mpc89x58a Megawin Technology, mpc89x58a Datasheet - Page 23
mpc89x58a
Manufacturer Part Number
mpc89x58a
Description
8-bit Micro-controller
Manufacturer
Megawin Technology
Datasheet
1.MPC89X58A.pdf
(39 pages)
- Current page: 23 of 39
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IE2
EX3 : If set, Enables external interrupt 3.
IE3
IT3
PX2 : If set, Set priority for external interrupt 3 higher
EX2 : If set, enables external interrupt 2.
IT2
IP (or XICON) and IPH are combined to form 4-level priority interrupt as the following table.
SFR: XICON (External Interrupt Control):
PX3 : If set, Set priority for external interrupt 3 higher
Watchdog Timer
MEGAWIN
WIDL
ENW
IDLE
Bit-7
PX3
CLK/12
{IPH.x , IP.x}
: Interrupt 3 Edge flag. Sets by hardware when external interrupt edge detected. Cleared when
: Interrupt 3 type control bit. Set/Cleared by software to specified falling edge/low level triggered
: Interrupt 2 Edge flag. Sets by hardware when external interrupt edge detected. Cleared when
: Interrupt 2 types control bit. Set/Cleared by software to specify falling edge/low level triggered
interrupt processed.
interrupt processed.
interrupt.
interrupt.
11
10
01
00
Bit-6
EX3
Bit-5
IE3
8-bit pre-scalar timer
CLRW
Priority
Level
1 (highest)
2
3
4
MPC89x58A Data Sheet
Bit-4
IT3
PS0
PS1
PS2
Bit-3
PX2
8
Bit-2
EX2
Bit-1
IE2
15-bit WDT
Bit-0
IT2
RESET
23
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