DLP-2232PB-G

DLP-2232PB-G
*LEAD-FREE*
USB / Microcontroller Module
The DLP-2232PB combines the same USB interface used in the DLP-2232M module with a
Microchip PIC microcontroller to form a rapid development tool. The 16F877A
microcontroller is preprogrammed with basic functionality for accessing the port pins and
can be reprogrammed with user hex code via an on-board programming interface, no
external programmer required.
DLP-2232PB FEATURES
•
Send/receive data over USB to a host computer at up to 2 megabits per second
•
Standard .9 inch wide DIP footprint, 4 layer pcb with internal ground plane
•
16 digital I/O lines (5 can be configured as A/D inputs) plus the 8-bit data bus available for
interfacing to user electronics
•
Microchip 16F877A processor with 8K FLASH ROM, 368 bytes RAM, and a multi-channel,
10-bit A/D converter
V1.7
Page 1 of 15
May 2010
•
“Token I/O” code preprogrammed into the 16F877A’s ROM for basic port pin input/output
capability including access to the A/D, EEPROM, and external digital temperature sensors.
ROM can be easily erased and reprogrammed with built-in Flash programmer or a usersupplied compatible programmer
•
On-board Flash programmer takes advantage of ‘A’ version Microchip microcontroller in that
the entire 8K ROM can be programmed typically in under 4 seconds and read in under 1
second
•
No in-depth knowledge of USB is required as all USB protocol is handled automatically by the
on-board FT2232D and its support circuitry
•
Royalty-free device drivers eliminate the need for USB driver development in most cases
•
USB bulk or isocronous data-transfer modes
•
Required 5V supply can be taken directly from the USB port or supplied by user electronics
•
USB 1.1 and USB 2.0 compatible
•
USB VID, PID, serial number, and product description strings stored in on-board EEPROM
•
Virtual com port (VCP) drivers for:
- Windows 98 and Windows 98 SE
- Windows 2000/ME/XP
- Windows CE**
- MAC OS-8 and OS-9
- MAC OS-X**
- Linux 2.40 and greater
•
D2XX (USB direct drivers + DLL S/W interface)
- Windows 98 and Windows 98 SE
- Windows 2000/ME/XP
** In planning or under development.
APPLICATION AREAS
•
Prototype development
•
USB ISDN and ADSL modems
•
USB interface for digital cameras
•
USB interface for MP3 players
•
High-speed USB instrumentation
•
USB smart-card readers
•
Set top box (STB) PC-USB interface
•
USB hardware modems
•
V1.7
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May 2010
GENERAL DESCRIPTION
The DLP-2232PB provides a cost-effective, microcontroller-based method of interfacing an
electronic peripheral to a host computer via USB.
To send data from the peripheral to the host computer, the microcontroller simply writes the
byte-wide data into the FT2232D when TXE# is low by placing the data byte on the bus and
toggling the WR pin low and then high. If the FT2232D’s transmit buffer fills up or is busy storing
the previously written byte, it will take its TXE# high in order to stop further data from being
written until some of the FIFO data has been transferred over USB to the host.
When the host sends data to the peripheral over USB, the FT2232D will take RXF# low to let the
microcontroller know that at least one byte of data is available. The microcontroller then reads
the data via the RD# pin until RXF# goes high indicating that no more data is available to read.
The current data byte is present on the data bus so long as the RD# pin is held low. When RD#
is returned high, the next byte (if any) is prepared to be read.
By using FTDI’s virtual COM port drivers, the peripheral looks like a standard COM port to the
application software. Commands to set the baud rate are ignored--the FT2232D always transfers
data at its fastest rate regardless of the application’s baud-rate setting. The latest versions of the
drivers are available for download from DLP Design’s website at http://www.dlpdesign.com.
FIRMWARE UPLOAD APPLICATION
As mentioned above, the DLP-2232PB is shipped with its microcontroller pre-programmed with
firmware for basic port pin input/output capability including access to the A/D, EEPROM, and
external digital temperature sensors. However, if required, the Flash program memory can be
erased and reprogrammed with user supplied hex code using a firmware upload application that
can be downloaded from the DLP-2232PB product page at www.dlpdesign.com. Firmware can
also be reprogrammed into the Flash program memory via a 5-pin header and user-supplied
compatible programmer.
