LC87F1A32A

No.A0704-3/26

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: 12 bits

× 12 channels

• 12-/8-bit resolution selectable AD converter

• Reference-voltage automatic generation control

PWM: Multifrequency 12-bit PWM

× 2 channels

Infrared Remote Controller Receiver Circuit

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

μs when the 32.768kHz crystal oscillator is

selected as the reference voltage source)

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

3) X'tal HOLD mode release function

USB Interface (function controller)

• Compliant with USB 2.0 Full-Speed

• Supports a maximum of 4 user-defined endpoints.

Endpoint

EP0

EP1

EP2

EP3

EP4

Control

-

-

-

-

Bulk

-

Interrupt

-

Transfer

Type

Isochronous

-

Max. payload

64

64

64

64

64

Watchdog Timer

• External RC watchdog timer

• Interrupt and reset signals selectable

Clock Output Function

1) Able to output selected oscillation clock 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 as system clock.

2) Able to output oscillation clock of sub clock.

Interrupts

• 28 sources, 10 vector addresses

1) Provides three levels (low (L), high (H), and highest (X)) of multiplex interrupt control. Any interrupt requests of

the level equal to or lower than the current interrupt are not accepted.

2) When interrupt requests to two or more vector addresses occur at the same time, the interrupt of the highest level

takes precedence over the other interrupts. For interrupts of the same level, the interrupt into the smallest vector

address takes precedence.

No.

Vector Address

Level

Interrupt Source

1

00003H

X or L

INT0

2

0000BH

X or L

INT1

3

00013H

H or L

INT2/T0L/INT4/USB bus active/Remote control receive

4

0001BH

H or L

INT3/INT5/base timer

5

00023H

H or L

T0H

6

0002BH

H or L

T1L/T1H

7

00033H

H or L

SIO0/USB bus reset/USB suspend/UART1 receive

8

0003BH

H or L

SIO1/USB endpoint/USB-SOF/SIO4/UART1 transmit

9

00043H

H or L

ADC/T6/T7

10

0004BH

H or L

Port 0/PWM0/PWM1

• Priority Level: X > H > L

• Of interrupts of the same level, the one with the smallest vector address takes precedence.