SLB9645

Trusted Platform Module

Electrical Characteristics

Data Sheet

13

Rev. 1.1, 2014-02-12

Hardware Description

4.4

AC Characteristics

4.5

I2C Standard/Fast Mode Interface Characteristics

The electrical characteristics are compliant to the NXP I²C bus specification [5] and [6] for “standard-mode”

(

f

For printed circuit board design the reduced output fall time

t

to be considered!

Table 10

Device Reset

Parameter

Symbol

Values

Unit

Note / Test Condition

Min.

Typ.

Max.

Reset Pulse Width

t

RST

80

—

—

µs

Cold (power-on) reset

Reset Pulse Width

t

RST

10

—

—

µs

Warm reset

Table 11

I2C Standard Mode Interface Characteristics

Parameter

Symbol

Values

Unit

Note / Test Condition

Min.

Typ.

Max.

SCL clock frequency

f

SCL

0—

100

kHz

—

Output fall time from

V

pin)

t

OF

—

—

75

ns

10 pF

≤ C

SCL fall time (bus line,

output)

t

fSCL

——

25

ns

—

Table 12

I2C Fast Mode Interface Characteristics

Parameter

Symbol

Values

Unit

Note / Test Condition

Min.

Typ.

Max.

SCL clock frequency

f

SCL

0—

400

kHz

—

Hysteresis of input stage

V

HYS

0.05

—

—

V

—

Output fall time from

V

pin)

t

OF

0.4

—

75

ns

10 pF

≤ C

Spikes suppressed by

input filter

t

SP

—

20

—

ns

Input filter implemented for SCL,

not for SDA

SCL fall time (bus line,

output)

t

fSCL

——

25

ns

—

Input current (SCL, SDA)

I

I

-10

—

10

µA

“If VDD is switched off, I/O pins of

fast-mode devices must not

obstruct the SDA and SCL lines” is

not fulfilled.