C8051T630 Datasheet, PDF (120/221 Pages) Silicon Laboratories – Mixed-Signal Byte-Programmable EPROM MCU

C8051T630/1/2/3/4/5
SFR Definition 20.5. P1MASK: Port 1 Mask Register
Bit
7
6
5
4
3
2
1
0
Name
P1MASK[7:0]
Type
R/W
Reset
0
0
0
0
0
0
0
0
SFR Address = 0xEE
Bit
Name
Function
7:0 P1MASK[7:0] _{Port 1 Mask Value.}
Selects P1 pins to be compared to the corresponding bits in P1MAT.
0: P1.n pin logic value is ignored and cannot cause a Port Mismatch event.
1: P1.n pin logic value is compared to P1MAT.n.
SFR Definition 20.6. P1MAT: Port 1 Match Register
Bit
7
6
5
4
3
2
1
0
Name
P1MAT[7:0]
Type
R/W
Reset
1
1
1
1
1
1
1
1
SFR Address = 0xED
Bit
Name
Function
7:0 P1MAT[7:0] _{Port 1 Match Value.}
Match comparison value used on Port 1 for bits in P1MASK which are set to 1.
0: P1.n pin logic value is compared with logic LOW.
1: P1.n pin logic value is compared with logic HIGH.
120
Rev. 1.0