FUJITSU MHZ2250BJ - Manual (Page 83)

5.1 Physical Interface
Table 5.2 Requirements for P11 as an output pin
Asserted Deasserted
V
ACT
≤ 0.7V ≥ 0.7V
I
ACT
- +50uA
Figure 5.2 Example of the circuit for driving Activity LED
C141-E280 5-9