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ST10F280 bảng dữ liệu(PDF) 84 Page - STMicroelectronics

tên linh kiện ST10F280
Giải thích chi tiết về linh kiện  16-BIT MCU WITH MAC UNIT, 512K BYTE FLASH MEMORY AND 18K BYTE RAM
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12.5 - Port 3
If this 15-bit port is used for general purpose I/O, the direction of each line can be configured by the cor-
responding direction register DP3. Most port lines can be switched into push/pull or open drain mode by
the open drain control register ODP3 (pins P3.15, P3.14 and P3.12 do not support open drain mode).
Due to pin limitations register bit P3.14 is not connected to an output pin.
P3 (FFC4h / E2h)
SFR
Reset Value: 0000h
DP3 (FFC6h / E3h)
SFR
Reset Value: 0000h
ODP3 (F1C6h / E3h)
SFR
Reset Value: 0000h
15
14
13
12
11
10
9876543210
P3.15
-
P3.13 P3.12 P3.11 P3.10
P3.9
P3.8
P3.7
P3.6
P3.5
P3.4
P3.3
P3.2
P3.1
P3.0
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Bit
Function
P3.y
Port data register P3 bit y
15
14
13
12
11
10
9876543210
DP3
.15
-
DP3
.13
DP3
.12
DP3
.11
DP3
.10
DP3.9 DP3.8 DP3.7 DP3.6 DP3.5 DP3.4 DP3.3 DP3.2 DP3.1 DP3.0
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Bit
Function
DP3.y
Port direction register DP3 bit y
DP3.y = 0: Port line P3.y is an input (high-impedance)
DP3.y = 1: Port line P3.y is an output
15
14
13
12
11
10
9876543210
-
-
ODP3
.13
-
ODP3
.11
ODP3
.10
ODP3
.9
ODP3
.8
ODP3
.7
ODP3
.6
ODP3
.5
ODP3
.4
ODP3
.3
ODP3
.2
ODP3
.1
ODP3
.0
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Bit
Function
ODP3.y
Port 3 Open Drain control register bit y
ODP3.y = 0: Port line P3.y output driver in push-pull mode
ODP3.y = 1: Port line P3.y output driver in open drain mode



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