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Category: Embedded System Product News

New Microchip PIC18F K22 Family has only 20nA Sleep

By Bill Giovino
Jun 1, 2010 - 5:09:29 PM

12-bit ADC, 20nA sleepy sleepy night night, lowest run current yet, capacitive touch sensing. Can't touch this?
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June 1, 2010 - Microchip today announced the new Microchip PIC18F K22 family of 8-bit Flash microcontrollers. These new microcontrollers feature significant improvements to Microchip's nanoWatt XLP low power technology. Other significant features include capacitive touch sensing for touch screens, wide operational voltage, and a 12-bit ADC.

Microchip PIC18F K22 Block Diagram
Microchip PIC18F K22 Block Diagram
Features of the new Microchip PIC18F K22 family include:

  • PIC18 core executes one instruction every 4 clock cycles
  • 1.8V to 5.5V Operating Voltage
  • New Low Power Specifications:
    Sleep: down to 20nA
    Watchdog: down to 330nA
    RTCC: down to 700nA
    Low Power BOR: Down to 45nA
  • Up to 128KBytes Flash
  • Up to 4KBytes RAM
  • Up to 1024Bytes on-chip Data EEPROM
  • 10 Input Capture/Output Compare PWM Channels
  • Up to 24 channels of 12-bit ADC ±2 LSB
  • Capacitive touch-sensing peripheral, Charge Time Measurement Unit (CTMU)
  • 2 SPI
  • 2 I2C
  • 2 EUSART
  • 3 Comparators

The 5V capability of this family is ideal for applications that require robust operation or noise immunity.  Battery-powered applications benefit from nanoWatt XLP technology, which reduces current draw and therefore extends battery life.  Target applications for the Microchip PIC18F K22 family include Industrial Control such as metering, electronic door locks, cargo tracking, lighting, alarm systems; Appliances such as smart energy, dishwashers, refrigerators, and HVAC controls; Medical Applications such as diagnostic devices, portable medical meters; and Automotive such as lighting, dashboard instrument clusters, keyless entry, interior controls, and garage-door openers.

"Our early-adopter customers are excited about the expansion of our PIC18F ‘K22' 8-bit MCU product line because of the scalability and low-cost migration path," said Steve Drehobl, vice president of Microchip's Security, Microcontroller and Technology Development Division.  "Having a single family that addresses a wide range of requirements is a huge advantage to customers.  It simplifies development, reduces design cycles and allows for easy migration in next-generation products."

Part Number


Program Memory







CTMU for
Cap. Touch




PIC18F1XK22 20 8 - 16 KB 256B 256 - 512B 18 10-bit x 12 ch. 2 0/1 N 1 1 1/3
PIC18F2XK22 28 8 - 64 KB 256 - 1024B 0.5 - 4 KB 25 10-bit x 17 ch. 2 Up to 2/3 Y 2 2 Up to 3/4
PIC18F4XK22 40/44 8 - 64 KB 256 - 1024B 0.5 - 4 KB 36 10-bit x 28 ch. 2 Up to 2/3 Y 2 2 Up to 3/4
PIC18F6XK22 64 32 - 128 KB 1024B 2 - 4 KB 53 12-bit x 16 ch. 3 Up to 7/3 Y 2 2 Up to 6/5
PIC18F8XK22 80 32 - 128 KB 1024B 2 - 4 KB 69 12-bit x 24 ch. 3 Up to 7/3 Y 2 2 Up to 6/5


Microchip Charge Time Measurement Unit (CTMU)
Microchip Charge Time Measurement Unit (CTMU)
The Capacitive touch sensing unit is used in touchscreen or touchpad applications. The Charge Time Measurement Unit (CTMU) uses one of the PIC18F ADC converters and sensing a change in capacitance that can be caused by a finger touching a touchpad.

In addition, these PIC18F microcontrollers feature a 50% improvement in run current over previous XLT microcontrollers.

Development Tool Support
Plug-In Modules (PIMs) for the PIC18LF45K22 and PIC18F87K22 are currently available.  These PIMs can be used with the Microchip PIC18 Explorer Board .  Engineers can also use Microchip‘s complete suite of standard development tools, including the free MPLAB IDE and corresponding emulators, programmers and development boards, along with the MPLAB C18 or HI-TECH C® compilers for PIC18 MCUs.

Packaging, Pricing & Availability
The PIC18FXXK22 microcontrollers are available in PDIP, QFN, SOIC, SSOP and TQFP packages of various sizes, in pin counts ranging from 20 to 80.  Prices start at 0.60 each in high volume.  Samples and volume-production quantities are available, today.

About Microchip Technology
"Microchip Technology Inc. (NASDAQ:  MCHP) is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide.  Headquartered in Chandler, Ariz., Microchip offers outstanding technical support along with dependable delivery and quality"

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New Microchip PIC18F K22 Family has only 20nA Sleep

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Product data and specifications in this article are the responsibility of the manufacturer. No warrenty is expressed or implied as to the accuracy of manufacturer-supplied data. So there.
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