EXPANDIO-USB-FS-DIL-28 HEXWAX, EXPANDIO-USB-FS-DIL-28 Datasheet - Page 10

• Manufacturer Part Number: EXPANDIO-USB-FS-DIL-28
• Description: INTERFACE, USB I/O EXPANDER, 28DIL
• Manufacturer: HEXWAX

Specifications of EXPANDIO-USB-FS-DIL-28

• Usb Type: I/O Expander
• Usb Version: 2.0
• No. Of Ports: 1
• Supply Voltage Range: 2.7V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: DIP
• No. Of Pins: 28
• Package / Case: DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A typical display multiplex scan circuit is shown in figure
8. The value of the resistors on the data lines should be
selected as recommended by the display manufacturer,
bearing in mind that if there are n scan lines then each
LED will have a maximum on-time duty cycle of 1/n.
Stream Data
The identifier STREAM (0xAD) repeatedly executes the
commands sent in the previous report.
command must be the first command in the report.
Bytes 1 and 2 indicate repeat interval as shown in table
8. The Timer2 is used for triggering the stream. To stop
streaming, send a stream command with Byte 1 equal to
zero.
Each time the stream is triggered by the timer,
expandIO-USB sends a STREAM (0xB4) response.
Bytes 1 (MSB) and 2 (LSB) will contain a sequence
number which will increment by one each time a stream
response is sent (and rolling over from 0xFFFF to
0x0000).
executed and responses relating to those commands
will be sent.
The stream rate will only be achieved if the commands
requested can be executed at the rate requested.
Otherwise, the rate will be the maximum achievable rate.
p10
AC 03 46 FF
AC 04 47 80
AB 23 1C FF
AB 00 00 00
Example:
Byte 1 = 01011010, Byte 2 = 11000100, low speed device
Formula is 8·y·(x+1) / 3 μs, x is 11 decimal, y is 196 decimal
Repeat interval is 6.272ms (Slowest possible is 10.88ms)
bits 1-0
Byte 1,
AC 02 45 FF Response – Command acknowledge
AC 03 46 FF Response – Command acknowledge
AC 94 47 80 Response – Command acknowledge
AB 08 7B 00 Response – Command acknowledge
AB 00 00 00 Response – Confirm command
01
10
Data
lines
outputting 45-46-47 on Port C. Send
(Scans bits 2, 3 and 4 of Port B while
The requested commands will then be
further MPXDATA commands
Table 8. Stream repeat interval
bits 6-3
Byte 1,
Figure 8
to change displayed data)
x
x
Segments
Command – When scan bit 3 high,
Command – When scan bit 4 high,
Command – Set Port B bits 2-4 scan,
Command – Stop scanning
a-g, DP
100R
22-Nov-10
Byte 2
y
y
COM
.
Output 46 on Port C’s
data pits, full brightness
Output 47 on Port C’s
data pits, half brightness
Port C all bits data
Scan lines
COM
Repeat Interval
.
2·y·(x+1) / 3 μs
8·y·(x+1) / 3 μs
expandIO-USB
The stream
COM
.
expandIO-USB will never be so busy streaming data
that it will not be able to respond to new commands.
Example:
Note: The previous report is only stored if streaming is
not in process. To change the stream commands, stop
streaming first, then send the new report to be streamed,
then start streaming again.
Get Firmware ID
The identifier GETFWID (0x94) retrieves the firmware
version number. In the response the device is in byte 1
(0x14 for 14K50, 0x25 for 2455, etc) and a version
number is in bytes 2 (MSB) and 3 (LSB).
Example:
Customization
The product can be customized in one of three ways:
96 16 00 00*
96 15 00 00*
AD 5A C3 00
AD 00 00 00
94 00 00 00
96 16 01 23
96 15 02 4A Response: AN5 = 0x24A
AD 5A C3 00 Response: Acknowledge command
AD 00 01 00 Response: Sequence number 0x0001
96 16 01 22
96 15 02 C3 Response: AN5 = 0x2C3
AD 00 02 00 Response: Sequence number 0x0002
96 16 01 21
96 15 02 C4 Response: AN5 = 0x2C4
94 14 00 01
1.
2.
3.
HW148-18
Using the HIDconfig.exe application (figure 9)
in the development kit. This application makes
it very easy to copy the configuration from an
existing product to a new product and is
suitable for in-factory use. (It cannot be used if
you change the Vendor ID and / Product ID.)
By requesting the custom settings to be
supplied pre-programmed when buying pre-
programmed chips (5K units minimum).
Using
Documentation
available on request.
Command – Get AN6 using Vref+
Response: AN6 = 0x123
Command – Get AN5 using Vref+
Command – repeat the report every
~6.27ms (see table 8)
Response: AN6 = 0x122
Response: AN6 = 0x121
Command – Stop streaming
* These commands must be in the
same report.
Command – Get Firmware ID
Response – 14K50 v0001
customization
on
these
www.firmwarefactory.com
commands
commands.
is