DataSheet.es    


PDF 24LC014 Data sheet ( Hoja de datos )

Número de pieza 24LC014
Descripción 1K I2C Serial EEPROM
Fabricantes Microchip 
Logotipo Microchip Logotipo



Hay una vista previa y un enlace de descarga de 24LC014 (archivo pdf) en la parte inferior de esta página.


Total 30 Páginas

No Preview Available ! 24LC014 Hoja de datos, Descripción, Manual

24AA014/24LC014
1K I2CSerial EEPROM
Device Selection Table
Part
Number
VCC
Range
Max
Clock
24AA014 1.7V - 5.5V 400 kHz(1)
24LC014 2.5V - 5.5V 400 kHz
Note 1: 100 kHz for VCC < 2.5V
Temp.
Range
I
I, E
Features:
• Single-Supply with Operation down to 1.7V
• Low-Power CMOS Technology:
- 1 mA active current, typical
- 1 A standby current, typical at 5.5V
• Organized as a Single Block of 128 Bytes
(128 x 8)
• Hardware Write Protection for Entire Array
• 2-Wire Serial Interface Bus, I2C™ Compatible
• 100 kHz and 400 kHz Clock Compatibility
• Page Write Buffer for up to 16 Bytes
• Self-Timed Write Cycle (including auto-erase)
• 5 ms max. Write Cycle Time
• Address Lines allow up to Eight Devices on Bus
• 1,000,000 Erase/Write Cycles
• ESD Protection > 4,000V
• Data Retention > 200 Years
• 8-Lead PDIP, SOIC, TSSOP, DFN, TDFN and
MSOP Packages
• 6-Lead SOT-23 Package
• Pb-Free and RoHS Compliant
• Available for Extended Temperature Ranges:
- Industrial (I):
-40°C to +85°C
- Automotive (E)
-40°C to +125°C
Description:
The Microchip Technology Inc. 24AA014/24LC014 is a
1 Kbit Serial Electrically Erasable PROM with opera-
tion down to 1.7V. The device is organized as a single
block of 128 x 8-bit memory with a 2-wire serial inter-
face. Low-current design permits operation with typical
standby and active currents of only 1 A and 1 mA,
respectively. The device has a page write capability for
up to 16 bytes of data. Functional address lines allow
the connection of up to eight 24AA014/24LC014
devices on the same bus for up to 8 Kbits of contiguous
EEPROM memory. The device is available in the
standard 8-pin PDIP, 8-pin SOIC (150 mil), TSSOP, 2x3
DFN and TDFN and MSOP packages. The 24AA014/
24LC014 is also available in the 6-lead SOT-23
package.
Package Types
PDIP/SOIC/TSSOP/MSOP
DFN/TDFN
A0 1
A1 2
A2 3
VSS 4
8 VCC
A0 1
7 WP
A1 2
A2 3
6 SCL VSS 4
5 SDA
8 VCC
7 WP
6 SCL
5 SDA
SCL
VSS
SDA
SOT-23
16
25
34
VCC
A0
A1
Block Diagram
A0 A1 A2
WP
HV Generator
I/O
Control
Logic
Memory
Control
Logic
XDEC
EEPROM
Array
SDA SCL
VCC
VSS
Write-Protect
Circuitry
YDEC
Sense Amp.
R/W Control
2010 Microchip Technology Inc.
DS21809G-page 1

