Code Mercenaries IOW56-DG User manual

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1. Features

• USB interface

• USB V1.1/2.0 full speed device

• 50, 100, or 400 kHz I2C (IIC / TWI) master

• SPI master up to 8 MBit/sec

• Throughput up to 60 kbyte/s

• Based on IO-Warrior56

• Supports clock stretching on I2C

• Multi master capable I2C

• 5 V and 3.3 V available for external circuit

• Uses standard system drivers

• Standard form factor, no blocked ports

• Extended temperature: -10 to +85°C

1.1 Variants

The standard IOW56-DG is shipped as a kit
containing an assembled and tested PCB, a two
part dongle case, and a ten wire cable to solder to
the dongle as required for the target application.

1.2 Custom variants

OEM versions with specialized cables or custom
modifications are possible

2. Functional overview

IOW56-DG packages a standard IO-Warrior56 in a
small form factor dongle case with a 3.3 V voltage
regulator.
The SPI and I2C signals of the IO-Warrior56 are
made available externally through solder pads to
allow application specific cabling to be attached.
All software and tools for IO-Warrior56 are also
usable for the dongle.
The I2C interface works as a bus master, supports
clock stretching handshake and multi master
configurations.
SPI works as a master with clock rates up to 8
MHz (cable length may be critical at higher clock
rates).
For compatibility with low voltage slaves the
internal pull up resistors of IOW56 can be
switched off by software command. Pull up control
is independent for SPI and I2C.

3. Connecting the cable

The function of the signals is marked on the board
next to the solder pads for the cable:
SS SPI - Slave Select, active low
+5 5V from USB, max. 100 mA
MOSI SPI - Master Out Slave In
RDY SPI - /DRDY
SCK SPI - Serial clock
MISO SPI - Master In Slave Out
GND Ground
SDA I2C SDA signal
SCL I2C SCL signal

3.3 3.3V output, max. 50 mA

Solder the cable to the pads as required for your
application.
The 5 V and 3.3 V supplies are meant to be used
exclusive of each other. If both are used at the
same time the combined current may not exceed
100 mA.

Dongle shown from both sides.

V1.0.1 October 6th 2012

USB to SPI and I2C Dongle
based on IO-Warrior56

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3.1 Compatibility with 3.3 V slaves

If a 3.3 V slave is to be connected the internal pull
up resistors of the IOW56 should be switched off
by software on enabling the I2C or SPI function.
This requires external pull up resistors which may
be added either on the slave side or soldered to the
lower side of the dongle PCB. It is recommended
to add protection diodes so the slave does not get
exposed to 5 V on the signal lines before the SPI or
I2C function of the IOW56 is initialized.
There are landing pads for pull up resistors
connecting to 3.3 V on the lower side of the dongle
PCB

3.2 Pull Up resistor positions

4. Software/Programming support

The IO-Warrior SDK is used with the dongle. The
SDK, additional software, and the data sheet for
the IOW56 are available on our website.

5. FCC / CE

The IOW56-DG is sold as kit. As such it can not be
FCC or CE approved.
Code Mercenaries has excerted greatest care in
designing this module to minimize RF emission
and assure stable operation. Though the use of
proper cable materials and correct integration into
a device is crucial to assure product safety and
interference free operation.
The integrator who assembles the module into a
device has to take care for appropriate testing and
safety measures.

6. Ordering information

The standard packaging for IOW56-DG is a blister
pack containing the parts for one unit.
The order code is:
IOW56-DG
Bulk packs with the parts for 10 units in a bag are
availabe under the order code:
IOW56-DG10

Legal Stuff

This document is ©1999-2012 by Code
Mercenaries.

The information contained herein is subject to
change without notice. Code Mercenaries makes
no claims as to the completeness or correctness of
the information contained in this document.

Code Mercenaries assumes no responsibility for
the use of any circuitry other than circuitry
embodied in a Code Mercenaries product. Nor
does it convey or imply any license under patent or
other rights.

