mpc89x53a Megawin Technology, mpc89x53a Datasheet - Page 15

• Manufacturer Part Number: mpc89x53a
• Description: 8-bit Micro-controller
• Manufacturer: Megawin Technology

TF2: Timer2 overflow flag. It will be set by a Timer2 overflow and must be cleared by software.
EXF2: Timer2 external flag. It will be set when either a capture or reload is caused by a negative transition
TF0: =Timer0 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when the
TCLK: When set causes the serial port to use Timer2 overflow pulse for its transmit clock in mode 1 and
EXEN2: Timer-2 external enable flag. When set, allows a capture or reload to occur. As a result of a
IE1: =Interrupt 1 Edge flag. Set by hardware when external interrupt edge detected. Cleared when
T2OE: Timer 2 Output Enable bit. It enables Timer2 overflow rate to toggle P1.0.
DCEN: Down Count Enable bit. When set, this allows Timer2 to be configured as a down counter.
SFR: TCON
TF1: =Timer1 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when the
TR1: =Timer1 run control bit. Set/Cleared by software.
TR0: =Timer1 run control bit. Set/Cleared by software.
IT1: =Interrupt 1 type control bit. Set/Cleared by software to specified falling edge/low level triggered
IE0: =Interrupt 0 Edge flag. Set by hardware when external interrupt edge detected. Cleared when
IT0: =Interrupt 0 type control bit. Set/Cleared by software to specified falling edge/low level triggered
SFR: T2MOD
SFR: T2CON
RCLK: When set causes the serial port to use Timer2 overflow pulse for its receive clock in mode and
TR2: Start/Stop control for Timer2.
MEGAWIN
Bit-7
Bit-7
Bit-7
TF1
TF2
TF2 will not be set when either TCLK or RCLK =1.
processor vectors to the interrupt routine, or clearing the bit in software.
interrupt processed.
interrupt.
interrupt processed.
interrupt.
processor vectors to the interrupt routine, or clearing the bit in software.
on pin T2EX and EXEN2=1. When Timer2 interrupt is enabled, EXF2=1 will cause the CPU to
vector to the timer2 interrupt routine. EXF2 must be cleared by software. EXF2 does not cause an
interrupt in Auto-Reload Up-Down mode (ARUD).
mode 3. RCLK=0 causes Timer1 overflow pulse to be used.
mode 3. RCLK=0 causes Timer1 overflow pulse to be used.
negative transition on T2EX if Timer2 is not being used to clock the serial port.
EXEN2=0 causes Timer2 to ignore events at T2EX.
EXF2
Bit-6
Bit-6
Bit-6
TR1
RCLK
Bit-5
Bit-5
Bit-5
TF0
TCLK
Bit-4
Bit-4
Bit-4
TR0
MPC89x53A Data Sheet
EXEN2
Bit-3
Bit-3
Bit-3
IE1
Bit-2
Bit-2
Bit-2
TR2
IT1
T2OE
C//T2
Bit-1
Bit-1
Bit-1
IE0
CP/RL2
DCEN
Bit-0
Bit-0
Bit-0
IT0
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