LC72F3661

No.0461-2/15

• Interrupt nesting levels

: 11 levels

Interrupts are prioritized in hardware as follows :

HOLD pin>INT0 pin>INT1 pin> INT4 pin>INT5 pin>

S-I/O0>S-I/O1>Internal TMR0>Internal TMR1>Internal TMR2>

Internal TMR3

• A/D Converter

: 8-bit resolution and 6 inputs

• General-purpose ports

: Input ports : 10

Output ports : 2

I/O ports : 48 (These pins can be switched between input and output in 1-bit units.)

• PLL block

: Includes a sub-charge pump for high-speed locking.

Supports dead zone control.

Built-in unlock detection circuit

Twelve reference frequencies : 1kHz, 3kHz, 3.125kHz, 5kHz, 6.25kHz, 9kHz,

10kHz, 12.5kHz, 25kHz, 30kHz, 50kHz, and 100kHz

• Universal counter

: This 20-bit counter can be used for either frequency or period measurement and

supports four measurement (calculation) periods : 1ms, 4ms, 8ms, and 32ms

• Timers

: Two fixed timers and two programmable timers (8-bit counters)

TMR0

: Supports four periods : 10

µs, 100µs, 1ms, and 5ms

TMR1

: Supports four periods : 10

µs, 100µs, 1ms, and 10ms

TMR2 and TMR3 : Programmable 8-bit counters.

Input clocks with 10

µs, 100µs, and 1ms

One 125-ms timer flip-flop provided

• Beep circuit

: Provides 12 fixed beep tones :

500Hz, 1kHz, 2kHz, 2.08kHz, 2.2kHz, 2.5kHz, 3.33kHz,

3.75kHz, 4.17kHz, and 7.03kHz

Programmable 8-bit beep tone generator.

Reference clocks with frequencies of 50kHz, 15kHz, and 5kHz.

• Reset

: Built-in voltage detection reset circuit

External reset pin

• Cycle time

: 1.33

µs/833ns (All instructions are one word), X’tal : 4.5MHz/7.2MHz

(4.5MHz when initialization is to be performed. When 7.2MHz is used, select 4.5MHz

by software.)

• Halt mode

: Stops the operation clock of the controller.

There are four conditions that can clear Halt mode : Interrupt requests,

timer flip-flop overflows, port PA inputs, and HOLD pin inputs.

• Operating supply voltage : 4.5 to 5.5V (Microcontroller block only : 3.5 to 5.5V)

• Package

: QIP80E

• Development tools

: Emulator

: RE128V

Evaluation chip

: LC72EV3780

Evaluation board

: EB-72EV3780