PCF8570 Philips Semiconductors, PCF8570 Datasheet - Page 10

• Manufacturer Part Number: PCF8570
• Description: 256 x 8-bit static low-voltage RAM with I2C-bus interface
• Manufacturer: Philips Semiconductors

Philips Semiconductors
12 AC CHARACTERISTICS
All timing values are valid within the operating supply voltage and ambient temperature range and reference to V
V
Note
1. A detailed description of the I
1999 Jan 06
I
f
t
t
t
t
t
t
t
t
t
t
t
t
handbook, full pagewidth
2
SCL
SP
BUF
SU;STA
HD;STA
LOW
HIGH
r
f
SU;DAT
HD;DAT
VD;DAT
SU;STO
IH
SYMBOL
C-bus timing (see Fig.10; note 1)
256
I
PROTOCOL
SDA
SCL
2
with an input voltage swing of V
use it” . This brochure may be ordered using the code 9398 393 40011.
C-bus interface
8-bit static low-voltage RAM with
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
t
SU;STA
t
BUF
CONDITION
START
(S)
t HD;STA
Fig.10 I
t
LOW
2
2
C-bus timing diagram; rise and fall times refer to V
C-bus specification, with applications, is given in brochure “The I
r t
SS
BIT 7
MSB
(A7)
PARAMETER
to V
t HIGH
DD
.
t
t
SU;DAT
f
1 / f SCL
BIT 6
(A6)
10
t
HD;DAT
(R/W)
BIT 0
LSB
t
VD;DAT
4.7
4.7
4.0
4.7
4.0
250
0
4.0
MIN.
ACKNOWLEDGE
IL
and V
(A)
TYP.
MBD820
IH
.
Product specification
2
100
100
1.0
0.3
3.4
CONDITION
C-bus and how to
MAX.
STOP
PCF8570
(P)
t SU;STO
kHz
ns
ns
ns
s
s
s
s
s
s
s
s
s
UNIT
IL
and