em78p257 ELAN Microelectronics Corp, em78p257 Datasheet - Page 31

• Manufacturer Part Number: em78p257
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

This specification is subject to change without prior notice.
T I 0
T I 1
T I 8
Fig. 10 Block Diagram of I/O Port 5 with Input Change Interrupt/Wake-up
P50 ~ P57
PORT
Fig. 9 The Circuit of I/O Port and I/O Control Register for P50~P57
I O C F . 1
NOTE: Pull-high(down) is not shown in the figure.
1
0
M
U
X
D
CLK
PCRD
Q
Q
Q
Q
P
R
C
L
_
_
31
Q
_
Q
R
C
L
R
C
L
P
CLK
P
CLK
D
D
PDWR
PCWR
PDRD
R F . 1
IOD
TI n
EM78P257
07.27.2004 (V1.4)
OTP ROM