Hardware manual

Common Features Description
Atmel 8051 Microcontrollers Hardware Manual 2-43
4316A–8051–01/04
Table 2-12. T2MOD Register - T2MOD (S:C9h)
Timer 2 Mode Control Register
Reset Value = XXXX XX00b
Not bit addressable
Table 2-13. 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 High Byte of Timer 2.