K21_120: Kinetis K21-120 MHZ, Full-Speed USB, Anti-Tamper Microcontrollers based on ARM® Cortex®-M4

The Kinetis K21 120 MHz MCU family targets cost-sensitive applications requiring low-power functionality.

Kinetis^® K21 MCU Family Block Diagram

Name/Description	Type	Modified Date
Selector Guide: High-performance Kinetis® K Series MCUs (REV 1) PDF (2.4 MB) KINETISKMCUSELGD	Selector Guides	02 Oct 2015
Kinetis® K2x MCU Family - Fact Sheet (REV 10) PDF (373.5 kB) KINK2XFS	Fact Sheets	07 Jul 2016
Demonstration software for Kinetis® peripheral modules (REV 3) PDF (2.0 MB) KQRUG	Quick Reference Guides	30 May 2014

Data Sheets (5)

Name/Description	Modified Date
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (121pin) (REV 4) PDF (1.2 MB) K21P121M120SF5	18 Feb 2015
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (144pin) (REV 4) PDF (1.3 MB) K21P144M120SF5	18 Feb 2015
Kinetis® K22: 120MHz Cortex-M4F 640KB/1MB Flash (121pin) (REV 4) PDF (1.2 MB) K22P121M120SF5	18 Feb 2015
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (121pin) (REV 4) PDF (1.2 MB) K21P121M120SF5V2	15 Nov 2014
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (144pin) (REV 4) PDF (1.2 MB) K21P144M120SF5V2	15 Nov 2014

Errata (3)

Name/Description	Modified Date
Errata Mask 2N03G for Kinetis® MCUs (REV 08 DEC 2014) PDF (393.0 kB) KINETIS_2N03G	22 Feb 2015
KINETIS_3N03G, Mask Set Errata for Mask 3N03G - Errata (REV 08 DEC 2014) PDF (300.3 kB) KINETIS_3N03G	22 Feb 2015
Errata Mask 1N41K for Kinetis® MCUs (REV 21 OCT 2014) PDF (263.7 kB) KINETIS_1N41K	27 Nov 2014

Application Notes (49)

