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CD-AT98

State-of-the Art Evaluation Module for 8, 20 & 40-pin Microcontrollers

Unspecified 

User Manual V2.00 Evalu8r

Device Support Continued

Atmel 8-pin AVR microcontrollers

Device

Family

AT90S2323

AT90S2343

Microcontroller

Socket

U4

U4

Number

Of Pins

8

8

RESET Configuration

Polarity Link 3

Link 4

LOW

2-3

2-3

LOW

2-3

2-3

Figure 20

ISP

YES

YES

The Evalu8r module supports the Atmel

8-pin AVR devices. As there are many different

modes in which these devices can be used,

each pin of the 8-pin socket (U4) has been

brought out to a jumper.

The 8-pin AVR table (figure 24) shows how to

configure the jumpers so that the AT90S2323

can be operated from an external crystal and

also in-system programmed.

Pin Function

1 RESET Pin

2

XTAL 1

3

XTAL 2

4 GROUND

5

P1.1

6

P1.6

7

P1.7

8

Vcc

Link

12

7

8

9

10

-

11

-

Jumper

1-2

1-2

1-2

1-2

2-3

-

2-3

-

AT90S2323 Scenario

Vcc

Active

LOW RESET

Circuit

(Refer to page 12)

1

RESET

C6

8

Vcc

Figure 23

RESET 1

(XTAL1) PB3 2

(XTAL2) PB4 3

GND 4

Figure 21

8 VCC

7 PB2 (SCK/T0)

6 PB1 (MISO/INT0)

5 PB0 (MOSI)

Pinout for the AT90S2323

• Configuration with external

Crystal Oscillator

External

RESET

Signal

AT90S2323

8-Pin

Microcontroller

2

XTAL1

XT1

3

XTAL2

C1

C2

GND

4

PB (3 I/O)

• 3 I/O lines are available

Port I/O Function

PB 3 Spare I/O

PB2 Con 3 Link 11

PB3 LED6

PB0 Con 3 Link 10

Figure 24

Figure 22

9

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