Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

FM25CL04-S Scheda tecnica(PDF) 7 Page - List of Unclassifed Manufacturers

Il numero della parte FM25CL04-S
Spiegazioni elettronici  4Kb FRAM Serial 3V Memory
Download  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  ETC [List of Unclassifed Manufacturers]
Homepage  
Logo ETC - List of Unclassifed Manufacturers

FM25CL04-S Scheda tecnica(HTML) 7 Page - List of Unclassifed Manufacturers

Back Button FM25CL04-S Datasheet HTML 3Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 4Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 5Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 6Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 7Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 8Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 9Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 10Page - List of Unclassifed Manufacturers FM25CL04-S Datasheet HTML 11Page - List of Unclassifed Manufacturers  
Zoom Inzoom in Zoom Outzoom out
 7 / 11 page
background image
FM25CL04
Rev. 1.0
July 2003
Page 7 of 11
Table 4. Write Protection
WEL
/WP
Protected Blocks
Unprotected Blocks
Status Register
0
X
Protected
Protected
Protected
1
0
Protected
Protected
Protected
1
1
Protected
Unprotected
Unprotected
Memory Operation
The SPI interface, which is capable of a relatively
high clock frequency, highlights the fast write
capability of the FRAM technology. Unlike SPI-bus
EEPROMs, the FM25CL04 can perform sequential
writes at bus speed. No page register is needed and
any number of sequential writes may be performed.
Write Operation
All writes to the memory array begin with a WREN
op-code. The next op-code is the WRITE instruction.
This op-code must include the address MSB. It is
followed by a single byte address value. In total, the
9-bits specify the address of the first byte of the write
operation. Subsequent bytes are data and they are
written sequentially. Addresses are incremented
internally as long as the bus master continues to issue
clocks. If the last address of 1FFh is reached, the
counter will roll over to 000h. Data is written MSB
first. A write operation is shown in Figure 9.
Unlike EEPROMs, any number of bytes can be
written sequentially and each byte is written to
memory immediately after it is clocked in (after the
8
th
clock). The rising edge of /CS terminates a
WRITE op-code operation. Asserting /WP active in
the middle of a write operation will have no affect
until the byte being written has completed.
Read Operation
After the falling edge of /CS, the bus master can issue
a READ op-code. This op-code must include the
address MSB. It is followed by a single byte address
value. In total, the 9-bits specify the address of the
first byte of the read operation. After the op-code and
address are complete, the SI line is ignored. The bus
master issues 8 clocks, with one bit read out for each.
Addresses are incremented internally as long as the
bus master continues to issue clocks. If the last
address of 1FFh is reached, the counter will roll over
to 000h. Data is read MSB first. The rising edge of
/CS terminates a READ op-code operation. A read
operation is shown in Figure 10.
Hold
The /HOLD pin can be used to interrupt a serial
operation without aborting it. If the bus master pulls
the /HOLD pin low while SCK is low, the current
operation will pause. Taking the /HOLD pin high
while SCK is low will resume an operation. The
transitions of /HOLD must occur while SCK is low,
but the SCK and /CS pins can toggle during a hold
state.
CS
SCK
SI
SO
01
2
345
6
7
00
Hi-Z
1
MSB
LSB
012
3
4
67
A7
0
Op-code
8-bit Address
0
A0
A3
A4
A5
A6
0
123
45
6
7
7
Data In
0
1
2
3
4
5
6
MSB
LSB
7
0
00
A8
A1
A2
5
Figure 9. Memory Write
CS
SCK
SI
SO
012
34
5
6
7
00
Hi-Z
1
0
Op-code
0
1
23
45
6
7
7
Data Out
0
1
2
3
4
5
6
MSB
LSB
7
0
1
00
A8
MSB
LSB
0
123
4
6
7
A7
8-bit Address
A0
A3
A4
A5
A6
A1
A2
5
Figure 10. Memory Read


Codice articolo simile - FM25CL04-S

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Ramtron International C...
FM25CL04-S RAMTRON-FM25CL04-S Datasheet
139Kb / 12P
   4Kb FRAM Serial 3V Memory
More results

Descrizione simile - FM25CL04-S

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
List of Unclassifed Man...
FM25L04 ETC-FM25L04 Datasheet
187Kb / 12P
   4Kb FRAM Serial 3V Memory
logo
Ramtron International C...
FM25CL04 RAMTRON-FM25CL04_05 Datasheet
139Kb / 12P
   4Kb FRAM Serial 3V Memory
logo
List of Unclassifed Man...
FM25040 ETC-FM25040 Datasheet
631Kb / 14P
   4Kb FRAM Serial Memory
FM24CL04 ETC-FM24CL04 Datasheet
119Kb / 12P
   4Kb FRAM Serial Memory
logo
Ramtron International C...
FM24CL04 RAMTRON-FM24CL04_05 Datasheet
116Kb / 11P
   4Kb FRAM Serial Memory
FM25040A RAMTRON-FM25040A Datasheet
141Kb / 13P
   4Kb FRAM Serial Memory
logo
List of Unclassifed Man...
FM24C04A ETC1-FM24C04A Datasheet
100Kb / 12P
   4Kb FRAM Serial Memory
logo
Ramtron International C...
FM24C04A RAMTRON-FM24C04A_05 Datasheet
98Kb / 12P
   4Kb FRAM Serial Memory
FM25L512 RAMTRON-FM25L512 Datasheet
163Kb / 13P
   512Kb FRAM Serial 3V Memory
FM25L16 RAMTRON-FM25L16_06 Datasheet
146Kb / 14P
   16Kb FRAM Serial 3V Memory
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : 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  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com