SM89516B
8-Bit Micro-controller
64KB Flash
& 1KB RAM embedded
ET2: ET2=0 – Disable Timer 2 overflow or external reload interrupt.
ET2=1 – Enable Timer 2 overflow or external reload interrupt.
ES: ES=0 – Disable Serial channel interrupt.
ES=1 – Enable Serial channel interrupt.
ET1: ET1=0 – Disable Timer 1 overflow interrupt.
ET1=1 – Enable Timer 1 overflow interrupt.
EX1: EX1=0 – Disable external interrupt 1.
EX1=1 – Enable external interrupt 1.
ET0: ET0=0 – Disable Timer 0 overflow interrupt.
ET0=1 – Enable Timer 0 overflow interrupt.
EX0: EX0=0 – Disable external interrupt 0.
EX0=1 – Enable external interrupt 0.
Mnemonic: IE1
Address: A9h
7
-
6
-
5
-
4
-
3
-
2
-
1
0
-
Reset
00h
ETWSI
ETWSI: ETWSI =0 – Disable TWSI interrupt.
ETWSI =1 – Enable TWSI interrupt.
Mnemonic: IP
Address: B8h
7
6
5
4
3
2
1
0
Reset
-
-
PT2
PS
PT1
PX1
PT0
PX0
00H
PT2: Timer2 interrupt priority bit.
PS: Serial port interrupt priority bit.
PT1: Timer1 interrupt priority bit.
PX1: External interrupt 1 priority bit.
PT0: Timer 0 interrupt priority bit.
PX0: External interrupt 0 priority bit.
Mnemonic: IP1
Address: B9h
7
-
6
-
5
-
4
-
3
-
2
-
1
0
-
Reset
00H
PTWSI
PTWSI: TWSI interrupt priority bit.
Interrupt Priority Table
IP.x
1
Priority Level
(highest)
1
0
2
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M087 Ver A SM89516B 3/7/2014
- 39 -
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
