參數(shù)資料
型號: DS80CH11
英文描述: System Energy Manager
中文描述: 系統(tǒng)能量管理器
文件頁數(shù): 10/88頁
文件大小: 598K
代理商: DS80CH11
DS80CH11
011200 10/88
PIN
SYMBOL
DESCRIPTION
87
88
89
90
91
92
93
94
P1.0 (T2)
P1.1 (T2EX)
P1.2 SCL1
P1.3 SDA1
P1.4 SCL2
P1.5 SDA2
P1.6
P1.7
Port 1/ (Alternate Functions):
– I/O. Port 1 provides eight lines which can be individu-
ally selected as bi–directional I/O port pins or as the alternate functions listed below:
Alternate
Function
T2
T2EX
SCL1
SDA1
SCL2
SDA2
(None)
(None)
Port
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
Description
External I/O for Timer/Counter 2
Timer/Counter 2 Capture/Reload Trigger
2–Wire Serial Clock 1
2–Wire Serial Data 1
2–Wire Serial Clock 2
2–Wire Serial Data 2
Note that P1.7 – P1.2 are high–drive pins which are always open–drain and must be
used with external pull–ups when used as I/O port pins. P1.1 and P1.0 have internal
pull–up resistors.
109
110
111
112
113
114
115
116
P2.0 (A8)
P2.1 (A9)
P2.2 (A10)
P2.3 (A11)
P2.4 (A12)
P2.5 (A13)
P2.6 (A14)
P2.7 (A15)
Port 2 / Address Outputs A15–8:
– I/O. Port 2 is a pseudo–bi–directional I/O port with
internal pull–up resistors. As an alternate function Port 2 can function as MSB of the
external address bus.
95
96
97
98
99
100
103
104
P3.0(RXD0)
P3.1 (TXD0)
P3.2 (INT0)
P3.3 (INT1)
P3.4 (T0)
P3.5 (T1)
P3.6 (WR)
P3.7 (RD)
Port 3 / (Alternate Functions):
– I/O. Port 3 provides eight lines each of which can
serve as psuedo–bi–directional I/O port pins or as the alternate functions as listed
below. Internal pull–up resistors are always present on these pins.
Alternate
Function
RXD0
TXD0
INT0
INT1
T0
T1
WR
RD
Port
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
Description
Serial Port 0 Input
Serial Port 0 Output
External Interrupt 0
External Interrupt 1
Timer 0 External Input
Timer 1 External Input
External Data Memory Write Strobe
External Data Memory Read Strobe
77
78
79
80
81
82
83
84
P4.0 (KSI.0)
P4.1 (KSI.1)
P4.2 (KSI.2)
P4.3 (KSI.3)
P4.4 (KSI.4)
P4.5 (KSI.5)
P4.6 (KSI.6)
P4.7 (KSI.7)
Port 4 / KSI.7–0:
– I/O / Keyboard Scan Inputs. Port 4 provides eight lines which can be
individually selected as psuedo–bi–directional I/O port pins or as an interrupt Inputs for
key scanning. Port 4 pins incorporate Schmitt inputs with pull–up resistors.
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