em78p257 ELAN Microelectronics Corp, em78p257 Datasheet - Page 41

• Manufacturer Part Number: em78p257
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

This specification is subject to change without prior notice.
/IRQn
In EM78P257A/B, each individual interrupt source has its own interrupt vector as depicted in Table 9.
VCC
Table 9 Interrupt vector
/RESET
Interrupt sources
Interrupt vector
D
RF
ENI/DISI
CLK
3EC
3EE
3FA
3FC
3FE
3F0
3F2
3F4
3F6
3F8
P
R
C
L
Q
Q
_
IOCF
Fig. 13 Interrupt backup diagram
Comparator CO4 interrupt
Comparator CO3 interrupt
Comparator CO2 interrupt
Comparator CO1 interrupt
Fig. 12 Interrupt input circuit
TCCC overflow interrupt
TCCB overflow interrupt
TCCA overflow interrupt
TCC overflow interrupt
Q
Q
_
Port 5 pin change
External interrupt
Interrupt status
IOCFRD
RFWR
P
R
C
L
CLK
41
D
RFRD
ACC
R3
IOCFWR
IRQn
IRQm
Interrupt
occurs
RETI
STACKACC
STACKR3
EM78P257
IOD
ENI/DISI
07.27.2004 (V1.4)
OTP ROM
INT