1 page




24LC014 pdf
24AA014/24LC014
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1: PIN FUNCTION TABLE
Name PDIP
SOIC TSSOP DFN(1) TDFN(1) MSOP SOT-23
Description
A0 1
111
1 1 5 Chip Address Input
A1 2
222
2 2 4 Chip Address Input
A2 3
333
3 3 — Chip Address Input
VSS 4
444
4 4 2 Ground
SDA
5
555
5 5 3 Serial Address/Data I/O
SCL 6
666
6 6 1 Serial Clock
WP 7
777
7 7 — Write-Protect Input
VCC
8
888
8 8 6 +1.7V to 5.5V Power Supply
Note 1: The exposed pad on the DFN/TDFN packages can be connected to VSS or left floating.
2.1 A0, A1, A2 Chip Address Inputs
The A0, A1 and A2 inputs are used by the 24AA014/
24LC014 for multiple device operation. The levels on
these inputs are compared with the corresponding bits
in the slave address. The chip is selected if the com-
pare is true.
Up to eight devices may be connected to the same bus
by using different Chip Select bit combinations. These
inputs must be connected to either VCC or VSS.
For the SOT-23 devices up to four devices may be con-
nected to the same bus using different Chip Select bit
combinations.
In most applications, the chip address inputs A0, A1
and A2 are hard-wired to logic ‘0’ or logic ‘1’. For
applications in which these pins are controlled by a
microcontroller or other programmable device, the chip
address pins must be driven to logic ‘0’ or logic ‘1
before normal device operation can proceed.
2.2 Serial Data (SDA)
SDA is a bidirectional pin used to transfer addresses
and data into and out of the device. Since it is an open-
drain terminal, the SDA bus requires a pull-up resistor
to VCC (typical 10 kfor 100 kHz, 2 kfor 400 kHz).
For normal data transfer, SDA is allowed to change
only during SCL low. Changes during SCL high are
reserved for indicating the Start and Stop conditions.
2.3 Serial Clock (SCL)
The SCL input is used to synchronize the data transfer
from and to the device.
2.4 Write-Protect (WP)
This pin must be connected to either VSS or VCC. If tied
to VSS, write operations are enabled. If tied to VCC,
write operations are inhibited but read operations are
not affected.
3.0 FUNCTIONAL DESCRIPTION
The 24AA014/24LC014 supports a bidirectional, 2-wire
bus and data transmission protocol. A device that
sends data onto the bus is defined as transmitter, while
a device receiving data is defined as a receiver. The
bus has to be controlled by a master device which gen-
erates the Serial Clock (SCL), controls the bus access
and generates the Start and Stop conditions, while the
24AA014/24LC014 works as slave. Both master and
slave can operate as transmitter or receiver, but the
master device determines which mode is activated.
2010 Microchip Technology Inc.
DS21809G-page 5

5 Page





24LC014 arduino
24AA014/24LC014
8.0 READ OPERATIONS
Read operations are initiated in the same way as write
operations, with the exception that the R/W bit of the
slave address is set to ‘1’. There are three basic types
of read operations: current address read, random read
and sequential read.
8.1 Current Address Read
The 24AA014/24LC014 contains an address counter
that maintains the address of the last word accessed,
internally incremented by one. Therefore, if the
previous read access was to address n, the next
current address read operation would access data from
address n + 1. Upon receipt of the slave address with
the R/W bit set to ‘1’, the 24AA014/24LC014 issues an
acknowledge and transmits the 8-bit data word. The
master will not acknowledge the transfer, but does
generate a Stop condition and the 24AA014/24LC014
discontinues transmission (Figure 8-1).
8.2 Random Read
Random read operations allow the master to access
any memory location in a random manner. To perform
this type of read operation, the word address must first
be set. This is done by sending the word address to the
24AA014/24LC014 as part of a write operation.
FIGURE 8-1:
CURRENT ADDRESS READ
Bus Activity
Master
SDA Line
S
T
A
Control
R Byte
T
S
Bus Activity
Once the word address is sent, the master generates a
Start condition following the acknowledge. This
terminates the write operation, but not before the
internal Address Pointer is set. The master then issues
the control byte again but with the R/W bit set to a ‘1’.
The 24AA014/24LC014 will then issue an acknowl-
edge and transmits the eight-bit data word. The master
will not acknowledge the transfer, but does generate a
Stop condition and the 24AA014/24LC014 discontin-
ues transmission (Figure 8-2). After this command, the
internal address counter will point to the address
location following the one that was just read.
8.3 Sequential Read
Sequential reads are initiated in the same way as a
random read except that after the 24AA014/24LC014
transmits the first data byte, the master issues an
acknowledge as opposed to a Stop condition in a
random read. This directs the 24AA014/24LC014 to
transmit the next sequentially addressed 8-bit word
(Figure 8-3).
To provide sequential reads the 24AA014/24LC014
contains an internal Address Pointer which is
incremented by one at the completion of each opera-
tion. This Address Pointer allows the entire memory
contents to be serially read during one operation. The
internal Address Pointer will automatically roll over
from address 07Fh to address 000h.
Data
S
T
O
P
P
AN
CO
KA
C
K
2010 Microchip Technology Inc.
DS21809G-page 11

11 Page







PáginasTotal 30 Páginas
PDF Descargar[ Datasheet 24LC014.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
24LC011K/2K2-WireCMOSSerialEEPROMHoltekSemiconductorInc
HoltekSemiconductorInc
24LC0141K I2C Serial EEPROMMicrochip
Microchip
24LC01BEEPROMMicrochipTechnology
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