MS51
Nov. 28, 2019
Page
48
of 491
Rev 1.00
MS51
32K
SE
RIES
TE
CHNICAL RE
F
EREN
CE MA
N
UAL
All SFR Description
6.1.7.4
Note:
1. All SFRs reset value show as following means U-unchanged; C-initialized by CONFIG; X- base on
real chip status.
Pn
– Port (Bit-addressable)
Register
SFR Address
Reset Value
P0
80H, All pages, Bit-addressable
1111_1111 b
P1
90H, All pages, Bit-addressable
1111_1111 b
P2
A0H, All pages, Bit-addressable
0011_1111 b
P3
B0H, All pages, Bit-addressable
1111_1111 b
7
6
5
4
3
2
1
0
Pn.7
Pn.6
Pn.5
Pn.4
Pn.3
Pn.2
Pn.1
Pn.0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
Name
Description
7:0
Pn[7:0]
Port n
Port n is an maximum 8-bit general purpose I/O port.