W79E217A Datasheet, PDF (51/207 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E217A Data Sheet
TIMER 2 MODE CONTROL
Bit:
7
6
5
4
3
2
1
0
HC5
HC4
HC3
HC2
T2CR
-
-
DCEN
Mnemonic: T2MOD
Address: C9h
BIT NAME
FUNCTION
7
HC5
Hardware clears INT5 flag. Setting this bit allows the flag of External Interrupt 5 to
be automatically cleared by hardware while entering the interrupt service routine.
6
HC4
Hardware clears INT4 flag. Setting this bit allows the flag of External Interrupt 4 to
be automatically cleared by hardware while entering the interrupt service routine.
5
HC3
Hardware clears INT3 flag. Setting this bit allows the flag of External Interrupt 3 to
be automatically cleared by hardware while entering the interrupt service routine.
4
HC2
Hardware clears INT2 flag. Setting this bit allows the flag of External Interrupt 2 to
be automatically cleared by hardware while entering the interrupt service routine.
Timer 2 Capture Reset. In the Timer 2 Capture Mode this bit enables/disables
3 T2CR hardware automatically reset timer 2 while the value in TL2 and TH2 have been
transferred into the capture register.
2-1 -
Reserved.
0
DCEN
Down Count Enable. This bit, in conjunction with the T2EX pin, controls the up/down
direction that timer 2 counts in 16-bit auto-reload mode.
TIMER 2 CAPTURE LSB
Bit:
7
6
5
4
3
2
1
0
RCAP2L.7 RCAP2L.6 RCAP2L.5 RCAP2L.4 RCAP2L.3 RCAP2L.2 RCAP2L.1 RCAP2L.0
Mnemonic: RCAP2L
Address: CAh
BIT NAME
FUNCTION
7-0 RCAP2L
Timer 2 Capture LSB: This register is used to capture the TL2 value when a
timer 2 is configured in capture mode. RCAP2L is also used as the LSB of a 16
bit reload value when timer 2 is configured in auto reload mode.
TIMER 2 CAPTURE MSB
Bit:
7
6
5
4
3
2
1
0
RCAP2H.7 RCAP2H.6 RCAP2H.5 RCAP2H.4 RCAP2H.3 RCAP2H.2 RCAP2H.1 RCAP2H.0
Mnemonic: RCAP2H
Address: CBh
BIT NAME
7-0 RCAP2H
FUNCTION
Timer 2 Capture HSB: This register is used to capture the TH2 value when a
timer 2 is configured in capture mode. RCAP2H is also used as the HSB of a 16
bit reload value when timer 2 is configured in auto reload mode.
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Publication Release Date: December 14, 2007
Revision A3.0