MR-BUSIO-MAIN Gravitech, MR-BUSIO-MAIN Datasheet - Page 2

• Manufacturer Part Number: MR-BUSIO-MAIN
• Description: Daughter Cards & OEM Boards BUSIO MAIN BOARD
• Manufacturer: Gravitech

Specifications of MR-BUSIO-MAIN

• Rohs: yes
• Product: BusIO Main Boards
• Description/function: MR-BusIO-MAIN is an experiment board which receives output signals from any microcontrollers
• Dimensions: 6 in x 3.5 in
• Interface Type: I2C
• Operating Supply Voltage: 5 V
• Tool Is For Evaluation Of: PCF8574
• For Use With: BusIO Daughter Boards

34-PIN Header
I
MRconnect
2
C (Optional)
10-PIN
The MR-BusIO-MAIN is an experiment
board which receives output signals from
any microcontrollers. The signals then
distribute to daughter boards for each
experiment. It designed to connect directly
with 10PIN MRconnect
easy way to control up to 8 daughter
boards.
The MR-BusIO-MAIN can receive 3 types
of
microcontrollers to the board directly
(10PIN
through PCF8574 Expansion Port IC
(optional), or from 34-pin header that have
jumpers to select which pins to use to
control the daughter boards. The block
diagram in Figure 1 show the structure of
the I/O pins for MR-BusIO-MAIN board.
There are three ways to connect to the
board. User must choose only one way to
connect. The signals then route to IO0-
IO7 for all 8 daughter boards. PCB size is
6.0” x 3.5”.
MR-BusIO-MAIN
©
input:
FIG1: System block diagram
MRconnect
Description
from
Copyright © 2007 MicroResearch
GRAVITECH GROUP
8-bit
©
),
©
. It is a quick and
from
TM
port
BusIO MAIN BOARD
I
2
of
User Manual
C
any
bus
WWW.GRAVITECH.US
When using I
connect PCF8574 IC on to the board. The
jumpers to configure I
set to appropriate setting base on the user
code. In the event of user want to switch
to use different input type, i.e. 10PIN
MRconnect
PCF8574 IC before attempt to connect.
When using 34-PIN header, user must
assign jumpers to select which port pins to
use. There are three ports available to use
A, B, or C. User can only select from one
port.
When using 10PIN MRconnect
connect directly to 10-PIN header without
configure any things.
The card can be power by using the
power from the 10PIN MRconnect
header, pin 25 from 34-PIN header, or
external 2.5mm, center negative, 9-
16VDC wall adapter or pin 10 on I
header.
supply, make sure it is +5VDC.
I
34-PIN Header:
10PIN MRconnect©:
Power:
2
C:
When using external power
©
,
(10-PIN MRconnect
Interfaces
2
C interface, user must
user
2
C address must be
MUST
©
©
ready)
, user can
©
2
remove
C input
, 2-PIN