*** Note that Channel A is used exclusively for updating the Flash program memory of the PIC
16F877A and channel B is used to communicate with the PIC at run-time. Additionally, using
Channel A for firmware upload requires the DLL drivers to be selected for Channel A in the
EEPROM setup. This is the default setup for the DLP-2232PB from the factory.
V1.7
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May 2010
DRIVER SOFTWARE
The new combined Windows VCP / D2XX drivers for FT2232D are now available for on-line
download. These act as VCP Drivers for Windows 98 / ME / 2000 / XP and D2XX drivers for
Windows 2000 / XP. In the near future, FTDI will be publishing a version including D2XX support
for Windows 98 / ME.
FTDI's drivers are provided royalty free on the condition that they are used only with designs
incorporating an FTDI device (i.e. the FT2232D). The latest version of the drivers can be
downloaded from dlpdesign.com or ftdichip.com.
The driver download file is a combined set of drivers for Windows 98 / ME / 2000 / XP. Unzip the
file to a blank floppy disk or folder on your PC. (The drivers can coexist on the same floppy disk
or folder since the INF files determine which set of drivers to load for each operating system
version.) Once loaded, the VCP drivers allow your application software running on the host PC to
communicate with the DLP-2232PB as though it were connected to a COM (RS-232) port.
In addition to VCP drivers, FTDI's D2XX direct drivers for Windows offer an alternative solution to
the VCP drivers that allow application software to interface with the DLP-2232PB using a DLL
instead of a virtual com port. The architecture of the D2XX drivers consists of a Windows WDM
driver that communicates with the FT2232D device via the Windows USB stack and a DLL that
interfaces the application software (written in VC++, C++ Builder, Delphi, VB, etc.) to the WDM
driver. An INF installation file, uninstaller program, and D2XX Programmer’s Guide complete the
package.
The D2XX direct drivers add support for simultaneous access and control of multiple FT2232D
and FT245BM devices. The extended open function (FT_OpenEx) allows the device to be
opened either by its product description or serial number, both of which can be programmed to be
unique. The list devices function (FT-ListDevices) allows the application software to determine
which devices are currently available for use, again by product description or by serial number.
Download FTDI Application Notes AN232-03, AN232-05, AN232-06, and AN232-07 for
detailed instructions on how to install and remove the drivers.
V1.7
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May 2010
EEPROM WRITE UTILITY
The DLP-2232PB has the option to accept manufacturer-specific information that is written into
the on-board 93C56 EEPROM. Parameters that can be programmed include the VID and the
PID identifiers, the manufacturer's product string, and a serial number. Additionally, the basic
modes of operation for the FT2232D (USB-UART, USB-FIFO, etc) and desired drivers (VCP or
DLL) are also selected via the configuration settings in the EEPROM.
*** The default configuration for both channels is 245FIFO and D2XX DLL drivers.
MPROG version 2.2 is the latest EEPROM serializer utility from FTDI for the FT2232D device.
MPROG is based on the new combinational VCP / D2XX DLL driver package. This driver
package acts as VCP Drivers for Windows 98 / ME / 2000 / XP and D2XX drivers for Windows
2000 / XP. In the near future, FTDI will be publishing a version including D2XX support for
Windows 98 / ME.
MPROG will update the contents of the EEPROM even if the VCP drivers are currently selected
in the EEPROM.
QUICK START GUIDE
This guide requires the use of a Windows 98/ME/2000/XP PC that is equipped with a USB
port.
1. Download the combined Windows VCP / D2XX driver set from either dlpdesign.com or
ftdichip.com. Unzip the drivers onto a blank floppy disk or into a folder on the hard drive.
2. The DLP-2232PB can be configured to receive its operating power from the USB port or from
user electronics. Pins 23 and 24 allow for this configuration. (Refer to the Pinout Description
in the next section for a detailed description of the DLP-2232PB electrical interface.)
Note: The board will not operate until a power source has been selected as mentioned in
Step 2.
3. Connect the DLP-2232PB board to the PC via a standard A-B, 6-foot USB cable. This action
initiates the loading of the USB drivers. When prompted, select the folder where the device
drivers were stored in Step 1. Windows will then complete the installation of the device
V1.7
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May 2010
drivers for the DLP-2232PB board. The next time the DLP-2232PB board is attached, the
host PC will immediately load the correct drivers without any prompting. Reboot the PC if
prompted to do so.
At this point, the DLP-2232PB is ready for use.
If you wish to change drivers from the VCP to the DLL type (or vice versa), you must run the
MPROG utility and change the setup information store in the EEPROM. The utility can be
downloaded from either www.dlpdesign.com or www.ftdichip.com. The DLP-2232PB is shipped
with default VID, PID, etc. values programmed into the EEPROM. You only need to run the
MPROG utility if you want to change the default values.
TOKEN I/O
The 16F877A microcontroller on the DLP-2232PB is shipped from the factory preprogrammed
with firmware that provides rudimentary access to the port pins via either the VCP or DLL drivers.
Features include the ability to read and write individual port pins as well as 8-bit port reads and
writes.
The firmware in the DLP-2232PB also provides access to the 16F877A’s A/D converter,
EEPROM memory, and communications with digital temperature sensing devices.
Commands sent to the Token I/O firmware must adhere to a specific communications protocol.
Each command sequence contains the following information:
Byte 0:
Number of bytes in command sequence
Byte 1:
Command
Byte 2…n-1:
Parameter/Data bytes
Byte n:
Checksum
The checksum is computed by exclusive-OR-ing every byte in the string. If the same checksum
is calculated by the 16F877A upon receipt of the packet, then a single-byte reply of 0x55 is
returned to the host. In the event of a checksum error, the 16F877A will return an error code of
0xAA. For example, setting port PIN_A1 high would require the following string of bytes:
0x03, 0xA6, 0x29, 0x01, 0x8D
V1.7
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Definition of the Bytes:
0x03 – Number of bytes in command (checksum excluded)
0xA6 – Command for set port pin high/low
0x29 – Affected port pin
0x01 – Desired state of port pin
0x8D – Checksum of previous 4 bytes
The port pins equate to hexadecimal numeric constants as defined here:
PORT A:
PIN_A0 0x28, PIN_A1 0x29,
PIN_A2 0x2A,
PIN_A3 0x2B, PIN_A4 0x2C, PIN_A5 0x2D
PORT B:
PIN_B0 0x30, PIN_B1 0x31, PIN_B2 0x32, PIN_B3 0x33,
PIN_B4 0x34, PIN_B5 0x35, PIN_B6 0x36, PIN_B7 0x37
PORT C:
PIN_C0 0x38, PIN_C1 0x39, PIN_C2 0x3A, PIN_C3 0x3B,
PIN_C4 0x3C, PIN_C5 0x3D, PIN_C6 0x3E, PIN_C7 0x3F
PORT D:
PIN_D0 0x40, PIN_D1 0x41, PIN_D2 0x42, PIN_D3 0x43,
PIN_D4 0x44, PIN_D5 0x45, PIN_D6 0x46, PIN_D7 0x47
PORT E:
PIN_E0 0x48, PIN_E1 0x49, PIN_E2 0x4A, PIN_E3 0x4B,
PIN_E4 0x4C, PIN_E5 0x4D, PIN_E6 0x4E, PIN_E7 0x4F
The source code for the Token I/O firmware (developed for the CCS C compiler) is available as a
free download from DLP Design upon purchase. Example Visual C++ source code (for Windows
98/2000/XP) for communicating with the DLP-2232PB via the Token I/O firmware is also available
for download. The windows source code also contains the port pin definitions listed above.
