4�½�MASK LCD型单片机芯片BL2456
P1.0
P1.1
P1.2
P1.3
P2.0
P2.1
P2.2
P2.3
P3.0
P3.1
P3.2
P3.3
I
4-bit input port.
1-bit or 4-bit read and test is
possible.
4-bit pull-up resistors are
software assignable.
4-bit I/O port.
1-bit and 4-bit read/write and
test is possible.
4-bit pull-up resistors are
software assignable.
4-bit I/O port.
1-bit and 4-bit read/write and
test is possible.
Each individual pin can be
specified as input or output.
4-bit pull-up resistors are
software assignable.
4-bit I/O ports.
Pins are individually software
configurable as input or output.
1-bit and 4-bit read/write and
test is possible.
4-bit pull-up resistors are
software assignable.
Output port for 1-bit data (for
use as CMOS driver only).
LCD segment signal output.
LCD segment signal output.
LCD common signal output.
LCD power supply.
Built-in
voltage
resistors.
LCD power control.
LCD clock output for display
expansion.
LCD synchronization clock output
for LCD.
display expansion.
External
clock
timer/counter 0.
input
for
dividing
5
25
26
-
P3.0
P3.1
-
Input
Input
-
D
D
17
18
19
20
21
22
23
24
25
26
27
28
INT0
INT1
INT2
TCL0
TCLO0
–
CLO
BUZ
LCDCK
LCDSY
Input
A-4
I/O
Input
D
I/O
Input
D
P6.0–P6.3
I/O
29-32
KS0-KS3
Input
D
P8.0–P8.7
SEG0-SEG23
SEG24-SEG31
COM0-COM3
VLC0–VLC2
O
O
O
O
-
40-33
64-41
40-43
1-4
6-8
SEG24-SEG31
-
P8.0-P8.7
-
-
Output
Output
Output
Output
-
H-1
H
H-1
H
-
BIAS
LCDCK
LCDSY
-
I/O
I/O
TCL0
TCLO0
INT0
INT1
I
I/O
I
20
21
17
18
P1.3
P2.0
P1.0
P1.1
Input
Input
Input
A-4
D
A-4
Timer/counter 0 clock output.
External interrupt.
The triggering edge for INT0 and
-3-
Total
11 Pages
http://www.belling.com.cn
8/24/2006
Wrote by dipeng
BELLING [ SHANGHAI BELLING CO., LTD. ]
