MAXQ2010-RFX+ datasheet(11/34 Pages) MAXIM

11 / 34 page

16-Bit Mixed-Signal Microcontroller

with LCD Interface

______________________________________________________________________________________

I2C BUS CONTROLLER TIMING

(VDVDD = VAVDD = 2.7V to 3.6V, TA = -40°C to +85°C.) (Note 22) (Figure 4)

STANDARD MODE

FAST MODE

PARAMETER

SYMBOL

MIN

MAX

MIN

MAX

UNITS

Operating Frequency

fI2C

100

400

kHz

Hold Time After (Repeated)

START

tHD:STA

4.0

0.6

μs

Clock Low Period

tLOW_I2C

4.7

1.3

μs

Clock High Period

tHIGH_I2C

4.0

0.6

μs

Setup Time for Repeated START

tSU:STA

4.7

0.6

μs

Hold Time for Data

tHD:DAT

(Note 23)

3.45

(Note 24)

(Note 23)

0.9

(Note 24)

μs

Setup Time for Data

tSU:DAT

250

100

(Note 25)

SDA/SCL Fall Time

tF_I2C

300

20 + 0.1CB

(Note 26)

300

SDA/SCL Rise Time

tR_I2C

1000

20 + 0.1CB

(Note 26)

300

Setup Time for STOP

tSU:STO

4.0

0.6

μs

Bus-Free Time Between STOP

and START

tBUF

4.7

1.3

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

Note 22: All values referenced to VIH_I2C(MIN) and VIL_I2C(MAX).

Note 23: A device must internally provide a hold time of at least 300ns for the SDA signal (referred to as the VIH_I2C(MIN) of the SCL

signal) to bridge the undefined region of the falling edge of SCL.

Note 24: The maximum tHD:DAT need only be met if the device does not stretch the low period (tLOW_I2C) of the SCL signal.

Note 25: A fast-mode I2C bus device can be used in a standard-mode I2C bus system, but the requirement tSU:DAT

≥ 250ns must

be met. This is automatically the case if the device does not stretch the low period of the SCL signal. If such a device does

stretch the low period of the SCL signal, it must output the next data bit to the SDA line tR_I2C(MAX) + tSU:DAT = 1000 + 250

= 1250ns (according to the standard-mode I2C specification) before the SCL line is released.

Note 26: CB—Total capacitance of one bus line in pF.

MAXQ2010-RFX+ Datasheet(PDF) 11 Page - Maxim Integrated Products

MAXQ2010-RFX+ Datasheet(HTML) 11 Page - Maxim Integrated Products

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

Datasheet Download

Link URL