20

4256B–USB–03/06

AT89C5132

Second Request from

Host

The Host sends a DFU Upload request.

Answers from the

Device

The device send to the Host the firmware from the specified start address to the end address.

Answers from the

Device to a Blank Check

Command

The Host controller send a GET_STATUS request to the device. Once internal blank check has

been completed, the device sends its status.

•

If the device status is “OK”:

the device memory is then blank and the device waits the next Host request.

•

the device memory is not blank. The device waits for an DFU_UPLOAD request to send the

first address where the byte is not 0xFF.

Command Identifier

data[0]

data[1]

data[2]

data[3]

data[4]

Description

Id_display_data

03h

00h

start_address

end_address

Display Flash Data

01h

Blank Check in Flash

IN

Firmware Packet 1

IN

Firmware Packet 2

IN

Firmware Packet n

OUT

ZLP

SETUP

DFU_UPLOAD