AT89C2051 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

AT89C2051

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

Unspecified 

User Manual V2.00 Evalu8r

Device Support Continued

Atmel 40-pin AVR microcontrollers

Device

Microcontroller Number

RESET Configuration

Family

Socket

Of Pins Polarity Link 3

Link 4

ISP

AT90S4414

U2

AT90S8515

U2

40

LOW

2-3

2-3

YES

40

LOW

2-3

2-3

YES

Figure 12

Active

LOW RESET

Circuit

(Refer to page 12)

External

RESET

Signal

XT1

C1

C2

Vcc

C6

9

RESET

40

Vcc

AVR 40-Pin

Microcontroller

18

XTAL1

19

XTAL2

GND

20

Figure 14

PA (8 I/O)

PB (8 I/O)

PC (8 I/O)

(T0) PB0 1

(T1) PB1 2

(AIN0) PB2 3

(AIN1) PB3 4

(SS) PB4 5

(MOSI) PB5 6

(MISO) PB6 7

(SCK) PB7 8

RESET 9

(RXD) PD0 10

(TXD) PD1 11

(INT0) PD2 12

(INT1) PD3 13

PD4 14

(OC1A) PD5 15

(WR) PD6 16

(RD) PD7 17

XTAL2 18

XTAL1 19

GND 20

40 VCC

39 PA0 (AD0)

38 PA1 (AD1)

37 PA2 (AD2)

36 PA3(AD3)

35 PA4 (AD4)

34 PA5 (AD5)

33 PA6 (AD6)

32 PA7 (AD7)

31 ICP

30 ALE

29 OC1B

28 PC7 (A15)

27 PC6 (A14)

26 PC5 (A13)

25 PC4 (A12)

24 PC3 (A11)

23 PC2 (A10)

22 PC1 (A9)

21 PC0 (A8)

PD (8 I/O)

Pinout for the AT90S8515

and AT90S4414

Figure 15

Figure 13

Port I/O Function

PA.X 8 I/O Box Header (Con 11)

PB.X 8 LED x 8 + ISP (3)

PC.X 8 I/O Box Header (Con 9)

PD.X 8 Push Button + Serial Communications

PLEASE NOTE: The Evalu8r module does not support the Atmel AT90S8535 and AT90S4434

40-pin AVR devices

ICP, ALE and 0C1B are brought out to Con10

7

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