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A24C32 PDF Datasheet - TWO-WIRE SERIAL32K BITS (4096 x 8) EEPROM - AiT Semiconductor

Part Number A24C32
Description TWO-WIRE SERIAL32K BITS (4096 x 8) EEPROM
Manufacturers AiT Semiconductor 
Logo AiT Semiconductor Logo 
Preview
Preview ( 17 pages )
		
A24C32 datasheet, circuit
AiT Semiconductor Inc.
www.ait-ic.com
A24C32
EEPROM
TWO-WIRE SERIAL32K BITS (4096 X 8)
DESCRIPTION
FEATURES
A24C32 provides 32768 bits of serial electrically Two-Wire Serial Interface
erasable and programmable read-only memory VCC = 1.8V To 5.5V
(EEPROM) organized as 4096 words of 8 bits Bi-Directional Data Transfer Protocol
each.
Internal Organized 4096x8(32K bits)
400KHz (1.8V, 2.7V, 5V) Compatibility
The A24C32 is optimized for use in many industrial 32-byte Page(32K) Write Mode
and commercial applications where low-power and Partial Page Writes Allowed
low-voltage operations are essential.
Self-Timed Write Cycle (5ms Max)
High-Reliability
The A24C32 is accessed via a two-wire serial 1 Million Write Cycles guaranteed
interface.
Data Retention > 100 Years
Operating Temperature: -40oC to +85oC
The A24C32 is available in SOP8, TSSOP8 and Available in SOP8, TSSOP8 and DFN8
DFN8 packages.
Package
ORDERING INFORMATION
Package Type
Part Number
A24C32M8R
SOP8
M8
A24C32M8VR
A24C32M8U
A24C32M8VU
A24C32TMX8R
TSSOP8
TMX8
A24C32TMX8VR
A24C32TMX8U
A24C32TMX8VU
DFN8
J8
A24C32J8R
A24C32J8VR
R: Tape & Reel
Note
U: Tube
V: Halogen free Package
AiT provides all RoHS products
suffix “ V “ means Halogen free Package
REV2.2
- SEP 2008 RELEASED, JAN 2012 UPDATED –
-1-

1 page

A24C32 pdf, schematic
AiT Semiconductor Inc.
www.ait-ic.com
PIN DESCIPTION
A24C32
EEPROM
TWO-WIRE SERIAL32K BITS (4096 X 8)
SOP8
1
2
3
4
5
6
7
8
Top View
Pin #
TSSOP8
1
2
3
4
5
6
7
8
DFN8
1
2
3
4
5
6
7
8
Top View
Top View
Symbol
A0
A1
A2
GND
SDA
SCL
WP
V CC
Type
Functions
I
I
I
P
I/O & Open-drain
I
I
P
Address Input
Address Input
Address Input
Ground
Serial Data
Serial Clock Input
Write Protect NOTE1
Power Supply
NOTE1 Write Protect
WP Pin Status
At VCC
At GND
Part of the Array Protected
Full (32K) Array
Normal Read/Write Operations
REV2.2
- SEP 2008 RELEASED, JAN 2012 UPDATED –
-2-

2 Page

A24C32 equivalent
AiT Semiconductor Inc.
www.ait-ic.com
BLOCK DIAGRAM
A24C32
EEPROM
TWO-WIRE SERIAL32K BITS (4096 X 8)
REV2.2
- SEP 2008 RELEASED, JAN 2012 UPDATED –
-5-

5 Page

A24C32 diode, scr
AiT Semiconductor Inc.
www.ait-ic.com
A24C32
EEPROM
TWO-WIRE SERIAL32K BITS (4096 X 8)
RANDOM READ
A random read requires a “dummy” byte write sequence to load in the data word address. Once the device
address word and data word address are clocked in and acknowledged by the EEPROM, the microcontroller
must generate another start condition. The microcontroller now initiates a current address read by sending a
device address with the read/write select bit high. The EEPROM acknowledges the device address and
serially clocks out the data word. The microcontroller does not respond with a “0” but does generate a
following stop condition (see Figure 8 on page12).
SEQUENTIAL READ
Sequential reads are initiated by either a current address read or a random address read. After the
microcontroller receives a data word, it responds with an acknowledge. As long as the EEPROM receives an
acknowledge, it will continue to increment the data word address and serially clock out sequential data words.
When the memory address limit is reached, the data word address will “roll over” and the sequential read will
continue. The sequential read operation is terminated when the microcontroller does not respond with a “0”
but does generate a following stop condition (see Figure 9 on page12)
REV2.2
- SEP 2008 RELEASED, JAN 2012 UPDATED –
-9-

9 Page





Information Total 17 Pages
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A24C32The function of this parts is a TWO-WIRE SERIAL32K BITS (4096 x 8) EEPROM.AiT Semiconductor
AiT Semiconductor

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