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
INT1 is selectable.
Only INT0 is synchronized with
the system clock.
INT2
I
Quasi-interrupt with detection
of rising edge signals.
KS0–KS3 I/O Quasi-interrupt input with
falling edge detection.
CLO
I/O CPU clock output.
BUZ
I/O 2, 4, 8 or 16 kHz frequency output
for buzzer sound with 4.19 MHz
main system clock or 32.768 kHz
subsystem clock.
XIN, XOUT -
Crystal, ceramic or RC oscillator
pins for main system clock.
For external clock input, use XIN
and input XIN’s reverse phase to
XOUT.
XTIN, XTOUT -
Crystal oscillator pins for
subsystem clock.
For external clock input, use
XTIN and input XTIN’s reverse
phase to XTOUT.
VDD
-
Main power supply.
VSS
-
Ground.
RESET
-
Reset signal.
TEST
-
Test signal input (must be
connected to VSS).
注：当 I / O 端口被设值为输出模式时上拉电阻自动禁止。
19
29-32
23
24
12,11
14,15
9
10
16
13
P1.2
P6.0-P6.3
P2.2
P2.3
-
-
-
-
-
-
Input A-4
Input D
Input D
Input D
-
-
-
-
-
-
-
-
Input B
-
-
管脚电路图：
Type A
http://www.belling.com.cn
-4-
Total 11 Pages
Type C
8/24/2006
Wrote by dipeng
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