V1.7
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TOKEN I/O COMMAND SET
0xA5 – Line In – Reads the state of a single port pin
Parameters:
Port – Select from available port pins (PIN_A3, PIN_B0, etc)
Returns:
1 Byte: State of the port pin (0 or 1)
Function:
This function will read the state of a single port pin. If the data direction for the
pin selected was set to output, the direction is first set to input.
Example:
0x2, 0xA5, 0x2B, 0x8C - Reads the current state of port pin PIN_A3.
0xA6 – Line Out - Sets a single port pin high or low
Parameters:
Port – Select from available port pins (PIN_A3, PIN_B3, etc)
State – 0 or 1
Returns:
Undefined
Function:
This function will change the output state of a single port pin. If the data direction
for the pin selected was set to input, the direction is first set to output.
Example:
0x3, 0xA6, 0x2B, 0x1, 0x8F – Sets port pin PIN_A3 high.
0xA7 – Return Board ID
Parameters:
None
Returns:
6 bytes: “2232PB”
Function:
This function will return the ID of the development board currently opened.
Example:
0x1, 0xA7, A6 – Reads the board ID.
0xA8 – Setup A/D
Parameters:
Port Configuration – Selects analog port configuration. (See command 0xA8 in
the example firmware for options.)
A/D Conversion Clock – Select the source for the A/D conversion clock. (See
command 0xA8 in the example firmware for options.)
Returns:
Undefined
Function:
This function will select the source for the A/D conversion clock. (Refer to the
datasheet for the 16F877A for a detailed explanation of the conversion clock.)
Example:
0x3, 0xA8, 0x89, 0x81, 0xA3 – Sets all available A/D inputs on the DLP-2232PB
to analog mode (0x89) and selects Fosc/32 for 20MHz operation (0x81).
V1.7
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May 2010
0xA9 – A/D Conversion
Parameters:
Analog Port Number – Selects the analog port for the A/D conversion.
Returns:
2 Bytes: The 10-bit voltage data; LSB first.
Function:
This function will set the channel for the A/D conversion, pause 10uS, perform
the A/D conversion, and then return 2 bytes to the host (LSB first). Command
0xA8 must have been previously called to configure the desired analog channel
as an A/D input.
Example:
0x2, 0xA9, 0x2, 0xA8 – Selects analog channel 2 (AN2), performs the A/D
conversion, and returns 2 bytes of data.
0xAA – EEPROM Read
Parameters:
Address – Selects the zero-based address of the location in the 16F877A’s
internal EEPROM for reading.
Returns:
1 Byte: The byte of data read from the EEPROM.
Function:
This function will read the selected location in the 16F877A’s internal EEPROM.
Example:
0x2, 0xAA, 0x2, 0xAA – Reads EEPROM Address 2, and returns a single byte of
data.
0xAB – EEPROM Write
Parameters:
Address – Selects the zero-based address of the location in the 16F877A’s
internal EEPROM for writing.
Data – Data to be written to the EEPROM.
Returns:
Undefined.
Function:
This function will write the selected location in the 16F877A’s internal EEPROM.
Example:
0x3, 0xAA, 0x2, 0xFE, 0x55 – Writes a value of 0xFE to EEPROM Address 2.
V1.7
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May 2010
0xAC – DS18S20 Start Convert
Parameters:
Port Pin – Selects the microcontroller port pin on the 16F877A to be used for
communication with the DS18S20 temperature sensor.
Returns:
1 Byte: A single byte indicating the result of trying to reset the temperature
sensor.
Sensor status definitions:
99: Sensor ready
8: Short circuit detected
2: No sensor detected
Function:
This function will select a port pin for communicating with a DS18S20
temperature sensor and start a temperature conversion. In addition to power and
ground connections, a 1.5K to 4.7K pull-up resistor must be connected between
VCC and the data pin of the DS18S20 for proper communication. The
conversion time for the DS18S20 is specified for a maximum of 750 milliseconds.
Example:
0x2, 0xAC, 0x30, 0x9E – Starts a temperature conversion on 16F877A port pin
B0.
0xAD – DS18S20 Read Data
Parameters:
Port Pin – Selects the microcontroller port pin on the 16F877A to be used for
communication with the DS18S20 temperature sensor.
