ST7MC2N6T3 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7MC2N6T3

8-bit MCU with nested interrupts, Flash, 10-bit ADC, brushless motor control, five timers, SPI, LINSCI™

STMicroelectronics 

ST7MC1xx/ST7MC2xx

INTERRUPTS (Cont’d)

7.7 EXTERNAL INTERRUPT CONTROL REGISTER (EICR)

Read / Write

Reset Value: 0000 0000 (00h)

7

0

IS11 IS10 IPB IS21 IS20 IS31 IS30 IPA

Bit 7:6 = IS1[1:0] ei2 sensitivity

The interrupt sensitivity, defined using the IS1[1:0]

bits, is applied to the following external interrupts:

- ei2 (port C3..1)

IS11 IS10

External Interrupt Sensitivity

IPB bit =0

IPB bit =1

These 2 bits can be written only when I1 and I0 of

the CC register are both set to 1 (level 3).

Bit 5 = IPB Interrupt polarity for port C

This bit is used to invert the sensitivity of the port

C[3:1] external interrupts. It can be set and cleared

by software only when I1 and I0 of the CC register

are both set to 1 (level 3).

0: No sensitivity inversion

1: Sensitivity inversion

Bit 4:3= IS2[1:0] ei1sensitivity

The interrupt sensitivity, defined using the IS2[1:0]

bits, is applied to the following external interrupts:

- ei1 (port A3, A5...A7)

00

Falling edge &

low level

Rising edge

& high level

0 1 Rising edge only Falling edge only

1 0 Falling edge only Rising edge only

11

Rising and falling edge

- ei2 (port C0, B7..6)

IS21 IS20

00

01

10

11

External Interrupt Sensitivity

Falling edge & low level

Rising edge only

Falling edge only

Rising and falling edge

IS11 IS10

00

01

10

11

External Interrupt Sensitivity

Falling edge & low level

Rising edge only

Falling edge only

Rising and falling edge

Bit 2:1= IS3[1:0] ei0sensitivity

The interrupt sensitivity, defined using the IS2[1:0]

bits, is applied to the following external interrupts:

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