DataSheet.es    


PDF 24CO08B-ISM Data sheet ( Hoja de datos )

Número de pieza 24CO08B-ISM
Descripción 4K/8K 2.5V I2C Serial EEPROMs
Fabricantes MicrochipTechnology 
Logotipo MicrochipTechnology Logotipo



Hay una vista previa y un enlace de descarga de 24CO08B-ISM (archivo pdf) en la parte inferior de esta página.


Total 12 Páginas

No Preview Available ! 24CO08B-ISM Hoja de datos, Descripción, Manual

24LC04B/08B
4K/8K 2.5V I2CSerial EEPROMs
FEATURES
• Single supply with operation down to 2.5V
• Low power CMOS technology
- 1 mA active current typical
- 10 µA standby current typical at 5.5V
- 5 µA standby current typical at 3.0V
• Organized as two or four blocks of 256 bytes
(2 x 256 x 8) and (4 x 256 x 8)
• 2-wire serial interface bus, I2Ccompatible
• Schmitt trigger, filtered inputs for noise suppres-
sion
• Output slope control to eliminate ground bounce
• 100 kHz (2.5V) and 400 kHz (5V) compatibility
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 16 bytes
• 2 ms typical write cycle time for page-write
• Hardware write protect for entire memory
• Can be operated as a serial ROM
• Factory programming (QTP) available
• ESD protection > 4,000V
• 1,000,000 erase/write cycles guaranteed
• Data retention > 200 years
• 8-pin DIP, 8-lead or 14-lead SOIC packages
• Available for extended temperature ranges
- Commercial (C):
- Industrial (I):
0°C to +70°C
-40°C to +85°C
DESCRIPTION
The Microchip Technology Inc. 24LC04B/08B is a 4K or
8K bit Electrically Erasable PROM. The device is orga-
nized as two or four blocks of 256 x 8-bit memory with
a 2-wire serial interface. Low voltage design permits
operation down to 2.5 volts with typical standby and
active currents of only 5 µA and 1 mA respectively. The
24LC04B/08B also has a page-write capability for up to
16 bytes of data. The 24LC04B/08B is available in the
standard 8-pin DIP and both 8-lead and 14-lead surface
mount SOIC packages.
PACKAGE TYPES
PDIP
A0 1
A1 2
A2 3
VSS 4
8-lead
SOIC
A0
A1
A2
VSS
14-lead
SOIC
NC
A0
A1
NC
A2
VSS
NC
1
2
3
4
1
2
3
4
5
6
7
8 VCC
7 WP
6 SCL
5 SDA
8 VCC
7 WP
6 SCL
5 SDA
14 NC
13 VCC
12 WP
11 NC
10 SCL
9 SDA
8 NC
BLOCK DIAGRAM
WP
HV GENERATOR
I/O
CONTROL
LOGIC
SDA SCL
MEMORY
CONTROL
LOGIC
XDEC
EEPROM ARRAY
(2 x 256 x 8) or
(4 X 256 X 8)
PAGE LATCHES
YDEC
I2C is a trademark of Philips Corporation.
VCC
V SS
SENSE AMP
R/W CONTROL
© 1996 Microchip Technology Inc.
DS21051E-page 1
This document was created with FrameMaker 4 0 4

