Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼
Nombre de pieza
         Descripción


CAT25C03 Datasheet(Hoja de datos) 4 Page - Catalyst Semiconductor

No. de Pieza. CAT25C03
Descripción  2K/4K/8K/16K/32K SPI Serial CMOS E2PROM
Descarga  10 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo 

 
 4 page
background image
4
CAT25C03/05/09/17/33
Doc. No. 25068-00 2/98
Advanced
FUNCTIONAL DESCRIPTION
The CAT25C03/05/09/17/33 supports the SPI bus data
transmission protocol. The synchronous Serial Periph-
eral Interface (SPI) helps the CAT25C03/05/09/17/33 to
interface directly with many of today’s popular
microcontrollers. The CAT25C03/05/09/17/33 contains
an 8-bit instruction register. (The instruction set and the
operation codes are detailed in the instruction set table)
After the device is selected with
CS going low, the first
byte will be received. The part is accessed via the SI pin,
with data being clocked in on the rising edge of SCK.
The first byte contains one of the six op-codes that define
the operation to be performed.
PIN DESCRIPTION
SI: Serial Input
SI is the serial data input pin. This pin is used to input all
opcodes, byte addresses, and data to be written to the
25C03/05/09/17/33. Input data is latched on the rising
edge of the serial clock.
SO: Serial Output
SO is the serial data output pin. This pin is used to
transfer data out of the 25C03/05/09/17/33. During a
read cycle, data is shifted out on the falling edge of the
serial clock.
SCK: Serial Clock
SCK is the serial clock pin. This pin is used to synchro-
nize the communication between the microcontroller
and the 25C03/05/09/17/33. Opcodes, byte addresses,
or data present on the SI pin are latched on the rising
edge of the SCK. Data on the SO pin is updated on the
falling edge of the SCK.
CS
CS
CS
CS
CS: Chip Select
CS is the Chip select pin. CS low enables the CAT25C03/
05/09/17/33 and
CS high disables the CAT25C03/05/
09/17/33.
CS high takes the SO output pin to high
impedance and forces the devices into a Standby Mode
(unless an internal write operation is underway)
The
CAT25C03/05/09/17/33 draws ZERO current in the
Standby mode. A high to low transition on
CS is required
prior to any sequence being initiated. A low to high
transition on
CS after a valid write sequence is what
initiates an internal write cycle.
WP
WP
WP
WP
WP: Write Protect
WP is the Write Protect pin. The Write Protect pin will
allow normal read/write operations when held high.
When
WP is tied low, all write operations to the device
are inhibited.
WP going low while CS is still low will
interrupt a write to the status register. If the internal write
cycle has already been initiated,
WP going low will have
no effect on any write operation to the status register.
HOLD
HOLD
HOLD
HOLD
HOLD: Hold
HOLD is the HOLD pin. The HOLD pin is used to pause
transmission to the CAT25C03/05/09/17/33 while in the
middle of a serial sequence without having to re-transmit
entire sequence at a later time. To pause,
HOLD must be
Instruction
Opcode
Operation
WREN
0000 0110
Enable Write Operations
WRDI
0000 0100
Disable Write Operations
RDSR
0000 0101
Read Status Register
WRSR
0000 0001
Write Status Register
READ
0000 X011(1)
Read Data from Memory
WRITE
0000 X010(1)
Write Data to Memory
INSTRUCTION SET
Note:
(1) X=O for 25C03, 25C09, 25C17 and 25C33. X=A8 for 25C05
(2) This parameter is tested initially and after a design or process change that affects the parameter.
(3) tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated.
Power-Up Timing(2)(3)
Symbol
Parameter
Max.
Units
tPUR
Power-up to Read Operation
1
ms
tPUW
Power-up to Write Operation
1
ms




Html Pages

1  2  3  4  5  6  7  8  9  10 


Datasheet Download



Número de Pieza relacionado

Número de PiezaDescripción de ComponentesHtml ViewFabricante
CAT25C011K/2K/4K/8K/16K SPI Serial CMOS E2PROM 1 2 3 4 5 MoreCatalyst Semiconductor
CAT25C128128K/256K-Bit SPI Serial CMOS E2PROM 1 2 3 4 5 MoreCatalyst Semiconductor
CAT25C3232K/64K-Bit SPI Serial CMOS E2PROM 1 2 3 4 5 MoreCatalyst Semiconductor
CAT25C6464K/128K-Bit SPI Serial CMOS E2PROM 1 2 3 4 5 MoreCatalyst Semiconductor
AK6512CASPI bus 64Kbit Serial CMOS EEPROM 1 2 3 4 5 MoreAsahi Kasei Microsystems
X25320SPI Serial E2PROM With Block LockTM Protection 1 2 3 4 5 MoreXicor Inc.
CAT25CXXXSupervisory Circuits with SPI Serial E2PROM Precision Reset Controller and Watchdog Timer 1 2 3 4 5 MoreCatalyst Semiconductor
CAT24WC3232K/64K-Bit I2C Serial CMOS E2PROM 1 2 3 4 5 MoreCatalyst Semiconductor
S-93C46ACMOS SERIAL E2PROM 1 2 3 4 5 MoreSeiko Instruments Inc
CAT25C6532K/64K-Bit SPI Serial CMOS EEPROM 1 2 3 4 5 MoreCatalyst Semiconductor

Enlace URL

¿ALLDATASHEET es útil para Ud.?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
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