UPSD3212C, UPSD3212CV
Table 20. Description of the IE Bits.
Bit
Symbol
Function
Disable all interrupts:
0: no interrupt with be acknowledged
1: each interrupt source is individually enabled or disabled by setting or clearing its
enable bit
7
EA
6
5
4
3
2
1
0
—
Reserved
ET2
ES
Enable Timer 2 Interrupt
Enable USART Interrupt
Enable Timer 1 Interrupt
Enable External Interrupt (Int1)
Enable Timer 0 Interrupt
Enable External Interrupt (Int0)
ET1
EX1
ET0
EX0
Table 21. Description of the IEA Bits
Bit
7
Symbol
—
Function
Not used
6
—
Not used
5
—
Not used
4
ES2
—
Enable 2nd USART Interrupt
Not used
3
2
—
Not used
1
EI2C
—
Enable I²C Interrupt
Not used
0
Table 22. Description of the IP Bits
Bit
7
Symbol
—
Function
Reserved
6
—
Reserved
5
PT2
PS
Timer 2 Interrupt priority level
USART Interrupt priority level
Timer 1 Interrupt priority level
External Interrupt (Int1) priority level
Timer 0 Interrupt priority level
External Interrupt (Int0) priority level
4
3
PT1
PX1
PT0
PX0
2
1
0
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STMICROELECTRONICS [ ST ]
