FEDL66525-02

OKI Semiconductor

ML66525 Family

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7. Multifunctional PWM

The family devices support both 8- and 16-bit PWM operations. Choosing between the time base counter

output and the overflow from an 8-bit auto-reload time as the PWM counter clock source provides a great

number of possibilities over a broad frequency range. The 16-bit PWM configuration supports a high-speed

synchronization mode that generates a high-precision output signal with less ripple suitable for

digital-to-analog applications.

8. Programmable pull-up resistors

Building the pull-up resistors into the chip contributes overall design compactness.

Making them programmable on a per-bit basis allows complete flexibility in circuit board layout and system

design. These programmable pull-up resistors are available for all I/O pins except ports that have specific

functions such as oscillator connection pins.

9. High-speed bus interface

The interface to external devices uses separate data and address buses.

This arrangement permits a rapid bus access for controlling the system from the microcontroller.

10. A variety of external interrupts

There are a total of seven interrupt channels for use in communicating with external devices; six channels for

maskable interrupts and one channel for non-maskable interrupts.