pca9506 NXP Semiconductors, pca9506 Datasheet - Page 22

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pca9506

Manufacturer Part Number
pca9506
Description
40-bit I2c-bus I/o Port With Reset, Oe, And Int
Manufacturer
NXP Semiconductors
Datasheet

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Product data sheet
Fig 16. Definition of timing on the I
Fig 17. I
The maximum t
250 ns. This allows series protection resistors to be connected between the SDA and the SCL pins and the SDA/SCL bus lines without
exceeding the maximum specified t
C
Input filters on the SDA and SCL inputs suppress noise spikes less than 50 ns.
b
SDA
SCL
= total capacitance of one bus line in pF.
Rise and fall times refer to V
2
C-bus timing diagram
P
t
BUF
protocol
SDA
f
SCL
for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time for the SDA output stage t
S
t
SU;STA
t
t
HD;STA
BUF
condition
t
LOW
START
(S)
t
HD;STA
IL
f
.
and V
2
C-bus
t
t
t
LOW
r
HD;DAT
t
r
IH
.
MSB
bit 7
(A7)
t
HIGH
Rev. 01 — 14 February 2006
t
t
HIGH
SU;DAT
t
f
1
/f
bit 6
(A6)
SCL
t
f
t
HD;DAT
t
SU;DAT
40-bit I
(R/W)
bit 0
t
VD;DAT
2
acknowledge
C-bus I/O port with RESET, OE, and INT
Sr
(A)
t
SU;STA
t
HD;STA
t
VD;ACK
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
condition
STOP
(P)
t
SU;STO
002aab175
t
SP
t
SU;STO
PCA9506
002aaa986
f
is specified at
P
22 of 30

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