Moteur de recherche de fiches techniques de composants électroniques
Selected language     French  ▼
Nom de la pièce
         Description


M25PE80 Datasheet(Fiches technique) 12 Page - STMicroelectronics

Numéro de pièce M25PE80
Description  8 Mbit, low-voltage, Page-Erasable Serial Flash memory with Byte alterability, 50MHz SPI bus, standard pinout
Télécharger  61 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo 

 12 page
background image
Operating features
M25PE80
12/61
4
Operating features
4.1
Sharing the overhead of modifying data
To write or program one (or more) data Bytes, two instructions are required: Write Enable
(WREN), which is one Byte, and a Page Write (PW) or Page Program (PP) sequence, which
consists of four Bytes plus data. This is followed by the internal cycle (of duration tPW or tPP).
To share this overhead, the Page Write (PW) or Page Program (PP) instruction allows up to
256 Bytes to be programmed (changing bits from 1 to 0) or written (changing bits to 0 or 1)
at a time, provided that they lie in consecutive addresses on the same page of memory.
4.2
An easy way to modify data
The Page Write (PW) instruction provides a convenient way of modifying data (up to 256
contiguous Bytes at a time), and simply requires the start address, and the new data in the
instruction sequence.
The Page Write (PW) instruction is entered by driving Chip Select (S) Low, and then
transmitting the instruction Byte, three address Bytes (A23-A0) and at least one data Byte,
and then driving Chip Select (S) High. While Chip Select (S) is being held Low, the data
Bytes are written to the data buffer, starting at the address given in the third address Byte
(A7-A0). When Chip Select (S) is driven High, the Write cycle starts. The remaining,
unchanged, Bytes of the data buffer are automatically loaded with the values of the
corresponding Bytes of the addressed memory page. The addressed memory page then
automatically put into an Erase cycle. Finally, the addressed memory page is programmed
with the contents of the data buffer.
All of this buffer management is handled internally, and is transparent to the user. The user
is given the facility of being able to alter the contents of the memory on a Byte-by-Byte basis.
For optimized timings, it is recommended to use the Page Write (PW) instruction to write all
consecutive targeted Bytes in a single sequence versus using several Page Write (PW)
sequences with each containing only a few Bytes (see Page Write (PW) section and
Table 21: AC characteristics).




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 


Datasheet Download



Numéro de composants électroniques

Numéro de pièceDescription des composantsHtml ViewFabricant
NX25F011B1M-BIT 2M-BIT AND 4M-BIT SERIAL FLASH MEMORIES WITH 4-PIN SPI INTERFACE 1 2 3 4 5 MoreList of Unclassifed Manufacturers
LU6000F016-Bit Single-Chip Microcomputers With Built-In Flash Memory 1 2 3 Sharp Electrionic Components
SDA2546-5Nonvolatile Memory 4-Kbit E2PROM with I2C Bus Interface 1 2 3 4 5 MoreSiemens Semiconductor Group
LH28F640BFHG-PBTLZ764M x16 Flash Memory 1 2 3 4 5 MoreSharp Electrionic Components
PI5C3286110-Bit 2-Port Bus Switch with 25ohm Series Resistor 1 2 3 Pericom Semiconductor Corporation
MTV212M328051 Embedded Monitor Controller Flash Type with ISP 1 2 3 4 5 MoreList of Unclassifed Manufacturers
HD404669Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit 1 2 3 4 5 MoreHitachi Semiconductor
MC33298Eight Output Switch with Serial Peripheral Interface I/O 1 2 3 4 5 MoreFreescale Semiconductor, Inc
LPC2378Single-chip 16-bit/32-bit microcontrollers; 512 kB flash with ISP/IAP Ethernet USB 2.0 CAN and 10-bit ADC/DAC 1 2 3 4 5 MoreNXP Semiconductors
908E626Integrated Stepper Motor Driver with Embedded MCU and LIN Serial Communication 1 2 3 4 5 MoreFreescale Semiconductor, Inc

Lien URL

AllDATASHEET vous a-t-il été utile ?   [ DONATE ]  

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Favoris   |   Echange de liens   |   Fabricants
All Rights Reserved © Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl