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Microchip beefs up 20-pin PIC MCU line

Posted: 12 Jul 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Marty Gold? Microchip? PIC16F631? PIC16F677? PIC microcontroller?

Microchip Technology Inc. has beefed-up its 20-pin PIC microcontroller (MCU) line with the launching of the PIC16F631 and the PIC16F677. The PIC16F631 provides a cost-effective entry point for migration from 8- and 14pin devices, while the PIC16F677 brings affordable hardware I2C and SPI capability to the small flash MCU market.

The new MCUs are an extension of the PIC16F685/687/689/690 series, and can be used as "drop-in" replacements for their more feature-rich counterparts. Board layout, control code, and tool suites can be completely re-used without modification, giving engineers the freedom to design platform-based systems without the associated cost penalty.

Both devices employ the following features: nanoWatt Technology for minimum power consumption in battery-powered applications; dual analog comparators with S/R latch mode to eliminate the need for discrete components; and In-Circuit Serial Programming technology for field programmability. These enhancements serve to simplify the design of increasingly complex embedded-control systems.

The new PIC16F631/677 MCUs serve a broad market, including the following example applications: battery powered devices (security systems, smoke and CO detectors, handheld devices), appliances (deep fryers, washers, dryers), and power conversion (power supplies, DC/DC converters, battery chargers).

Each of the new MCs offer up to 3.5Kbytes of program flash memory, up to 128 bytes of RAM memory, wide range of internally generated clock frequencies (31kHz to 8MHz), two comparators with set-reset latch mode, 0.6V internal bandgap reference and enhanced low-current Watchdog Timer. They are housed in a 4-by-4 QFN package options for space savings. The PIC16F677 provides a 12-channel, 10bit ADC and SPI and I2C support with Address Mask option.

The two new devices are supported by the full suite of Microchip's development tools, including the PICkit 2 Starter Kit, free MPLAB Integrated Development Environment (IDE), and the low-cost MPLAB In-Circuit Debugger 2.

The PIC16F631 and PIC16F677 devices are expected to be available in mid-July for general sampling and volume production in RoHS-compliant 20-pin PDIP, SOIC, SSOP and QFN packages. Prices start at 94 cents each in 10,000-unit quantities.

- Marty Gold

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