—— microchip Technology Inc. MICROCHIP microID™ 125 kHz DESIGN GUIDE pe Using the microlD™ Programmer = 1.0 INTRODUCTION The following is a description of bow lo program Microchip's MCRE2XX family of RID products, A con tactless programmer (PG103001), user interface software (FLABBY, and a host computer are needed w program the MCRF2XX devices. The device can aide be programmed in a standard terminal mode (ie. cwindowsiterminal.exe) rather than the FLAB. See Figure +1 for the programming sequence.
microID™ 125 kHz resign &sue 20 PROGRAMMING SIGNAL WAVEFORM Figure 2-1 shows the waveform of the programming signal. Once the programmer Sends a Pow Gr-UD and gap signal 1o the devices, the device transmits back 2 verification millstream in FSK. The verification signal represents the contents of the memory in the device. “The blank device has all ‘1's in its memory. Apt? in FSK is represented by a low signal level for five cycles and a high signal level for an additional five cycles (Figure 2-1).
TOTE FREER AE NEARS FR Au ad BRE TERMITE Ce re —— FIGURE 2-1: CON TACTLESS PROGRAMMING WAVEFORM with 2 power. yp 2 gap signal {o [the hes signals i 9 check, d establish 5 Program. @ Ihe device cognac, back the canon of yg ts back with he Blank it is ready 1 be pry. blank, the programmer, tis programming, out of the programming wil transmit back a a). The modulation © amplitude (constant Astor, RS in the micro ed to provide a proper a 2 signal level is about cob Ths calibrator a0 3.0. eta 1.
3.0 CALIBRATION OF PROGRAMMING VOLTAGE i you are using your own tag coil {with resonant capacitor) with the MCRF200 or MCRF250, you may ends lo calibrate the programmer for your circuit, Follow this procedure, il you are unable to program tout tag. a) Open the programmer, and tum FS and RE ful counter-clockwise. Remove the four craws at the back of the programmer. 1) Set up the programmer and calibration tag as shown in Figure 3-1. Set Up: Conn pet the +3 VDC power supply to the programmer.
\B for the far your tag. txt BOX. i send the typical signal op at the tag nge. rammed, it data for verified correctly, 2 drones with a ; successful. succession dus to veils, & Message blissful will appear In tis case. AY ed to provide a # lo the tag cof. cements, reprogramming is suc (wise one more od for each pass ry 0) ted successfully 3s for future proviso calibration has scion tag from the our S Crows. ald ZR AND N TAG COIL INT FOR ING SIGNAL MEASUREMENT Pace your oil to cont of the 6¢ outlined area.
microlD™ 125 kHz Design Guide FIGURE 4-1: PROGRAMMING FLOWCHART USING FLAB san} Check Cal Connection and COM Fort Place a blank tag on programmer Click “Programmer” Mani Aleutian in FLAB. Se Click “COM Port” Menu Salton ge Select a COM Port Beriberi Er tor massage with a Device not Blank” “Acoustic the Programming Fowler-up ‘Signal Level {RS} or fry 2 now tag. {Due to rot blank — Programmet™ no power-up and roe connection ok? Yas Click “Blank Check” Button in FLAB.
50 PROGRAMMING INA STANDARD TERMINAL MODE in spacial cases, the device can also be programmed in a sanded terminal mode by executing the terminal exe program {predetermination exe} or by any customer production software. The programmer setup, signal waveform, anc calibration procedure are the same as programming with the FLAB. The following is a description of how Lo interface a host computer to Microchip's con tactless programmer without the use of FLAB software.
| technology inc. microID™ 125 kHz Design Guide BALES ASS CHARACTER SET Most Significant Characters Hex NUL Bie | Space SOH STX DC2 ETX 0C3 ECT ENG | NAK ACK Boll ETS TAN SUB DEL 1998 Microchip Technology Ine.
microID™ 125 kHz Design Guide Cm 6.0 microfD™ PROGRAMMER SCHEMATIC 7.0 x Hom a — DS51130A-page 126 © 1998 Microchip Technology inc.
Instruction to the User This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
