User's Manual

1.0 Description
The AES Model 7880-B UHF Data Transceiver permits data to be transmitted in
the 450 ~ 470 MHz band of frequencies. The maximum output power is 120 mW. The
data rate can be in the range of 2400 ~ 9600 baud. The 7880-B interfaces with an
embedded microprocessor using a simple 4-wire serial Programming Port. The operating
parameters are set by AES approved software.
B2.0 Signals
The 7880-B has 20 pins, consisting of 2 rows of 10 pins each. The following
diagram (bottom view) shows the pin numbering scheme:
The following table lists the signal pins and their function:
Pin Name Function
19 PSEL Select Programming Port (active low)
18 PCLK Serial Clock for Programming Port
17 PDI Data Input for Programing Port
16 PDO Data Output from Programming Port
2 DCLK Data Clock for Synchronous Data
3 DIO Data Input/Output for Synchronous Data
5 VCC Power (+5 volts, 200 mA max)
1 GND Ground
8 “
10 “
11 “
13 “
Pin 1
Pin 20