Returns:
9 Bytes: The contents of the scratchpad memory in the DS18S20.
Function:
This function will select a port pin for communicating with a DS18S20
temperature sensor and request the current contents of the DS18S20’s
scratchpad memory. A conversion (command 0xAC) must have been previously
requested for the data to be current. Additionally, host software must wait at
least 750 milliseconds for the conversion to complete before reading the 9 bytes
of data. In addition to power and ground, a 1.5K to 4.7K pull-up resistor must be
connected between VCC and the data pin of the DS18S20 for proper
communications. (For an example of how to calculate .1°C resolution
temperature data from the 9 bytes of return data, refer to the example Windows
source code.)
Example:
0x2, 0xAD, 0x30, 0x9F – Requests 9 byte temperature data from 16F877A port
pin B0.
V1.7
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May 2010
0xAE – Reserved
0xAF – Loopback
Parameters:
Data byte – The byte of data to be looped back to the host.
Returns:
1 Byte: The data byte written.
Function:
This function will echo the specified byte of data back to the host. The port pins
are not affected.
Example:
0x2, 0xAF, 0x12, 0xBF – Requests the data byte 0x12 to be echoed back to the
host.
0x55 – Port A Read
0x59 – Port C Read
0x5B – Port D Read
Parameters:
None
Returns:
1 Byte: The 8-bit data read from the selected port.
Function:
This function will read the specified 8-bit port and return the results to the host.
The port is automatically configured as an input port. Port A must be configured
for digital I/O (command 0xA8) prior to using this command.
Example:
0x1, 0x5B, 0x5A – Requests a read from the 8-bit data bus Port D.
0x56 – Port A Write
0x5A – Port C Write
0x5C – Port D Write
Parameters:
Data byte – The byte of data to be written to the 8-bit port.
Returns:
Undefined
Function:
This function will write the specified data byte to the 8-pit port. Data is latched on
the port pins until changed by another command. The port is automatically
configured as an output port. Port A must be configured for digital I/O (command
0xA8) prior to using this command.
Example:
V1.7
0x2, 0x5C, 0x12, 0xBF – Writes the data byte 0x12 to the 8-bit data bus Port D.
Page 11 of 15
May 2010
TABLE 1: DLP-2232PB PINOUT DESCRIPTION
Pin #
25
1
26
50
Description
1
GROUND
2
B5 (I/O) Port Pin B5 connected to the 16F877A microcontroller.
3
UPRST (In) 16F877A Reset input. Can be left disconnected if not used.
4
A0 (I/O) Port Pin A0 connected to the 16F877A microcontroller. A/D Channel 0.
5
A1 (I/O) Port Pin A1 connected to the 16F877A microcontroller. A/D Channel 1.
6
A2 (I/O) Port Pin A2 connected to the 16F877A microcontroller. A/D Channel 2.
7
A3 (I/O) Port Pin A3 connected to the 16F877A microcontroller. A/D Channel 3.
8
A4 (I/O) Port Pin A4 connected to the 16F877A microcontroller. Open drain output.
9
A5 (I/O) Port Pin A5 connected to the 16F877A microcontroller. A/D Channel 4.
10
LED (I/O) Port Pin E0 connected to the 16F877A microcontroller. The on-board LED can be driven
by 16F877A microcontroller or by external user electronics if E0 is configured as an input.
11
GROUND
12
NO CONNECT
13
NO CONNECT
14
NO CONNECT
15
DB7 (I/O) Line 7 of the data bus between the 16F877A and the FT2232D USB-FIFO.
16
DB6 (I/O) Line 6 of the data bus between the 16F877A and the FT2232D USB-FIFO.
17
DB5 (I/O) Line 5 of the data bus between the 16F877A and the FT2232D USB-FIFO.
18
DB4 (I/O) Line 4 of the data bus between the 16F877A and the FT2232D USB-FIFO.
19
DB3 (I/O) Line 3 of the data bus between the 16F877A and the FT2232D USB-FIFO.
