MSM66573 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM66573

16-Bit Microcontroller

Oki Electric Industry 

1Semiconductor

PEDL66573-02

MSM66573 Family

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. A variety of power saving modes

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 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.

3. MSM66Q573L and MSM66Q573 with flash memory programmable with single power supply

In addition to the regular mask ROM version, the family includes these versions with 64KB of flash memory that

can be programmed using a single power supply. For the MSM66Q573L, an internal booster circuit derives the

necessary program voltage from the device's low (2.4 V min) power supply, and the program voltage for the

MSM66Q573 is provided with a single 5 V power supply.

4. Multifunction, high-precision analog-to-digital converter

The family includes a high-precision 10-bit analog-to-digital converter with eight channels and is ideal for such

analog control functions as processing audio signals, processing sensor inputs, detecting key switch states, and

controlling battery use in portable equipment. Each channel has its own result register readily accessible from the

software. In addition to single-channel conversions, there is also a scan function offering automatic conversion

from the user's choice of starting channel through to the last channel.

5. Multifunction PWM

The family supports both 8- and 16-bit PWM operation. Choosing between the time-base counter output or

overflow from an 8-bit auto-reload timer as the PWM counter clock source provides a wide 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 control applications.

6. 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).

7. High-speed bus interface

The interface to external devices uses separate data and address buses. This arrangement permits rapid bus access

for controlling the system from the microcontroller.

8. Wide support for external interrupts

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

interrupts and one for non-maskable interrupts.

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