file (maximdevicespecificutilities.h & .c). the complete software kit is available for download at www.maxim-ic.com . quick start instructions are also available as a separate document. MAX3232PMB1 peripheral module
ct s-h tx d- h rt s-h rx d- h gn d vc c 2. 2uf c1 vc c gn d c1 + 1 c1 - 3 t1 in 11 r1 ou t 12 t2 in 10 r2 ou t 9 v- 6 gn d 15 v+ 2 r2 in 8 t2 ou t 7 r1 in 13 t1 ou t 14 c2 - 5 c2 + 4 vc c 16 ma x3 232 u1 vc c gn d 15 0 r2 15 0 r4 vc c gn d 1 6 2 7 3 8 4 9 5 s1 s2 j2 1 2 3 4 jp 1 gn d 15 0 r1 15 0 r3 1 2 3 4 5 6 j1 .1 uf c2 .1 uf c3 .1 uf c4 .1 uf c5 .1 uf c6 tx d ct s rx d rt s "p mo d" is a tr ad em ar k of di gi le n t, in c. fo ll ow s di gi le nt pm od in te rf ac e ty pe 4 (u ar t) pi no ut co nv en ti on tx d rt s rx d ct s _________________________________________________________________ maxim integrated products 4 figure 1. MAX3232PMB1 peripheral module schematic MAX3232PMB1 peripheral module
_________________________________________________________________ maxim integrated products 5 figure 2. MAX3232PMB1 peripheral module component placement guidecomponent side figure 3. MAX3232PMB1 peripheral module pcb layoutcomponent side MAX3232PMB1 peripheral module
_________________________________________________________________ maxim integrated products 6 figure 4. MAX3232PMB1 peripheral module pcb layoutinner layer 1 (power) figure 5. MAX3232PMB1 peripheral module pcb layoutinner layer 2 (ground) MAX3232PMB1 peripheral module
_________________________________________________________________ maxim integrated products 7 figure 6. MAX3232PMB1 peripheral module pcb layoutsolder side figure 7. MAX3232PMB1 peripheral module component placement guidesolder side MAX3232PMB1 peripheral module
part type MAX3232PMB1# peripheral module _________________________________________________________________ maxim integrated products 8 ordering information # denotes rohs compliant. MAX3232PMB1 peripheral module
revision number revision date description pages changed 0 5/12 initial release 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. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 9 ? 2012 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history MAX3232PMB1 peripheral module
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