參數(shù)資料
型號: SAK-C164CI-8EMCB
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 16-BIT, OTPROM, 20 MHz, MICROCONTROLLER, PQFP80
封裝: 0.65 MM PITCH, METRIC, PLASTIC, QFP-80
文件頁數(shù): 4/80頁
文件大?。?/td> 1337K
代理商: SAK-C164CI-8EMCB
C164CI/SI
C164CL/SL
Data Sheet
7
V2.0, 2001-05
EA/
VPP 28
I
External Access Enable pin.
A low level at this pin during and after Reset forces the
C164CI to latch the configuration from PORT0 and pin RD,
and to begin instruction execution out of external memory.
A high level forces the C164CI 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’.
Note: This pin also accepts the programming voltage for the
OTP derivatives.
PORT0
P0L.0-7
P0H.0-7
29-
36
37-39,
42-46
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
P0H.0 – P0H.7:
I/O
D8 – D15
Multiplexed bus modes:
Data Path Width:
8-bit
16-bit
P0L.0 – P0L.7:
AD0 – AD7
P0H.0 – P0H.7:
A8 – A15
AD8 – AD15
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
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