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EM78P221/2N
8-Bit Microcontroller with OTP ROM
24 •
Product Specification (V1.0) 10.19.2007
(This specification is subject to change without further notice)
PCRD
M
U
X
IOD
0
1
INT
PDRD
P77, /INT0
P71, /INT1
EIS1,EIS0
PCWR
DQ
Q
_
CLK
P
R
C
L
PDWR
DQ
Q
_
CLK
P
R
C
L
P
R
C
L
CLK
DQ
Q
_
PORT
Note: CO2, Pull-high and Open-drain are not shown in the figure.
Fig. 6-4 I/O Port and I/O Control Register Circuit for P77 (/INT0) and P71 (/INT1)
PCRD
M
U
X
IOD
0
1
PDRD
P60 ~ P67
PCWR
DQ
Q
_
CLK
P
R
C
L
PDWR
DQ
Q
_
CLK
P
R
C
L
P
R
C
L
CLK
DQ
Q
_
TI n
PORT
Note: Pull-high (down) and Open-drain are not shown in the figure.
Fig. 6-5 I/O Port and I/O Control Register Circuit for Port 6