XC2238M Datasheet, PDF (88/102 Pages) Infineon Technologies AG – 16/32-Bit Single-Chip Microcontroller with 32-Bit Performance XC2000 Family Derivatives / Base Line

XC2238M, XC2239M
XC2000 Family Derivatives / Base Line
Electrical Parameters
4.6.4 Pad Properties
The output pad drivers of the XC223xM can operate in several user-selectable modes.
Strong driver mode allows controlling external components requiring higher currents
such as power bridges or LEDs. Reducing the driving power of an output pad reduces
electromagnetic emissions (EME). In strong driver mode, selecting a slower edge
reduces EME.
The dynamic behavior, i.e. the rise time and fall time, depends on the applied external
capacitance that must be charged and discharged. Timing values are given for a
capacitance of 20 pF, unless otherwise noted.
In general, the performance of a pad driver depends on the available supply voltage
V_DDP. Therefore, Table 27 and Table 28 list the pad parameters for the upper voltage
range and the lower voltage range, respectively.
Note: These parameters are not subject to production test but verified by design and/or
characterization.
Table 27 Standard Pad Parameters (Upper Voltage Range)
Parameter
Symbol
Limit Values
Min. Typ. Max.
Unit Note / Test
Condition
Maximum output current I_OLmax, –
–
10
mA Strong Driver
-I_{OHmax –}
–
4.0
mA Medium Driver
–
–
0.5
mA Weak Driver
Nominal output current I_OLnom, –
–
2.5
mA Strong Driver
-I_{OHnom –}
–
1.0
mA Medium Driver
–
–
0.1
mA Weak Driver
Rise/Fall time (10%-90%) t_R/t_F
–
–
4.2 + ns Strong Driver,
Valid for external
0.14*C_L
Fast Edge
capacitances in the range
–
–
11.6 + ns Strong Driver,
of 20 pF ≤ C_L ≤ 100 pF
(C_L in [pF])
0.22*C_L
Medium Edge
–
–
20.6 + ns Strong Driver,
0.22*C_L
Slow Edge
–
–
23 + ns Medium Driver
0.6*C_L
–
–
212 + ns Weak Driver
1.9*C_L
Data Sheet
88
V2.0, 2009-03