ADE7858 datasheet(7/76 Pages) AD

Part #	ADE7858

Description	Poly Phase Multifunction Energy Metering IC with per Phase Active and Reactive Powers

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Preliminary Technical Data

ADE7858

Rev. PrA | Page 7 of 76

TIMING CHARACTERISTICS

VDD = 3.3 V ± 10%, AGND = DGND = 0 V, on-chip reference, CLKIN = 16.384 MHz , TMIN to TMAX = −40°C to +85°C.

Table 2. I2C Compatible Interface Timing Parameter

Standard mode

Fast Mode

Parameter

Symbol

Min

Max

Min

Max

Unit

SCL clock frequency

fSCL

0

100

0

400

kHz

Hold time (repeated) START condition.

tHD;STA

4.0

0.6

μs

LOW period of SCL clock

tLOW

4.7

1.3

μs

HIGH period of SCL clock

tHIGH

4.0

0.6

μs

Set-up time for a repeated START condition

tSU;STA

4.7

0.6

μs

Data hold time

tHD;DAT

0

3.45

0

0.9

μs

Data setup time

tSU;DAT

250

100

ns

Rise time of both SDA and SCL signals

tr

1000

20

300

ns

Fall time of both SDA and SCL signals

tf

300

20

300

ns

Setup time for STOP condition

tSU;STO

4.0

0.6

μs

Bus free time between a STOP and START condition

tBUF

4.7

1.3

μs

Pulse width of suppressed spikes

tSP

na

50

ns

SDA

SCLK

t

f

START

CONDITION

START

CONDITION

STOP

CONDITION

t

LOW

t

r

t

SU;DAT

t

f

t

HD;STA

t

BUF

t

r

t

SU;STO

t

SU;STA

t

HIGH

t

HD;DAT

t

HD;STA

REPEATED START

CONDITION

t

SP

Figure 2. I2C Compatible Interface Timing

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