UCS2112 datasheet(4/64 Pages) MICROCHIP

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UCS2112

DS20005424B-page 4

 2015 Microchip Technology Inc.

I/O Pins - SMCLK, SMDATA, PWR_EN, ALERT#, A_DET#, BOOST# - DC Parameters

Output Low Voltage

VOL

——

0.4

ISINK_IO = 8 mA

SMDATA, ALERT#, A_DET#,

BOOST#

Input High Voltage

VIH

2.0

—

PWR_EN, SMDATA, SMCLK

Input Low Voltage

VIL

—

0.8

PWR_EN, SMDATA, SMCLK

Leakage Current

ILEAK

—

±5

µA

Powered or unpowered

VPULLUP  VDD

TA < 85°C (Note 1)

Interrupt Pins - AC Parameters

ALERT# Pin Blanking Time

tBLANK

—

Blanking time, coming out of

reset

ALERT# Pin Interrupt

Masking Time

tMASK

—5

—

BOOST# Pin Minimum

Assertion Time

tBOOST_MAT

—1

—

BOOST# Pin Assertion

Current

IBOOST

—1.9

—

SMBus/I2C™ Timing

Input Capacitance

CIN

—5

—

Clock Frequency

fSMB

—

400

kHz

Spike Suppression

tSP

—

Bus Free Time Stop to Start

tBUF

1.3

—

µs

Start Setup Time

tSU:STA

0.6

—

µs

Start Hold Time

tHD:STA

0.6

—

µs

Stop Setup Time

tSU:STO

0.6

—

µs

Data Hold Time

tHD:DAT

—

µs

When transmitting to the master

Data Hold Time

tHD:DAT

0.3

—

µs

When receiving from the master

Data Setup Time

tSU:DAT

0.6

—

µs

Clock Low Period

tLOW

1.3

—

µs

Clock High Period

tHIGH

0.6

—

µs

Clock / Data Fall Time

tFALL

—

300

Min = 20+0.1CLOAD ns

(Note 1)

Clock / Data Rise Time

tRISE

—

300

Min = 20+0.1CLOAD ns

(Note 1)

Capacitive Load

CLOAD

—

400

Per bus line (Note 1)

Timeout

tTIMEOUT

—

Disabled by default (Note 1)

Idle Reset

tIDLE_RESET

350

—

µs

Disabled by default (Note 1)

TABLE 1-2:

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics:

Unless otherwise specified, VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V,

VPULLUP = 3V to 5.5V, TA = -40°C to 105°C. All typical values at VDD = VS = 5V, TA = 27°C.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Note

This parameter is characterized, not 100% tested.

This parameter is ensured by design and not 100% tested.

The current measurement full scale range maximum value is 3.4A. However, the UCS2112 cannot report values above

ILIM (if IBUS_R2MIN  ILIM) or above IBUS_R2MIN (if IBUS_R2MIN > ILIM and ILIM  1.6A).

This parameter is characterized, not 100% production tested.

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