PXN20 Datasheet, PDF (34/60 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Electrical characteristics
4.7 I/O pad current specifications
The power consumption of an I/O segment depends on the usage of the pins on a particular segment. The power consumption
is the sum of all output pin currents for a particular segment. The output pin current can be calculated from Table 11 based on
the voltage, frequency, and load on the pin. Use linear scaling to calculate pin currents for voltage, frequency, and load
parameters that fall outside the values given in Table 11.
Table 11. I/O pad average I_DDE specifications¹
Spec
Pad
Type²
Symbol
Period
(ns)
Load³
(pF)
V_DDE
(V)
Drive/Slew
Rate Select
I_DDE Avg
(mA)
I_DDE RMS
(mA)
1
37
50
5.5
11
14
2
130
50
5.5
01
5.3
Slow
I_{DRV_SSR_HV}
3
650
50
5.5
00
1.1
4
840
200
5.5
00
3
6
24
50
5.5
11
9
7
62
50
5.5
01
2.5
Medium I_{DRV_MSR_HV}
8
317
50
5.5
00
0.5
9
425
200
5.5
00
1.5
11
10
50
3.6
11
50.4
12
10
30
3.6
10
14.2
13
10
20
3.6
01
16.4
14
10
10
3.6
00
Fast
I_{DRV_FC}
15
10
50
2.75
11
9.8
22.9
16
10
30
2.75
10
6.7
17
10
20
2.75
01
4.5
18
10
10
2.75
00
3
19 Input
I_{DRV_I_HV}
7
0.5
5.5
N/A
N/A
1 _{These are typical values that are estimated from simulation and not tested. Currents apply to output pins only.}
2 _{Slow = SH or SHA; Medium = MH or MHA; Fast = F; Input = IHA. See Table 3.}
3 _{All loads are lumped.}
101.6
57.3
43.6
15.9
45.3
25.3
17.3
9.6
N/A
PXN20 Microcontroller Data Sheet, Rev. 1
34
Freescale Semiconductor