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Low-Power, 8-bit Microcontrollers With 5V Operation, 20 nA Sleep

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A line of low-power, high-performance 8-bit microcontrollers provides features such as operation from 1.8 to 5.5V, numerous communication channels, 8 to 128 Kbyte flash memory and peripherals for capacitive touch-sensing applications. Other features included in the PIC18F “K22” family from Microchip Technology are a 12-bit Analog-to-Digital Converter (ADC), multiple PWMs and additional timers. All of the new MCUs feature nano-watt XLP technology for eXtreme low-power operation, with industry-leading sleep currents down to 20 nA.  Additionally, the MCUs provide a greater than 50% improvement in active current over previous generations.

The feature set of the PIC18F “K22” MCUs allows this family to be used in a wide variety of applications. The 5V capability of the family is ideal for applications that typically require robust operation or noise immunity. Battery-powered applications benefit from nano-watt XLP technology, which reduces current draw and therefore extends battery life. Example applications include those in the industrial (e.g. metering, electronic door locks, cargo tracking, lighting, alarm systems); appliance (e.g. smart energy, dishwashers, refrigerators, HVAC controls); medical (e.g. diagnostic devices, portable medical meters); and automotive (e.g. lighting, dashboard instrument clusters, keyless entry, interior controls, garage-door openers) markets, among others. A summary of the features is shown in Table 1.

Plug-In Modules (PIMs) for the PIC18LF45K22 and PIC18F87K22  MCUs are also available. The PIMs can be used with the PIC18 Explorer Board. Designers can also use Microchip’s complete suite of standard development tools, including the free MPLAB IDE and corresponding suite of emulators, programmers and development boards, along with the MPLAB C18 or HI-TECH C compilers for PIC18 MCUs. The PIC18FXXK22 MCUs 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.  

Microchip Technology, 

Chandler, AZ. 

(480) 792-7200. 

[www.microchip.com].