K21P80M50SF4V2 datasheet(7/61 Pages) NXP

Part #	K21P80M50SF4V2

Description	Kinetis K21D Sub-Family

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Manufacturer	NXP [NXP Semiconductors]

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2.2.1 Voltage and current operating requirements

Table 1. Voltage and current operating requirements

Symbol

Description

Min.

Max.

Unit

Notes

VDD

Supply voltage

1.71

3.6

V

VDDA

Analog supply voltage

1.71

3.6

V

VDD – VDDA VDD-to-VDDA differential voltage

–0.1

0.1

V

VSS – VSSA VSS-to-VSSA differential voltage

–0.1

0.1

V

VBAT

RTC battery supply voltage

1.71

3.6

V

VIH

Input high voltage

• 2.7 V ≤ VDD ≤ 3.6 V

• 1.71 V ≤ VDD ≤ 2.7 V

0.7 × VDD

0.75 × VDD

—

V

VIL

Input low voltage

• 2.7 V ≤ VDD ≤ 3.6 V

• 1.71 V ≤ VDD ≤ 2.7 V

—

0.35 × VDD

0.3 × VDD

V

VHYS

Input hysteresis

0.06 × VDD

—

V

IICIO

I/O pin DC injection current — single pin

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

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

-3

—

+3

mA

1

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

• Positive current injection

-25

—

+25

mA

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 analog pins are internally clamped to VSS and VDD through ESD protection diodes. If VIN is less than VAIO_MIN or

greater than VAIO_MAX, a current limiting resistor is required. The negative DC injection current limiting resistor is

calculated as R=(VAIO_MIN-VIN)/|IICAIO|. The positive injection current limiting resistor is calculated as R=(VIN-

VAIO_MAX)/|IICAIO|. Select the larger of these two calculated resistances if the pin is exposed to positive and negative

injection currents.

2.2.2 LVD and POR operating requirements

Table 2. VDD supply LVD and POR operating requirements

Symbol

Description

Min.

Typ.

Max.

Unit

Notes

VPOR

Falling VDD POR detect voltage

0.8

1.1

1.5

V

VLVDH

Falling low-voltage detect threshold — high

range (LVDV=01)

2.48

2.56

2.64

V

Table continues on the next page...

General

Kinetis K21D Sub-Family Data Sheet, Rev6, 04/2014.

7

Freescale Semiconductor, Inc.

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