14

ATSAM3303

6091A–DRMSD–07/04

Peripherals and Timings

Slave 8-bit Parallel

Interface

Pins used: D7-D0 (I/O), CS (input), A0 (input), WR (input), RD (input), IRQ (output).

This interface is typically used to connect the chip to a host processor.

Figure 5. Host Interface Read Cycle

Figure 6. Host Interface Write Cycle

Table 7. Timing Parameters

Symbol

Parameter

Min

Typ

Max

Unit

t

AVCS

Address valid to chip select low

0

-

-

ns

t

CSLRDL

Chip select low to RD low

5

-

-

ns

t

RDHCSH

RD high to CS high

5

-

-

ns

t

PRD

RD pulse width

50

-

-

ns

t

RDLDV

Data out valid from RD

-

-

20

ns

t

DRH

Data out hold from RD

5

-

10

ns

t

CSLRWRL

Chip select low to WR low

5

-

-

ns

t

WRHCSH

WR high to CS high

5

-

-

ns

t

PWR

WR pulse width

50

-

-

ns

t

DWS

Write data setup time

10

-

-

ns

t

DWH

Write data hold time

0

-

-

ns

A0

D0 - D7

CS

RD

A0

D0 - D7

CS

WR