GT24C08A
Advanced
GT24C08A
2-WIRE
8K Bits
Serial EEPROM
Copyright © 2011 Giantec Semiconductor Inc. (Giantec). All rights reserved. Giantec reserves the right to make changes to this specification and its products at any time without
notice. Giantec products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for critical medical or surgical equipment,
aerospace or military, or other applications planned to support or sustain life. It is the customer's obligation to optimize the design in their own products for the best performance
and optimization on the functionality and etc. Giantec assumes no liability arising out of the application or use of any information, products or services described herein. Customers
are advised to obtain the latest version of this device specification before relying on any published information and prior placing orders for products.
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GT24C08A
Table of Contents
1.
2.
3.
4.
Features
.....................................................................................................................................................................
3
General Description
.............................................................................................................................................
3
Functional Block Diagram
................................................................................................................................
4
Pin Configuration...................................................................................................................................................
5
4.1 8-Pin SOIC/SOP, TSSOP and MSOP..................................................................................................... 5
4.2 8-Lead UDFN .......................................................................................................................................... 5
4.3 Pin Definition ........................................................................................................................................... 5
4.4 Pin Descriptions ...................................................................................................................................... 5
5. Device Operation
...................................................................................................................................................
6
5.1 2-WIRE Bus ............................................................................................................................................ 6
5.2 The Bus Protocol .................................................................................................................................... 6
5.3 Start Condition ........................................................................................................................................ 6
5.4 Stop Condition......................................................................................................................................... 6
5.5 Acknowledge ........................................................................................................................................... 6
5.6 Reset ....................................................................................................................................................... 6
5.7 Standby Mode ......................................................................................................................................... 6
5.8 Device Addressing .................................................................................................................................. 6
5.9 Write Operation ....................................................................................................................................... 7
5.10 Read Operation..................................................................................................................................... 7
5.11 Diagrams ............................................................................................................................................... 8
5.12 Timing Diagrams ................................................................................................................................. 11
6. Electrical Characteristics
..............................................................................................................................
12
6.1 Absolute Maximum Ratings .................................................................................................................. 12
6.2 Operating Range................................................................................................................................... 12
6.3 Capacitance .......................................................................................................................................... 12
6.4 DC Electrical Characteristic .................................................................................................................. 13
6.5 AC Electrical Characteristic .................................................................................................................. 14
7. Ordering Information
.........................................................................................................................................
15
8. Top Markings
.........................................................................................................................................................
16
8.1 SOIC/SOP Package.............................................................................................................................. 16
8.2 TSSOP Package ................................................................................................................................... 16
8.3 UDFN Package ..................................................................................................................................... 16
8.4 MSOP Package .................................................................................................................................... 16
9. Package Information
.........................................................................................................................................
17
9.1 SOIC/SOP ............................................................................................................................................. 17
9.2 TSSOP .................................................................................................................................................. 18
9.3 UDFN .................................................................................................................................................... 19
9.4 MSOP.................................................................................................................................................... 20
10. Revision History
................................................................................................................................................
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GT24C08A
1. Features
Two-Wire Serial Interface, I C
2
TM
Compatible
Page write mode
–
–
Bi-directional data transfer protocol
–
Partial page writes allowed
Wide-voltage Operation
V
CC
= 1.7V to 5.5V
Self timed write cycle: 5 ms (max.)
Noise immunity on inputs, besides Schmitt trigger
High-reliability
Speed: 400 KHz (1.7V) and 1 MHz (2.5V~5.5V)
Standby current (max.): 1
A,
1.7V
Operating current (max.): 2 mA, 5.5V
Hardware Data Protection
–
–
Endurance: 1 million cycles
Data retention: 100 years
Industrial grade
Packages: SOIC/SOP, TSSOP, UDFN and MSOP
Lead-free, RoHS, Halogen free, Green
–
Write Protect Pin
Sequential & Random Read Features
Memory organization: 8Kb (1,024 x 8)
Page Size: 16 bytes
2. General Description
The GT24C08A is an industrial standard electrically
erasable programmable read only memory (EEPROM)
device that utilizes the industrial standard 2-wire interface
for communications. The GT24C08A contains a memory
array of 8K bits (1,024x8), which is organized in 16-byte per
page.
