Santa Clara, Calif. -- NEC Electronics America's newest 8-bit microcontroller line called the 78K0S/Kx1+ family targets cost-sensitive applications; the higher-end 78K0/Kx1+ family offers larger memory sizes and more on-chip peripherals for more complex applications.
Some Kx1+ products also include an 8-MHz high-speed ring oscillator and on-chip debugging (OCD) circuit, which allows designers to do in-circuit debugging on the target board without having to use a traditional in-circuit emulator. The Kx1+ Series also offers low pin counts and single-voltage flash operation.
The 78K0/Kx1+ and the 78K0S/Kx1+ MCUs employ the same core architecture and instruction set, and like all members of the K1 family, were designed to facilitate migration from 8- to 32-bit designs, according to NEC.
The newest NEC MCU devices share many peripherals common to all members of the K1 family including fail-safe circuitry, on-chip clocks in addition to the main clock, a watchdog timer, device and system power-on reset (POR) circuits, and a low-voltage indicator (LVI). The 78K0/Kx1+ MCUs achieve operating speeds up to 16 MHz, resulting in a 60 percent increase in CPU processing speeds over the 10-MHz 78K0/Kx1 and the 78K0S/Kx1+ MCUs.
The 78K0S/Kx1+ family offers 8-, 16-, 20- and 30-pin devices, while the 78K0/Kx1+ family offers devices with pin counts of 30 to 80 pins. 78K0/Kx1+ MCUs with pin counts of 44 or more feature an OCD function that enables in-system software development and provides enhanced reliability for industrial, security and safety-critical applications.
"With many consumer, industrial and automotive applications needing to have simple mechanical functions migrated to an MCU-based platform, we are seeing strong demand for 8-bit MCUs," said Bart Ladd, general manager, microcontroller strategic business unit, NEC Electronics America.
The SST SuperFlash technology used in the Kx1+ Series offers remote re-programmability after product installation, providing flexibility for future software and product changes. The flash memory can also be used as nonvolatile data memory, allowing the flash memory to be used instead of an EEPROM and thus reducing the number of overall system components. In addition, the single power supply structure significantly reduces the size of flash area compared to the previous generation of products.
The K1 microcontrollers also offer common hardware design tools and emulators with the same user interface giving designers the capability to migrate from 8- to 32-bit designs according to their design needs. A common peripheral set and code portability between 8- and 32-bit designs, in addition to the extensive selection of flash options, help to reduce development time and costs related to software porting and achieve a faster time to market, according to NEC.
Devices in the 78K0/Kx1+ and 78K0S/Kx1+ series are available now. Prices vary depending on pin count and memory size and are similar to prices for mask ROM devices. The uPD78F0148HGC-8BT, an 80 pin device with 60 Kbytes of flash has a per piece price of $6.80 in lots of 10,000; the uPD78F9221MC-5A4, a 20-pin device with 2 Kbytes of flash is priced at $2.27 in the same quantity bracket.
For more information on the NEC MCU line, please visit www.necelam.com/k1