User Manual

Electrical Characteristics

December 2007 Revision 3.5 43/48

13.6 I/O Electrical and Timing Characteristics

Parameters Conditions Min. Typ. Max. Unit Comments

I/Ox input voltage low 0 0.8 V

I/Ox input voltage high 2 V

I/Ox input current 1 µA

I/Ox output voltage low V

I/Ox output voltage high V

I/Ox output current mA

Sunk or

sourced

I/Ox output capacitance pF

tCV (time to change value)

End of reception on

RX to I/Ox level

changed

35 40 µs

tGV (time to get value)

End of reception on

RX to I/Ox level

read

33 38 µs

tFR (time to fall or rise) Fall/rise time 10 25 ns

Figure 24: I/O DC Characteristics and Timing

RX_RS232

IOx

Output

IOx

Input