Code Mercenaries products may not be used in any
medical apparatus or other technical products that
are critical for the functioning of lifesaving or
supporting systems. We define these systems as
such that in the case of failure may lead to the
death or injury of a person. Incorporation in such a
system requires the explicit written permission of
the president of Code Mercenaries.

Trademarks used in this document are properties of
their respective owners.

Code Mercenaries
Hard- und Software GmbH
Karl-Marx-Str. 147a
12529 Schönefeld OT Grossziethen
Germany
Tel: x49-3379-20509-20
Fax: x49-3379-20509-30
Mail: [e-mail]
Web: www.codemercs.com

HRB 9868 CB
Geschäftsführer: Guido Körber, Christian Lucht

V1.0.1 October 6th 2012

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1. Features

• Full speed USB interface (12MBit/sec)

• Full USB V2.0 compliant full speed device

• Full USB HID 1.1 compliance

• 50 general purpose I/O pins

• IIC master with 50, 100, or 400kbit/sec, multi
master capable

• Supports a wide range of alphanumeric and
graphic LCD modules

• SPI master up to 8MBit/sec

• Drives a LED matrix up to 8x64 with external
shift registers

• Drives a 8x8 key or switch matrix

• Easy to use starter kit

• Software support for Mac(10.2 and up), Linux
(Kernel 2.6), and Windows (XP and up)

• No USB knowledge necessary to use

• Single +5V power supply

• Available in MLFP56 package or 100mil spaced
through hole module.

• Extended temperature range: -40°C to +85°C

1.1 Variants

Right now the IO-Warrior chip family is available
in three low speed and one full speed variant.
This data sheet describes the full speed variant
IOW56.
For the low speed IO-Warrior chips please refer to
the separate data sheet.

1.2 Custom variants

Custom adaptions are available on request.

1.3 Supported OSes

WinXP and later
Compatibility with older Windows version is not
tested and no support available for those
Linux kernel 2.6 and up
MacOS X 10.3 and up

2. Functional overview

IO-Warrior offers a simple access to the USB.
Many projects that formerly used the parallel port
or some other kind of direct I/O interface today
face the problem that getting simple things to work
on the USB is quite complex.
With a serial or parallel port you needed only a
simple circuit to control an external relay or read a
single switch.
With USB you need a microcontroller that handles
all the protocol work to do the same thing. Several
standard commands need to be supported to get a
device accepted as a USB device, let alone
implementing any real function.
IO-Warrior brings simplicity to the USB. The
protocol is encapsulated in the IO-Warrior Chip.
You only have to care about the I/O pins and have
to write only a few simple lines of code to access
them.
IO-Warrior also supports a range of industrial
standard interfaces to simplify interfacing to
certain chips or modules. These interfaces are
handled internally in IO-Warrior removing the
bandwith wasting controlling of individual pins.

V 1.0.3, November 6nd 2012 for chip version V1.1.0.1

Generic universal I/O Controller
for USB

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2.1 Product selection matrix

2.2 Starter Kits

With the IO-Warrior Starter Kits you can make your first steps with IO-Warrior 56. A few elements on the
kit allow first experiments with inputs and outputs, the bread board area provides space to test your
individual circuit.
The starter kits are sold unassembled. A few minutes soldering will provide you with a working unit.

Actual components supplied with the kit may vary from those shown here.

Type USB Speed I/O Pins LCD IIC SPI RC5 IR Keys LEDs Timer SSOP48 DIL24 SOIC24 MLFP56 Module
IO-Warrior40
IO-Warrior24

low
low

32
16



 

8x16 8x32

8x32 







IO-Warrior56 full 50  8x8 8x64 

V 1.0.3, November 6nd 2012 for chip version V1.1.0.1

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3.0 Pin Configurations

IO-Warrior56-LFXI

MLFP56 Package

All drawings: TOP VIEW!

