AT89C51RB2-RLTCM 查看數據表（PDF） - Atmel Corporation

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AT89C51RB2-RLTCM

8-bit Microcontroller with 16K/32K Bytes Flash

Atmel Corporation 

Table 21. T2MOD Register

T2MOD – Timer 2 Mode Control Register (C9h)

7

6

5

4

3

-

-

-

-

-

2

1

-

T2OE

Bit

Number

7

Bit

Mnemonic Description

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

6

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

5

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

4

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

3

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

2

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

Timer 2 Output Enable Bitt

1

T2OE Cleared to program P1.0/T2 as clock input or I/O port.

Set to program P1.0/T2 as clock output.

Down Counter Enable Bit

0

DCEN Cleared to disable Timer 2 as up/down counter.

Set to enable Timer 2 as up/down counter.

Reset Value = XXXX XX00b

Not bit addressable

0

DCEN

30 AT89C51RB2/RC2

4180E–8051–10/06

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