MPC89L515A Megawin Technology, MPC89L515A Datasheet - Page 16

• Manufacturer Part Number: MPC89L515A
• Description: 8-bit micro-controller
• Manufacturer: Megawin Technology

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Mode 3
Timer1 in Mode3 simply holds its count, the effect is the same as setting TR1 = 1. Timer0 in Mode 3
enables TL0 and TH0 as two separate 8-bit counters. TL0 uses the Timer0 control bits such like C/T,
GATE, TR0, INT0 and TF0. TH0 is locked into a timer function (can not be external event counter)
and take over the use of TR1, TF1 from Timer1. TH0 now controls the Timer1 interrupt.
TIMER2
Timer2 is a 16-bit timer/counter which can operate as either an event timer or an event counter as
selected by C//T2 in the special function register T2CON. Timer2 has four operation modes:
Capture Mode (CP), Auto-Reload Up/Down Mode (ARUD), Auto-Reload Up-Only mode (ARUO)
and Baud-Rate Generator Mode (BRG).
Timer2 is also can be configured as a periodical signal generator.
The MPC89x515A is able to generate a programmable clock output on P1.0. When T2OE bit is set
16
Sampled T0 pin
T0 or T1 pin
(Sampled)
Timer2 Mode Table
OSC/12
GATE
GATE
/INT0
/INTx
OSC/12
(RCLK, TCLK)
C//T
Logical OR
C//T
x
1
0
0
0
XTAL2
TR1
0
1
0
1
TR0
TRx
CP/RL2
1
0
0
x
x
MPC89x515A Data Sheet
TR2
1
0
1
0
0
1
1
1
1
0
1
DCEN
TLx [7:0]
THx [7:0]
TH0 [7:0]
x
0
0
0
1
TL0 [7:0]
OFF
Baud-Rate Generation
Capture
Auto-Reload Up-only
Auto-Reload Up/Down
Reload
TF1
TFx
Mode
TF0
MEGAWIN
Interrupt
Interrupt
Mode 3
Mode 2
Interrupt