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HMS99C52 Datasheet(PDF) 25 Page - Hynix Semiconductor

Part # HMS99C52
Description  8-BIT SINGLE-CHIP MICROCONTROLLERS
PDF  43 Pages
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Manufacturer  HYNIX [Hynix Semiconductor]
Direct Link  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

HMS99C52 Datasheet(HTML) 25 Page - Hynix Semiconductor

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HMS99C5X Series
Jan. 2003 Ver 1.0
21
INTERRUPT SYSTEM
The HMS99C5X series provides 5 (4K bytes ROM version) or 6 (above 8K bytes ROM version) interrupt sourc-
es with two priority levels. Figure 5 gives a general overview of the interrupt sources and illustrates the request
and control flags.
Figure 5. Interrupt Request Sources
PT0
IP.1
PT1
IP.3
PT2
IP.5
PS
IP.4
PX0
IP.0
PX1
IP.2
EA
IE.7
ET0
IE.1
ET1
IE.3
ET2
IE.5
ES
IE.4
EX0
IE.0
EX1
IE.2
TF0
TCON.5
TF1
TCON.7
≥1
TF2
T2CON.7
EXF2
T2CON.6
≥1
RI
SCON.0
TI
SCON.1
IE0
TCON.1
IE1
TCON.3
IT0
TCON.0
IT1
TCON.2
P3.2/
INT0
P3.3/
INT1
EXEN2
T2CON.3
P1.1/
T2EX
Timer 2 Overflow
Timer 0 Overflow
Timer 1 Overflow
: Low level triggered
: Falling edge triggered
Low
Priority
High
Priority
UART



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