MPC89x53AF datasheet(16/38 Pages) MEGAWIN

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OSC/12

T0 or T1 pin

(Sampled)

TLx [7:0]

TFx

Interrupt

Mode 2

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.

Mode 3

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).

LogicalOR

(RCLK, TCLK)

CP/RL2

TR2

DCEN

Mode

OFF

Baud-Rate Generation

Capture

Auto-Reload Up-only

Auto-Reload Up/Down

Timer2 Mode Table

OSC/12

Sampled T0 pin

GATE

/INT0

TR0

TL0 [7:0]

TF0

Interrupt

XTAL2

TH0 [7:0]

TF1

Interrupt

TR1

C//T

GATE

/INTx

TRx

C//T

Reload

THx [7:0]

MPC89x53A Data Sheet

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