X24012
A.C. CONDITIONS OF TEST
EQUIVALENT A.C. LOAD CIRCUIT
5.0V
V
CC
x 0.1 to V x 0.9
CC
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Levels
10ns
1533Ο
V
x 0.5
CC
Output
3847 PGM T07
100pF
3847 FHD F17
A.C. CHARACTERISTICS LIMITS (Over recommended operating conditions unless otherwise specified)
Read & Write Cycle Limits
Symbol
Parameter
Min.
Max.
Units
f
SCL Clock Frequency
0
100
100
3.5
KHz
SCL
T
Noise Suppression Time Constant at SCL, SDA Inputs
SCL Low to SDA Data Out Valid
Time the Bus Must Be Free Before a New Transmission Can Start
Start Condition Hold Time
ns
∝s
I
t
AA
0.3
4.7
4.0
4.7
4.0
4.7
0
∝s
∝s
∝s
∝s
∝s
∝s
t
BUF
t
HD:STA
t
Clock Low Period
LOW
t
Clock High Period
HIGH
t
Start Condition Setup Time
Data In Hold Time
SU:STA
tHD:DAT
t
Data In Setup Time
250
ns
∝s
SU:DAT
t
R
SDA and SCL Rise Time
1
t
SDA and SCL Fall Time
300
ns
∝s
F
tSU:STO
Stop Condition Setup Time
Data Out Hold Time
4.7
t
300
ns
3847 PGM T08
DH
POWER-UP TIMING
Symbol
Parameter
Max.
Units
(4)
tPUR
Power-Up to Read Operation
Power-Up to Write Operation
1
5
ms
ms
(4)
tPUW
3847 PGM T09
Bus Timing
t
t
t
R
t
F
HIGH
LOW
SCL
t
t
t
t
t
SU:STA
HD:STA
HD:DAT
SU:DAT
SU:STO
SDA IN
t
AA
t
DH
t
BUF
SDA OUT
3847 FHD F03
Note: (4)t
and t
are the delays required from the time V
is stable until the specified operation can be initiated. These param-
PUR PUW
eters are periodically sampled and not 100% tested.
CC
10