EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 151
EZ80F91MCU
Manufacturer Part Number
EZ80F91MCU
Description
eZ80Acclaim-TM Flash Microcontrollers
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.EZ80F91MCU.pdf
(396 pages)
- Current page: 151 of 396
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Figure 28. Example: PRT Timer Output Operation
PS019209-0504
TMR3_CTL Write
(Timer Enable)
System Clock
Clock Enable
Timer Out
Timer Out
T3 Count
(internal)
(at pad)
Table 52. Example: PRT Timer Out Parameters
Break Point Halting
When the eZ80F91 device is running in DEBUG mode, encountering a break
point causes all CPU functions to halt. By default, however, the timers keep run-
ning. This instance can make debugging timer-related firmware much more diffi-
cult. Therefore, the control register contains a BRK_STP bit. Setting this bit
causes the count value to be held during debug break points.
Parameter
Timer Enable
Reload
Prescaler Divider = 4
CONTINUOUS Mode
Timer Reload Value
0
4
3
Control Register(s)
TMR
TMR
TMR
TMR
{TMR
P R E L I M I N A R Y
x
x
x
x
x
_CTL[TIM_EN]
_CTL[RLD]
_CTL[CLK_DIV]
_CTL[TIM_CONT]
_RR_H, TMRx_RR_L}
2
1
4
3
Programmable Reload Timers
Value
1
1
00b
1
0003h
Product Specification
2
eZ80F91 MCU
1
132
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