LC87F1HC4B

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SIO9: Synchronous serial interface

1) LSB first/MSB first mode selectable

2) Transfer clock cycle: 4/3 to 1020/3 tCYC

3) Automatic continuous data transmission (1 to 4096 bytes, specifiable in 1 byte units)

(Suspension and resumption of data transmission possible in 1 byte units or word units)

4) Auto-start-on-falling-edge function

5) Clock polarity selectable

6) CRC16 calculator circuit built in

Full Duplex UART

1) Data length : 7/8/9 bits selectable

2) Stop bits

: 1 bit (2 bits in continuous transmission mode)

3) Baud rate

: 16/3 to 8192/3 tCYC

AD Converter: 8 bits

 12 channels

PWM: Multifrequency 12-bit PWM

 2 channels

Infrared Remote Control Receiver Circuit

1) Noise rejection function (noise filter time constant: Approx. 120

s when the 32.768kHz crystal oscillator is

selected as the base clock)

2) Supports data encoding systems such as PPM (Pulse Position Modulation) and Manchester encoding.

3) X'tal HOLD mode reset function

USB Interface (host control function)

1) Compliant with full-speed (12M bps) specifications

2) Supports 4 transfer types (control transfer, bulk transfer, interrupt transfer, and isochronous transfer).

Audio Interface

1) Sampling frequency (fs)

: 32kHz, 44.1kHz, 48kHz

2) Master clock frequency (internal PLL) : 12.288MHz, 16.9344MHz, 18.432MHz

3) Bit clock selectable

: 48fs/64fs

4) Data bit length

: 16/18/20/24 bits

5) LSB first/MSB firsts selectable

6) Left-justification/right-justification selectable

Watchdog Timer

Watchdog timer using external RC circuitry

Interrupt and reset signals selectable

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Clock Output Function

1) Can output a clock with a clock rate of 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, or 1/64 of the source oscillator clock selected

as the system clock.

2) Can output the source oscillation clock for the subclock.