w78e516b Winbond Electronics Corp America, w78e516b Datasheet - Page 10

• Manufacturer Part Number: w78e516b
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

XICON - external interrupt control (C0H)
PX3: External interrupt 3 priority high if set
EX3: External interrupt 3 enable if set
IE3: If IT3 = 1, IE3 is set/cleared automatically by hardware when interrupt is detected/serviced
IT3: External interrupt 3 is falling-edge/low-level triggered when this bit is set/cleared by software
PX2: External interrupt 2 priority high if set
EX2: External interrupt 2 enable if set
IE2: If IT2 = 1, IE2 is set/cleared automatically by hardware when interrupt is detected/serviced
IT2: External interrupt 2 is falling-edge/low-level triggered when this bit is set/cleared by software
Eight-source interrupt information
External Interrupt 0
Timer/Counter 0
External Interrupt 1
Timer/Counter 1
Serial Port
Timer/Counter 2
External Interrupt 2
External Interrupt 3
INTERRUPT SOURCE
PX3
EX3
ADDRESS
VECTOR
IE3
0BH
1BH
2BH
03H
13H
23H
33H
3BH
POLLING SEQUENCE
IT3
WITHIN PRIORITY
0 (highest)
7 (lowest)
LEVEL
- 10 -
1
2
3
4
5
6
PX2
Publication Release Date: April 22, 2008
REQUIRED
SETTINGS
EX2
XICON.2
XICON.6
ENABLE
IE.0
IE.1
IE.2
IE.3
IE.4
IE.5
IE2
W78E516B
INTERRUPT TYPE
EDGE/LEVEL
XICON.0
XICON.3
TCON.0
TCON.2
Revision A12
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IT2