All I/O External Output Module - Qianglongsheng Electronic Technology MCD-DEMO-II Manual

DEMO-II Copyright of Qianlongsheng Electronics Technology (Shenzhen) Co., Ltd.
Chapter 4: DEMO-II System Functional Module Details
This chapter will describe in more detail on DEMO-II development board and the functional modules by illustrating the
schematics of the modules and the points that needs to pay attention to during usage. And in the CD-ROM that is
provided along with the product, we have included a number of examples prepared by using such functional modules,
and these examples cover the layout of the hardware and software, and the source code with detailed annotation in
Chinese as well as the executed results, which aids to the reference especially for beginners. As the experimental board
is modular in design, the configuration of your project may diverse in large amount, and the output ports are all available
for external resources. The hardware and program can be at reader's own will, so readers may draw inferences about
other cases from one instance.

4.1 All I/O External Output Module

All I/O resources on DEMO-II development board are designed for external output. Users can build their own circuit
by taking advantage of the existing resources of DEMO-II. As shown in Figure 4-1.
This module consists of the following main components:
1) 40 pin chip all I/O (PORT A/B/C/D/E)
2) serial programming voltage VPP.
3) power supply VCC and GND.
Figure 4-1 all I/O and external output schematic
Page 13 of 33
1
VC C
R B 7 2
R B 6 3
R B 5 4
R B 4 5
R B 3 6
R B 2 7
R B 1 8
R B 0 9
R D 7 10
R D 6 11
R D 5 12
R D 4 13
R D 3 14
R D 2 15
R D 1 16
R D 0 17
18
R C 0 19
R C 1 20
R C 2 21
R C 3 22
R C 4 23
R C 5 24
R C 6 25
R C 7 26
R E 2 27
R E 1 28
R E 0 29
R A 5 30
R A 4 31
R A 3 32
R A 2 33
R A 1 34
R A 0 35
36
VP P