X24012

10

A.C. CONDITIONS OF TEST

Input Pulse Levels

Input Rise and Fall Times

10ns

Input and Output Timing Levels

3847 PGM T07

Bus Timing

Note:

eters are periodically sampled and not 100% tested.

POWER-UP TIMING

Symbol

Parameter

Max.

Units

t

PUR

(4)

Power-Up to Read Operation

1

ms

Power-Up to Write Operation

5

ms

3847 PGM T09

Read & Write Cycle Limits

Symbol

Parameter

Min.

Max.

Units

SCL Clock Frequency

0

100

KHz

Noise Suppression Time Constant at SCL, SDA Inputs

100

ns

SCL Low to SDA Data Out Valid

0.3

3.5

∝

s

Time the Bus Must Be Free Before a New Transmission Can Start

4.7

∝

s

Start Condition Hold Time

4.0

∝

s

Clock Low Period

4.7

∝

s

Clock High Period

4.0

∝

s

Start Condition Setup Time

4.7

∝

s

Data In Hold Time

0

∝

s

Data In Setup Time

250

ns

SDA and SCL Rise Time

1

∝

s

SDA and SCL Fall Time

300

ns

Stop Condition Setup Time

4.7

∝

s

Data Out Hold Time

300

ns

3847 PGM T08

A.C. CHARACTERISTICS LIMITS (Over recommended operating conditions unless otherwise specified)

EQUIVALENT A.C. LOAD CIRCUIT

3847 FHD F17

3847 FHD F03

t

SU:STA

t

HD:STA

t

HD:DAT

t

SU:DAT

t

LOW

t

SU:STO

t

R

t

BUF

SCL

SDA IN

SDA OUT

t

DH

t

AA

t

F

t

HIGH

5.0V

1533Ο

100pF

Output