at75c220 ATMEL Corporation, at75c220 Datasheet - Page 113
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at75c220
Manufacturer Part Number
at75c220
Description
Smart Internet Appliance Processor Siap
Manufacturer
ATMEL Corporation
Datasheet
1.AT75C220.pdf
(144 pages)
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EEVTEDG: External Event Edge Selection
EEVTEDG
EEVT: External Event Selection
0
0
1
1
ENETRG: External Event Trigger Enable
CPCTRG: RC Compare Trigger Enable
WAVE
ACPA: RA Compare Effect on TIOA
ACPC: RC Compare Effect on TIOA
0
0
1
1
0
0
1
1
0
0
1
1
0 = The external event has no effect on the counter and its clock. In this case, the selected external event only controls
the TIOA output.
1 = The external event resets the counter and starts the counter clock.
0 = RC Compare has no effect on the counter and its clock.
1 = RC Compare resets the counter and starts the counter clock.
0 = Waveform mode is disabled (Capture mode is enabled).
1 = Waveform mode is enabled.
EEVT
ACPC
ACPA
1. If TIOB is chosen as the external event signal, it is configured as an input and no longer generates waveforms.
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Signal Selected as
External Event
TIOB
XC0
XC1
XC2
Effect
None
Set
Clear
Toggle
Effect
None
Set
Clear
Toggle
Edge
None
Rising edge
Falling edge
Each edge
TIOB
Direction
Input
Output
Output
Output
(1)
113
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