P4M0 register (不可位寻址) SFR name Address P4M0 B4H name P4M0.7 P4M0.6 P4M0.5 P4M0.4 P4M0.3 P4M0.2 P4M0.1 P4M0.0
P3 register (可位寻址) SFR name Address P3 B0H bit name B7 P3.7 B6 P3.6 B5 P3.5 B4 P3.4 B3 P3.3 B2 P3.2 B1 P3.1 B0 P3.0
P2 register (可位寻址) SFR name Address P2 A0H bit name B7 P2.7 B6 P2.6 B5 P2.5 B4 P2.4 B3 P2.3 B2 P2.2 B1 P2.1 B0 P2.0
P2M1 register (不可位寻址) SFR name Address P2M1 95H bit B7 B6 B5 B4 B3 B2 B1 B0 name P2M1.7 P2M1.6 P2M1.5 P2M1.4 P2M1.3 P2M1.2 P2M1.1 P2M1.0
P1M1 register (不可位寻址) SFR name P1M1 Address 91H bit B7 B6 B5 B4 B3 B2 B1 B0 name P1M1.7 P1M1.6 P1M1.5 P1M1.4 P1M1.3 P1M1.2 P1M1.1 P1M1.0
P1M0 register (不可位寻址) SFR name Address P1M0 92H bit B7 B6 B5 B4 B3 B2 B1 B0 name P1M0.7 P1M0.6 P1M0.5 P1M0.4 P1M0.3 P1M0.2 P1M0.1 P1M0.0
B6
B5
B4
B3
B2
B1
B0
name P0M1.7 P0M1.6 P0M1.5 P0M1.4 P0M1.3 P0M1.2 P0M1.1 P0M1.0
P0M0 register (不可位寻址) SFR name P0M0 Address 94H bit B7 B6 B5 B4 B3 B2 B1 B0 name P0M0.7 P0M0.6 P0M0.5 P0M0.4 P0M0.3 P0M0.2 P0M0.1 P0M0.0
P4M1 register (不可位寻址) SFR name Address P4M1 B3H bit B7 B6 B5 B4 B3 B2 B1 B0 name P4M1.7 P4M1.6 P4M1.5 P4M1.4 P4M1.3 P4M1.2 P4M1.1 P4M1.0 bit B7 B6 B5 B4 B3 B2 B1 B0
P2M0 register (不可位寻址) SFR name Address P2M0 96H bit B7 B6 B5 B4 B3 B2 B1 B0 name P2M0.7 P2M0.6 P2M0.5 P2M0.4 P2M0.3 P2M0.2 P2M0.1 P2M0.0
P1 register (可位寻址) SFR name P1 Address 90H bit name B7 P1.7 B6 P1.6 B5 P1.5 B4 P1.4 B3 P1.3 B2 P1.2 B1 P1.1 B0 P1.0
I/O端口及相关寄存器
P5 register (可位寻址) SFR name Address P5 C8H bit name B7 B6 B5 B4 B3 P5.3 B2 P5.2 B1 P5.1 B0 P5.0
P5M1 register (不可位寻址) SFR name Address P5M1 C9H bit name bit name B7 B7 B6 B6 B5 B5 B4 B4 B3 B2 B1 B0 P5M1.3 P5M1.2 P5M1.1 P3M1.0 B3 B2 B1 B0
P5M0 register (不可位寻址) SFR name Address P5M0 CAH P5M0.3 P5M0.2 P5M0.1 P5M0.0
P4 register (可位寻址) SFR name Address P4 C0H bit name B7 P4.7 B6 P4.6 B5 P4.5 B4 P4.4 B3 P4.3 B2 P4.2 B1 P4.1 B0 P4.0
P3M1 register (不可位寻址) SFR name Address P3M1 B1H bit B7 B6 B5 B4 B3 B2 B1 B0 name P3M1.7 P3M1.6 P3M1.5 P3M1.4 P3M1.3 P3M1.2 P3M1.1 P3M1.0
P3M0 register (不可位寻址) SFR name Address P3M0 B2H bit B7 B6 B5 B4 B3 B2 B1 B0 name P3M0.7 P3M0.6 P3M0.5 P3M0.4 P3M0.3 P3M0.2 P3M0.1 P3M0.0
P0 register (可位寻址) SFR name Address P0 80H P0M1 register SFR name P0M1 Address 93H
bit name
B7 P0.7B3 P0.3
B2 P0.2
B1 P0.1
B0 P0.0
bit
B7