cxp86460 Sony Electronics, cxp86460 Datasheet - Page 19

• Manufacturer Part Number: cxp86460
• Description: Cmos 8-bit Single Chip Microcomputer
• Manufacturer: Sony Electronics

(5) I
∗
Fig. 8. I
Fig. 9. I
• A pull-up resistor (Rp) must be connected to SDA0 (or SDA1) and SCL0 (or SCL1).
• The SDA0 (or SDA1) and SCL0 (or SCL1) series resistance (Rs = 300Ω or less) can be used to reduce the
1
SCL clock frequency
Bus-free time before starting transfer
Hold time for starting transfer
Clock Low level width
Clock High level width
Setup time for repeated transfers
Data hold time
Data setup time
SDA, SCL rise time
SDA, SCL fall time
Setup time for transfer completion
SDA
SCL
spike noise caused by CRT flashover.
The data hold time should be 300ns or more because the SCL rise time (300ns Max.) is not included in it.
2
C bus timing
2
2
C bus transfer timing
C bus device recommended circuit
P
t
BUF
Item
S
t
HD
;
STA
t
t
LOW
R
SDA0
(or SDA1)
SCL0
(or SCL1)
R
t
S
HD
I
device
2
;
C bus
f
t
t
t
t
t
t
t
t
t
t
DAT
SLC
BUF
HD; STA
LOW
HIGH
SU; STA
HD; DAT
SU; DAT
R
F
SU; STO
Symbol
R
S
t
HIGH
t
F
R
– 19 –
S
I
device
2
(Ta = –20 to +75°C, V
C bus
SCL
SDA, SCL
SDA, SCL
SCL
SCL
SDA, SCL
SDA, SCL
SDA, SCL
SDA, SCL
SDA, SCL
SDA, SCL
t
SU
CXP86212/86216, CXP86324/86332, CXP86440/86448/86460
;
R
Pins
DAT
S
R
P
Conditions
R
P
DD
St
= 4.5 to 5.5V, Vss = 0V reference)
t
SU
;
STA
t
HD
;
Min.
250
STA
0 ∗
4.7
4.0
4.7
4.0
4.7
4.7
0
1
t
SU
;
STO
Max.
100
300
1
P
Unit
kHz
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs