Legend
Request Flag -no auto reset in ISR
xxF
xxF Request Flag-auto reset in ISR
xxE Enable Bit
Interrupt
Request
Name
Flags
A/D
ADF
EADI
Time Base 0
TB0F
TB0E
Time Base 1
TB1F
TB1E
PINT
PEF
Comparator
CF
EEPROM
E2F
EE2I
LVD
LVDF
ELVDI
Interrupts contained within
Multi-Function Interrupts
The external interrupt pins are connected to an internal filter to reduce the possibility of unwanted
external interrupts due to adverse noise or spikes on the external interrupt input signal. As this
internal filter circuit will consume a limited amount of power, a configuration option is provided
to switch off the filter function, an option which may be beneficial in power sensitive applications,
but in which the integrity of the input signal is high. Care must be taken when using the filter on/off
configuration option as it will be applied not only to both the external interrupt pins but also to the
Timer/Event Counter external input pins. Individual external interrupt or Timer/Event Counter pins
cannot be selected to have a filter on/off function.
Rev. 1.40
TinyPower
Flash MCU with OPA & Comparators
TM
F i l t e r O n / O f f
C o n f i g u r a t i o n O p t i o n
I N T C 0
F i l t e r
I N T C 1
F i l t e r
EMI auto disabled in ISR
Interrupt
Request
Name
Flags
INT0
EIF0
INT1
EIF1
Enable
Bits
Timer/Event
T0F
Counter0
Timer/Event
Counter1
SIM
SIMF
EPI
M.Funct .
MFF
ECI
Interrupt Structure
126
HT45F23A/HT45F24A
M C U
E x t e r n a l I N T . 0
E x t e r n a l I N T . 1
Enable
Master
Bits
Enable
EEI0
EMI
EEI1
EMI
ET0I
EMI
ET1I
T1F
EMI
EMI
ESIM
EMFI
EMI
Priority
High
Vector
04H
08H
0CH
10H
14H
18H
Low
March 29, 2019
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