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ST10F269Z2QX bảng dữ liệu(PDF) 69 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  16-BIT MCU WITH MAC UNIT, 256K BYTE FLASH MEMORY AND 12K BYTE RAM
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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12.6 - Port 3
If this 15-bit port is used for general purpose I/O,
the direction of each line can be configured by the
corresponding direction register DP3. Most port
lines can be switched into push-pull or open drain
mode by the open drain control register ODP2
(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)
ESFR
Reset Value: 0000h
15
14
13
12
11
10
9
876
54
321
0
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
RW
P3.y
Port Data Register P3 Bit y
15
14
13
12
11
10
9
876
54
321
0
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
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
9
876
54
321
0
-
-
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
RW
RW
RW
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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