W742S81A Datasheet, PDF (20/47 Pages) Winbond – 4 BIT MICROCONTROLLER

W742S81A
Divider 0
overflow signal
SQ
R
Timer 0
underflow signal
SQ
R
RC port
signal change
SQ
R
Divider 1
overflow signal
SQ
R
Timer 1
underflow signal
SQ
R
Initial Reset
EN INT
MOV IEF,#I
EVF.0
IEF.0
EVF.1
IEF.1
EVF.2
IEF.2
EVF.4
EVF.7
IEF.4
IEF.7
Enable
Interrupt
Process
Circuit
Interrupt
Vector
Generator
004H
008H
00CH
014H
020H
Initial Reset
Disable
CLR EVF,#I instruction
DIS INT instruction
Figure 6-8 Interrupt event control diagram
6.14 Stop Mode Operation
In stop mode, all operations of the µC cease, and the MFP pin is kept to high. The µC enters stop mode
when the STOP instruction is executed and exits stop mode when an external trigger is activated (by a
falling signal on the RC). When the designated signal is accepted, the µC awakens and executes the next
instruction. To prevent erroneous execution, the NOP instruction should follow the STOP command. But
In the dual-clock slow operation mode, the STOP instruction will also disable the sub-oscillator oscillating;
all operations of the µC cease.
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