CY8C38_11 Datasheet, PDF (75/129 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC®)

PSoC^® 3: CY8C38 Family
Data Sheet
11.1.2 SIO
Table 11-11. SIO DC Specifications
Parameter
Description
Conditions
Min
Typ
Max
Units
Vinmax
Maximum input voltage
All allowed values of Vddio and
–
Vddd, see Section 11.2.1
–
5.5
V
Vinref
Input voltage reference
(Differential input mode)
0.5
– 0.52 × V_DDIO V
Output voltage reference (Regulated output mode)
Voutref
Input voltage high threshold
V_DDIO > 3.7
V_DDIO < 3.7
1
–
V_DDIO – 1
V
1
–
V_DDIO – 0.5 V
V_IH
GPIO mode
CMOS input
0.7 × V_DDIO
–
–
V
Differential input mode^[32]
Hysteresis disabled
SIO_ref + 0.2 –
–
V
Input voltage low threshold
V_IL
GPIO mode
CMOS input
Differential input mode^[32]
Hysteresis disabled
–
–
0.3 × V_DDIO V
–
– SIO_ref – 0.2 V
Output voltage high
Unregulated mode
V_OH
Regulated mode^[32]
Regulated mode^[32]
Output voltage low
I_OH = 4 mA, V_DDIO = 3.3 V
I_OH = 1 mA
I_OH = 0.1 mA
V_DDIO – 0.4
–
–
V
SIO_ref – 0.65 – SIO_ref + 0.2 V
SIO_ref – 0.3 – SIO_ref + 0.2 V
V_OL
Rpullup
Pull-up resistor
V_DDIO = 3.30 V, I_OL = 25 mA
V_DDIO = 1.80 V, I_OL = 4 mA
–
–
0.8
V
–
–
0.4
V
3.5
5.6
8.5
kΩ
Rpulldown
Pull-down resistor
3.5
5.6
8.5
kΩ
I_IL
Input leakage current (Absolute
value)^[33]
V_IH < Vddsio
25 °C, Vddsio = 3.0 V, V_IH = 3.0 V
–
–
14
nA
V_IH > Vddsio
C_IN
Input Capacitance^[33]
25 °C, Vddsio = 0 V, V_IH = 3.0 V
–
–
–
10
µA
–
7
pF
Input voltage hysteresis
Single ended mode (GPIO
–
40
–
mV
V_H
(Schmitt-Trigger)^[33]
mode)
Differential mode
–
35
–
mV
Idiode
Current through protection diode
to V_SSIO
–
–
100
µA
Notes
32. See Figure 6-9 on page 35 and Figure 6-12 on page 38 for more information on SIO reference.
33. Based on device characterization (Not production tested).
Document Number: 001-11729 Rev. *R
Page 75 of 129
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