參數(shù)資料
型號: PCA9555N
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 16-bit I2C and SMBus I/O port with interrupt
中文描述: 16 I/O, PIA-GENERAL PURPOSE, PDIP24
封裝: 0.600 INCH, PLASTIC, MO-015, SOT101-1, DIP-24
文件頁數(shù): 15/22頁
文件大小: 185K
代理商: PCA9555N
Philips Semiconductors
Product data sheet
PCA9555
16-bit I
2
C and SMBus I/O port with interrupt
2004 Sep 30
15
AC SPECIFICATIONS
SYMBOL
PARAMETER
STANDARD MODE
I
2
C-BUS
MIN
0
FAST MODE
I
2
C-BUS
MIN
0
UNITS
MAX
100
MAX
400
f
SCL
t
BUF
t
HD;STA
t
SU;STA
t
SU;STO
t
VD;ACK
t
HD;DAT
t
VD;DAT
t
SU;DAT
t
LOW
t
HIGH
t
F
t
R
t
SP
Port Timing
Operating frequency
kHz
μ
s
μ
s
μ
s
μ
s
μ
s
ns
Bus free time between STOP and START conditions
4.7
1.3
Hold time after (repeated) START condition
4.0
0.6
Repeated START condition setup time
4.7
0.6
Setup time for STOP condition
Valid time of ACK condition
2
4.0
0.6
0.3
3.45
0.1
0.9
Data in hold time
Data out valid time
3
0
0
300
50
ns
Data setup time
250
100
ns
μ
s
μ
s
ns
Clock LOW period
4.7
1.3
Clock HIGH period
4.0
0.6
Clock/Data fall time
300
20 + 0.1C
b
1
20 + 0.1C
b
1
300
Clock/Data rise time
1000
300
ns
Pulse width of spikes that must be suppressed by the input filters
50
50
ns
t
PV
t
PS
t
PH
Output data valid
200
200
ns
Input data setup time
150
150
ns
μ
s
Input data hold time
1
1
Interrupt Timing
t
IV
t
IR
Interrupt valid
4
4
μ
s
μ
s
Interrupt reset
4
4
NOTES:
1. C
b
= total capacitance of one bus line in pF.
2. t
VD;ACK
= time for Acknowledgement signal from SCL LOW to SDA (out) LOW.
3. t
VD;DAT
= minimum time for SDA data out to be valid following SCL LOW.
SDA
SCL
SU01469
t
HD;STA
t
F
S
t
LOW
t
R
t
HD;DAT
t
SU;DAT
t
HIGH
t
F
t
SU;STA
S
R
t
HD;STA
t
SP
t
SU;STD
P
t
R
t
BUF
S
Figure 15. Definition of timing
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