CMT2380F64
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Rev 0.3 | 22 / 83
1.17 I/O port characteristic
⚫
Generic input/output characteristics
All of the I/O ports are compatible with CMOS and TTL.
I/O static characteristics
Symbol
Parameter
VDD
Conditions
Min
Max
Unit
VIH
Low level input voltage
3.3
-
-
0.8
V
1.8
-
-
0.2×VDD
VIH
High level input voltage
3.3
-
2.0
-
1.8
-
0.8×VDD
-
Vhys
I/O Schmitt trigger voltage
Hysteresis (1)
3.3/1.8
-
0. 1×VDD
---
V
Ilkg (2)
Input leakage current IIH
3.3/1.8
-
---
1
μA
Input leakage current IIL
3.3/1.8
-
-1
-
VOH
Output high level voltage
3.3
High driving Imin=8 mA low
driving Imin=4 mA
2.4
-
V
1.8
High driving Imin=4 mA low
driving Imin=2 mA
VDD-0.45
-
VOL
Output low level voltage
3.3
High drivingImin=8 mA low
driving Imin=4 mA
-
0.45
1.8
High driving Imin=4 mA low
driving Imin=2 mA
-
0.4
RPU
Internal pull-up resistor
3.3/1.8
-
40
100
kΩ
RPD
Internal pull-down resistor
3.3/1.8
-
40
100
kΩ
CIO
I/O pin capacitance
3.3/1.8
-
-
10
pF
1. The hysteresis voltage of the Schmitt trigger switching level. Guaranteed by design and comprehensive evaluation, not tested
in production.
2. If there is reverse current in the adjacent pin, the leakage current may be higher than the maximum value.
All I/O ports are CMOS and TTL compatible (no software configuration required) and their features take most of
the strict CMOS process or TTL parameters into account.
⚫
Input and output AC characteristics
The parameters and definition of I/O AC are shown as followed.
I/O AC characteristics
VDD
Condition
Rise/Fall Time (ns)
Propagation Delay (ns)
Driving
Strength
Slew Rate
Control
C
Loading
(pf)
Min
Typ
Max
Min
Typ
Max
3.3V
(2.7~3.6)
Low (DR=1)
Slow (SR=1)
25
4
5.5
11
6.6
10
20
50
7.5
9.5
18
8.5
12
24
100
15
17
32
13
16
31
Fast (SR=0)
25
3.8
4.9
9.2
5.9
8.8
18
50
7.3
8.8
16.2
7.8
10.8
21.2
