ST92T163 ST Microelectronics, ST92T163 Datasheet - Page 63

• Manufacturer Part Number: ST92T163
• Description: 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS
• Manufacturer: ST Microelectronics

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 selected between the INT7 pin 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 30).
Figure 30. Wake-Up Lines / Interrupt Management Unit Block Diagram
STOP
Note: Reset Signal
on stop bit is
stronger than
the set signal
WKUP[ 7:0]
SW SETT ING
WUCTR L
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
WUMRH
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
WUPRH
WUTRH
TO RCCU - Stop Mode Control
0
TRIGGERING LEVEL REGISTERS
PENDING REQUEST REGISTERS
MASK REGISTERS
INTD1 - External Interrupt Channel
ST92163 - INTERRUPTS
TO CPU
INT7
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