12

6308A–DRMSD–10-May-07

ATSAM2195

Notes:

1. When data is pending on parallel port, the host should read it within 1 ms. If not, the parallel port is deactivated. Reactivating

the port can be done with the following control sequence: 0FFh (Closed port), 03FFh (Open port).

2. For safe operation, write cycle time should not be lower than 3.5 µs.

Chip select low to WR low

5

--ns

WR high to CS high

t

WRHCSH

5

--ns

WR pulse width

t

PWR

50

--ns

Write data setup time

10

--ns

Write data hold time

t

DWH

0

--ns

Write cycle

3.5

µs

Table 6-1.

Timings