saa5290ps NXP Semiconductors, saa5290ps Datasheet - Page 61

• Manufacturer Part Number: saa5290ps
• Description: Economy Teletext And Tv Microcontrollers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
13 CHARACTERISTICS FOR THE I
Notes
1. This parameter is determined by the user software. It must comply with the I
2. This value gives the auto-clock pulse length which meets the I
3. The rise time is determined by the external bus line capacitance and pull-up resistor. It must be less than 1 s.
4. The maximum capacitance on bus lines SDA and SCL is 400 pF.
1998 Dec 14
SCL timing
t
t
t
t
t
SDA timing
t
t
t
t
t
t
t
HD;STA
LOW
HIGH
rC
fC
SU;DAT1
HD;DAT
SU;STA
SU;STO
BUF
rD
fD
Economy teletext and TV microcontrollers
SYMBOL
Alternatively, the SCL pulse must be timed by software.
START condition hold time
SCL LOW time
SCL HIGH time
SCL rise time
SCL fall time
data set-up time
data hold time
repeated START set-up time
STOP condition set-up time
bus free time
SDA rise time
SDA fall time
PARAMETER
2
C-BUS INTERFACE
4.0 s
4.7 s
4.0 s
1.0 s
0.3 s
250 ns
0 ns
4.7 s
4.0 s
4.7 s
1.0 s
0.3 s
INPUT
61
2
C-bus specification for the special crystal frequency.
note 1
note 1
note 3
note 1
note 1
note 1
note 1
note 1
note 3
4.0 s; note 2
0.3 s; note 4
0.3 s; note 4
OUTPUT
2
C-bus specification.
4.0 s
4.7 s
4.0 s
1.0 s
0.3 s
250 ns
0 ns
4.7 s
4.0 s
4.7 s
1.0 s
0.3 s
I
2
C-BUS SPECIFICATION
SAA5x9x family
Preliminary specification