MCP3421

DS22003E-page 24

© 2009 Microchip Technology Inc.

TABLE 5-4:

Electrical Specifications: Unless otherwise specified, all limits are specified for T

Parameters

Sym

Min

Typ

Max

Units

Conditions

Standard Mode (100 kHz)

Clock frequency

—

—

100

kHz

Clock high time

THIGH

4000

—

—

ns

Clock low time

TLOW

4700

—

—

ns

SDA and SCL rise time

TR

—

—

1000

ns

SDA and SCL fall time

TF

—

—

300

ns

START condition hold time

THD:STA

4000

—

—

ns

START (Repeated) condition

setup time

TSU:STA

4700

—

—

ns

Data hold time

THD:DAT

0

—

3450

ns

(

Note 3)

Data input setup time

TSU:DAT

250

—

—

ns

STOP condition setup time

TSU:STO

4000

—

—

ns

Output valid from clock

TAA

0

—

3750

ns

(

Note 2, Note 3)

Bus free time

TBUF

4700

—

—

ns

Time between START and

STOP conditions.

Fast Mode (400 kHz)

Clock frequency

TSCL

—

—

400

kHz

Clock high time

THIGH

600

—

—

ns

Clock low time

TLOW

1300

—

—

ns

SDA and SCL rise time

TR

20 + 0.1Cb

—

300

ns

SDA and SCL fall time

TF

20 + 0.1Cb

—

300

ns

START condition hold time

THD:STA

600

—

—

ns

START (Repeated) condition

setup time

TSU:STA

600

—

—

ns

Data hold time

THD:DAT

0

—

900

ns

(

Note 4)

Data input setup time

TSU:DAT

100

—

—

ns

STOP condition setup time

TSU:STO

600

—

—

ns

Output valid from clock

TAA

0

—

1200

ns

(

Note 2, Note 3)

Bus free time

TBUF

1300

—

—

ns

Time between START and

STOP conditions.

Note 1: This parameter is ensured by characterization and not 100% tested.

3: If this parameter is too short, it can create an unintended Start or Stop condition to other devices on the

4: For Data Input: This parameter must be longer than t