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Part Name
Description
AT89C55-33JC View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT89C55-33JC
8-Bit Microcontroller with 20K Bytes Flash
Atmel Corporation
AT89C55-33JC Datasheet PDF : 24 Pages
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Figure 3.
Timer 2 Auto Reload Mode (DCEN = 1)
(DOWN COUNTING RELOAD VALUE)
0FFH 0FFH
AT89C55
TOGGLE
EXF2
OSC
÷
12
T2 PIN
C/T2 = 0
C/T2 = 1
TH2
CONTROL
TR2
OVERFLOW
TL2
RCAP2H RCAP2L
(UP COUNTING RELOAD VALUE)
TF2
TIMER 2
INTERRUPT
COUNT
DIRECTION
1=UP
0=DOWN
T2EX PIN
Figure 4.
Timer 2 in Baud Rate Generator Mode
4-177
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