20
DB2 (I/O) Line 2 of the data bus between the 16F877A and the FT2232D USB-FIFO.
21
DB1 (I/O) Line 1 of the data bus between the 16F877A and the FT2232D USB-FIFO.
22
DB0 (I/O) Line 0 of the data bus between the 16F877A and the FT2232D USB-FIFO.
23
EXTVCC (In) Use for applying main power (4.4 to 5.25 volts) to the module. Connect to
V1.7
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May 2010
PORTVCC if the module is to be powered by the USB port (typical configuration).
24
PORTVCC (Out) Power from USB port. Connect to EXTVCC if module is to be powered by the
USB port (typical configuration). 500mA is the maximum current available to the DLP-2232PB and
target electronics if the USB device is configured for high power.
25
GROUND
26
GROUND
27
VCCUSB (Out) Filtered power applied to pin 23.
28
SWVCC (Out) Power from EXTVCC (Pin 23) controlled via PWREN of the FT2232D and Q2
MOSFET power switch. R5 and C9 control the power-up rate to help limit inrush current.
29
AC3 (I/O) Port Pin AC3 connected to the FT2232D USB IC.
30
AC2 (I/O) Port Pin AC2 connected to the FT2232D USB IC.
31
AC1 (I/O) Port Pin AC1 connected to the FT2232D USB IC.
32
AC0 (I/O) Port Pin AC0 connected to the FT2232D USB IC.
33
NO CONNECT
34
NO CONNECT
35
NO CONNECT
36
NO CONNECT
37
NO CONNECT
38
NO CONNECT
39
NO CONNECT
40
GROUND
41
C0 (I/O) Port Pin C0 connected to the 16F877A microcontroller.
42
C1 (I/O) Port Pin C1 connected to the 16F877A microcontroller.
43
C2 (I/O) Port Pin C2 connected to the 16F877A microcontroller.
44
C3 (I/O) Port Pin C3 connected to the 16F877A microcontroller.
45
C4 (I/O) Port Pin C4 connected to the 16F877A microcontroller.
46
C5 (I/O) Port Pin C5 connected to the 16F877A microcontroller.
47
C6 (I/O) Port Pin C6 connected to the 16F877A microcontroller.
48
C7 (I/O) Port Pin C7 connected to the 16F877A microcontroller.
49
B0 (I/O) Port Pin B0 connected to the 16F877A microcontroller.
50
GROUND
V1.7
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May 2010
Mechanical Dimensions
Inches (mm)
DLP-2232PB
20.000
C
32
22
FT
2.8 typ
(71.1 typ)
6.000
.10 typ
(2.54 typ)
.29 typ
(7.4 typ)
.65 typ
(16.5 typ)
.50 typ
(12.7 typ)
.29 typ
(7.4 typ)
.52 typ dia
(13.2 typ)
.019 typ dia
(.46 typ)
.16 typ
(4.2 typ)
V1.7
.9 typ
(22.9 typ)
1.0 typ
(25.4 typ)
Page 14 of 15
.29 typ
(7.3 typ)
May 2010
DISCLAIMER
Neither the whole nor any part of the information contained within or the product described in this
datasheet may be adapted or reproduced in any material or electronic form without the prior
written consent of the copyright holder.
This product and its documentation are supplied on an as-is basis, and no warranty as to their
suitability for any particular purpose is either made or implied. DLP Design will not accept any
claim for damages whatsoever arising as a result of use or failure of this product. Your statutory
rights are not affected.
This product or any variant of it is not intended for use in any medical appliance, device, or
system in which the failure of the product might reasonably be expected to result in personal
injury.
This document provides information that may be subject to change without notice.
CONTACT INFORMATION
DLP Design, Inc.
