SyncMOS Technologies International, Inc.
SM89516
8-Bits Micro-controller
With 64KB flash & 1KB RAM embedded
2. Port 4 for PLCC or QFP package :
The bit addressable port 4 is available with PLCC or QFP package. The port 4 has only 4 pins and its port address is
located at 0D8H. The function of port 4 is the same as the function of port 1, port 2 and port 3.
Port4 (P4, $D8)
bit-7
Unused
Read / Write:
Reset value:
-
*
Unused
-
*
Unused
-
*
Unused
-
*
P4.3
R/W
1
P4.2
R/W
1
P4.1
R/W
1
bit-0
P4.0
R/W
1
The bit 3, bit 2, bit 1, bit 0 output the setting to pin P4.3, P4.2, P4.1, P4.0 respectively.
The port 4 output buffers can sink 20mA and can drive LED display directly.
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89516 08/2006
8
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
