sak-c164ci-l16m3v Infineon Technologies Corporation, sak-c164ci-l16m3v Datasheet - Page 11
sak-c164ci-l16m3v
Manufacturer Part Number
sak-c164ci-l16m3v
Description
16-bit Single-chip Microcontroller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.SAK-C164CI-L16M3V.pdf
(75 pages)
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Preliminary
Table 2
Symbol Pin
EA
PORT0
P0L.0-7
P0H.0-7
Data Sheet
No.
28
29-
36
37-39,
42-46
Pin Definitions and Functions (cont’d)
Input
Outp.
I
IO
Function
External Access Enable pin.
A low level at this pin during and after Reset forces the
C164CI-3V to latch the configuration from PORT0 and pin
RD, and to begin instruction execution out of external
memory.
A high level forces the C164CI-3V to latch the configuration
from pins RD and ALE, and to begin instruction 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:
7
8-bit
D0 – D7
I/O
8-bit
AD0 – AD7
A8 – A15
16-bit
D0 – D7
D8 – D15
16-bit
AD0 – AD7
AD8 – AD15
C164CI-L16M3V
Low Power
V1.0, 2003-01
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