91400 RM (IM) HK No.6698-1/20

Ver.2.02

22599

Preliminary

Overview

The LC865632A/28A/24A/20A/16A/12A/08A microcontrollers are 8-bit single chip microcontrollers with the following

on-chip functional blocks :

- CPU : Operable at a minimum bus cycle time of 0.5µs (microsecond)

- On-chip ROM maximum capacity : 32K bytes

- On-chip RAM capacity : 640 bytes (LC865632A/28A/24A)

: 512 bytes (LC865620A/16A/12A/08A)

- 16-bit timer/counter (or two 8-bit timers)

- 16-bit timer/ PWM (or two 8-bit timers)

- 8-channel

× 8-bit AD converter

- Two 8-bit synchronous serial-interface circuits

- 13-source 10-vectored interrupt system

All of the above functions are fabricated on a single chip.

Features

(1) Read Only Memory (ROM)

: LC865632A

32512

× 8 bits

: LC865628A

28672

× 8 bits

: LC865624A

24576

× 8 bits

: LC865620A

20480

× 8 bits

: LC865616A

16384

× 8 bits

: LC865612A

12288

× 8 bits

: LC865608A

8192

× 8 bits

(2) Random Access Memory (RAM)

: LC865632A/28A/24A

640

× 8 bits

: LC865620A/16A/12A/08A

512

× 8 bits

(3) Bus Cycle Time / Instruction Cycle Time

The LC865632A/28A/24A/20A/16A/12A/08A are constructed to read ROM twice within one instruction cycle.

It has

1.7 times more performance capability within the same instruction cycle compared to our 4-bit microcontrollers

(LC66000 series).

Bus cycle time indicates the speed to read ROM.

Bus cycle time

cycle time

System clock oscillation

Oscillation Frequency

Voltage

0.5

µs

1.0

µs

Ceramic resonator oscillation

6MHz

4.5 - 6.0V

2.0

µs

4.0

µs

Ceramic resonator oscillation

1.5MHz

2.5 - 6.0V

3.75

µs

7.5

µs

RC resonator oscillation

800MHZ

2.5 - 6.0V

91.5

µs

183

µs

Crystal oscillation

32.568kHz

2.5 - 6.0V

8-Bit Single Chip Microcontroller

LC865632/28/24/20/16/12/08A

Ordering number : ENN*6698

CMOS IC