IC80C32 Datasheet, PDF (14/48 Pages) Integrated Circuit Solution Inc – CMOS SINGLE CHIP 8-BIT MICROCONTROLLER

IC80C52
IC80C32
T2CON:
Timer/Counter 2 Control Register. Bit Addressable.
765
4
3
21
0
TF2 EXF2 RCLK TCLK EXEN2 TR2 C/T2 CP/RL2
Register Description:
TF2 T2CON.7 Timer 2 overflow flag set by hardware
and cleared by software. TF2 cannot
be set when either RCLK = 1 or
TCLK = 1.
EXF2 T2CON.6 Timer 2 external flag set when either a
capture or reload is caused by a
negative transition on T2EX, and
EXEN2 = 1. When Timer 2 interrupt is
enabled, EXF2 = 1 causes the CPU to
vector to the Timer 2 interrupt routine.
EXF2 must be cleared by software.
RCLK T2CON.5 Receive clock flag. When set, causes
the Serial Port to use Timer 2 overflow
pulses for its receive clock in modes 1
and 3. RCLK = 0 causes Timer 1
overflow to be used for the receive
clock.
TLCK T2CON.4 Transmit clock flag. When set, causes
the Serial Port to use Timer 2 overflow
pulses for its transmit clock in modes 1
and 3. TCLK = 0 causes Timer 1
overflows to be used for the transmit
clock.
EXEN2
T2CON.3 Timer 2 external enable flag.
When set, allows a capture or reload to
occur as a result of negative transition
on T2EX if Timer 2 is not being used to
clock the Serial Port, EXEN2 = 0 causes
Timer 2 to ignore events at T2EX.
TR2 T2CON.2 Software START/STOP control for
Timer 2. A logic 1 starts the Timer.
C/T2 T2CON.1 T i m e r o r C o u n t e r s e l e c t .
0 = Internal Timer. 1 = External Event
Counter (triggered by falling edge).
CP/RL2
T2CON.0 Capture/Reload flag.
When set, captures occur on negative
transitions at T2EX if EXEN2 = 1. When
cleared, auto-reloads occur either with
Timer 2 overflows or negative
transitions at T2EX when EXEN2 = 1.
When either RCLK = 1 or TCLK = 1, this
bit is ignored and the Timer is forced to
auto-reload on Timer 2 overflow.
Note:
1. Timer 2 Operating Modes
RCLK + TCLK CP/RL2 TR2 MODE
0
0
1 16-Bit Auto-Reload
0
1
1 16-Bit Capture
1
X
1 Baud Rate Generator
X
X
0 (Off)
14
Integrated Circuit Solution Inc.
MC002-0B