MK20DX32CLQ15 Просмотр технического описания (PDF) - Freescale Semiconductor

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MK20DX32CLQ15

K20 Sub-Family

Freescale Semiconductor 

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 – VDDA VDD-to-VDDA differential voltage

VSS – 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

–0.1

0.1

V

–0.1

0.1

V

1.71

3.6

V

0.7 × VDD

—

V

0.75 × VDD

—

V

Notes

VIL

Input low voltage

• 2.7 V ≤ VDD ≤ 3.6 V

• 1.7 V ≤ VDD ≤ 2.7 V

—

0.35 × VDD

V

—

0.3 × VDD

V

VHYS

Input hysteresis

0.06 × VDD

—

V

IICDIO Digital pin negative DC injection current — single pin

1

• VIN < VSS-0.3V

-5

—

mA

IICAIO

Analog2, EXTAL, and XTAL pin DC injection current

— single pin

3

mA

• VIN < VSS-0.3V (Negative current injection)

-5

—

• VIN > VDD+0.3V (Positive current injection)

—

+5

IICcont

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

—

mA

• Positive current injection

—

+25

VRAM

VDD voltage required to retain RAM

1.2

—

V

VRFVBAT VBAT voltage required to retain the VBAT register file VPOR_VBAT

—

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.

K20 Sub-Family Data Sheet Data Sheet, Rev. 6, 9/2011.

12

Freescale Semiconductor, Inc.

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