Name/Description	Modified Date
FFT-Based Algorithm for Metering Applications - Application Note (REV 4) PDF (347.5 kB) AN4255	26 Jul 2015
Power Management for Kinetis® and ColdFire®+ MCUs (REV 2) PDF (1.6 MB) AN4503	06 Apr 2015
Using Kinetis® FlexMemory as enhanced EEPROM (REV 2) PDF (863.9 kB) AN4282	04 Mar 2015
Power supply options for Tower® development plaftorm (REV 0.1) PDF (2.6 MB) AN4649	23 Sep 2014
Optimizing performance on Kinetis® K-series MCUs (REV 1) PDF (280.1 kB) AN4745	11 Jun 2014
Production Flash programming best practices for Kinetis® K and L MCUs (REV 1) PDF (173.6 kB) AN4835	02 May 2014
Cookbook for SAR ADC measurements (REV 1) PDF (843.1 kB) AN4373	17 Apr 2014
Audio player on KwikStik (REV 0) PDF (407.6 kB) AN4523	21 Jan 2014
Tips using PDB in motor control applications on Kinetis® (REV 0) PDF (447.9 kB) AN4822	18 Dec 2013
I2C non-blocking communication (REV 0) PDF (570.5 kB) AN4803	21 Oct 2013
Developer’s Serial Bootloader (REV 13) PDF (1.4 MB) AN2295	08 Oct 2013
Deep-dive: Water Tolerance Feature in Touch-Sensing Software Library (REV 0) PDF (333.9 kB) AN4781	10 Sep 2013
An I2S application on Kinetis® (REV 0) PDF (239.2 kB) AN4800	01 Sep 2013
Using DSPI as Slave on MQX RTOS (v3.8) (REV 0) PDF (215.1 kB) AN4791	29 Aug 2013
Integrating a Processor Expert® driver (LDD) into a non-PEx project (REV 0) PDF (2.1 MB) AN4769	14 Aug 2013
Connecting Kinetis® MCU with CMOS sensor interface through GPIO (REV 0) PDF (411.7 kB) AN4627	30 May 2013
PMSM electrical parameters measurement (REV 0) PDF (2.3 MB) AN4680	23 Apr 2013
Implementing in-software flash programming on Kinetis® MCUs (REV 0) PDF (218.5 kB) AN4695	17 Apr 2013
Using NXP® USB stack to implement Audio class device (REV 0) PDF (309.9 kB) AN4665	23 Mar 2013
I2C driver based on interrupt and blocking mechanism for MQX (REV 0) PDF (481.2 kB) AN4652	20 Mar 2013
USB Mass Storage Device (MSD) Host Bootloader (REV 1) PDF (2.6 MB) AN4368	06 Dec 2012
MQX Board Support Package (BSP) - Porting Guide on KEIL (REV 0) PDF (1.6 MB) AN4626	31 Oct 2012
Secure Bootloader implementation (REV 0) PDF (253.2 kB) AN4605	14 Oct 2012
BLDC Sensorless Algorithm Tuning (REV 0) PDF (1.4 MB) AN4597	11 Oct 2012
USB device firmware update (DFU) for Kinetis® MCUs (REV 1) PDF (2.5 MB) AN4370	07 Oct 2012
Using Kinetis® DMA and GPIO to emulate timer functionality (REV 0) PDF (825.4 kB) AN4419	27 Sep 2012
Using DMA to emulate ADC flexible scan mode on Kinetis® K (REV 0) PDF (204.0 kB) AN4590	19 Sep 2012
NXP® Embedded Software and Motor Control libraries (REV 0) PDF (216.9 kB) AN4611	14 Sep 2012
Understanding the 16-bit ADC PGA in Kinetis® K Series (REV 0) PDF (421.8 kB) AN4568	09 Sep 2012
PWM synchronization using Kinetis® Flextimers (REV 0) PDF (1.2 MB) AN4560	02 Aug 2012
Using Kinetis® Security and Flash Protection Features (REV 1) PDF (188.2 kB) AN4507	17 Jun 2012
Motor Control under MQX RTOS (REV 0) PDF (1.2 MB) AN4254	11 May 2012
Using FlexBus Interface for Kinetis® Microcontrollers (REV 0) PDF (723.5 kB) AN4393	10 May 2012
I2S (Inter-IC Sound Bus) application on Kinetis® MCUs (REV 0) PDF (382.7 kB) AN4520	08 May 2012
Pulse Oximeter using USB PHDC (REV 0) PDF (2.2 MB) AN4496	22 Mar 2012
Using CMSIS-DSP Algorithms with MQX and Kinetis® MCUs (REV 0) PDF (618.3 kB) AN4489	20 Mar 2012
Audio Output for Kinetis® MCUs using DMA/PWM, DAC or I2S (REV 0) PDF (458.4 kB) AN4369	13 Feb 2012
Low-Power management with MQX RTOS on Kinetis® MCUs (REV 0) PDF (251.8 kB) AN4447	30 Jan 2012
Display eGUI using TWR-LCD board (REV 0) PDF (1.6 MB) AN4452	17 Jan 2012
Configuring the FlexTimer for position and speed measurement (REV 0) PDF (382.6 kB) AN4381	05 Dec 2011
Kinetis® KwikStik-based EzPort programmer (REV 0) PDF (2.5 MB) AN4406	01 Dec 2011
FlexTimer and ADC synchronization for Field-Oriented-Control (REV 0) PDF (751.2 kB) AN4410	22 Nov 2011
Prototyping with Tower® System MCU development board (REV 0) PDF (320.9 kB) AN4390	11 Nov 2011
BLDC motor control w/ Hall Effect sensor - Kinetis® MCUs (REV 0) PDF (710.5 kB) AN4376	31 Oct 2011
Using WinUSB with MCU integrating USB device controller (REV 0) PDF (906.8 kB) AN4378	20 Oct 2011
USB Mass Storage Device (MSD) Bootloader (REV 0) PDF (434.3 kB) AN4379	17 Oct 2011
Implement protocol converters w/ MQX communication driver (REV 0) PDF (217.1 kB) AN4345	26 Aug 2011
Using I2C on Coldfire+ and Kinetis® MCUs (REV 0) PDF (2.0 MB) AN4342	10 Aug 2011
Using the CAU/mmCAU in ColdFire® and Kinetis® families (REV 0) PDF (171.3 kB) AN4307	18 May 2011

