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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
[10]
Clock Input High
(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 Timin
g
t
RISE
t
FALLt
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
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