MAXQ2010-RFX+ datasheet(13/34 Pages) MAXIM

13 / 34 page

16-Bit Mixed-Signal Microcontroller

with LCD Interface

______________________________________________________________________________________

I2C BUS CONTROLLER TIMING (ACTING AS I2C SLAVE)

(VDVDD = VAVDD = 2.7V to 3.6V, TA = -40°C to +85°C.) (Figure 4)

STANDARD MODE

FAST MODE

PARAMETER

SYMBOL

MIN

MAX

MIN

MAX

UNITS

System Frequency

fSYS

0.9

3.60

MHz

Operating Frequency

fI2C

fSYS/8

System Clock Period

tSYS

1/fI2C

μs

Hold Time After (Repeated)

START

tHD:STA

3tSYS

μs

Clock Low Period

tLOW_I2C

5tSYS

μs

Clock High Period

tHIGH_I2C

3tSYS

μs

Setup Time for Repeated START

tSU:STA

5tSYS

μs

Hold Time for Data

tHD:DAT

3.45

0.9

μs

Setup Time for Data

tSU:DAT

250

100

SDA/SCL Fall Time

tF_I2C

300

20 + 0.1CB

300

SDA/SCL Rise Time

tR_I2C

1000

20 + 0.1CB

300

Setup Time for STOP

tSU:STO

3tSYS

μs

Bus-Free Time Between STOP

and START

tBUF

5tSYS

μs

Capacitive Load for Each Bus

Line

400

Noise Margin at the Low Level

for Each Connected Device

(Including Hysteresis)

VNL_I2C

0.1 x VDVDD

Noise Margin at the High Level

for Each Connected Device

(Including Hysteresis)

VNH_I2C

0.2 x VDVDD

SDA

SCL

SSR

tF_I2C

tR_I2C

tLOW

tHIGH

tHD:STA

tSU:DAT

tSU:STA

tSU:STO

tBUF

tHD:DAT

NOTE: TIMING REFERENCED TO VIH_I2C(MIN) AND VIL_I2C(MAX).

Figure 4. I2C Bus Controller Timing Diagram

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