MFRC63002R datasheet(101/118 Pages) NXP

101 / 118 page

MFRC630

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Product data sheet

COMPANY PUBLIC

Rev. 3.1 — 6 September 2012

227531

101 of 118

NXP Semiconductors

MFRC630

Contactless reader IC

13.1 Timing characteristics

Remark: To send more bytes in one data stream the NSS signal must be LOW during the

send process. To send more than one data stream the NSS signal must be HIGH between

each data stream.

Fig 29. Pin RX input voltage

001aak012

VMID

0 V

Vmod

Vi(p-p)(max)

Vi(p-p)(min)

13.56 MHz

carrier

Table 193. SPI timing characteristics

Symbol

Parameter

Conditions

Min

Typ

Max Unit

tSCKL

SCK LOW time

tSCKH

SCK HIGH time

th(SCKH-D)

SCK HIGH to data input hold

time

SCK to changing MOSI

tsu(D-SCKH)

data input to SCK HIGH

set-up time

changing MOSI to SCK

th(SCKL-Q)

SCK LOW to data output

hold time

SCK to changing MISO

t(SCKL-NSSH) SCK LOW to NSS HIGH

time

--ns

tNSSH

NSS HIGH time

before communication

Table 194. I2C-bus timing in fast mode and fast mode plus

Symbol Parameter

Conditions

Fast mode

Plus

Unit

Min

Max

Min

Max

fSCL

SCL clock frequency

400

1000 kHz

tHD;STA

hold time (repeated) START

condition

after this period,

the first clock pulse

is generated

600

260

tSU;STA

set-up time for a repeated

START condition

600

260

tSU;STO

set-up time for STOP condition

600

260

tLOW

LOW period of the SCL clock

1300 -

500

tHIGH

HIGH period of the SCL clock

600

260

tHD;DAT

data hold time

900

450

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