K20P120M100SF2 Datasheet, PDF (12/66 Pages) Freescale Semiconductor, Inc – K20 Data Sheet

General
5.2 Nonswitching electrical specifications
5.2.1 Voltage and current operating requirements
Table 1. Voltage and current operating requirements
Symbol Description
V_DD
Supply voltage
V_DDA Analog supply voltage
V_DD – V_DDA V_DD-to-V_DDA differential voltage
V_SS – V_SSA V_SS-to-V_SSA differential voltage
V_BAT RTC battery supply voltage
V_IH
Input high voltage
• 2.7 V ≤ V_DD ≤ 3.6 V
• 1.7 V ≤ V_DD ≤ 2.7 V
Min.
1.71
1.71
–0.1
–0.1
1.71
0.7 × V_DD
0.75 × V_DD
V_IL
Input low voltage
• 2.7 V ≤ V_DD ≤ 3.6 V
—
• 1.7 V ≤ V_DD ≤ 2.7 V
—
V_HYS
I_ICDIO
Input hysteresis
Digital pin negative DC injection current — single pin
• V_IN < V_SS-0.3V
0.06 × V_DD
-5
I_ICAIO
Analog², EXTAL, and XTAL pin DC injection current —
single pin
• V_IN < V_SS-0.3V (Negative current injection)
-5
• V_IN > V_DD+0.3V (Positive current injection)
—
I_ICcont
Contiguous pin DC injection current —regional limit,
includes sum of negative injection currents or sum of
positive injection currents of 16 contiguous pins
• Negative current injection
-25
• Positive current injection
—
Max.
3.6
3.6
0.1
0.1
3.6
—
—
0.35 × V_DD
0.3 × V_DD
—
—
—
+5
—
+25
Unit
V
V
V
V
V
V
V
V
V
V
mA
mA
mA
V_RAM V_DD voltage required to retain RAM
1.2
—
V
V_RFVBAT V_BAT voltage required to retain the VBAT register file
V_{POR_VBAT}
—
V
Notes
1
3
1. All 5 V tolerant digital I/O pins are internally clamped to V_SS through a ESD protection diode. There is no diode connection
to V_DD. If V_IN greater than V_{DIO_MIN} (=V_SS-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=(V_{DIO_MIN}-V_IN)/|I_IC|.
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 V_SS and V_DD through ESD protection diodes. If V_IN is greater than V_{AIO_MIN}
(=V_SS-0.3V) and V_IN is less than V_{AIO_MAX}(=V_DD+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=(V_{AIO_MIN}-V_IN)/|I_IC|. The positive injection current limiting resistor is
calcualted as R=(V_IN-V_{AIO_MAX})/|I_IC|. Select the larger of these two calculated resistances.
K20 Data Sheet Data Sheet, Rev. 6.1, 08/2012.
12
Freescale Semiconductor, Inc.