1605 Roma Ln.
Allen, TX 75013
Phone: 469-964-8027
Fax:
415-901-4859
Email: support@dlpdesign.com
Internet: http://www.dlpdesign.com
V1.7
Page 15 of 15
May 2010
D
C
B
A
5
1
FB3
2
C2
.1uF
C16
.033uF
Y2
6MHz
C14
47pF
1.5K
VCCUSB
EECS
EESK
EEDATA
C34
10uF
VCCUSB
C7
.1uF
6
8
7
5
43
44
4
1
48
2
47
U2
4
FB4
FB
R4
470
3V3OUT
USBDM
USBDP
RSTOUT#
XTIN
XTOUT
RESET#
EECS
EESK
EEDATA
TEST
FT2232
C3
.1uF
C4
.033uF
C5
.01uF
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AC0
AC1
AC2
AC3
SI/WUA
BD0
BD1
BD2
BD3
BD4
BD5
BD6
BD7
BC0
BC1
BC2
BC3
SI/WUB
PWREN
Q2
3
C9
.1uF
IRLML6402
C6
SWVCC
.1uF
27
27
UPRST
C8
R14
R13
.1uF
24
23
22
21
20
19
17
16
15
13
12
11
10
40
39
38
37
36
35
33
32
30
29
28
27
26
41
R5
2.2K
C10
.1uF
-->
SWVCC
C33
10uF
B6 (CLK)
R12
10K
1
2
3
4
5
JP1
GND
B5
UPRST
A0
A1
A2
A3
A4
A5
LED
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
2
SWVCC
R9
360
LED
SI/WUB
TXE#
C0
C1
C2
C3
C4
C5
C6
C7
B0
RD#
WR
RXF#
B5
SWVCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
JP2
CONN PCB 25x2
Debugger Header (DNS)
General
Purpose
I/O
1=Program
B7 (DTA) <-->
0=run
AC0
AC1
AC2
AC3
BD0
BD1
BD2
BD3
BD4
BD5
BD6
BD7
RXF#
TXE#
RD#
WR
SI/WUB
DLP-2232PB MODULE
BD7
BD6
BD5
BD4
BD3
BD2
BD1
BD0
EXTVCC
PORTVCC
GND
2
LED
LED1
25
26
27
32
35
36
37
42
43
44
1
8
9
10
11
14
15
16
17
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
AC0
AC1
AC2
AC3
SWVCC
VCCUSB
GND
GND
B0
C7
C6
C5
C4
C3
C2
C1
C0
GND
UPRST
C20
.1uF
U1
R10
1K
38
39
40
41
2
3
4
5
19
20
21
22
23
24
30
31
18
C19
.1uF
R8
1K
BD0
BD1
BD2
BD3
BD4
BD5
BD6
BD7
A0
A1
A2
A3
A4
A5
1
Q3
2N3904
1
2N3904
Q4
Y1
20MHz
PIC16F877A TQFP
D0
D1
D2
E0/AN5
E1
D3
D4
E2
D5
RC0
D6
RC1
D7
RC2
RA0/AN0
RC3
RA1/AN1
RC4
RC5
RA2/AN2/VREF
RC6
RA3/AN3/VREF+
RC7
RA4/TOCKI
RB0/INT
RA5/AN4/SS*
RB1
OSC1/CLKIN
RB2
RB3/PGM OSC2/CLKOUT
RB4/INT
RB5/INT
RB6/PGC
RB7/PGD
MCLR
28
7
EXTVCC
C1
.01uF
R2
27
R3
18pF
18pF
1
2
3
4
2.2K
16 Digital I/O to uP -Plus- 8-bit Data bus (24 total)
3
VDD
VDD
Vss
Vss
2
1
^
|
2 of which are interrupt input
5 of which are analog input
4 General Purpose I/O from FT2232C
4
13
12
34
33
PORTVCC
R1
27
C11
C12
CS
SK
DIN
DOUT
R6
14
31
CN1
CN-USB
1
2
3
4
U3
93C56
VCC
NC
NC
GND
10K
VCCIOA
VCCIOB
C15
.47uF
C13
47pF
** DNS **
VCCUSB
8
7
6
5
R7
5
3
42
NC
NC
NC
NC
29
6
46
GND
GND
GND
GND
VCC
VCC
AGND
9
18
25
34
AVCC
45
5
R11
10K
C17
18pF
C18
18pF
SWVCC
D
C
B
A