FEDL66525-02

OKI Semiconductor

ML66525 Family

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FUNCTIONAL DESCRIPTION

1. High-performance CPU

The ML66525 family devices include the high-performance CPU, powerful bit manipulation instruction set, a

variety of symmetrical addressing modes, and ROM WINDOW function, and also supports the best-optimized

C compiler.

2. A variety of power saving modes

Attaching a 32.768-kHz crystal produces a real time clock signal from the internal clock timer. A single clock

can be used in place of dual clocks.

Switching the CPU clock to the dual clocks (1/2 or 1/4 of the main clock) enables operation in a low power

consumption mode. The clock gear function allows a 1/2 or 1/4 clock signal of the main clock to be selected as

the CPU operating clock.

The ML66525 family devices are provided with a wide range of standby control functions such as the STOP

mode that stops the oscillation circuit, the quick restart STOP mode that stops the CPU and peripherals while

the oscillation circuit is operating, and the HALT mode that shuts down the CPU while peripherals are

operating.

3. USB control

The family include USB controller which compliant with USB specification version 1.1 and can be transferred

data with 12Mbps circuit.

Also, USB controller have 6 kinds of endpoint and apply for control/bulk/isochronous/interrupt transfer.

With NAND Flash Memory control circuit, high speed data transfer is possible.

4. NAND Flash Memory control

The family include control circuit of NAND Flash Memory. Automatically data read from and write to outside

NAND Flash Memory with 528 byte.

Also, include ECC circuit which detect data error and correct data error.

5. ML66Q525B with flash memory programmable with single power supply

In addition to mask ROM version devices, the ML66525 family devices include the ML66Q525B with internal

128 Kbytes of flash memory that can be programmed with a single power supply. The flash memory of the

ML66Q525B can be programmed with a low power supply (2.4 to 3.6 V) using the internal voltage booster

circuit.

6. Multifunctional, high-precision analog-to-digital converter

The family devices include a high-precision 10-bit analog-to-digital converter with four channels and are 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.