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