Digilent 410-103P-KIT Bedienungsanleitung PDF herunterladen

™

www.digilentinc.com

Revision: September 26, 2006

215 E Main Suite D | Pullman, WA 99163

(509) 334 6306 Voice and Fax

Doc: 502-103 page 1 of 2

Figure 1

Digilent PmodSF

Overview

The Digilent PmodSF is a Digilent Pmod

peripheral module that provides 16Mbit

(2Mbyte) of flash ROM memory. This memory

is accessed through an SPI (Serial Peripheral

Interface) compatible serial interface. This

module provides easily accessible non-volatile

memory storage for various Digilent

programmable logic and embedded control

system boards.

Features include:

• ST Microelectronics M25P16 serial

flash ROM integrated circuit

• a 6-pin header Pmod interface

connector

• more than 20 year data retention

• very low power consumption

• small form factor (0.80” x 1.00”).

Functional Description

The flash memory on the PmodSF is provided

by an ST Microelectronics M25P16 integrated

circuit. This memory is organized as 32 sectors

of 65536 (64K) bytes each. Each sector is

organized as 256 pages of 256 bytes each.

Flash memory must be erased before new

data can be written. The M25P16 allows for a

bulk erase, to erase the entire memory, or

individual sectors may be erased

independently. After a sector has been erased,

individual bytes within the sector can be written

or complete pages may be written as a single

write operation.

Flash memory will eventually wear out after

many erase reprogram cycles. The M25P16

supports more than 100,000 erase/program

cycles per sector before the memory wears

out. Normally flash memory wear-out is not an

issue in routine operation. However, be aware

that bugs in the control software may

inadvertently cause many erase/program

cycles to happen quickly. This could result in

premature wear-out of the memory.

Sending commands and data to the module via

the SPI interface accesses the flash memory

on the PmodSF.

The SPI interface standard uses four signal

lines. These are SS, slave select; MOSI,

master out slave in; MISO, master in slave out;

Serial

Flash

ROM

M25P16

1 SS S

J1 Connector

2 MOSI D

3 MISO Q

4 SCK C

5 GND

6 VCC

Figure 2

Block Diagram

1 2

Overview 1
Functional Description 1

Inhaltsverzeichnis

Seite 1 - Functional Description

DDiiggiilleenntt PPmmooddSSFF™™ 1166MMbbiitt SSPPII SSeerriiaall FFllaasshh MMeemmoorryy MMoodduullee RReeffeerreennccee MMaannuuaall ®www.

Seite 2

Document Title Digilent Confidential Digilent, Inc. www.digilentinc.com Copyright Digilent, Inc. Page 2 and SCK, serial clock. These signals map

Kommentare zu diesen Handbüchern

Keine Kommentare

Digilent 410-103P-KIT Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Hardware Digilent 410-103P-KIT herunter. Digilent 410-103P-KIT User Manual Benutzerhandbuch

Inhaltsverzeichnis

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Hardware Digilent 410-103P-KIT