Cypress EZ-OTG CY7C67200 Manuale Utente
CY7C67200
Document #: 38-08014 Rev. *G
Page 68 of 78
Clock Timing
I
2
C EEPROM Timing
Parameter
Description
Min.
Typ.
Max.
Unit
f
CLK
Clock Frequency
12.0
MHz
v
XINH
Clock Input High
(XTALOUT left floating)
(XTALOUT left floating)
1.5
3.0
3.6
V
t
CLK
Clock Period
83.17
83.33
83.5
ns
t
HIGH
Clock High Time
36
44
ns
t
LOW
Clock Low Time
36
44
ns
t
RISE
Clock Rise Time
5.0
ns
t
FALL
Clock Fall Time
5.0
ns
Duty Cycle
45
55
%
XTALIN
Clock Timing
t
RISE
t
FALL
t
HIGH
t
CLK
t
LOW
Parameter
Description
Min.
Typical
Max.
Unit
f
SCL
Clock Frequency
400
kHz
t
LOW
Clock Pulse Width Low
1300
ns
t
HIGH
Clock Pulse Width High
600
ns
t
AA
Clock Low to Data Out Valid
900
ns
t
BUF
Bus Idle Before New Transmission
1300
ns
t
HD.STA
Start Hold Time
600
ns
t
SU.STA
Start Setup Time
600
ns
t
HD.DAT
Data In Hold Time
0
ns
t
SU.DAT
Data In Setup Time
100
ns
t
R
Input Rise Time
300
ns
t
F
Input Fall Time
300
ns
t
SU.STO
Stop Setup Time
600
ns
t
DH
Data Out Hold Time
0
ns
Note
10.
v
XINH is required to be 3.0V to obtain an internal 50/50 duty cycle clock.
SCL
t
LOW
t
HIGH
t
R
t
HD.DAT
t
AA
t
DH
SDA IN
SDA OUT
1. I2C EEPROM Bus Timing - Serial I/O
t
SU.STA
t
HD.STA
t
F
t
SU.DAT
t
BUF
t
SU.STO