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K40P144M100SF2_1109 Datasheet, PDF (13/78 Pages) Freescale Semiconductor, Inc – K40 Sub-Family Data Sheet | |||
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General
5.2.1 Voltage and current operating requirements
Table 1. Voltage and current operating requirements
Symbol Description
VDD
Supply voltage
VDDA
Analog supply voltage
VDD â VDDA VDD-to-VDDA differential voltage
VSS â VSSA VSS-to-VSSA differential voltage
VBAT
RTC battery supply voltage
VIH
Input high voltage
⢠2.7 V ⤠VDD ⤠3.6 V
⢠1.7 V ⤠VDD ⤠2.7 V
Min.
Max.
Unit
1.71
3.6
V
1.71
3.6
V
â0.1
0.1
V
â0.1
0.1
V
1.71
3.6
V
0.7 Ã VDD
â
V
0.75 Ã VDD
â
V
Notes
VIL
Input low voltage
⢠2.7 V ⤠VDD ⤠3.6 V
⢠1.7 V ⤠VDD ⤠2.7 V
â
0.35 Ã VDD
V
â
0.3 Ã VDD
V
VHYS
Input hysteresis
0.06 Ã VDD
â
V
IICDIO Digital pin negative DC injection current â single pin
1
⢠VIN < VSS-0.3V
-5
â
mA
IICAIO
Analog2, EXTAL, and XTAL pin DC injection current
â single pin
3
mA
⢠VIN < VSS-0.3V (Negative current injection)
-5
â
⢠VIN > VDD+0.3V (Positive current injection)
â
+5
IICcont
Contiguous pin DC injection current âregional limit,
includes sum of negative injection currents or sum of
positive injection currents of 16 contiguous pins
⢠Negative current injection
-25
â
mA
⢠Positive current injection
â
+25
VRAM
VDD voltage required to retain RAM
1.2
â
V
VRFVBAT VBAT voltage required to retain the VBAT register file VPOR_VBAT
â
V
1. All 5 volt tolerant digital I/O pins are internally clamped to VSS through a ESD protection diode. There is no diode
connection to VDD. If VIN greater than VDIO_MIN (=VSS-0.3V) is observed, then there is no need to provide current limiting
resistors at the pads. If this limit cannot be observed then a current limiting resistor is required. The negative DC injection
current limiting resistor is calculated as R=(VDIO_MIN-VIN)/|IIC|.
2. Analog pins are defined as pins that do not have an associated general purpose I/O port function.
3. All analog pins are internally clamped to VSS and VDD through ESD protection diodes. If VIN is greater than VAIO_MIN
(=VSS-0.3V) and VIN is less than VAIO_MAX(=VDD+0.3V) is observed, then there is no need to provide current limiting
resistors at the pads. If these limits cannot be observed then a current limiting resistor is required. The negative DC
injection current limiting resistor is calculated as R=(VAIO_MIN-VIN)/|IIC|. The positive injection current limiting resistor is
calcualted as R=(VIN-VAIO_MAX)/|IIC|. Select the larger of these two calculated resistances.
K40 Sub-Family Data Sheet Data Sheet, Rev. 6, 9/2011.
Freescale Semiconductor, Inc.
13
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