MC908JB16DWE Datasheet, PDF (283/332 Pages) Freescale Semiconductor, Inc – Microcontrollers

External Interrupt (IRQ)
ACK
RESET
VECTOR
FETCH
DECODER
V_DD
IRQPD
IRQ
INTERNAL
PULLUP
DEVICE
HIGH
VOLTAGE
DETECT
"1"
D ^CLR Q
CK
IRQ
FF
SYNCHRO-
NIZER
IMASK
TO MODE
SELECT
LOGIC
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQF
IRQ
INTERRUPT
REQUEST
TO PTE4 PULLUP
ENABLE CIRCUITRY
PTE4
PTE4IE
MODE
"1"
READ IOCR
D ^CLR Q
CK
PTE4IF
Figure 15-1. IRQ Module Block Diagram
Addr.
$001C
$001E
Register Name
Bit 7
6
5
4
3
IRQ Option Control Register ^{Read: 0}
0
0
0
0
(IOCR) _Write:
Reset: 0
0
0
0
0
IRQ Status and Control Register ^{Read: 0}
0
0
0
IRQF
(ISCR) _Write:
Reset: 0
0
0
0
0
= Unimplemented
Figure 15-2. IRQ I/O Register Summary
2
1
Bit 0
PTE4IF
PTE4IE IRQPD
0
0
0
0
IMASK MODE
ACK
0
0
0
MC68HC908JB16 — Rev. 1.1
Freescale Semiconductor
External Interrupt (IRQ)
Technical Data
283