PCF8581CT_F4 View Datasheet(PDF) - Philips Electronics
Part Name
Description
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PCF8581CT_F4 Datasheet PDF : 20 Pages
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Philips Semiconductors
128 × 8-bit EEPROM with I2C-bus interface
Product specification
PCA8581; PCA8581C
11 AC CHARACTERISTICS
All timing values are valid within the operating supply voltage and ambient temperature range and reference to VIL and
VIH with an input voltage swing of VSS to VDD.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
I2C-bus timing (see Fig.11; note 1)
fSCL
tSP
tBUF
tSU;STA
tHD;STA
tLOW
tHIGH
tr
tf
tSU;DAT
tHD;DAT
tVD;DAT
tSU;STO
SCL clock frequency
tolerable spike width on bus
bus free time
START condition set-up time
START condition hold time
SCL LOW time
SCL HIGH time
SCL and SDA rise time
SCL and SDA fall time
data set-up time
data hold time
SCL LOW to data out valid
STOP condition set-up time
−
−
−
−
4.7
−
4.7
−
4.0
−
4.7
−
4.0
−
−
−
−
−
250
−
0
−
−
−
4.0
−
100
kHz
100
ns
−
µs
−
µs
−
µs
−
µs
−
µs
1.0
µs
0.3
µs
−
ns
−
ns
3.4
µs
−
µs
Note
1. A detailed description of the I2C-bus specification, with applications, is given in brochure “The I2C-bus and how to
use it”. This brochure may be ordered using the code 9398 393 40011.
handbook, full pagewidth
PROTOCOL
START
CONDITION
(S)
BIT 7
MSB
(A7)
BIT 6
(A6)
t SU;STA
t LOW t HIGH
1 / f SCL
SCL
t BUF
tr
tf
SDA
BIT 0
LSB
(R/W)
ACKNOWLEDGE
(A)
STOP
CONDITION
(P)
t HD;STA
t SU;DAT
t HD;DAT
t VD;DAT
MBD820
t SU;STO
1997 Apr 02
Fig.11 I2C-bus timing diagram; rise and fall times refer to VIL and VIH.
11
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