|
|
PDF 24C32A Data sheet ( Hoja de datos )
| Número de pieza | 24C32A | |
| Descripción | 32K 5.0V I2C Serial EEPROM | |
| Fabricantes | MicrochipTechnology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de 24C32A (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
Obsolete Device
Please use 24LC32A.
24C32A
32K 5.0V I2C™ Serial EEPROM
FEATURES
• Voltage operating range: 4.5V to 5.5V
- Maximum write current 3 mA at 5.5V
- Standby current 1 µA typical at 5.0V
• 2-wire serial interface bus, I2C compatible
• 100 kHz and 400 kHz compatibility
• Self-timed ERASE and WRITE cycles
• Power on/off data protection circuitry
• Hardware write protect
• 1,000,000 Erase/Write cycles guaranteed
• 32-byte page or byte write modes available
• Schmitt trigger filtered inputs for noise suppres-
sion
• Output slope control to eliminate ground bounce
• 2 ms typical write cycle time, byte or page
• Up to eight devices may be connected to the
same bus for up to 256K bits total memory
• Electrostatic discharge protection > 4000V
• Data retention > 200 years
• 8-pin PDIP and SOIC packages
• Temperature ranges
- Commercial (C):
0°C to 70°C
- Industrial (I):
-40°C to +85°C
- Automotive (E):
-40°C to +125°C
DESCRIPTION
The Microchip Technology Inc. 24C32A is a 4K x 8
(32K bit) Serial Electrically Erasable PROM. It has
been developed for advanced, low power applications
such as personal communications or data acquisition.
The 24C32A also has a page-write capability of up to
32 bytes of data. The 24C32A is capable of both ran-
dom and sequential reads up to the 32K boundary.
Functional address lines allow up to eight 24C32A
devices on the same bus, for up to 256K bits address
space. Advanced CMOS technology and broad voltage
range make this device ideal for low-power/low-volt-
age, nonvolatile code and data applications. The
24C32A is available in the standard 8-pin plastic DIP
and both 150 mil and 200 mil SOIC packaging.
PACKAGE TYPES
PDIP
A0 1
A1 2
A2 3
Vss 4
SOIC
A0 1
A1 2
A2 3
Vss 4
8 Vcc
7 WP
6 SCL
5 SDA
8 Vcc
7 WP
6 SCL
5 SDA
BLOCK DIAGRAM
A0 A1 A2 WP
HV GENERATOR
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
I/O
SCL
SDA
VCC
VSS
XDEC
EEPROM
ARRAY
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
I2C is a trademark of Philips Corporation.
2004 Microchip Technology Inc.
DS21163E-page 1
1 page  
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 24C32A this is
set as 1010 binary for read and write (R/W) operations.
The next three bits of the control byte are the device
select bits (A2, A1, A0). They are used by the master
device to select which of the eight devices are to be
accessed. These bits are in effect the three most signif-
icant bits of the word address. The last bit of the control
byte defines the operation to be performed. When set
to a one a read operation is selected, and when set to
a zero a write operation is selected. The next two bytes
received define the address of the first data byte
(Figure 3-3). Because only A11...A0 are used, the
upper four address bits must be zeros. The most signif-
icant bit of the most significant byte of the address is
transferred first.
FIGURE 3-2: CONTROL BYTE
ALLOCATION
START
READ/WRITE
SLAVE ADDRESS
R/W A
24C32A
Following the start condition, the 24C32A monitors the
SDA bus checking the device type identifier being
transmitted. Upon receiving a 1010 code and appropri-
ate device select bits, the slave device outputs an
acknowledge signal on the SDA line. Depending on the
state of the R/W bit, the 24C32A will select a read or
write operation.
Operation
Read
Write
Control
Code
1010
1010
Device Select
Device Address
Device Address
R/W
1
0
1 0 1 0 A2 A1 A0
FIGURE 3-3: ADDRESS SEQUENCE BIT ASSIGNMENTS
CONTROL BYTE
1
0
1
0
A
2
A
1
A
0
R/W
SLAVE
ADDRESS
DEVICE
SELECT
BUS
ADDRESS BYTE 1
0
0
0
0
AA
11 10
A
9
A
8
ADDRESS BYTE 0
A
7
•
•
•
••
•
A
0
2004 Microchip Technology Inc.
DS21163E-page 5
5 Page 
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical
components in life support systems is not authorized except
with express written approval by Microchip. No licenses are
conveyed, implicitly or otherwise, under any intellectual
property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE, PowerSmart, rfPIC, and SmartShunt are
registered trademarks of Microchip Technology Incorporated
in the U.S.A. and other countries.
AmpLab, FilterLab, MXDEV, MXLAB, PICMASTER, SEEVAL,
SmartSensor and The Embedded Control Solutions Company
are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, dsPICDEM,
dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,
FanSense, FlexROM, fuzzyLAB, In-Circuit Serial
Programming, ICSP, ICEPIC, Migratable Memory, MPASM,
MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net,
PICLAB, PICtail, PowerCal, PowerInfo, PowerMate,
PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial,
SmartTel and Total Endurance are trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2004, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
2004 Microchip Technology Inc.
Microchip received ISO/TS-16949:2002 quality system certification for
its worldwide headquarters, design and wafer fabrication facilities in
Chandler and Tempe, Arizona and Mountain View, California in
October 2003. The Company’s quality system processes and
procedures are for its PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS21163E-page 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 24C32A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| 24C32 | 32K 5.0V I2C Smart Serial EEPROM | MicrochipTechnology |
| 24C32 | 2-WIRE SERIAL CMOS EEPROM |  Bookly Micro |
| 24C32 | Two-wire Serial EEPROM |  LRC |
| 24C320-EP | 32K 5.0V SPI Bus Serial EEPROM | MicrochipTechnology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 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, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |