W77C32 Datasheet, PDF (24/78 Pages) Winbond – 8 BIT MICROCONTROLLER

W77C32/W77C032A
DCEN:
Down Count Enable: This bit, in conjunction with the T2EX pin, controls the direction that
timer 2 counts in 16-bit auto-reload mode.
7.2.1 Timer 2 Capture LSB
Bit:
7
6
5
RCAP2L.7 RCAP2L.6 RCAP2L.5
4
RCAP2L.4
3
RCAP2L.3
2
RCAP2L.2
1
RCAP2L.1
0
RCAP2L.0
Mnemonic: RCAP2L
Address: Cah
RCAP2L: 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
RCAP2H: This register is used to capture the TH2 value when a timer 2 is configured in capture mode.
RCAP2H is also used as the MSB of a 16-bit reload value when timer 2 is configured in auto-
reload mode.
Timer 2 LSB
Bit:
7
6
5
4
3
2
1
0
TL2.7 TL2.6 TL2.5 TL2.4 TL2.3 TL2.2 TL2.1 TL2.0
Mnemonic: TL2
Address: CCh
TL2: Timer 2 LSB
Timer 2 MSB
Bit:
7
6
5
4
3
2
1
0
TH2.7 TH2.6 TH2.5 TH2.4 TH2.3 TH2.2 TH2.1 TH2.0
Mnemonic: TH2
Address: CDh
TH2: Timer 2 MSB
Program Status Word
Bit:
7
6
5
4
3
2
1
0
CY
AC
F0 RS1 RS0 OV
F1
P
CY:
AC:
F0:
RS.1-0:
Mnemonic: PSW
Address: D0h
Carry flag: Set for an arithmetic operation which results in a carry being generated from
the ALU. It is also used as the accumulator for the bit operations.
Auxiliary carry: Set when the previous operation resulted in a carry from the high order
nibble.
User flag 0: General purpose flag that can be set or cleared by the user.
Register bank select bits:
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