pca9539d NXP Semiconductors, pca9539d Datasheet - Page 14

• Manufacturer Part Number: pca9539d
• Description: 16-bit I2c And Smbus, Low Power I/o Port With Interrupt And Reset
• Manufacturer: NXP Semiconductors

1. C
2. t
3. t
4. t
5. Resetting the device while actively communicating on the bus may cause glitches or errant STOP conditions.
6. Upon reset, the full delay will be the sum of t
Philips Semiconductors
AC CHARACTERISTICS
NOTES:
2006 Sep 21
16-bit I
I/O port with interrupt and reset
SYMBOL
Port Timing
Interrupt Timing
RESET
t
RESET
t
t
t
t
t
t
t
VD;ACK
HD;STA
SU;STA
SU;STO
HD;DAT
VD;DAT
SU;DAT
t
t
t
f
t
HIGH
VD;ACK
VD;DAT
PV
LOW
SCL
BUF
t
t
t
t
REC
t
t
t
t
PH
b
t
SP
PV
PS
IR
IV
W
F
R
= total capacitance of one bus line in pF.
measured from 0.7V
5,6
= minimum time for SDA data out to be valid following SCL LOW.
= time for Acknowledgement signal from SCL LOW to SDA (out) LOW.
SDA
SCL
2
Operating frequency
Bus free time between STOP and START conditions
Hold time after (repeated) START condition
Repeated START condition setup time
Set-up time for STOP condition
Valid time of ACK condition
Data in hold time
Data out valid time
Data set-up time
Clock LOW period
Clock HIGH period
Clock/Data fall time
Clock/Data rise time
Pulse width of spikes that must be suppressed by the input filters
Output data valid
Input data set-up time
Input data hold time
Interrupt valid
Interrupt reset
C-bus and SMBus low power
Reset pulse width
Reset recovery time
Time to reset
t
F
S
DD
on SCL to 50% I/O output.
t
HD;STA
3
t
LOW
t
PARAMETER
R
2
t
HD;DAT
t
SU;DAT
RESET
t
HIGH
and the RC time constant of the SDA bus.
Figure 14. Definition of timing
t
F
t
SU;STA
14
S
R
t
HD;STA
STANDARD MODE
MIN
300
250
150
400
4.7
4.0
4.7
4.0
0.3
4.7
4.0
—
—
—
—
—
—
0
0
1
4
0
I
2
C-bus
MAX
1000
3.45
100
300
200
t
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
SP
4
4
t
SU;STD
20 + 0.1C
20 + 0.1C
t
R
MIN
P
100
150
400
1.3
0.6
0.6
0.6
0.1
1.3
0.6
50
FAST MODE
—
—
—
—
0
0
1
4
0
I
2
t
C-bus
BUF
b
b
1
1
S
PCA9539
MAX
Product data sheet
400
300
300
200
0.9
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4
4
SU01469
UNITS
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s
s
s
s
s
s
s
s