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C167CS-L датащи(PDF) 14 Page - Infineon Technologies AG

номер детали C167CS-L
подробное описание детали  16-Bit Single-Chip Microcontroller
PDF  81 Pages
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производитель  INFINEON [Infineon Technologies AG]
домашняя страница  http://www.infineon.com
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C167CS-L датащи(HTML) 14 Page - Infineon Technologies AG

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C167CS-4R
C167CS-L
Data Sheet
10
V2.2, 2001-08
ALE
98
O
Address Latch Enable Output. Can be used for latching the
address into external memory or an address latch in the
multiplexed bus modes.
EA
99
I
External Access Enable pin. A low level at this pin during and
after Reset forces the C167CS to begin instruction execution
out of external memory. A high level forces execution out of
the internal program memory.
“ROMless” versions must have this pin tied to ‘0’.
PORT0
P0L.0-7
P0H.0-7
100-
107
108,
111-
117
IO
PORT0 consists of the two 8-bit bidirectional I/O ports P0L
and P0H. 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, PORT0 serves as
the address (A) and address/data (AD) bus in multiplexed
bus modes and as the data (D) bus in demultiplexed bus
modes.
Demultiplexed bus modes:
Data Path Width:
8-bit
16-bit
P0L.0 – P0L.7:
D0 – D7
D0 – D7
P0H.0 – P0H.7:
I/O
D8 – D15
Multiplexed bus modes:
Data Path Width:
8-bit
16-bit
P0L.0 – P0L.7:
AD0 – AD7
AD0 – AD7
P0H.0 – P0H.7:
A8 – A15
AD8 – AD15
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin
Num.
Input
Outp.
Function



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