W78C354 Datasheet, PDF (22/44 Pages) Winbond – MONITOR MICROCONTROLLER

W78C354
SIO1 port
SCLIN
SCL OUT
SDAIN
SDA OUT
0
Support DDC2B/2B+
1
DDC1 port
SDA
SCL
Support DDC1
ENDDC1
P1.2/DSCL
P1.3/DSDA
V IN
H. Interrupts
Figure 5. DDC port
The W78C354 has six interrupt sources. Five (except INT1, at vector address 0013H) are identical to
those in the 80C51 series, while the sixth (at vector address 002BH) is newly added. All the interrupt
sources and the corresponding interrupt vector addresses for the W78C354 are described in the
following table:
SOURCE
VECTOR
ADDRESS
DESCRIPTION
PRIORITY
IE0
0003H
External interrupt 0 (same as the 80C31)
Highest
TF0
000BH
Timer 0 overflow interrupt (same as the 80C31)
*1
0013H
Replaces INT1 of the 80C31
TF1
001BH
Timer 1 overflow interrupt (same as the 80C31)
RI+TI
0023H
Serial port interrupt (same as the 80C31)
*2
002BH
New (similar to TF2+EXF2 in the 80C32)
Lowest
Notes:
*1. DSCLINT+ADCINT+TIMEOUT+SOAINT+VEVENT+PARAINT+DDC1INT.
*2. This is the interrupt generated by the I²C in the DDC port.
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