80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
T2MOD Address = 0C9H
Reset Value = XXXX XX00B
Not Bit Addressable
Not implemented, reserved for future use.*
Timer 2 Output Enable bit.
Down Count Enable bit. When set, this allows Timer 2 to be configured as an up/down counter.
* User software should not write 1s to reserved bits. These bits may be used in future 8051 family products to invoke new features.
In that case, the reset or inactive value of the new bit will be 0, and its active value will be 1. The value read from a reserved bit is
Figure 3. Timer 2 Mode (T2MOD) Control Register
C/T2 = 0
C/T2 = 1
Figure 4. Timer 2 in Auto-Reload Mode (DCEN = 0)
2000 Jan 20