IA186EM-PQF100I-R datasheet(36/133 Pages) INNOVASIC

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IA186EM/IA188EM

Data Sheet

8/16-BIT Microcontrollers

As of Production Version -03

C (bit 5) – Cascade Mode. This bit enables cascade mode for int0 or int1 when set to 1.

LTM (bit 4) – Level-Triggered Mode. The int0 or int1 interrupt may be edge or level triggered

depending on the value of the bit. If LTM is 1, int0 or int1 is an active high level-sensitive interrupt.

If LTM is 0, int0 or int1 is a rising edge triggered interrupt. The interrupt int0 or int1 must remain

active (high) until acknowledged.

MSK (bit 3) – Mask. The int0 or int1 signal can cause an interrupt if the MSK bit is 0. The int0 or

int1 signal cannot cause an interrupt if the MSK bit is 1. The Interrupt Mask Register has a duplicate

of this bit.

PR2-PR0 (bit 2-0) – Priority. These bits define the priority of the serial port interrupt int0 or int1 in

relation to other interrupt signals. The interrupt priority is the lowest at 7 at reset. The values of PR2

– PR0 are shown in the above table (Priority Level).

TCUCON (032h) - Timer Control Unit Interrupt CONtrol Register.

Master Mode

The three timers have their interrupts assigned to types 08h, 12h, and 13h and are configured by this

The value of this register is 000Fh at reset.

5 4

Reserved

MSK

PR2-PR0

Reserved (bits 15-4) – Set to 0.

MSK (bit 3) – Interrupt Mask. An interrupt source may cause an interrupt if the MSK bit is 0. The

interrupt source cannot cause an interrupt if the MSK bit is 1. The Interrupt Mask Register has a

duplicate of this bit.

PR2-PR0 (bit 2-0) – Priority. These bits define the priority of the serial port interrupt in relation to

other interrupt signals. The interrupt priority is the lowest at 7 at reset. The values of PR2 – PR0 are

shown in the above table (Priority Level).

T2INTCON (03ah) - Timer INTerrupt CONtrol Register.

T1INTCON (038h)

T0INTCON (032h)

Slave Mode

The three timers, Timer2, Timer1, and Timer0, each have an interrupt control register, whereas in master

mode all three are masked and prioritized in one register (TCUCON).

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