Q67121-C1061 查看數據表（PDF） - Siemens AG
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Q67121-C1061 Datasheet PDF : 43 Pages
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1996 Intermediate Version
C161
Pin Definitions and Functions (cont’d)
Symbol Pin
Input
Number Output
RSTOUT 66
O
NMI
67
I
P6.0 – 68 -
I/O
P6.3
71
I/O
68
O
69
O
70
O
71
O
P2.9 – 72 -
I/O
P2.15 78
I/O
72
I
...
...
75
I
76
I
...
...
78
I
P5.14 – 79
I
P5.15 80
I
79
I
80
I
Function
Internal Reset Indication Output. This pin is set to a low level when
the part is executing either a hardware-, a software- or a watchdog
timer reset. RSTOUT remains low until the EINIT (end of
initialization) instruction is executed.
Non-Maskable Interrupt Input. A high to low transition at this pin
causes the CPU to vector to the NMI trap routine.
When the PWRDN (power down) instruction is executed, the NMI
pin must be low in order to force the C161 to go into power down
mode. If NMI is high, when PWRDN is executed, the part will
continue to run in normal mode.
Power Down is only available on the C161K and the C161O.
If not used, pin NMI should be pulled high externally.
Port 6 is a 4-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.
The Port 6 pins also serve for alternate functions:
P6.0
CS0
Chip Select 0 Output (C161O, C161K)
P6.1
CS1
Chip Select 1 Output (C161O, C161K)
P6.2
CS2
Chip Select 2 Output (C161O)
P6.3
CS3
Chip Select 3 Output (C161O)
The C161V does not provide CS outputs.
Port 2 is a 7-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.
The following Port 2 pins also serve for alternate functions:
P2.9
EX1IN Fast External Interrupt 1 Input
...
...
...
P2.12 EX4IN Fast External Interrupt 4 Input
P2.13 EX5IN Fast External Interrupt 5 Input
...
...
...
P2.15 EX7IN Fast External Interrupt 7 Input
These ext. interrupts are only available on the C161O.
Port 5 is a 2-bit input-only port with Schmitt-Trigger
characteristics.
The pins of Port 5 also serve as timer inputs:
P5.14 T4EUD GPT1 Timer T4 Ext.Up/Down Ctrl.Input
P5.15 T2EUD GPT1 Timer T2 Ext.Up/Down Ctrl.Input
These functions are only available on the C161K and the C161O.
Semiconductor Group
6
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