PEDL66517-03

1Semiconductor

ML66517 Family

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SPECIAL FEATURES

1. High-performance CPU

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.

2. 3-phase PWM circuit for generating motor drive waveforms

The device includes a 16-bit three-phase PWM (six outputs) circuit designed specifically for generating AC

three-phase motor or DC three-phase brushless motor drive waveforms. PWM and level outputs can be switched

by compare and match circuitry and software, and the compare and match circuitry can switch the outputs in real

time.

The device has circuitry to fix the three-phase outputs at an inactive level by inputting malfunction signals from a

motor at the specific pin.

3. Capture inputs with digital filter filters

The device has two channels of capture inputs with 3/4 digital filters. The device is best suited to event interval

measurement, pulse width measurement, etc. in a high noise environment such as motor control. An optimum

filter can be selected according to noise width since a sampling interval of an input signal can be selected. A digital

filter OFF mode can also be selected.

4. High-speed multiplier

The device includes a dedicated high-speed multiplier.

The calculation time, 16 bits × 16 bits = 32 bits, is 200 ns (f = 25 MHz).

5. Clock multiplication circuit

The device includes a clock multiplication circuit in which the clock can be selected as a source clock (PLL OFF),

1 × clock, 2 × clock, or 4 × clock.

Therefore, the use of a low frequency oscillator (external clock) allows the device to internally operate at a high

speed, which achieves noise reduction and lower power consumption.

6. Flash memory version programmable with a single power supply

In addition to the mask ROM versions, the family includes the versions (ML66Q517 and ML66Q515) with 64 KB

flash memory that can be programmed with a single 5 V supply.

7. A high-precision A/D converter

The device has a high precision 10-bit A/D converter with eight channels.

An independent result register for each channel provides easy accessibility by software.

The A/D converter is activated in a channel select mode, and automatic conversion is also implemented in a scan

mode which scans from any designated channel to the last channel (ch 7).

8. Programmable pull-up resistors

Building the pull-up resistors into the chip contributes to 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 not already assigned specific functions (such as the

oscillator connection pins).