em78p809n ELAN Microelectronics Corp, em78p809n Datasheet - Page 58

• Manufacturer Part Number: em78p809n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

EM78P809N
8-Bit Microcontroller
54 •
4.15 Interrupt
WDTE
The EM78P809N has 15 interrupts (9 external, 6 internal) listed below:
Table 9.. Interrupt Vector
ISFR0, ISFR1 and ISFR2 are the interrupt status registers that record the interrupt
requests in the relative flags/bits. IMR1 and IMR2 are the interrupt mask registers. The
global interrupt is enabled by the ENI instruction and is disabled by the DISI instruction.
Power-on
Voltage
Detector
Reset
Internal /
External
External
External
External
External
External
External
External
External
External
Internal
Internal
Internal
Internal
Internal
Internal
/RESET
Interrupt Source
Oscillator
Fig. 29.Controller Reset Block Diagram
UART Receive error
UART Transmit
UART Receive
WDT
Reset
WDT
INT0
INT1
INT3
INT5
TCC
TBT
TC3
TC4
TC2
SPI
AD
WDT Timeout
Enable Condition
(This specification is subject to change without further notice)
ENI + INT0EN=1
ENI+UERRIE=1
ENI + TCIE0=1
ENI + TCIE3=1
ENI + TCIE4=1
ENI + TCIE2=1
ENI + EXIE1=1
ENI + EXIE3=1
ENI + EXIE5=1
ENI + URIE=1
ENI + ADIE=1
ENI + TBIE=1
ENI + UTIE=1
ENI + SPIE=1
VDD
WDTEN
-
D
CLK
CLR
Product Specification (V1.0) 07.26.2005
Q
Setup Time
Int. Flag
UERRIF
EXIEF0
WDTIF
TCIF0
EXIF1
TCIF3
TCIF4
EXIF3
TCIF2
EXIF5
TBEF
TBFF
TBIF
SPIF
ADIF
-
Int. Vector Priority
0000
0003
0006
0009
000F
0012
0015
0018
001B
0021
0024
0027
002A
0030
0033
0036
RESET
Low 15
High 0
CLK
10
11
12
13
14
1
2
3
4
5
6
7
8
9