MSM66579 family

Features:






Specifications






Description

      This is the general description MSM66579 family: The MSM66579 family of highly functional CMOS 16-bit single chip microcontrollers utilizes the nX-8/500S, Oki's proprietary CPU core. Four channels of serial ports, consisting of two channels of synchronous serial ports with 32-byte FIFO registers and two channels of UART/synchronous serial ports, enable easy interfacing with external peripheral LSI devices such as an encoder/decoder or servocontroller. A switching function permits selection of separate address and data lines or multiplexed lines for the bus interface to correspond to various peripheral LSI devices. With features such as a clock gear function, dual clock function, programmable pull-up ports in which individual bits can be programmed, and a small, thin package, the MSM66579 family of microprocessors is optimally suited for the system control of small-sized low power devices. The flash ROM versions (MSM66Q577L and MSM66Q579L) programmable with a single 2.7V (minimum) power supply and flash ROM version (MSM66Q577) programmable with a single 5V power supply are also included in the family. These versions are easily adaptable to quick specification changes and to new product revisions.
      And these are the special features of MSM66579 family: the first one is High-performance CPU, which including: The family includes the high-performance CPU, powerful bit manipulation instruction set, full symmetrical addressing mode, and ROM WINDOW function, and also provides the best optimized C compiler support. And the second one is A variety of power saving modes, which including: attaching a 32.768-kHz crystal produces a real-time clock signal from the internal clock timer. Use of a single clock in place of dual clocks is possible. Switching the CPU clock to this clock signal, 1/2 *main clock, or 1/4 *main clock, then produces operation in a low power consumption mode. The clock gear function allows a 1/2 *or 1/4 *main clock to be selected for the CPU operating clock. The MSM66579 family provides a wide range of standby control functions. In addition to the usual STOP mode that stops the oscillator, there are the quick restart STOP mode that shuts down the CPU and peripherals but leaves the oscillator running, and the HALT mode that shuts down the CPU but leaves the peripherals running. And the third one is Variety of multifunctional serial ports, which means: The MSM66579 family includes two channels of built-in synchronous serial ports with 32-byte FIFO implementing an auto transfer function. The family allows multi-byte 1-frame information which consists of address, command, and data to be easily and efficiently transmitted to or received from a serial interface type peripheral LSI device. The MSM66579 family also allows multi-byte character information to be easily and efficiently transmitted to or received from an LCD module. In addition, the family has two channels of combined UART/synchronous serial ports, and provides four channels of serial interfaces.Maskable * 8ch Interrupt priority 3 levels.