C167CS-4R データシートの表示（PDF） - Infineon Technologies
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C167CS-4R Datasheet PDF : 81 Pages
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C167CS-4R
C167CS-L
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin Input Function
Num. Outp.
P4
IO
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. The Port 4 outputs can be configured as
push/pull or open drain drivers. The input threshold of Port 4
is selectable (TTL or special).
Port 4 can be used to output the segment address lines and
for serial interface lines:1)
P4.0 85
O
A16
Least Significant Segment Address Line
P4.1 86
O
A17
Segment Address Line
P4.2 87
O
A18
Segment Address Line
P4.3 88
O
A19
Segment Address Line
P4.4 89
O
A20
Segment Address Line,
I
CAN2_RxD CAN 2 Receive Data Input
P4.5 90
O
A21
Segment Address Line,
I
CAN1_RxD CAN 1 Receive Data Input
P4.6 91
O
A22
Segment Address Line,
O
CAN1_TxD CAN 1 Transmit Data Output,
O
CAN2_TxD CAN 2 Transmit Data Output
P4.7 92
O
A23
Most Significant Segment Address Line,
I
CAN1_RxD CAN 1 Receive Data Input,
O
CAN2_TxD CAN 2 Transmit Data Output,
I
CAN2_RxD CAN 2 Receive Data Input
RD
95
O
External Memory Read Strobe. RD is activated for every
external instruction or data read access.
WR/ 96
O
WRL
External Memory Write Strobe. In WR-mode this pin is
activated for every external data write access. In WRL-mode
this pin is activated for low byte data write accesses on a
16-bit bus, and for every data write access on an 8-bit bus.
See WRCFG in register SYSCON for mode selection.
READY 97
I
Ready Input. When the Ready function is enabled, a high
level at this pin during an external memory access will force
the insertion of memory cycle time waitstates until the pin
returns to a low level.
An internal pullup device will hold this pin high when nothing
is driving it.
Data Sheet
9
V2.2, 2001-08
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