CY8C20121 CYPRESS [Cypress Semiconductor], CY8C20121 Datasheet - Page 30

• Manufacturer Part Number: CY8C20121
• Description: CapSense Express-One Button and Two Button Capacitive Controllers
• Manufacturer: CYPRESS [Cypress Semiconductor]

11.5 AC Electrical Specifications
11.5.1 5V and 3.3V AC General Purpose I/O Specifications
11.5.2 2.7V AC General Purpose I/O Specifications
11.5.3 AC I
Document Number: 001-53516 Rev. **
TRise
TFall
TRise
TFall
F
T
T
T
T
T
T
T
T
T
Parameter
Parameter
Parameter
SCL
SDA
SCL
HDSTA
LOW
HIGH
SUSTA
HDDAT
SUDAT
SUSTO
BUF
SP
I
2
I
I
C
2
I
2
t
I
2
f
C
2
C
C
I
I
I
I
C
I
2
2
2
2
2
C Setup time for a repeated START condition
C Hold time (repeated) START condition. After
C Data hold time
C Data setup time
C Setup time for STOP condition
S
2
C Specifications
SCL clock frequency
this period, the first clock pulse is generated
LOW period of the SCL clock
HIGH period of the SCL clock
BUS free time between a STOP and START
condition
Pulse width of spikes suppressed by the
input filter
Rise time, strong mode,
Cload = 50 pF
Fall time, strong mode,
Cload = 50 pF
Rise time, strong mode,
Cload = 50 pF
Fall time, strong mode,
Cload = 50 pF
t
t
HDSTAI2C
LOWI2C
Description
Description
Description
Figure 12. Definition of Timing for Fast/Standard Mode on the I
t
r
t
HDDATI2C
t
SUDATI2C
t
HIGHI2C
PRELIMINARY
t
f
Min
250
t
Standard
4.0
4.7
4.0
4.7
4.0
4.7
SUSTAI2C
0
0
–
Min
Min
Mode
15
10
15
10
Max
100
–
–
–
–
–
–
–
–
–
Sr
Min
100
Max
Fast Mode
0.6
1.3
0.6
0.6
0.6
1.3
Max
100
70
0
0
0
80
50
Max
t
400
HDSTAI2C
50
–
–
–
–
–
–
–
–
Unit
Unit
ns
ns
ns
ns
Units
kbps
µs
µs
µs
µs
µs
ns
µs
µs
ns
CY8C20111, CY8C20121
V
V
V
5.25V, 10% - 90%
V
5.25V, 10% - 90%
DD
DD
Fast mode not supported for
DD
DD
V
2
t
C Bus
SPI2C
DD
t
SUSTOI2C
= 2.4V to 2.90V, 10% - 90%
= 2.4V to 2.90V, 10% - 90%
= 3.10V to 3.6V and 4.75V to
= 3.10V to 3.6V and 4.75V to
< 3.0V
t
r
Notes
Notes
Notes
P
t
BUFI2C
Page 30 of 34
S
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