saa5264 NXP Semiconductors, saa5264 Datasheet - Page 14

• Manufacturer Part Number: saa5264
• Description: 10 And 1 Page Intelligent Teletext Decoders
• Manufacturer: NXP Semiconductors

Philips Semiconductors
I
Notes
1. A device must internally provide a hold time of at least 300 ns for the SDA signal (referenced to the V
2. The maximum t
3. A fast-mode I
4. C
2000 Jan 27
2
f
t
t
t
t
t
t
t
t
t
t
C
SCL
BUF
HD;STA
LOW
HIGH
SU;STA
HD;DAT
SU;DAT
r
f
SU;STO
C-BUS CHARACTERISTICS
SYMBOL
b
10 and 1 page intelligent teletext decoders
SCL signal) in order to bridge the undefined region of the falling edge of SCL.
must then be met. This will automatically be the case if the device does not stretch t
stretch t
to the standard-mode I
b
= total capacitance of one bus line in pF.
LOW(SCL)
SCL clock frequency
bus free time between a STOP and START condition
hold time START condition; after this period, the first clock
pulse is generated
SCL LOW time
SCL HIGH time
set-up time repeated START
data hold time; notes 1 and 2
data set-up time; note 3
rise time SDA and SCL; note 4
fall time SDA and SCL; note 4
set-up time STOP condition
capacitive load of each bus line
2
C-bus device can be used in a standard-mode I
HD;DAT
, it must output the next data bit to the SDA line t
has only to be met if the device does not stretch the LOW period of the SCL signal (t
2
C-bus specification) before the SCL line is released.
PARAMETER
14
2
C-bus system, but the requirement t
r(max)
+ t
SU;DAT
0
1.3
0.6
1.3
0.6
0.6
0
100
20
20
0.6
FAST-MODE I
MIN.
= 1000 + 250 = 1250 ns (according
SAA5264; SAA5265
LOW(SCL)
400
0.9
300
300
400
2
Preliminary specification
MAX.
C-bus
. If such a device does
SU;DAT
IHmin
kHz
ns
ns
ns
pF
s
s
s
s
s
s
s
UNIT
LOW(SCL)
of the
250 ns
).