Справочник Пользователя для IBM EM78P259N/260N
EM78P259N/260N
8-Bit Microprocessor with OTP ROM
Product Specification
(V1.2) 05.18.2007
• 29
(This specification is subject to change without further notice)
PCWR
PCRD
PDWR
PDRD
IOD
0
1
M
U
X
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. 6-3 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
X
0
1
CLK
CLK
CLK
P
P
P
R
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. 6-4 I/O Port and I/O Control Register Circuit for P60 (/INT)