V 1.0.3, November 6nd 2012 for chip version V1.1.0.1

P2.3

P2.5

P2.7

P0.1

56

55

54

1

P0.3

P0.5

53

525051

P0.7

Gnd

Vcc

P0.6

49

48

P0.4

47

P0.2

46

P0.0

45

P2.6

44

P2.4

43

42

P2.2

P2.1

P4.7

P4.5

P4.3

P4.1

P3.7

P3.5

P3.3

P3.1

P5.7

P5.5

P5.3

P5.1

10

11

12

13

14

2

3

4

5

6

7

8

9

15

16

17

18

192120

22

23

24

25

26

27

41

40

39

38

37

36

35

34

33

32

31

30

29

28

P2.0

P4.6

P4.4

P4.2

P4.0

P3.6

P3.4

P3.2

P3.0

P5.6

P5.4

P5.2

P5.0

P1.7

P1.5

D-

D+

P1.3

Gnd

P1.1

Vcc

P6.7

P6.0

P1.0

P1.2

P1.4

P1.6

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IO-Warrior56-MOD

Module

Pin numbers

All drawings: TOP VIEW!

1234

56

78

910

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

27 28

29 30 3132

3334

3536

3738

3940

4142

4344

4546

4748

4950

5152

5354

5556

V 1.0.3, November 6nd 2012 for chip version V1.1.0.1

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IO-Warrior56-MOD

Module

Pin names

All drawings: TOP VIEW!

V 1.0.3, November 6nd 2012 for chip version V1.1.0.1

P1.5

P5.1

P5.5

P3.1

P3.5

P4.1

P4.5

P2.1

P2.5

P0.1

P0.5

P0.6

NC

P1.3

P1.7

P5.3

P5.7

P3.3

P3.7

P4.3

P4.7

P2.3

P2.7

P0.3

P0.7

NC

GndD-D+

Vcc

P1.0

P1.2

P1.6

P5.2

P5.6

P3.2

P3.6

P4.2

P4.6

P2.2

P2.6

P0.2

P6.7

P6.0

P1.1

P1.4

P5.0

P5.4

P3.0

P3.4

P4.0

P4.4

P2.0

P2.4

P0.0

P0.4

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4.0 Pin Assignments IO-Warrior56

Pi # MLFP56 Pin# Module Type Name Special function

1
2

22
19

I/O
I/O

P2.3

P2.1X3X2
3
4
5
6

20
17

I/O

I/O
18
15

I/O

I/O

P4.7
P4.5 LCD-CS1 (not driven by special mode function)
P4.3
P4.1

LCD-E-/RE

LCD-RS
7
8
9

10

16
13

I/O

I/O
14
11

I/O

I/O

11
12
13
14

12

9

I/O

I/O
10

7

I/O

I/O

P3.7
P3.5

LCD-Data7

LCD-Data5
P3.3
P3.1

LCD-Data3

LCD-Data1
P5.7
P5.5
P5.3
P5.1

SPI-/DRDY

SPI-/SS

15
16
17
18

8
5

I/O
I/O

6

53

I/O

I/O
19
20
21
22

4
3

power

USB
2
1

USB

power

P1.7
P1.5

IIC-SCL

IIC-SDA
P1.3
P1.1

LED-/OE

LED-Clk, undefined state during start up
Gnd
D+
D­Vcc

23
24
25
26

56
55

I/O

I/O
54
52

I/O

I/O

27
28
29
30

51
50

I/O

I/O
49
48

I/O

I/O

P6.7
P6.0 Power select during start up
P1.0
P1.2

LED-Data, undefined state during start up

LED-Strobe
P1.4
P1.6
P5.0
P5.2

SPI-SCK

SPI-MOSI

31
32
33
34

47
46

I/O

I/O
45
44

I/O

I/O

35
36
37
38

43
42

I/O

I/O
41
40

I/O

I/O

P5.4
P5.6

SPI-MISO

P3.0
P3.2

LCD-Data0

LCD-Data2
P3.4
P3.6

LCD-Data4

LCD-Data6
P4.0
P4.2

LCD-/On

LCD-R/W-/WE

39
40
41
42

39
38

I/O

I/O
37
36

I/O

I/O

43
44
45
46

35
34

I/O

I/O
33
32

I/O

I/O

P4.4
P4.6

LCD-E2-/RES

LCD-CS2 (not driven by special mode function)
P2.0
P2.2X0X2
P2.4
P2.6X4X6
P0.0
P0.2Y0Y2

