AT89C55WD-33JC(2002) Ver la hoja de datos (PDF) - Atmel Corporation

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fabricante

AT89C55WD-33JC
(Rev.:2002)

8-bit Microcontroller with 20K Bytes Flash

Atmel Corporation 

AT89C55WD

Figure 6. Timer 2 Auto Reload Mode (DCEN = 0)

OSC

÷12

C/T2 = 0

T2 PIN

C/T2 = 1

CONTR OL

TR2

RELO AD

T2EX PIN

TRANSITION

DETECTOR

CONTROL

EXEN2

TH2

TL2

OVERFLOW

RCAP2H RCAP2L

TF2

EXF2

TIMER 2

INTERRUPT

Table 6. T2MOD – Timer 2 Mode Control Register

T2MOD Address = 0C9H

Reset Value = XXXX XX00B

Not Bit Addressable

–

–

–

–

–

–

T2OE

DCEN

Bit

7

6

5

4

3

2

1

0

Symbol

–

T2OE

DCEN

Function

Not implemented, reserved for future

Timer 2 Output Enable bit

When set, this bit allows Timer 2 to be configured as an up/down counter

13

1921B–MICRO–09/02

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