PXR40 Datasheet, PDF (64/100 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Electrical characteristics
5.7.1 I/O pad current specifications
The power consumption of an I/O segment is dependent 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 12 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 12.
The AC timing of these pads are described in the Section 5.11.2 Pad AC specifications.
Table 12. V_DDE/V_DDEH I/O Pad Average DC Current¹
Spec Pad Type
Symbol
Frequency
(MHz)
Load²
(pF)
Voltage
(V)
Drive/Slew
Rate Select
Current (mA)
1
Medium
I_{DRV_MH}
50
2
20
50
5.25
11
16.0
50
5.25
01
6.3
3
3.0
50
5.25
00
1.1
4
2.0
200
5.25
00
2.4
5
Fast
I_{DRV_FC}
66
10
3.6
00
6.5
6
66
20
3.6
01
9.4
7
66
30
3.6
10
10.8
8
66
50
3.6
11
33.3
9
Fast w/ Slew
I_{DRV_FSR}
66
50
3.6
11
12.0
10
Control
50
50
3.6
10
6.2
11
33.33
50
3.6
01
4.0
12
20
50
3.6
00
2.4
13
20
200
3.6
00
8.9
1 _{These are average IDDE numbers for worst case PVT from simulation. Currents apply to output pins only.}
2 _{All loads are lumped.}
5.7.2 I/O pad V_DD33 current specifications
The power consumption of the V_DD33 supply is dependent on the usage of the pins on all I/O segments. The power consumption
is the sum of all input and output pin V_DD33 currents for all I/O segments. The V_DD33 current draw on fast speed pads can be
calculated from Table 13 dependent on the voltage, frequency, and load on all F type pins. The V_DD33 current draw on medium
pads can be calculated from Table 13 dependent on voltage and independent on the frequency and load on all MH type pins.
Use linear scaling to calculate pin currents for voltage, frequency, and load parameters that fall outside the values given in
Table 13.
The AC timing of these pads are described in the Section 5.11.2 Pad AC specifications.
PXR40 Microcontroller Data Sheet, Rev. 1
64
Freescale Semiconductor