FT801 datasheet(33/57 Pages) FTDI

Part #	FT801

Description	The FT801 is an easy to use graphic controller targeted for embedded applications to generate high-quality Human Machine Interfaces (HMIs). It has the following features

PDF	57 Pages

Scroll/Zoom	100%

Manufacturer	FTDI [Future Technology Devices International Ltd.]

Direct Link	http://www.ftdichip.com

Logo

33 / 57 page

Document No.: FT_000986

FT801

Embedded Video Engine

Datasheet Version 1.0

Clearance No.:

FTDI#376

4.8.3 Power Modes

When supply to VCCIO and VCC is applied, internal 1.2V regulator is powered by VCC. An

internal POR pulse will be generated during the regulator power up until it is stable. After the

initial power up, the FT801 will stay in STANDBY state. When needed, host can set FT801 to

ACTIVE state by performing a dummy read to address 0. The graphics engine, the audio

engine and the touch engine are only functional in ACTIVE state. To save power host can send

command to put FT801 into any of the low power mode: STANDBY, SLEEP and POWERDOWN.

In addition, host is allowed to put FT801 in POWERDOWN mode by drive PD_N pin to low,

regardless what current state it is in. Refer to Figure 4-9 for the power state transitions.

Figure 4-9 Power State Transition

POWERDOWN

STANDBY

SLEEP

VCC/VCCIO

Power ON

Toggle PD_N from high

to low

ACTIVE

Toggle PD_N from low

to high

Toggle PD_N from high

to low

Toggle PD_N from high to low or

Write

command “POWERDOWN”

Write command “SLEEP”

Write command

“STANDBY”

Dummy Read “0”

FT801 Datasheet(PDF) 33 Page - Future Technology Devices International Ltd.