Datasheet

30
AT89C51RB2/RC2
4180D–8051–06/05
Table 21. T2MOD Register
T2MOD – Timer 2 Mode Control Register (C9h)
Reset Value = XXXX XX00b
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 Bitt
Cleared to program P1.0/T2 as clock input or I/O port.
Set to program P1.0/T2 as clock output.
0DCEN
Down Counter Enable Bit
Cleared to disable Timer 2 as up/down counter.
Set to enable Timer 2 as up/down counter.