w78le58 Winbond Electronics Corp America, w78le58 Datasheet - Page 8

• Manufacturer Part Number: w78le58
• 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:
P4CONB (C3H)
PX3
INTERRUPT
SOURCE
External Interrupt 0
Timer/Counter 0
External Interrupt 1
Timer/Counter 1
Serial Port
Timer/Counter 2
External Interrupt 2
External Interrupt 3
BIT
7, 6
P43FUN1
P43FUN0
EX3
NAME
00: Mode 0. P4.3 is a general purpose I/O port which is the same as Port1.
01: Mode 1. P4.3 is a Read Strobe signal for chip select purpose. The address
10: Mode 2. P4.3 is a Write Strobe signal for chip select purpose. The address
11: Mode 3. P4.3 is a Read/Write Strobe signal for chip select purpose. The
IE3
range depends on the SFR P43AH, P43AL, P43CMP1 and P43CMP0.
range depends on the SFR P43AH, P43AL, P43CMP1 and P43CMP0.
address range depends on the SFR P43AH, P43AL, P43CMP1, and
P43CMP0.
VECTOR
ADDRESS
03H
0BH
13H
1BH
23H
2BH
33H
3BH
IT3
POLLING
SEQUENCE WITHIN
PRIORITY LEVEL
0 (highest)
1
2
3
4
5
6
7 (lowest)
PX2
- 8 -
FUNCTION
EX2
Preliminary W78LE58
ENABLE
REQUIRED
SETTINGS
IE.0
IE.1
IE.2
IE.3
IE.4
IE.5
XICON.2
XICON.6
IE2
IT2
INTERRUPT
TYPE
EDGE/LEVEL
TCON.0
-
TCON.2
-
-
-
XICON.0
XICON.3