USB-DAQ-SS Flexipanel, USB-DAQ-SS Datasheet - Page 6

• Manufacturer Part Number: USB-DAQ-SS
• Description: IC SYSTEM DATA LOGGER 20-SSOP
• Manufacturer: Flexipanel

Specifications of USB-DAQ-SS

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 658-1042-5

For further dimensional information, refer to figure 6-7 of
the USB 2.0 Specification, in the development kit.
SD Card Connector
The SPI connections for SD cards is shown in figure 7.
The two pins marked BH are unused and should be
biased high or left unconnected.
Device Programming
USB-DAQ is programmed from the Excel Spreadsheet
USB-DAQ Complier.xls. In it, you can specify general
device configuration, application code and application
data.
application file called CONFIG.DAT and any data
logging files you may have specified. To program the
USB-DAQ, copy these files to the device. (A write lock
option can be specified to prevent further tampering if
required.)
This section provides an overview of the various
elements of the compilation process. Refer to the USB-
DAQ
microcontroller data sheets for full details. Also see the
examples in the development kit.
Device Configuration
The device configuration section of the spreadsheet
allows general settings to be specified, including:
p6 of 8
- Device / Company name
- Real time clock settings
- Memory settings
- Application execution settings
- Data logging files
- Daylight savings settings
12.00
Figure 6. Integral USB connector dimensions
0.50
3.00
After compilation, USB-DAQ creates a hidden
Compiler.xls
1.00-2.00
Shoulder required to prevent over-insertion
1.00
1.00
Overall PCB width 16.00 or less
Pin 9 is out of order; this is not an error.
2.25
1.25
Figure 7. SD Card Connections.
26-Aug-10
11.75
spreadsheet
4. Vss
3. D+
2. D-
1. Vdd
including tracks 2.00 - 2.20
Contacts plated with hard
gold flash (0.25-1.27µm)
over nickel (2.6-5.0µm)
Overall PCB thickness
and
USB-DAQ
the
Dimensions in mm
base
Write
unmodifiable by the PC. It is intended for completed
commercial applications only, to ensure the user does
not accidentally delete the files.
If write protect is set and an attempt is made to modify
or delete files, USB-DAQ will report that the files were
successfully modified, even though they were not. This
is necessary to enable to time to be set by appearing to
modify a file. Due to file caching by the PC, the file may
appear to be modified until USB-DAQ is removed and
re-inserted.
During development, the use of an Escape pin is
strongly recommended.
recover the USB-DAQ if your code unintentionally locks
the device. Failure to do so risks rendering the device
useless. If both write protect and the escape pin are
enabled, escape takes precedence and allows the write-
protected device to be modified.
Source Code
The source code section specifies the code to execute
during initialization and when an event occurs.
following instructions are provided:
Registers
Most operations are associated with registers. Available
registers include:
Non-Volatile Memory
Two sections of non-volatile memory are available:
- Write protect & Escape pin
- ADD, SUB, MULT, DIV, MOD, INC, DEC, COPY
- AND, OR, XOR, COMP, NEG, ROTL, ROTR
- FOR, NEXT, DO, WHILE, BREAK, CONTINUE
- IF, ELSEIF, ELSE, ENDIF
- CALL, RETURN, GOTO, ONERROR
- CLEARFILE, SETFILE, READ
- WRITEB, WRITEHEX, WRITEDEC, WRITER
- DELAY, RESET, SLEEP
- GETAN, GETBIT, SETBIT
- GETEE, SETEE, LOOKUP
- GETAT, SETAT
- 56 bytes general random access memory, usable
- 21 bytes of DAQ status registers, including flags,
- Most
- 64 bytes of EEPROM may be written and read by
- Program code space can contain read-only data
as 1/2/4-byte, signed/unsigned integers
error status, and time and date values
microcontroller, including ports, peripherals and
interrupt control. (The underlying controllers are
PIC18F2550
PIC18F14K50 for the 20-pin device.)
the application
that the application can read with the LOOKUP
and WRITER instructions.
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