1 page




24CO08B-ISM pdf
24LC04B/08B
3.6 Device Addressing
A control byte is the first byte received following the
start condition from the master device. The control byte
consists of a 4-bit control code, for the 24LC04B/08B
this is set as 1010 binary for read and write operations.
The next three bits of the control byte are the block
select bits (B2, B1, B0). B2 is a don't care for both the
24LC04B and 24LC08B; B1 is a don't care for the
24LC04B. They are used by the master device to select
which of the two or four 256 word blocks of memory are
to be accessed. These bits are in effect the most sig-
nificant bits of the word address.
The last bit of the control byte defines the operation to
be performed. When set to one a read operation is
selected, when set to zero a write operation is selected.
Following the start condition, the 24LC04B/08B moni-
tors the SDA bus checking the device type identifier
being transmitted, upon a 1010 code the slave device
outputs an acknowledge signal on the SDA line.
Depending on the state of the R/W bit, the 24LC04B/
08B will select a read or write operation.
Operation
Read
Write
Control
Code
1010
1010
Block Select
Block Address
Block Address
FIGURE 3-2: CONTROL BYTE
ALLOCATION
START
READ/WRITE
R/W
1
0
SLAVE ADDRESS
R/W A
1 0 1 0 X B1 B0
X = Don’t care. B1 is don’t care for 24LC04B.
4.0 WRITE OPERATION
4.1 Byte Write
Following the start condition from the master, the
device code (4 bits), the block address (3 bits), and the
R/W bit which is a logic low is placed onto the bus by
the master transmitter. This indicates to the addressed
slave receiver that a byte with a word address will follow
after it has generated an acknowledge bit during the
ninth clock cycle. Therefore the next byte transmitted
by the master is the word address and will be written
into the address pointer of the 24LC04B/08B. After
receiving another acknowledge signal from the
24LC04B/08B the master device will transmit the data
word to be written into the addressed memory location.
The 24LC04B/08B acknowledges again and the master
generates a stop condition. This initiates the internal
write cycle, and during this time the 24LC04B/08B will
not generate acknowledge signals (Figure 4-1).
4.2 Page Write
The write control byte, word address and the first data
byte are transmitted to the 24LC04B/08B in the same
way as in a byte write. But instead of generating a stop
condition the master transmits up to 16 data bytes to
the 24LC04B/08B which are temporarily stored in the
on-chip page buffer and will be written into the memory
after the master has transmitted a stop condition. After
the receipt of each word, the four lower order address
pointer bits are internally incremented by one. The
higher order seven bits of the word address remains
constant. If the master should transmit more than 16
words prior to generating the stop condition, the
address counter will roll over and the previously
received data will be overwritten. As with the byte write
operation, once the stop condition is received an inter-
nal write cycle will begin (Figure 4-2).
FIGURE 4-1:
BUS ACTIVITY
MASTER
BYTE WRITE
S
T
A
R
CONTROL
BYTE
T
WORD
ADDRESS
SDA LINE
S
BUS ACTIVITY
A
C
K
FIGURE 4-2:
BUS ACTIVITY
MASTER
SDA LINE
PAGE WRITE
S
T
A CONTROL
R BYTE
T
S
BUS ACTIVITY
WORD
ADDRESS (n)
AA
CC
KK
DATA n
DATA
S
T
O
P
P
AA
CC
KK
DATA n + 1
A
C
K
DATA n + 15
S
T
O
P
P
AA
CC
KK
© 1996 Microchip Technology Inc.
This document was created with FrameMaker 4 0 4
DS21051E-page 5

5 Page





24CO08B-ISM arduino
24LC04B/08B
24LC04B/08B Product Identification System
To order or to obtain information, e.g., on pricing or delivery, please use the listed part numbers, and refer to the factory or the listed
sales offices.
24LC04B/08B –
/P
Package:
Temperature
Range:
Device:
P = Plastic DIP (300 mil Body), 8-lead
SL = Plastic SOIC (150 mil Body), 14-lead
SN = Plastic SOIC (150 mil Body), 8-lead
SM = Plastic SOIC (207 mil Body), 8-lead
Blank = 0°C to +70°C
I = -40°C to +85°C
24LC04B
24LC04BT
24LC08B
24LC04BT
4K I2C Serial EEPROM
4K1 2C Serial EEPROM (Tape and Reel)
8K1 2C Serial EEPROM
8K 12C Serial EEPROM (Tape and Reel)
© 1996 Microchip Technology Inc.
DS21051E-page 11

11 Page







PáginasTotal 12 Páginas
PDF Descargar[ Datasheet 24CO08B-ISM.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
24CO08B-ISL4K/8K 2.5V I2C Serial EEPROMsMicrochipTechnology
MicrochipTechnology
24CO08B-ISM4K/8K 2.5V I2C Serial EEPROMsMicrochipTechnology
MicrochipTechnology
24CO08B-ISN4K/8K 2.5V I2C Serial EEPROMsMicrochipTechnology
MicrochipTechnology

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar