CXP85112 Sony Corporation, CXP85112 Datasheet - Page 16

• Manufacturer Part Number: CXP85112
• Description: CMOS 8-bit Single-chip Microcomputer
• Manufacturer: Sony Corporation

(6) I
• Pull-up resistors (R
• Serial resistance (Rs = 300Ω and under) of SDA0 (or SDA1) and SCL0 (or SCL1) reduces spike noise
1
SCL clock frequency
Bus free time prior to transfer start
Transfer start hold time
Clock Low level width
Clock High level width
Setup time during repetitive transfer
Data hold time
Data setup time
SDA, SCL rise time
SDA, SCL fall time
Transfer end setup time
caused by CRT flashover.
SDA
SCL
The data hold time does not take into consideration SCL rise time (300ns max.). Ensure that the data hold
time exceeds 300ns.
2
C bus timing
P
t
BUF
Item
S
P
t
HD; STA
) must be connected to SDA0 (or SDA1) and SCL0 (or SCL1).
Fig. 10. Recommended circuit example for I
SDA0
(or SDA1)
SCL0
(or SCL1)
t
t
LOW
R
R
S
I
2
C device
Fig. 9. I
t
HD; DAT
f
t
t
t
t
t
t
t
t
t
t
SLC
BUF
HD; STA
LOW
HIGH
SU; STA
HD; DAT
SU; DAT
R
F
SU; STO
R
Symbol
S
2
R
C bus transfer timing
I
S
2
t
C device
HIGH
t
F
– 16 –
(Ta = –20 to +75°C, V
R
SCL
SDA, SCL
SDA, SCL
SCL
SCL
SDA, SCL
SDA, SCL
SDA, SCL
SDA, SCL
SDA, SCL
SDA, SCL
t
S
SU; DAT
R
Pins
P
CXP85112B/85116B, CXP85220A/85224A/85228A/85232A
R
P
Conditions
2
C device
DD
St
= 4.5 to 5.5V, Vss = 0V reference)
t
SU; STA
t
HD; STA
Min.
250
4.7
4.0
4.7
4.0
4.7
0
4.7
0
1
t
SU; STO
Max.
100
300
1
P
Unit
kHz
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs