Rainbow-electronics MAX3107 Bedienungsanleitung PDF herunterladen (Seite 9)

_______________________________________________________________________________________ 9

MAX3107

SPI/I

C UART with 128-Word FIFOs

and Internal Oscillator

AC ELECTRICAL CHARACTERISTICS (continued)

= +2.35V to +3.6V, V

= +1.71V to +3.6V, V

EXT

= +1.71V to +3.6V, T

= -40NC to +85NC, unless otherwise noted. Typical values

are at V

= +2.8V, V

= +1.8V, V

EXT

= +2.5V, T

= +25NC.) (Note 2)

Note 2: All devices are production tested at T

= +25NC. Specifications over temperature are guaranteed by design.

Note 3: Not production tested. Guaranteed by design.

Note 4: When V

is powered by an external voltage regulator, the external power supply must have current capability above or

equal to I

Note 5: C

is the total capacitance of either the clock or data line of the synchronous bus in pF.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Data Setup Time t

SU:DAT

Standard mode 250

Fast mode 100

Setup Time for Repeated START

(Sr) Condition

SU:STA

Standard mode 4.7

Fast mode 0.6

Rise Time of SDA and SCL

Signals Receiving

Standard mode (0.3 x V

to 0.7 x V

)

(Note 5)

20 +

0.1C

1000

Fast mode (0.3 x V

to 0.7 x V

) (Note 5)

20 +

0.1C

300

Fall Time of SDA and SCL

Signals

Standard mode (0.7 x V

to 0.3 x V

)

(Note 5)

20 +

0.1C

300

Fast mode (0.7 x V

to 0.3 x V

) (Note 5)

20 +

0.1C

300

Setup Time for STOP (P)

Condition

SU:STO

Standard mode 4.7

Fast mode 0.6

Capacitive Load for SDA and

SCL (Note 3)

Standard mode 400

Fast mode 400

I/O Capacitance (SCL, SDA) C

I/O

10 pF

Pulse Width of Spike

Suppressed

50 ns

SPI BUS: TIMING CHARACTERISTICS (see Figure 2)

SCLK Clock Period t

CH+CL

38.4 ns

SCLK Pulse-Width High t

16 ns

SCLK Pulse-Width Low t

16 ns

CS Fall to SCLK Rise Time

CSS

0 ns

DIN Hold Time t

3 ns

DIN Setup Time t

5 ns

Output Data Propagation Delay t

20 ns

DOUT Rise and Fall Times t

10 ns

CS Hold Time

CSH

32 ns

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 50 51

C UART with 128-Word FIFOs 1

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