CY8C38 Datasheet, PDF (68/100 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC)

PRELIMINARY
PSoC^®3: CY8C38 Family Data Sheet
Table 11-11. SIO AC Specifications (continued)
Parameter
Fsioout
Fsioin
Description
Conditions
SIO output operating frequency
3.3V < Vddio < 5.5V, Unregulated 90/10% Vddio into 25 pF
output (GPIO) mode, fast strong
drive mode
1.71V < Vddio < 3.3V, Unregulated 90/10% Vddio into 25 pF
output (GPIO) mode, fast strong
drive mode
3.3V < Vddio < 5.5V, Unregulated 90/10% Vddio into 25 pF
output (GPIO) mode, slow strong
drive mode
1.71V < Vddio < 3.3V, Unregulated 90/10% Vddio into 25 pF
output (GPIO) mode, slow strong
drive mode
3.3V < Vddio < 5.5V, Regulated Output continuously switching into
output mode, fast strong drive mode 25 pF
1.71V < Vddio < 3.3V, Regulated Output continuously switching into
output mode, fast strong drive mode 25 pF
1.71V < Vddio < 5.5V, Regulated Output continuously switching into
output mode, slow strong drive 25 pF
mode
SIO input operating frequency
1.71V < Vddio < 5.5V
90/10% Vddio
11.4.3 USBIO
Table 11-12. USBIO DC Specifications
Parameter
Rusbi
Rusba
Vohusb
Description
USB D+ pull up resistance
USB D+ pull up resistance
Static output high
Volusb
Static output low
Vohgpio
Volgpio
Vdi
Vcm
Vse
Rps2
Output voltage high, GPIO mode
Output voltage low, GPIO mode
Differential input sensitivity
Differential input common mode
range
Single ended receiver threshold
PS/2 pull up resistance
Rext
External USB series resistor
Conditions
With idle bus
While receiving traffic
15 kΩ ±5% to Vss, internal pull up
enabled
15 kΩ ±5% to Vss, internal pull up
enabled
Ioh = 4 mA, Vddio ≥ 3V
Iol = 4 mA, Vddio ≥ 3V
|(D+)-(D-)|
In PS/2 mode, with PS/2 pull up
enabled
In series with each USB pin
Zo
USB driver output impedance
Including Rext
Cin
USB transceiver input capacitance
Iil
Input leakage current (absolute
value)
25°C, Vddio = 3.0V
Min
-
-
-
-
-
-
-
-
Min
0.900
1.425
2.8
-
2.4
-
-
0.8
0.8
3
21.78
(-1%)
28
-
-
Typ
Max Units
-
33
MHz
-
16
MHz
-
5
MHz
-
4
MHz
-
20
MHz
-
10
MHz
-
2.5
MHz
-
66
MHz
Typ
Max Units
-
1.575
kΩ
-
3.090
kΩ
-
3.6
V
-
0.3
V
-
-
V
-
0.3
V
-
0.2
V
-
2.5
V
-
2
V
-
7
kΩ
22
22.22
Ω
(+1%)
-
44
Ω
-
20
pF
-
2
nA
Document Number: 001-11729 Rev. *I
Page 68 of 100
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