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■ DESCRIPTION

The MB89580B/BW series is a line of general-purpose, single-chip microcontrollers. In addition to a compact

instruction set, these microcontrollers contain a variety of peripheral functions, such as PLL clock control, timers, a serial interface, a PWM timer, and the USB function. In particular, these microcontrollers contain one USB function channel to support both full and low speeds.

■ FEATURES

? Package type

64-pin LQFP package (0.5 mm and 0.65 mm pitch)

? High-speed operations at low voltage

Minimum execution time : 0.33 μs (Automatically generates a 12 MHz main clock and a 48 MHz USB interface synchronization clock with an externally supplied 6 MHz clock and the internal PLL circuit.)

? F2MC-8L CPU core

Instruction set that is optimum to the controllers

-Multiplication and division instructions

-16-bit arithmetic operations

-branch instructions by bit testing

-bit manipulation instructions, etc.

? PLL clock control

The internal PLL clock circuit allows the use of low-speed clocks which are advantageous to noise characteristics. (6 MHz externally-supplied clock→12 MHz internal system clock)

? Various timers

8-bit PWM timer (can be used as either 8-bit PWM timer × 2 channels or PPG timer × 1 channel) Internal 21-bit timebase timer

? Internal USB transceiver circuit (Compatible with full and low speeds)

? USB function

Compliant to USB Protocol Revision 1.0

Support for both low and full speeds (selectable)

Allows four endpoints to be specified at maximum.

Types of transfer supported : control/interrupt/bulk/isochronous

Built-in DMAC (Maps the buffer for each endpoint on to the internal RAM to directly access the memory for

function’s send and receive data.)

? UART/serial interface

Built-in UART/SIO function (selectable by switching)

? External interrupt

External interrupt (level detection × 8 channels)

Eight inputs are independent of one another and can also be used for resetting from low-power consumption mode (the L-level detection feature available) .

? Low power consumption (standby mode supported)

Stop mode (There is almost no current consumption since oscillation stops.)

Sleep mode (This mode stops the running CPU.)

? A maximum of 53 general-purpose I/O ports

General-purpose I/O ports (CMOS) : 34

General-purpose output ports (CMOS) : 8

General-purpose I/O ports (Nch open drain) : 3

General-purpose input ports (CMOS 3.3 V input-compatible) : 8

? Parallel ports

Also serve as eight of the general-purpose I/O ports (CMOS)

Interrupt function available

Allows asynchronous read and write by external signals

? Power supply

Supply voltage : 3.0 V to 5.5 V