Rainbow-electronics T89C51CC02 Instrukcja Użytkownika Pobierz pdf (Strona 62)

62 Rev.A - May 17, 2001

Preliminary

T89C51CC02

T2MOD (S:C9h)

Timer 2 Mode Control Register

Reset Value = XXXX XX00b

Not bit addressable

Figure 48. T2MOD Register

TH2 (S:CDh)

Timer 2 High Byte Register

Reset Value = 0000 0000b

Not bit addressable

Figure 49. TH2 Register

7 6 5 4 3 2 1 0

- - - - - - T2OE DCEN

Bit Number Bit Mnemonic Description

7-

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.

1 T2OE

Timer 2 Output Enable bit

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

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

0 DCEN

Down Counter Enable bit

Clear to disable timer 2 as up/down counter.

Set to enable timer 2 as up/down counter.

7 6 5 4 3 2 1 0

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Bit Number Bit Mnemonic Description

7-0 High Byte of Timer 2.

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 136 137

T89C51CC02 1

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