The EEPROM operates in a wide voltage range from 1.7V
to 5.5V, which fits most application. The product provides
low-power operations and low standby current. The device
is offered in Lead-free, RoHS, halogen free or Green
package. The available package types are 8-pin SOIC/SOP,
TSSOP, UDFN and MSOP.
The GT24C08A is compatible to the standard 2-wire bus
protocol. The simple bus consists of Serial Clock (SCL) and
Serial Data (SDA) signals. Utilizing such bus protocol, a
Master device, such as a microcontroller, can usually
control one or more Slave devices, alike this GT24C08A.
The bit stream over the SDA line includes a series of bytes,
which identifies a particular Slave device, an instruction, an
address within that Slave device, and a series of data, if
appropriate. The GT24C08A also has a Write Protect
function via WP pin to cease from overwriting the data
stored inside the memory array.
In order to refrain the state machine entering into a wrong
state during power-up sequence or a power toggle off-on
condition, a power on reset circuit is embedded. During
power-up, the device does not respond to any instructions
until the supply voltage (V
CC
) has reached an acceptable
stable level above the reset threshold voltage. Once V
CC
passes the power on reset threshold, the device is reset
and enters into the Standby mode. This would also avoid
any inadvertent Write operations during power-up stage.
During power-down process, the device will enter into
standby mode, once V
CC
drops below the power on reset
threshold voltage. In addition, the device will be in standby
mode after receiving the Stop command, provided that no
internal write operation is in progress. Nevertheless, it is not
recommended to send an command until the V
CC
reaches
its operating level.
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GT24C08A
3. Functional Block Diagram
VCC
8
HIGH VOLTAGE
GENERATOR
TIMING &
CONTROL
SDA
SCL
WP
5
7
SLAVE ADDRESS
REGISTER &
COMPARATOR
CONTROL LOGIC
X DECODER
6
EEPROM ARRAY
A0
A1
A2
1
2
3
WORD ADDRESS
COUNTER
Y DECODER
ACK
GND 4
nMOS
CLOCK
DI/O
DATA REGISTER
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GT24C08A
4. Pin Configuration
4.1 8-Pin SOIC/SOP, TSSOP and MSOP
Top View
4.2 8-Lead UDFN
Top View
A0
A1
A2
GND
1
2
3
4
8
7
6
5
V
CC
WP
SCL
SDA
A0
A1
A2
GND
1
2
3
4
8
7
6
5
V
CC
WP
SCL
SDA
4.3 Pin Definition
Pin No.
1
2
3
4
5
6
7
8
Pin Name
A0
A1
A2
GND
SDA
SCL
WP
V
CC
I/O
I
I
I
-
I/O
I
I
-
Device Address Input
Device Address Input
Device Address Input
Ground
Serial Address and Data input and Data out put
Serial Clock Input
Write Protect Input
Power Supply
Definition
4.4 Pin Descriptions
SCL
This input clock pin is used to synchronize the data transfer
to and from the device.
SDA
The SDA is a bi-directional pin used to transfer addresses
and data into and out of the device. The SDA pin is an open
drain output and can be wired with other open drain or open
collector outputs. However, the SDA pin requires a pull-up
resistor connected to the power supply.
A0, A1, A2
The A0, A1 and A2 are the device address inputs.
For GT24C08A, only A2 pin is for hardwire address input,
while the A0 and A1 pins are no connected. Once A2 is
floated, it’s defaulted to ―zero‖. Thus, a total of 2 devices
can be connected on a single bus system.
WP
WP is the Write Protect pin. While the WP pin is connected
to the power supply of GT24C08A, the entire array
becomes Write Protected (i.e. the device becomes Read
only). When WP is tied to Ground or left floating, the normal
write operations are allowed.
V
CC
Supply voltage
GND
Ground of supply voltage
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