Rainbow-electronics T89C51AC2 Bedienungsanleitung PDF herunterladen (Seite 63)

63

T89C51AC2

Rev. B – 19-Dec-01

Table 27. T2MOD Register

T2MOD (S:C9h)

Timer 2 Mode Control Register

Reset Value = XXXX XX00b

Not bit addressable

Table 28. TH2 Register

TH2 (S:CDh)

Timer 2 High Byte Register

Reset Value = 0000 0000b

Not bit addressable

76543210

------T2OEDCEN

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.

1T2OE

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.

76543210

--------

Bit

Number

Bit

Mnemonic Description

7-0 HighByteofTimer2.

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 109 110

T89C51AC2 1

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