E0C88832/88862 TECHNICAL MANUAL
EPSON
113
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Interrupt and Standby Status)
5.14 Interrupt and Standby Status
■
Types of interrupts
Six systems and 15 types of interrupts have been
provided for the E0C88832/88862.
External interrupt
•K00–K07 input interrupt (2 types)
•K10 input interrupt (1 type)
Internal interrupt
•Clock timer interrupt (4 types)
•Stopwatch interrupt (3 types)
•Programmable timer interrupt (2 types)
•Serial interface interrupt (3 types)
An interrupt factor flag that indicates the genera-
tion of an interrupt factor and an interrupt enable
register that sets enable/disable for interrupt
requests have been provided for each interrupt
and interrupt generation can be optionally set for
each factor.
In addition, an interrupt priority register has been
provided for each system of interrupts and the
priority of interrupt processing can be set to 3
levels in each system.
Figure 5.14.1 shows the configuration of the
interrupt circuit.
Refer to the explanations of the respective periph-
eral circuits for details on each interrupt.
Fig. 5.14.1 Configuration of interrupt circuit
FTM32
ETM32
32 Hz
FTM8
ETM8
8 Hz
FTM2
ETM2
2 Hz
FTM1
ETM1
1 Hz
Clock timer
FSW100
ESW100
100 Hz
FSW10
ESW10
10 Hz
FSW1
ESW1
1 Hz
Stopwatch
timer
FSERR
ESERR
Error
FSREC
ESREC
Receive
FSTRA
ESTRA
Transmit
Serial
interface
FPT1
EPT1
Timer 1
FPT0
EPT0
Timer 0
Program-
mable
timer
FK1
EK1
K10
FK0H
EK0H
K04–K07
FK0L
EK0L
K00–K03
Input port
PTM0
PTM1
PSW0
PSW1
PSIF0
PSIF1
PK00
PK01
PK10
PK11
PPT0
PPT1
Interrupt vector
address generation
circuit
NMI
IRQ3
IRQ2
IRQ1
Data bus
Vector
address
Interrupt priority
level judgement
circuit
Interrupt factor flag
Interrupt enable register
Interrupt priority register
Содержание 0C88832
Страница 6: ......