STLED325 datasheet(36/62 Pages) STMICROELECTRONICS

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Electrical ratings

STLED325

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Doc ID 17576 Rev 1

)

Note:

The transmitter must internally provide a hold time to bridge the undefined region (300ns

max) of the falling edge of the SCL.

Table 15.

Power supply characteristics (TA = -40 to 85°C)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

ICC

Operating power supply

current

All blocks of chip ON except

that no display load

VCC = 5.5V

TBD

ICC(Q)

Quiescent supply current

Display OFF

VCC = 5.5V

2mA

Table 16.

Dynamic switching characteristics (TA = -40 to +85 °C, VCC = 5.0V ± 10%,

GND=0.0V, Typical values are at 25°C)

Symbol

Parameter

Min

Typ

Max

Units

fSCL

SCL clock frequency

400

kHz

tLOW

Clock low period

1.3

µs

tHIGH

Clock high period

600

SDA and SCL rise time

300

SDA and SCL fall time

300

tHD:STA

START condition hold time

(after this period the first clock pulse is

generated)

600

tSU:STA

START condition setup time

(only relevant for a repeated start condition)

600

tSU:DAT

Data setup time*

100

tHD:DAT

Data hold time

µs

tSU:STO

STOP condition setup time

600

tBUF

Time the bus must be free before a new

transmission can start

1.3

µs

trec

Watchdog output pulse width

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