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EM6812F2TP24B Datasheet(PDF) 56 Page - EM Microelectronic - MARIN SA

Part # EM6812F2TP24B
Description  Ultra Low Power 8-bit FLASH Microcontroller
PDF  81 Pages
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Manufacturer  EMMICRO [EM Microelectronic - MARIN SA]
Direct Link  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

EM6812F2TP24B Datasheet(HTML) 56 Page - EM Microelectronic - MARIN SA

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EM6812
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© 2005, EM Microelectronic-Marin SA
56
www.emmicroelectronic.com
13.2.3.3 External Signal Pulse Condition
The Counter function gets activated by the first positive edge of the selected input signal, the following positive edge will
stop the counter. In Zero-Stop mode it will stop as soon as the counter reaches 0.
The internal Pulse Start recognition signal is first synchronized with the negative edge counter clock. The positive edge of
this synchronized signal will enable the timer start. The basic restart conditions as described in 13.2.1and 13.2.2 apply.
The pulse start recognition signal is set by the first positive edge of the external start condition and reset by either the
following positive edge of the input or it will also be reset when the counter value reaches 0.
Figure 32. External start: Pulse condition, Auto-reload mode.
Figure 33. External start: Pulse condition, Zero-Stop mode
.
ClkIn
Ext. Start (Pulse)
TimXLoad
TimXStatus
XX
XX
03
03
02
01
00
03
02
01
00
03
02
Internal(Start)
synchronized
Pulse Start
recognition
Timer Start
ClkIn
Ext. Start (Pulse)
TimXLoad
TimXStatus
XX
XX
03
03
02
01
00
Internal(Start)
synchronized
Pulse Start
recognition
03
02
01
Timer Start



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