LC651306A/04A/02A/01A

No.6727-2/21

7) Flexible I/O port

• Number of ports : 5 ports / 18 pins (max.)

• All ports

: Input / output common

Input / output capacity voltage

15V max. (open-drain specification C and D only)

Output current

20 mA max. sink current (Can drive an LED

directly)

• Support options for system specification

A. Open drain output, pull-up resistor : all ports in bit unit

B. Output level in the reset mode

: high/low level for port C and D specified in 4-bit unit

8) Interrupt function

Interrupt by timer overflow (can be tested under program control)

Interrupt by the state of the INT pin or completion of transmission/reception at serial I/O port (can be tested under

program control)

9) Stack level :

8 levels (common use with interrupt)

10) Timer :

4-bit variable prescaler + 8-bit programmable counter

11) Clock oscillation options for user’s intended system

• Oscillator circuit options : two-pin RC oscillator

two-pin ceramic oscillator

• Divider circuit options :

No divider

built-in divide by 3

built-in divide by 4

12) Continuous square wave output (64 times of the cycle time)

13) AD converter (successive approximation)

• Precise conversion (expressed in 8 bits), 8 input channels

14) Watchdog timer

• RC circuit time constant

• Watchdog timer reset function can be assigned to an external pin by the option.

15) Low voltage detection circuit

• Can be implemented by the option.

16) Factory shipment

• DIP24S, MFP24S, SSOP24