X24042
A.C. CONDITIONS OF TEST
EQUIVALENT A.C. LOAD CIRCUIT
5.0V
Input Pulse Levels
V
CC
x 0.1 to V x 0.9
CC
1533Ω
Input Rise and
Fall Times
10ns
Output
I/O Timing Levels
V
CC
x 0.5
100pF
3849 PGM T06
3849 FHD F03
A.C. CHARACTERISTICS LIMITS (Over recommended operating conditions, unless otherwise specified).
READ & WRITE CYCLE LIMITS
Symbol
Parameter
Min.
Max.
Units
t
t
t
t
SCL Clock Frequency
0
100
100
3.5
KHz
ns
SCL
Noise Suppression Time Constant at SCL, SDA Inputs
SCL Low to SDA Data Out Valid
I
0.3
4.7
µs
AA
BUF
Time the Bus Must Be Free Before a
New Transmission Can Start
µs
t
t
t
t
t
t
t
t
t
t
Start Condition Hold Time
Clock Low Period
4.0
4.7
4.0
4.7
0
µs
µs
µs
µs
µs
ns
µs
ns
µs
HD:STA
LOW
Clock High Period
HIGH
SU:STA
HD:DAT
SU:DAT
R
Start Condition Setup Time
Data In Hold Time
Data In Setup Time
250
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Condition Setup Time
Data Out Hold Time
1
300
F
4.7
SU:STO
DH
300
ns
3849 PGM T07
POWER-UP TIMING
Symbol
Parameter
Max.
Units
(4)
t
t
Power-Up to Read Operation
Power-Up to Write Operation
1
5
ms
ms
PUR
(4)
PUW
3849 PGM T08
Bus Timing
SCL
t
t
t
t
HIGH
LOW
R
F
t
t
t
t
t
SU:STO
SU:STA
HD:STA
HD:DAT
SU:DAT
SDA IN
t
t
t
AA
DH
BUF
SDA OUT
3849 FHD F04
Note: (4) t
PUR
and t
are the delays required from the time V is stable until the specified operation can be initiated. These param-
CC
PUW
eters are periodically sampled and not 100% tested.
10
XICOR [ XICOR INC. ]
