C8051F850-B-GM Datasheet, PDF (255/290 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

C8051F85x/86x
Register 25.2. TCON: Timer 0/1 Control
Bit
7
6
5
4
3
2
1
0
Name
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
Type
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
SFR Address: 0x88 (bit-addressable)
Table 25.4. TCON Register Bit Descriptions
Bit
Name
Function
7
TF1
Timer 1 Overflow Flag.
Set to 1 by hardware when Timer 1 overflows. This flag can be cleared by software but is
automatically cleared when the CPU vectors to the Timer 1 interrupt service routine.
6
TR1
Timer 1 Run Control.
Timer 1 is enabled by setting this bit to 1.
5
TF0
Timer 0 Overflow Flag.
Set to 1 by hardware when Timer 0 overflows. This flag can be cleared by software but is
automatically cleared when the CPU vectors to the Timer 0 interrupt service routine.
4
TR0
Timer 0 Run Control.
Timer 0 is enabled by setting this bit to 1.
3
IE1
External Interrupt 1.
This flag is set by hardware when an edge/level of type defined by IT1 is detected. It can
be cleared by software but is automatically cleared when the CPU vectors to the External
Interrupt 1 service routine in edge-triggered mode.
2
IT1
Interrupt 1 Type Select.
This bit selects whether the configured INT1 interrupt will be edge or level sensitive. INT1
is configured active low or high by the IN1PL bit in register IT01CF.
0: INT1 is level triggered.
1: INT1 is edge triggered.
1
IE0
External Interrupt 0.
This flag is set by hardware when an edge/level of type defined by IT0 is detected. It can
be cleared by software but is automatically cleared when the CPU vectors to the External
Interrupt 0 service routine in edge-triggered mode.
0
IT0
Interrupt 0 Type Select.
This bit selects whether the configured INT0 interrupt will be edge or level sensitive. INT0
is configured active low or high by the IN0PL bit in register IT01CF.
0: INT0 is level triggered.
1: INT0 is edge triggered.
262
Preliminary Rev 0.6