Data Sheet

SMT
Pin
Plugga
ble Pin
Ty
pe
Signal
Name
Functions
20
13
GIO_5
Reserved for future
use. Do not connect.
21
4
GIO_6
Reserved for future
use. Do not connect.
22
20
I
GIO_7
Analog to Digital
input
Tips:
▪ All I/O directions are referenced to Vcc.
▪ All inputs are weakly pulled High via a 20 k Ohm pull-up resistor and may be left floating
during normal operation.
▪ Minimum connections: VCC, VPA, GND, TXD, and RXD.
▪ Signal direction is with respect to the transceiver.
▪ Leave unused pins disconnected.
Input Characteristics
Table 3: Input characteristics
Signal Name
High Min.
High Max.
Low Min.
Low Max.
µP_Reset
0.8 v
Vcc
0 v
0.6 v
RTS
2.31 v
Vcc
0 v
.99 v
AD_In
N/A
Vcc
0 v
N/A
All other inputs
70% Vcc
Vcc
0 v
30% Vcc
Output Characteristics
Table 4: Output characteristics
Signal Name
High Min.
High Max.
Low Min.
Low Max.
Sink Current
GO_0
2.5 v
3.3 v
0 v
0.4 v
20 mA
GO_1
2.5 v
3.3 v
0 v
0.4 v
20 mA
PWM_Output
N/A
3.3 v
0 v
N/A
4 mA
All other outputs
2.5 v
3.3 v
0 v
0.4 v
4 mA