Rainbow Electronics AT89C51SND1C - Manual (Page 38)

38
AT8xC51SND1C
4109E–8051–06/03
Figure 21. Interrupt Control System
EI2C
IEN1.1
EMMC
IEN1.0
EUSB
IEN1.6
ESPI
IEN1.2
EX0
IEN0.0
00
01
10
11
External
Interrupt 0
INT0
EA
IEN0.7
EX1
IEN0.2
External
Interrupt 1
INT1
ET0
IEN0.1
Timer 0
EMP3
IEN0.5
MP3
Decoder
ET1
IEN0.3
Timer 1
EAUD
IEN0.6
Audio
Interface
EADC
IEN1.3
A to D
Converter
SPI
Controller
USB
Controller
EKB
IEN1.4
Keyboard
MMC
Controller
TWI
Controller
IPH/L
Interrupt Enable Lowest Priority Interrupts
Highest
KIN3:0
Priority Enable
SCK
SI
SO
SCL
SDA
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
Priority
Interrupts
ES
IEN0.4
Serial
Port
00
01
10
11
TXD
RXD
MCLK
MDAT
MCMD
AIN1:0
D+
D-