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AT24C08B-TH-B

Part # AT24C08B-TH-B
Description EEPROM Serial-2Wire 8K-Bit 1Kx 8 2.5V/3.3V/5V 8-Pin TSSOP
Category IC
Availability In Stock
Qty 5
Qty Price
1 + $0.29918
Manufacturer Available Qty
Atmel
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

1
2
3
5
4
SCL
GND
SDA
WP
VCC
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
A0
A1
A2
GND
VCC
WP
SCL
SDA
A0
A1
A2
GND
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
8-lead SOIC
8-ball dBGA2
8-lead Ultra-Thin
Mini-MAP (MLP 2x3)
8-lead PDIP
5-lead SOT23
Bottom View Bottom View
8-lead TSSOP
Features
• Low-voltage and Standard-voltage Operation
– 1.8 (V
CC
= 1.8V to 5.5V)
• Internally Organized 512 x 8 (4K), or 1024 x 8 (8K)
• Two-wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• 1 MHz (5V), 400 kHz (1.8V, 2.5V, 2.7V) Compatibility
• Write Protect Pin for Hardware Data Protection
• 16-byte Page (4K, 8K) Write Modes
• Partial Page Writes Allowed
• Self-timed Write Cycle (5 ms max)
• High-reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
• 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead Ultra-Thin Mini-MAP (MLP 2x3), 5-lead SOT23,
8-lead TSSOP and 8-ball dBGA2 Packages
• Lead-free/Halogen-free
• Die Sales: Wafer Form, Tape and Reel and Bumped Wafers
Description
The AT24C04B/08B provides 4096/8192 b its of serial electrically erasable and pro-
grammable read-only memory (EEPROM) organized as 512/1024 words of 8 bits
each. The device is optimized for use in ma ny industrial and commercial applications
where low-power and low-voltage operation are essential. The AT24C04B/08B is
available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead Ultra-Thin Mini-
MAP (MLP 2x3)
, 5-lead SOT23, 8-lead TSSOP, and 8-ball dBGA2 packages and is
accessed via a Two-wire serial interface. In addition, the AT24C04B/08B is available
in 1.8V (1.8V to 5.5V) version.
Table 0-1. Pin Configuration
Pin Name Function
A0 - A2 Address Inputs
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
NC No Connect
GND Ground
VCC Power Supply
Two-wire
Serial EEPROM
4K (512 x 8)
8K (1024 x 8)
AT24C04B
AT24C08B
5226D–SEEPR–7/08
Note: For use of 5-lead SOT23
4K: The software A2 a nd A1 bits in the device
address word must be set to zero to properly
communicate.
8K: The software A2 bit in the device address word
must be set to zero to properly communicate.
2
5226D–SEEPR–7/08
AT24C04B/08B
Figure 0-1. Block Diagram
Absolute Maximum Ratings
Operating Temperature..................................–55°C to +125°C
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Storage Temperature .....................................–65°C to +150°C
Voltage on Any Pin
with Respect to Ground ....................................–1.0V to +7.0V
Maximum Operating Voltage .......................................... 6.25V
DC Output Current........................................................ 5.0 mA
START
STOP
LOGIC
VCC
GND
WP
SCL
SDA
A
2
A
1
A
0
SERIAL
CONTROL
LOGIC
EN
H.V. PUMP/TIMING
EEPROM
DATA RECOVERY
SERIAL MUX
X DEC
D
OUT
/ACK
LOGIC
COMP
LOAD
INC
DATA WORD
ADDR/COUNTER
Y DEC
R/W
D
OUT
D
IN
LOAD
DEVICE
ADDRESS
COMPARATOR
3
5226D–SEEPR–7/08
AT24C04B/08B
1. Pin Description
SERIAL CLOCK (SCL): The SCL input is used to positive edge clock data into each EEPROM
device and negative edge clock data out of each device.
SERIAL DATA (SDA): The SDA pin is bidirectional for serial data transfer. This pin is open-
drain driven and may be wire-ORed with any number of other open-drain or open-collector
devices.
DEVICE/PAGE ADDRESSES (A2, A1, A0):
The AT24C04B uses the A2 and A1 inputs for hard wire addressing and a toal of four 4K devices
may be addressed on a single bus system. The A0 pin is a no connect and can be connected to
ground (device addressing is discussed in detail under the Device Addressing section).
The AT24C08B only uses the A2 input for hardware addressing
and a total of two 8K devices
may be addressed on a single bus system. The A0 and A1 pins are no connects and can be
connected to ground (device addressing is discussed in detail under the Device Addressing
section).
Table 1-1. Write Protect
WP Pin
Status
Part of the Array Protected
24C04B/08B
At V
CC
Full Array
At GND Normal Read/Write Operations
1234567NEXT
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