DM163025 Microchip Technology, DM163025 Datasheet - Page 16

• Manufacturer Part Number: DM163025
• Description: PIC DEM FULL SPEED USB DEMO BRD
• Manufacturer: Microchip Technology

Specifications of DM163025

• Main Purpose: Interface, USB 2.0 Host/Controller
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: PIC18F2455/2550/4455/4550
• Primary Attributes: Full Speed (12Mbps)
• Secondary Attributes: MPLAB ICE 2000/4000 Emulator Interface, Temp Sensor, Expansion and PICtail Headers
• Processor To Be Evaluated: PIC18F4550
• Interface Type: RS-232, USB
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Core Number: PIC18F
• Silicon Family Name: PIC18F4xxx
• Kit Contents: Demo Board, Cables, CD & Documents
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: Q2086254

1.5
DS51526B-page 12
DEMO TOOL APPLICATION SOFTWARE
™
1.4.4
The PICDEM FS USB board fully supports RS-232 serial communications, including
hardware flow control (RTS/CTS signalling) generated by pins RA2 and RA3 of the
microcontroller. One RS-232 female connector and all supporting circuitry are included.
1.4.5
There are four firmware-controllable LEDs, D1 through D4. An LED is turned on when
the corresponding port bit has the value of ‘1’, and off when the port bit is ‘0’.
The PICDEM FS USB demo board comes preprogrammed with firmware which uses
LEDs, D1 and D2, to indicate the current USB device state. Table 1-2 summarizes the
LED values in relation to different USB device states. The meaning of each of the USB
device states can be found in Chapter 9 of the USB Specification.
TABLE 1-2:
Included with the demonstration board is the USB Demo Tool software. This simple
graphic interface allows users to monitor and control simple board features, and
provides the ability to reprogram the PIC18F4550 controller via a bootloader
demonstration.
The overall operation of the host software is discussed in Chapter 3. “Using the Demo
Tool Application”.
Note:
USB Device State
Suspended
Configured
Addressed
Detached
Attached
Powered
RS-232 Interface
Status LEDs
In bus-powered applications, flashing D1 and D2 in Suspended mode is not
recommended; the current draw is likely to exceed the limits specified in the
USB Specification. It is implemented in the original firmware for the
demonstration board for demonstration purposes only.
Default
USB DEVICE STATE LED STATUS
LED D1
Blink
Off
On
On
Off
Fast Synchronous Flashing
Alternate Flashing
© 2008 Microchip Technology Inc.
LED D2
Off
On
Off
On
Off