DS80CH11 Maxim, DS80CH11 Datasheet - Page 22

• Manufacturer Part Number: DS80CH11
• Description: The system energy manager is a highly integrated microcontroller that provides several key features for systems including key scanning and control, battery and power management, as well as two 2-Wire serial I/O Ports
• Manufacturer: Maxim

3.6 INTERRUPT CONTROL
The SEM provides 16 sources of interrupt with three
priority levels.
enabled, always has the highest priority. There are two
remaining user selectable priorities: high and low. If two
interrupts that have the same priority occur simulta-
INTERRUPT PRIORITY Table 3–2
INTERRUPT CONTROL SUMMARY Table 3–3
DS80CH11
011200 22/88
PFI
INT0
TF0
INT1
TF1
SCON0
TF2
AMI
2WI1
ADI
2WI2
KBI
PBI1
KDI
WDI
PBI2
Power Fail
External 0
Timer 0
External 1
Timer 1
Serial Port 0
Timer 2
Activity monitor
NAME
INTERRUPT
SOURCE
Power Fail Interrupt
External Interrupt 0
Timer 0
External Interrupt 1
Timer 1
TI0 or RI0 from Serial Port 0
Timer 2
Activity Monitor Interrupt
2–Wire Serial Port 1
A/D End of Conversion
2–Wire Serial Port 2
Keyboard Buffer Input
Power Mgmt. Buffer Input #1
Key Detect Input
WatchDog Periodic Interrupt
Power Mgmt. Buffer Input #2
The Power–fail Interrupt (PFI), if
DESCRIPTION
FLAG(S)
AMF7–0
RI0,TI0
TF0
TF1
TF2
PFI
IE0
IE1
WDCON.4
SCON0.0/
SCON0.1
T2CON.7
AMF.7–0
TCON.1
TCON.5
TCON.3
TCON.7
FLAG
LOC.
VECTOR
33h
03h
0Bh
13h
1Bh
23h
2Bh
3Bh
43h
4Bh
53h
5Bh
63h
6Bh
73h
7Bh
ENABLE
neously, the hardware–determined precedence given
below determines which is a acted upon. Except for the
PFI, all interrupts that are new to the 8051 family have a
lower natural priority than the originals.
EPFI
EAM
EX0
ET0
EX1
ET1
ES0
ET2
NATURAL
PRIORITY
10
12
13
14
15
16
11
ENABLE
WDCON.5
1
2
3
4
5
6
7
8
9
LOC.
IE.0
IE.1
IE.2
IE.3
IE.4
IE.5
IE.6
PRIORITY
PAM
PX0
PX1
PS0
PT0
PT1
PT2
N/A
8051/DALLAS
DALLAS
DALLAS
DALLAS
DALLAS
DALLAS
DALLAS
DALLAS
DALLAS
DALLAS
DALLAS
8051
8051
8051
8051
8051
8051
PRIORITY
LOC.
N/A
IP.0
IP.1
IP.2
IP.3
IP.4
IP.5
IP.6