ST92F120JR9T datasheet(86/320 Pages) STMICROELECTRONICS

86 / 320 page

86/320

ST92F120 - INTERRUPTS

5.11 WAKE-UP / INTERRUPT LINES MANAGEMENT UNIT (WUIMU)

5.11.1 Introduction

The Wake-up/Interrupt Management Unit extends

the number of external interrupt lines from 8 to 23

(depending on the number of external interrupt

lines mapped on external pins of the device). It al-

lows the source of the INTD1 external interrupt

channel to be selected between the INT7 pin

(when available) and up to 16 additional external

Wake-up/interrupt pins.

These 16 WKUP pins can be programmed as ex-

ternal interrupt lines or as wake-up lines, able to

exit the microcontroller from low power mode

(STOP mode) (see Figure 41).

5.11.2 Main Features

Supports up to 16 additional external wake-up

or interrupt lines

Wake-Up lines can be used to wake-up the ST9

from STOP mode.

Programmable selection of wake-up or interrupt

Programmable wake-up trigger edge polarity

All Wake-Up Lines maskable

Note: The number of available pins is device de-

pendent. Refer to the device pinout description.

Figure 41. Wake-Up Lines / Interrupt Management Unit Block Diagram

WUTRH

WUTRL

WUPRH

WUPRL

WUMRH

WUMRL

TRIGGERING LEVEL REGISTERS

PENDING REQUEST REGISTERS

MASK REGISTERS

WKUP[ 7:0]

WKU P[15:8]

NMI

WUCTR L

SW SETT ING1)

TO CPU

TO RCCU - Stop Mode Control

TO CPU

INTD1 - External Interrupt Channel

INT7

Note 1: The reset signal on the Stop bit is stronger than the set signal.

ST92F120JR9T 数据表(PDF) 86 Page - STMicroelectronics

ST92F120JR9T 数据表(HTML) 86 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载