W79E217A Datasheet, PDF (36/207 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E217A Data Sheet
BIT NAME
7-4 P4xINV
3-
2 PWDNH
1 RMWFP
0 PUP0
FUNCTION
The Active Polarity of P4.x when it is set as a chip-select strobe output. High =
Active High. Low = Active Low. Note: x = 3,2,1,0.
Reserved.
Set PWDNH to logic 1 then ALE and PSEN will keep high state, clear this bit to
logic 0 then ALE and PSEN will output low during power down mode.
Control Read Path of Instruction “Read-Modify-Write”. When this bit is set, the
read path of executing “read-modify-write” instruction is from port pin otherwise
from SFR.
Enable Port 0 weak pull up.
CAPTURE CONTROL 0 REGISTER
Bit:
7
6
5
CCT2.1 CCT2.0 CCT1.1
4
CCT1.0
3
CCT0.1
2
CCT0.0
1
CCLD1
0
CCLD0
Mnemonic: CAPCON0
BIT NAME
7-6 CCT2.1-0
5-4 CCT1.1-0
3-2 CCT0.1-0
1-0 CCLD.1-0
FUNCTION
Capture 2 edge select.
CCT2.1 CCT2.0
Description
0
0 Rising edge trigger
0
1 Falling edge trigger
1
0 Rising or falling edge trigger
1
1 Reserved.
Capture 1 edge select.
CCT1.1 CCT1.0
Description
0
0 Rising edge trigger
0
1 Falling edge trigger
1
0 Rising or falling edge trigger
1
1 Reserved.
Capture 0 edge select.
CCT0.1 CCT0.0
Description
0
0 Rising edge trigger
0
1 Falling edge trigger
1
0 Rising or falling edge trigger
1
1 Reserved.
Reload trigger select.
CCLD1 CCLD0
Description
0
0 Timer 3 overflow (default)
0
1 Reload by capture 0 block
1
0 Reload by capture 1 block
1
1 Reload by capture 2 block
Address: A3h
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Publication Release Date: December 14, 2007
Revision A3.0