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EM78P341 датащи(PDF) 39 Page - ELAN Microelectronics Corp

номер детали EM78P341
подробное описание детали  8-Bit Microprocessor with OTP ROM
PDF  102 Pages
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производитель  EMC [ELAN Microelectronics Corp]
домашняя страница  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P341 датащи(HTML) 39 Page - ELAN Microelectronics Corp

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EM78P341N/342N/343N
8-Bit Microprocessor with OTP ROM
Product Specification (V1.0) 12.01.2006
• 33
(This specification is subject to change without further notice)
6.4 I/O Ports
The I/O registers (Port 5, Port 6, and Port 7) are bidirectional tri-state I/O ports. Port 5
is pulled-high and pulled-down internally by software. Likewise, P6 has its open-drain
output set through software. Port 5 features an input status changed interrupt (or
wake-up) function. Each I/O pin can be defined as "input" or "output" pin by the I/O
control register (IOC5 ~ IOC7). The I/O registers and I/O control registers are both
readable and writable. The I/O interface circuits for Port 5, Port 6, and Port 7 are
illustrated in Figures 6-4, 6-5, 6-6, & 6-7 (see next page).
PCWR
PCRD
PDWR
PDRD
IOD
0
1
M
U
X
PORT
Q
Q
_
D
D
Q
Q
_
CLK
P
R
C
L
CLK
P
R
C
L
Note:
Open-drain is not shown in the figure.
Fig. 6-4 I/O Port and I/O Control Register Circuit for Port 6 and Port 7
PCRD
IOD
PCWR
PDWR
PDRD
Bit 6 of IOCE
PORT
M
U
X
0
1
CLK
CLK
CLK
P
P
P
R
R
R
C
L
L
L
C
C
Q
Q
Q
Q
Q
Q
D
D
D
_
_
_
INT
Note:
Open-drain is not shown in the figure.
Fig. 6-5 I/O Port and I/O Control Register Circuit for P60 (/INT)



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