DOC1925 datasheet(16/61 Pages) ETC1

16 / 61 page

Hardware Description

3-6

AVR STK500 User Guide

1925C–AVR–3/03

3.6

Description of

DataFlash Pins

NB! Not valid: AT45D021 2-Mbit DataFlash is included on the STK500 for data storage.

A DataFlash is a high-density Flash memory with SPI serial interface. A detailed

datasheet of the DataFlash can be obtained from the Flash memory section of the Atmel

CD-ROM or from the Atmel web site.

The DataFlash can be connected to the I/O pins of the microcontroller sockets. The

4-pin header marked “DATAFLASH” can be used for connecting the SPI interface of the

DataFlash to the I/O pins on the target AVR microcontroller in the socket. 2-wire cables

are included with STK500 for connecting the DataFlash to the I/O pins. The supplied

10-wire cables can also be used if the DataFlash is connected to the hardware SPI inter-

face on PORTB of the AVR microcontroller. The connection of the I/O pins is shown in

Figure 3-13. The block schematic of the DataFlash connection is shown in Figure 3-14,

for connection of the DataFlash to the AVR hardware SPI interface. The SPI interface

pinout is shown in Figure 3-11 and Figure 3-12.

Figure 3-11. PORTB SPI Pinout (40-pin Parts)

Figure 3-12. PORTB SPI Pinout (28-pin Analog Parts)

PB1

PB3

PB5(MOSI)

PB7(SCK)

VTG

PB0

PB2

(SS)PB4

(MISO)PB6

GND

1 2

PB1

PB3(MOSI)

PB5(SCK)

PB7

VTG

PB0

(SS)PB2

(MISO)PB4

PB6

GND

1 2

DOC1925 数据表(PDF) 16 Page - List of Unclassifed Manufacturers

DOC1925 数据表(HTML) 16 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

数据表下载