参数资料
型号: C167SR
厂商: SIEMENS AG
英文描述: 16-Bit CMOS Single-Chip Microcontroller
中文描述: 16位CMOS单芯片微控制器
文件页数: 10/66页
文件大小: 680K
代理商: C167SR
C167SR
Semiconductor Group
7
P3.0 -
P3.13,
P3.15
65 - 70,
73 - 80,
81
65
66
67
68
69
70
73
74
75
76
77
78
79
80
81
I/O
I/O
I/O
I
O
I
O
I
I
I
I
I/O
I/O
O
I/O
O
O
I/O
O
Port 3 is a 15-bit (P3.14 is missing) bidirectional I/O port. It is
bit-wise programmable for input or output via direction bits.
For a pin configured as input, the output driver is put into high-
impedance state. Port 3 outputs can be configured as push/
pull or open drain drivers. The input threshold of Port 3 is
selectable (TTL or special).
The following Port 3 pins also serve for alternate functions:
P3.0
T0IN
CAPCOM Timer T0 Count Input
P3.1
T6OUT
GPT2 Timer T6 Toggle Latch Output
P3.2
CAPIN
GPT2 Register CAPREL Capture Input
P3.3
T3OUT
GPT1 Timer T3 Toggle Latch Output
P3.4
T3EUD
GPT1 Timer T3 Ext.Up/Down Ctrl.Input
P3.5
T4IN
GPT1 Timer T4 Input for
Count/Gate/Reload/Capture
P3.6
T3IN
GPT1 Timer T3 Count/Gate Input
P3.7
T2IN
GPT1 Timer T2 Input for
Count/Gate/Reload/Capture
P3.8
MRST
SSC Master-Rec./Slave-Transmit I/O
P3.9
MTSR
SSC Master-Transmit/Slave-Rec. O/I
P3.10
T
×
D0
ASC0 Clock/Data Output (Asyn./Syn.)
P3.11
R
×
D0
ASC0 Data Input (Asyn.) or I/O (Syn.)
P3.12
BHE
Ext. Memory High Byte Enable Signal,
WRH
Ext. Memory High Byte Write Strobe
P3.13
SCLK
SSC Master Clock Outp./Slave Cl. Inp.
P3.15
CLKOUT
System Clock Output (=CPU Clock)
P4.0 -
P4.7
85 - 92
85
...
89
...
92
I/O
O
...
O
...
O
Port 4 is an 8-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For a pin
configured as input, the output driver is put into high-
impedance state.
In case of an external bus configuration, Port 4 can be used to
output the segment address lines:
P4.0
A16
Least Significant Segment Addr. Line
...
...
...
P4.4
A20
Least Significant Segment Addr. Line
..
:
:
P4.7
A23
Most Significant Segment Addr. Line
RD
95
O
External Memory Read Strobe. RD is activated for every
external instruction or data read access.
Pin Definitions and Functions
(cont’d)
Symbol
Pin
Number
Input (I)
Output (O)
Function
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