Reference Manuals (4)

Name/Description	Modified Date
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (121pin) (REV 4) PDF (11.7 MB) K21P121M120SF5RM	19 Feb 2015
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (144pin) (REV 4) PDF (11.7 MB) K21P144M120SF5RM	19 Feb 2015
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (121pin) (REV 3) PDF (12.7 MB) K21P121M120SF5V2RM	15 Nov 2014
Kinetis® K21: 120MHz Cortex-M4F up to 1MB Flash (144pin) (REV 3) PDF (12.7 MB) K21P144M120SF5V2RM	15 Nov 2014

Product Briefs (1)

Name/Description	Modified Date
Kinetis® K2x: Cortex-M4(F) MCUs with cost-optimized USB (REV 11) PDF (1.5 MB) K20PB	01 Aug 2012

Fact Sheets (1)

Name/Description	Modified Date
Kinetis® K2x MCU Family - Fact Sheet (REV 10) PDF (373.5 kB) KINK2XFS	07 Jul 2016

Selector Guides (1)

Name/Description	Modified Date
Selector Guide: High-performance Kinetis® K Series MCUs (REV 1) PDF (2.4 MB) KINETISKMCUSELGD	02 Oct 2015

Quick Reference Guides (1)

Name/Description	Modified Date
Demonstration software for Kinetis® peripheral modules (REV 3) PDF (2.0 MB) KQRUG	30 May 2014

Product Change Notices (1)

Name/Description	Modified Date
KINETIS K-SERIES 120MHZ K21F/K22F (2N03G and 3N03G mask sets) REFERENCE MANUAL UPDATE (REV 0) HTM (5.8 kB) PCN16256	13 Jun 2014

Calculators

TFS FlexMem Endurance Calculator (REV vBeta025) ZIP TFS_FLEXMEM_CALCULATOR 8/1/2014

Updates and Patches

PExDrv v10.2 Kinetis® K2xF 120MHz Service Pack (Win) (REV 1.0.1) ZIP PExDrv v10.2 Kinetis^® K2xF 120MHz Service Pack (Win) 2/11/2014
PExDrv v10.2 Update 1.0.2 (REV 1.0.2) ZIP PExDrv v10.2 Update 1.0.2 10/11/2013

Ordering Information

Product	Status	Budgetary Price excluding tax(US$)	HW dev. tools	Core Type	Floating Point Unit	Operating Frequency (Max) (MHz)	On-chip SRAM (KB)	Total Flash (KByte)	EEPROM (KB)	External memory & connectivity interfaces	UART	SPI	I2C	USB	USB features	CAN	GPIOs	ADC	DAC	16-bit PWM (ch)	16-bit Timer (ch)	32-bit Timer (ch)	Other analog blocks	Security	VDD (min)	VDD (max) (V)	Package type	Pin count	Package dimension (WxLxH) (mm3)	Pin pitch (mm)	Ambient Operating Temperature (Min-Max) (°C)
MK21FX512AVMC12	Active	10K @ US$4.48	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	132	640	4	External bus interface, SDHC Controller	5	3	3	1 (FS)	Device Charge Detect	1	81	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	121	8x8x1.5	0.65	-40 to 105
MK21FX512AVMD12	Active	10K @ US$4.68	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	132	640	4	External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	95	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	144	13x13x1.7	1	-40 to 105
MK21FN1M0AVLQ12	Active	10K @ US$5.20	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	128	1024		External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	100	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	LQFP	144	20x20x1.6	0.5	-40 to 105
MK21FN1M0AVMC12R	Active	10K @ US$5.04																										121
MK21FN1M0AVMD12	Active	10K @ US$5.25	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	128	1024		External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	95	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	144	13x13x1.7	1	-40 to 105
MK21FX512AVLQ12	Active	10K @ US$4.62	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	132	640	4	External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	100	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	LQFP	144	20x20x1.6	0.5	-40 to 105
MK21FN1M0AVMC12	Active	10K @ US$5.04	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	128	1024		External bus interface, SDHC Controller	5	3	3	1 (FS)	Device Charge Detect	1	81	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	121	8x8x1.5	0.65	-40 to 105
MK21FX512VMC12	Not Recommended for New Design	10K @ US$4.48	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	132	640	4	External bus interface, SDHC Controller	5	3	3	1 (FS)	Device Charge Detect	1	81	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	121	8x8x1.5	0.65	-40 to 105
MK21FN1M0VMD12	Not Recommended for New Design	10K @ US$5.25	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	128	1024		External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	104	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	144	13x13x1.7	1	-40 to 105
MK21FX512VMD12	Not Recommended for New Design	10K @ US$4.68	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	132	640	4	External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	104	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	144	13x13x1.7	1	-40 to 105
MK21FN1M0VLQ12	Not Recommended for New Design	10K @ US$5.20	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	128	1024		External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	104	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	LQFP	144	20x20x1.6	0.5	-40 to 105
MK21FX512VLQ12	Not Recommended for New Design	10K @ US$4.62	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	132	640	4	External bus interface, SDHC Controller	6	3	3	1 (FS)	Device Charge Detect	1	104	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	LQFP	144	20x20x1.6	0.5	-40 to 105
MK21FN1M0VMC12	Not Recommended for New Design	10K @ US$5.04	TWR-K21F120M	ARM Cortex-M4	Single Precision	120	128	1024		External bus interface, SDHC Controller	5	3	3	1 (FS)	Device Charge Detect	1	81	16-bit (SAR) x 2	12-bit x 2	12	13	4	Comparator, VREF	CRC, Cryptography Accelerator, RNG, Tamper Detection	1.71	3.6	MAPBGA	121	8x8x1.5	0.65	-40 to 105

