C8051F581-IMR Silicon Labs, C8051F581-IMR Datasheet - Page 201

• Manufacturer Part Number: C8051F581-IMR
• Description: 8-bit Microcontrollers - MCU 50MIPS 128kB 8kB SPI
• Manufacturer: Silicon Labs

Specifications of C8051F581-IMR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

SFR Definition 20.11. P3MASK: Port 3 Mask Register
SFR Address = 0xAF; SFR Page = 0x00
SFR Definition 20.12. P3MAT: Port 3 Match Register
SFR Address = 0xAE; SFR Page = 0x00
Note: P3.1–P3.6 are only available on the 48-pin and 40-pin packages
Note: P3.1–P3.6 are only available on the 48-pin and 40-pin packages
Name
Reset
Name
Reset
Bit
7:0
Bit
7:0
Type
Type
Bit
Bit
P3MASK[7:0]
P3MAT[7:0]
Name
Name
7
0
7
1
Port 1 Mask Value.
Selects P3 pins to be compared to the corresponding bits in P3MAT.
0: P3.n pin logic value is ignored and cannot cause a Port Mismatch event.
1: P3.n pin logic value is compared to P3MAT.n.
Port 3 Match Value.
Match comparison value used on Port 3 for bits in P3MAT which are set to 1.
0: P3.n pin logic value is compared with logic LOW.
1: P3.n pin logic value is compared with logic HIGH.
6
0
6
1
5
0
5
1
Rev. 1.2
P3MASK[7:0]
4
0
4
1
P3MAT[7:0]
R/W
R/W
Function
Function
3
0
3
1
C8051F58x/F59x
2
0
2
1
1
0
1
1
0
0
0
1
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