Introduction
1-4
AT89RFD-08 Hardware User Guide
4382E–MP3–05/06
Figure 1-4.
AT89RFD-08 Evaluation with PC
Note:
PC software
at89rfd-08-MyCom-X_X.exe
is available to control AT89RFD-08. Refer to
firmware package readme.txt file.
1.2
AT89RFD-08
Reference
Design Features
The AT89RFD-08 Board provides the following features:
n AT89C51SND2C CTBGA device (3V)
n Power supply flagged by “POWER” LED:
– regulated 3V
– direct powering from external connector
n ISP connector for on-chip ISP
n Serial interfaces:
– 1 RS-232 port
– 1 SPI port
– 1 TWI port
– 1 USB port
n On-board resources:
– 1 earphone 32 Ohms output (jack connector)
– 1 speaker 8 Ohms output (jack connector)
– 1 SD/MMC card connector
– 2-button keyboard
– 2 LEDs
n On-board RESET button
n On-board INT0 button
n System clock:
– 16 MHz crystal
n Expansion connector
RS232 Link
AT89RFD-08
PC
RS232 Level
-12/+12V - 3V
Shifter