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AT89S52 Datasheet(PDF) 14 Page - ATMEL Corporation

Part # AT89S52
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89S52 Datasheet(HTML) 14 Page - ATMEL Corporation

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14
1919D–MICRO–6/08
AT89S52
Figure 10-2. Timer 2 Auto Reload Mode (DCEN = 0)
Figure 10-3. Timer 2 Auto Reload Mode (DCEN = 1)
OSC
EXF2
TF2
T2EX PIN
T2 PIN
TR2
EXEN2
C/T2 = 0
C/T2 = 1
CONTR OL
RELO AD
CONTROL
TRANSITION
DETECTOR
TIMER 2
INTERRUPT
÷12
RCAP2L
RCAP2H
TH2
TL2
OVERFLOW
OSC
EXF2
TF2
T2EX PIN
COUNT
DIRECTION
1=UP
0=DOWN
T2 PIN
TR2
CONTROL
OVERFLOW
TOGGLE
TIMER 2
INTERRUPT
12
RCAP2L
RCAP2H
0FFH
0FFH
TH2
TL2
C/T2 = 0
C/T2 = 1
÷
(DOWN COUNTING RELOAD VALUE)
(UP COUNTING RELOAD VALUE)


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