MFRC522 datasheet(105/109 Pages) NXP

105 / 109 page

112132

Product data sheet

Rev. 3.2 — 22 May 2007

105 of 109

continued >>

NXP Semiconductors

MFRC522

Contactless Reader IC

Table 131: Reserved register (address 3Eh); reset

value: 03h. . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 132:Description of Reserved register bits . . . 45

Table 133:Reserved register (address 3Fh); reset

value: 00h. . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 134:Description of Reserved register bits . . . 45

Table 135:Connection Scheme for detecting the

different Interface Types . . . . . . . . . . . . . . 46

Table 136:Byte Order for MOSI and MISO . . . . . . . 47

Table 137:Byte Order for MOSI and MISO . . . . . . . 48

Table 138.Address byte 0 register; address MOSI . 48

Table 139:Settings of BR_T0 and BR_T1 . . . . . . . . 49

Table 140:Selectable transfer speeds . . . . . . . . . . . 49

Table 141:UART Framing . . . . . . . . . . . . . . . . . . . . 50

Table 142:Byte Order to Read Data . . . . . . . . . . . . 50

Table 143:Byte Order to Write Data. . . . . . . . . . . . . 51

Table 144.Address byte 0 register; address MOSI . 51

Table 145:Settings for TX1 . . . . . . . . . . . . . . . . . . . 61

Table 146:Settings for TX2 . . . . . . . . . . . . . . . . . . . 62

Table 147:CRC co-processor parameters . . . . . . . . 64

Table 148:Interrupt Sources . . . . . . . . . . . . . . . . . . 68

Table 149:Command overview . . . . . . . . . . . . . . . . 72

Table 150:TestSel2Reg register (address 07h) . . . . 76

Table 151:Description of Testsignals . . . . . . . . . . . . 77

Table 152:TestSel2Reg register (address 0Dh). . . . 77

Table 153:Description of Testsignals . . . . . . . . . . . . 77

Table 154:Testsignals description . . . . . . . . . . . . . . 77

Table 155.Limiting values . . . . . . . . . . . . . . . . . . . . 83

Table 156:Operating conditions . . . . . . . . . . . . . . . 83

Table 157:Thermal characteristics . . . . . . . . . . . . . 83

Table 158:Input Pin characteristics for pins EA, I2C

and NRESET . . . . . . . . . . . . . . . . . . . . . . 84

Table 159:Input Pin characteristics for MFIN. . . . . . 84

Table 160:Input/Output Pin characteristics for pins D1,

D2, D3, D4, D5, D6 and D7 . . . . . . . . . . . 84

Table 161:Input Pin characteristics for pin SDA . . . 84

Table 162:Output Pin characteristics for Pin MFOUT .

Table 163: Output Pin characteristics for Pin IRQ . . 85

Table 164: Input Pin characteristics for Pin Rx . . . . 85

Table 165:Input Pin characteristics for OSCIN . . . . 85

Table 166: Output Pin characteristics for Pins AUX1

and AUX2 . . . . . . . . . . . . . . . . . . . . . . . . . 86

Table 167: Output Pin characteristics for Pins TX1 and

TX2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Table 168: Current Consumption. . . . . . . . . . . . . . . 87

Table 169: RX Input Voltage Range . . . . . . . . . . . . 88

Table 170: RX Input Sensitivity . . . . . . . . . . . . . . . . 88

Table 171: Clock Frequency . . . . . . . . . . . . . . . . . . 88

Table 172: XTAL Oscillator . . . . . . . . . . . . . . . . . . . 89

Table 173: XTAL Oscillator . . . . . . . . . . . . . . . . . . . 89

Table 174: Timing Specification for SPI. . . . . . . . . . 90

Table 175.Overview I2C Timing in Fast mode. . . . . 91

Table 176:Abbreviations . . . . . . . . . . . . . . . . . . . . . 97

Table 177:Revision history . . . . . . . . . . . . . . . . . . . 98

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