PNI MicroMag - Manual (Page 2)

Table of Contents
1 COPYRIGHT & WARRANTY INFORMATION ...............................................................4
2 INTRODUCTION .............................................................................................................5
3 SPECIFICATIONS ...........................................................................................................6
3.1 MODULE CHARACTERISTICS .......................................................................6
3.2 TYPICAL OPERATING CHARACTERISTICS .................................................7
3.3 MECHANICAL DRAWINGS .............................................................................9
3.3.1 MicroMag2 ..........................................................................................9
3.3.2 MicroMag2-on-Carrier Board ........................................................... 11
3.3.3 MicroMag3 ....................................................................................... 12
4 SET-UP & INTERFACE LINES .................................................................................... 13
4.1 PCB ORIENTATION AND OUTPUT POLARITIES ...................................... 13
4.2 PIN/PAD CONNECTIONS ............................................................................ 13
4.3 LINE DESCRIPTIONS .................................................................................. 15
4.3.1 SCLK (SPI Serial Clock) .................................................................. 15
4.3.2 MISO (SPI Master In, Slave Out) ..................................................... 16
4.3.3 MOSI (SPI Master Out, Slave In) ..................................................... 16
4.3.4 SSNOT (SPI Slave Select)............................................................... 16
4.3.5 DRDY (Data Ready) ......................................................................... 16
4.3.6 RESET (Reset) ................................................................................ 17
4.3.7 VDD (DC Voltage Input) ................................................................... 17
4.3.8 COMP (Comparator) ........................................................................ 17
4.3.9 DHST (Clock Output) ....................................................................... 17
4.3.10 VSTBY.............................................................................................. 18
5 OPERATION ................................................................................................................. 19
5.1 SPI PORT TIMING ........................................................................................ 19
5.2 COMMAND BYTE ......................................................................................... 21
5.2.1 Axis Select (AS1, AS0) .................................................................... 21
5.2.2 Period Select (PS0, PS1, PS2) ........................................................ 21
5.2.3 Magnetic Oscillator Test (MOT) ....................................................... 22
5.2.4 Oscillator Direction (ODIR)............................................................... 22
5.2.5 High Speed Oscillator Test (DHST) ................................................. 22
5.3 IDLE MODE................................................................................................... 22
5.4 MAKING A MEASUREMENT........................................................................ 23