47
48
49
50

31
27

I/O
I/O

-

-

power

power
51
52
53
54

28
25

I/O

I/O
26
23

I/O

I/O

P0.4
P0.6Y4Y6
Vcc
Gnd
P0.7
P0.5Y7Y5
P0.3

P0.1Y3Y1
55
56

24
21

I/O
I/O

P2.7

P2.5X7X5

V 1.0.3, November 6nd 2012 for chip version V1.1.0.1

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4.1 Pin descriptions

D+, D-

Differential data lines of USB. Put 24 series
resistors in these lines and connect them to the
USB cable or plug, see application circuit for
details. The IOW56-MOD already has the series
resistors.
For a PCB layout make sure to run these two
signals next to each other. USB data is a
differential signal that produces best signal quality
and lowest RF emission if the two lines are close to
each other.

P0.0..P0.7

First I/O port of the chip. These pins correspond
with the lowest 8 bits of the input or output (bits

0..7).

P1.0..P1.7

Second I/O Port. Corresponds to the bits 8..15.
P1.0 and P1.1 are used during production of the
IOW56. After power up and during the internal
start up process of IOW56 these two pins can
change their status a couple times. Take this into
account when connecting external circuits.

P2.0..P2.7

Third I/O Port. Corresponds to the bits 16..23.

P3.0..P3.7

Fourth I/O Port. Corresponds to the bits 24..31.

P4.0..P4.7

Fifth I/O Port. Corresponds to the bits 32..39.

P5.0..P5.7

Sixth I/O Port. Corresponds to the bits 40..47.

P6.0, P6.7

Seventh I/O Port. Corresponds to the bits 48 and

55. This port has only two pins. Always write the
unused bits as "1".

GND

Power supply ground.

Vcc

Supply voltage.

A 100nF ceramic capacitor is required to be
connected directly to each pair of the power supply
pins. The IOW56-MOD already has the capacitors.
The MLFP56 package has a center ground pad that
must be connected to ground (Vss).

4.2 Special mode pin functions

IO-Warrior56 supports various higher level
functions including IIC, SPI, LED matrix, key
matrix, and driving various LCD modules.
Handling IIC via the normal generic I/O would be
very slow as each edge of data and clock would
have to be transmitted separately. At a rate of 1000
such transactions per second (which is the
maximum IO-Warrior56 is allowed by USB
specifications) the maximum bit rate and
throughput would be around 250 bits/sec.
To make IIC and other devices usable IO-Warrior
implements the special mode functions. By
handling the IIC inside IO-Warrior the actual data
rate is approaching the theoretical maximum.
When any of the special mode functions is
activated the corresponding pins will no longer
respond as generic I/O pins but are under control of
the activated special mode function.

4.2.1 IIC Mode pins

IO-Warrior56 can act as an IIC master with 50,
100, or 400kbit/sec data rate. Multi master mode is
supported.
IO-Warrior56 supports clock stretching handshake
with slaves that need throttling of the data flow.
The following pins get reassigned when the IIC
function is enabled:

These pins will no longer be affected by the data
sent via the normal port setting command. Both
pins have internal pull up resistors and open drain
drivers. They can be connected direct to IIC
compatible chips. Optionally the internal pull up
resistors can be disabled by setting the appropriate
flag in the IICenable command. This allows
operation with lower voltage IIC slaves.

Function IOW56
SCL
SDA

P1.7
P1.5

V 1.0.3, November 6nd 2012 for chip version V1.1.0.1