EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 149

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

Figure 27. Example: PRT CONTINUOUS Mode Operation
PS019209-0504
TMR3_CTL Write
(Timer Enable)
System Clock
Clock Enable
T3 Count
Interrupt
Request
Continuous Mode
In CONTINUOUS mode, when the end-of-count value,
timer automatically reloads the 16-bit start value from the Timer Reload registers,
TMRx_RR_H and TMRx_RR_L. Downcounting continues on the next clock edge
and the timer continues to count until disabled. An example of the timer operating
in CONTINUOUS mode is illustrated in Figure 27. Timer register information is
indicated in Table 51.
Table 51. Example : PRT CONTINUOUS Mode Parameters
Timer Interrupts
The terminal count flag, TMRx_IIR[EOC], is set to 1 whenever the timer reaches
0000h
the start value in CONTINUOUS mode. The terminal count flag is only set when
the timer reaches
Parameter
Timer Enable
Reload
Prescaler Divider = 4
CONTINUOUS Mode
End of Count Interrupt Enable
Timer Reload Value
, its end-of-count value in SINGLE PASS mode, or when the timer reloads
X
4
0000h
(or reloads) from
P R E L I M I N A R Y
3
Control Register(s)
TMR
TMR
TMR
TMR
TMR
{TMR
2
x
x
x
x
x
x
_CTL[TIM_EN]
_CTL[RLD]
_CTL[CLK_DIV]
_CTL[TIM_CONT]
_IER[IRQ_EOC_EN]
_RR_H, TMR
0001h
1
. The timer interrupt flag is not set
4
x
_RR_L}
0000h
Programmable Reload Timers
3
Product Specification
, is reached, the
Value
1
1
00b
1
1
0004h
2
eZ80F91 MCU
1
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