FT120T-R datasheet(7/40 Pages) FTDI

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Document No.: FT_000646

FT120 USB DEVICE CONTROLLER WITH PARALLEL BUS IC

Datasheet Version 1.2

Clearance No.: FTDI#

291

3.3 Pin Description

PIN No.

(TSSOP-

28)

PIN No.

(QFN-

28)

PIN NAME

TYPE

DESCRIPTION

DATA0

Data bus bit 0.

DATA1

Data bus bit 1.

DATA2

Data bus bit 2.

DATA3

Data bus bit 3.

GND

Ground.

DATA4

Data bus bit 4.

DATA5

Data bus bit 5.

DATA6

Data bus bit 6.

DATA7

Data bus bit 7.

ALE

Address latch enable for multiplexed address/data

bus configuration.

This pin must be pulled Low for non-multiplexed

address/data bus configuration.

CS_n

Chip select (Active Low).

SUSPEND

I,OD

Device suspend (output) and wakeup (input).

CLKOUT

Programmable output clock.

INT_n

Interrupt (Active Low).

RD_n

Read enable (Active Low).

WR_n

Write enable (Active Low).

DMREQ

DMA request.

DMACK_n

DMA acknowledge (Active Low).

EOT_n

End of DMA transfer (Active Low). Also function

as Vbus sensing input for self-powered

application. _n_n_n_n

RESET_n

Asynchronous reset (Active Low).

GL_n

USB bus activity indicator (Active Low)

OSCI

Crystal connection input (6MHz); alternatively, a

1.8V square wave clock can be applied.

OSCO

Crystal connection output (6MHz) ; if the external

clock signal is connected to OSCI, then OSCO

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