Package Information

Package Description	Outline Version	Packing	Product Status	Part Number	Chemical Content	MSL	PPT (°C)
MAPBGA 121 881.5 P0.65	98ASA00344D	MPQ - 348 TRAYPOQ - 1740 BOX	Active	MK21FX512AVMC12	MK21FX512AVMC12.pdf	3	260
		MPQ - 348 TRAYPOQ - 1740 BOX	Active	MK21FN1M0AVMC12	MK21FN1M0AVMC12.pdf	3	260
		MPQ - 2000 REELPOQ - 2000 BOX	Active	MK21FN1M0AVMC12R	MK21FN1M0AVMC12R.pdf	3	260
		MPQ - 348 TRAYPOQ - 3480 BOX	Not Recommended for New Design	MK21FN1M0VMC12	MK21FN1M0VMC12.pdf	3	260
		MPQ - 348 TRAYPOQ - 3480 BOX	Not Recommended for New Design	MK21FX512VMC12	MK21FX512VMC12.pdf	3	260
LQFP 144 20SQ1.4P0.5 C90	98ASS23177W	MPQ - 60 TRAYPOQ - 600 BOX	Active	MK21FX512AVLQ12	MK21FX512AVLQ12.pdf	3	260
		MPQ - 60 TRAYPOQ - 600 BOX	Active	MK21FN1M0AVLQ12	MK21FN1M0AVLQ12.pdf	3	260
		MPQ - 60 TRAYPOQ - 600 BOX	Not Recommended for New Design	MK21FN1M0VLQ12	MK21FN1M0VLQ12.pdf	3	260
		MPQ - 60 TRAYPOQ - 600 BOX	Not Recommended for New Design	MK21FX512VLQ12	MK21FX512VLQ12.pdf	3	260
MAPBGA 144 13131.7 P1	98ASA00222D	MPQ - 160 TRAYPOQ - 1600 BOX	Active	MK21FX512AVMD12	MK21FX512AVMD12.pdf	3	260
		MPQ - 160 TRAYPOQ - 1600 BOX	Active	MK21FN1M0AVMD12	MK21FN1M0AVMD12.pdf	3	260
		MPQ - 160 TRAYPOQ - 800 BOX	Not Recommended for New Design	MK21FN1M0VMD12	MK21FN1M0VMD12.pdf	3	260
		MPQ - 160 TRAYPOQ - 1600 BOX	Not Recommended for New Design	MK21FX512VMD12	MK21FX512VMD12.pdf	3	260