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K20P48M50SF0 Datasheet, PDF (11/60 Pages) Freescale Semiconductor, Inc – K20 Sub-Family | |||
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General
5.2 Nonswitching electrical specifications
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
IICIO
I/O pin DC injection current â single pin
⢠VIN < VSS-0.3V (Negative current injection)
⢠VIN > VDD+0.3V (Positive current injection)
1
mA
-3
â
â
+3
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 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.
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
Freescale Semiconductor, Inc.
11
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