ST7L09 datasheet(30/104 Pages) STMICROELECTRONICS

Part #	ST7L09

Description	8-bit MCU for automotive with single voltage Flash memory, data EEPROM, ADC, timers, SPI

PDF	104 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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30 / 104 page

ST7L05, ST7L09

30/104

INTERRUPTS (Cont’d)

EXTERNAL INTERRUPT CONTROL REGISTER

(EICR)

Read/Write

Reset Value: 0000 0000 (00h)

Bits 7:6 = IS3[1:0] ei3 sensitivity

These bits define the interrupt sensitivity for ei3

(Port B0) according to Table 8.

Bits 5:4 = IS2[1:0] ei2 sensitivity

These bits define the interrupt sensitivity for ei2

(Port B3) according to Table 8.

Bits 3:2 = IS1[1:0] ei1 sensitivity

These bits define the interrupt sensitivity for ei1

(Port A7) according to Table 8.

Bits 1:0 = IS0[1:0] ei0 sensitivity

These bits define the interrupt sensitivity for ei0

(Port A0) according to Table 8.

Note: These 8 bits can be written only when the I

bit in the CC register is set.

Table 8. Interrupt Sensitivity Bits

IS31

IS30

IS21

IS20

IS11

IS10

IS01

IS00

ISx1

ISx0

External Interrupt Sensitivity

Falling edge & low level

Rising edge only

Falling edge only

Rising and falling edge

ST7L09 Datasheet(PDF) 30 Page - STMicroelectronics