X24645
EQUIVALENT A.C. LOAD CIRCUIT
A.C. CONDITIONS OF TEST
VCC x 0.1 to VCC x 0.9
Input Pulse Levels
5V
Input Rise and
Fall Times
10ns
1.53KΟ
Input and Output
Timing Levels
OUTPUT
VCC X 0.5
2783 FRM T08
100pF
2783 ILL F16.1
A.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.) Read
& Write Cycle Limits
Symbol
Parameter
SCL Clock Frequency
Min.
Max.
100
Units
KHz
ns
fSCL
0
TI
100
Noise Suppression Time
Constant at SCL, SDA Inputs
∝s
∝s
tAA
SCL LOW to SDA Data Out Valid
0.3
4.7
3.5
tBUF
Time the Bus Must Be Free Before a
New Transmission Can Start
∝s
∝s
∝s
∝s
tHD:STA
tLOW
Start Condition Hold Time
Clock LOW Period
4
4.7
4
tHIGH
Clock HIGH Period
tSU:STA
4.7
Start Condition Setup Time (for
a Repeated Start Condition)
∝s
tHD:DAT
tSU:DAT
tR
Data In Hold Time
0
Data In Setup Time
250
ns
∝s
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Condition Setup Time
Data Out Hold Time
1
tF
300
ns
∝s
tSU:STO
tDH
4.7
300
ns
2783 FRM T09.2
(4)
POWER-UP TIMING
Symbol
Parameter
Max.
Units
ms
tPUR
Power-up to Read Operation
Power-up to Write Operation
1
5
tPUW
ms
2783 FRM T10
Notes: (4)tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated. These parameters are periodically
sampled and not 100% tested.
12
ICMIC [ IC MICROSYSTEMS ]
