5

ATFS05/10/40

3017C–FPSLI–07/02

Example Circuits

Figure 1. FPSLIC Support Device for Programming FPSLIC Devices

The FPSLIC’s bi-directional CON pin drives the CE input of the FPSLIC Support Device, while the RESET/OE input is

driven by the FPSLIC’s bi-directional INIT pin. This connection works under all normal circumstances, even when the user

aborts the configuration before CON has gone High. A Low level on the RESET/OE input, during FPSLIC reset, clears the

FPSLIC Support Device’s internal address pointer so that the reconfiguration starts at the beginning.

The spare memory can be accessed by in-system programming the ATFS through a two-wire serial interface built in the

FPSLIC device. For more information, refer to the “C Code for Interfacing the FPSLIC AVR Core to AT17 Series Configura-

tion Memories” application note, available on the Atmel web site (www.atmel.com).

Figure 2. In-System Programming of FPSLIC Support Devices

DATA0

CCLK

CON

INIT

FPSLIC Support Device

SER_EN

DATA

CLK

CE

RESET/OE

RESET

AT94K

GND

RESET

M2

M1

M0

V

2

4

6

8

10

5

7

9

SER_EN

4.7 k

9

4.7 k

9

GND

FPSLIC Support Device

AT94K

DATA0

CCLK

CON

INIT

SER_EN

DATA

CLK

CE

RESET/OE

RESET

GND

RESET

M2

M1

M0