SAK-C167CS-4R33M Infineon Technologies AG, SAK-C167CS-4R33M Datasheet - Page 14
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SAK-C167CS-4R33M
Manufacturer Part Number
SAK-C167CS-4R33M
Description
16-Bit Single-Chip Microcontroller
Manufacturer
Infineon Technologies AG
Datasheet
1.SAK-C167CS-4R33M.pdf
(80 pages)
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Table 2
Symbol Pin
ALE
EA
PORT0
P0L.0-7
P0H.0-7
Data Sheet
Num.
98
99
100-
107
108,
111-
117
Pin Definitions and Functions (cont’d)
Input
Outp.
O
I
IO
Function
Address Latch Enable Output. Can be used for latching the
address into external memory or an address latch in the
multiplexed bus modes.
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 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:
P0L.0 – P0L.7:
P0H.0 – P0H.7:
Multiplexed bus modes:
Data Path Width:
P0L.0 – P0L.7:
P0H.0 – P0H.7:
10
8-bit
D0 – D7
I/O
8-bit
AD0 – AD7
A8 - A15
16-bit
D0 - D7
D8 - D15
16-bit
AD0 - AD7
AD8 - AD15
C167CS-4R
V2.0, 2000-06
C167CS-L
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