C8051F340 Datasheet, PDF (248/282 Pages) List of Unclassifed Manufacturers – Full Speed USB Flash MCU Family

C8051F340/1/2/3/4/5/6/7
SFR Definition 21.2. TMOD: Timer Mode
R/W
GATE1
Bit7
R/W
C/T1
Bit6
R/W
T1M1
Bit5
R/W
T1M0
Bit4
R/W
GATE0
Bit3
R/W
C/T0
Bit2
R/W
T0M1
Bit1
R/W
T0M0
Bit0
Reset Value
00000000
SFR Address:
0x89
Bit7:
Bit6:
Bits5–4:
GATE1: Timer 1 Gate Control.
0: Timer 1 enabled when TR1 = 1 irrespective of /INT1 logic level.
1: Timer 1 enabled only when TR1 = 1 AND /INT1 is active as defined by bit IN1PL in regis-
ter INT01CF (see SFR Definition 9.13).
C/T1: Counter/Timer 1 Select.
0: Timer Function: Timer 1 incremented by clock defined by T1M bit (CKCON.4).
1: Counter Function: Timer 1 incremented by high-to-low transitions on external input pin
(T1).
T1M1–T1M0: Timer 1 Mode Select.
These bits select the Timer 1 operation mode.
T1M1
0
0
1
1
T1M0
0
1
0
1
Mode
Mode 0: 13-bit counter/timer
Mode 1: 16-bit counter/timer
Mode 2: 8-bit counter/timer with
auto-reload
Mode 3: Timer 1 inactive
Bit3:
Bit2:
Bits1–0:
GATE0: Timer 0 Gate Control.
0: Timer 0 enabled when TR0 = 1 irrespective of /INT0 logic level.
1: Timer 0 enabled only when TR0 = 1 AND /INT0 is active as defined by bit IN0PL in regis-
ter INT01CF (see SFR Definition 9.13).
C/T0: Counter/Timer Select.
0: Timer Function: Timer 0 incremented by clock defined by T0M bit (CKCON.3).
1: Counter Function: Timer 0 incremented by high-to-low transitions on external input pin
(T0).
T0M1–T0M0: Timer 0 Mode Select.
These bits select the Timer 0 operation mode.
T0M1
0
0
1
1
T0M0
0
1
0
1
Mode
Mode 0: 13-bit counter/timer
Mode 1: 16-bit counter/timer
Mode 2: 8-bit counter/timer with
auto-reload
Mode 3: Two 8-bit counter/timers
248
Rev. 0.5