ST92141 STMicroelectronics, ST92141 Datasheet - Page 55

• Manufacturer Part Number: ST92141
• Description: 8/16-bit Mcu For 3-phase Ac Motor Control
• Manufacturer: STMicroelectronics

3.12 WAKE-UP / INTERRUPT LINES MANAGEMENT UNIT (WUIMU)
3.12.1 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 used for 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 25. Wake-Up Lines / Interrupt Management Unit Block Diagram
Note: Reset Signal
on stop bit is
stronger than
the set signal
Figure
25).
WKUP[7:0]
SW SETTING
WUCTRL
WUTRL
WUPRL
WUMRL
WKUP[15:8]
3.12.2 Main Features
Note: The number of available pins is device de-
pendent. Refer to the device pinout description.
1
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
WUMRH
WUPRH
WUTRH
TO RCCU - Stop Mode Control
0
TRIGGERING LEVEL REGISTERS
PENDING REQUEST REGISTERS
MASK REGISTERS
INT7 (not connected)
INTD1 - External Interrupt Channel
ST92141 - INTERRUPTS
TO CPU
55/179
1