AT24C08D - Complete

AT24C08D
I2C-Compatible (2-wire) Serial EEPROM
8-Kbit (1,024 x 8)
DATASHEET
Features

Low Voltage Operation
̶


VCC = 1.7V to 3.6V
Internally Organized as 1,024 x 8 (8K)
I2C-compatible (2-wire) Serial Interface
̶
̶
100kHz Standard Mode, 1.7V to 3.6V
400kHz Fast Mode, 1.7V to 3.6V
1MHz Fast Mode Plus (FM+), 2.5V to 3.6V
̶





Schmitt Triggers, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
Write Protect pin for Full Array Hardware Data Protection
Ultra Low Active Current (1mA Max) and Standby Current (0.8μA Max)
16-byte Page Write Mode
̶



Partial Page Writes Allowed
Random and Sequential Read Modes
Self-timed Write Cycle Within 5ms Max
High Reliability
̶
Endurance: 1,000,000 Write Cycles
Data Retention: 100 Years
̶

Green Package Options (Lead-free/Halide-free/RoHS Compliant)
̶

8-lead SOIC, 8-lead TSSOP, 8-pad UDFN, 8-lead PDIP(1), 5-lead SOT23,
8-ball VFBGA, and 4-ball WLCSP
Die Sale Options: Wafer Form and Tape and Reel Available
Description
The Atmel® AT24C08D provides 8,192 bits of Serial Electrically Erasable and
Programmable Read-Only Memory (EEPROM) organized as 1,024 words of 8 bits
each. The device’s cascadable feature allows up to two devices to share a
common 2-wire bus. This device is optimized for use in many industrial and
commercial applications where low power and low voltage operation are
essential. The device is available in space-saving 8-lead SOIC, 8-lead TSSOP,
8-pad UDFN, 8-lead PDIP,(1) 5-lead SOT23, 8-ball VFBGA, and 4-ball WLCSP
packages. The entire family of packages operates from 1.7V to 3.6V.
Note:
1.
Contact Atmel Sales for the availability of this package.
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
1.
Pin Descriptions and Pinouts
Table 1-1.
Pin Descriptions
Pin
Number
Pin
Symbol
Asserted
State
Pin
Type
1, 2
NC
No Connect: The NC pins are not bonded to a die pad. This pin can be
connected to GND or left floating.
—
—
Device Address Input: The A2 pin is used to select the hardware device
address and correspond to the fifth bit of the I2C seven bit slave address.
This pin can be directly connected to VCC or GND, allowing up to two
devices on the same bus.
Refer to Note 1 for behavior of the pin when not connected.
3
A2
—
Input
4
GND
Ground: The ground reference for the power supply. GND should be
connected to the system ground.
—
Power
SDA
Serial Data: The SDA pin is an open-drain bidirectional input/output pin
used to serially transfer data to and from the device.
The SDA pin must be pulled-high using an external pull-up resistor (not to
exceed 10K in value) and may be wire-ORed with any number of other
open-drain or open-collector pins from other devices on the same bus.
—
Input/
Output
SCL
Serial Clock: The SCL pin is used to provide a clock to the device and to
control the flow of data to and from the device. Command and input data
present on the SDA pin is always latched in on the rising edge of SCL,
while output data on the SDA pin is clocked out on the falling edge of SCL.
The SCL pin must either be forced high when the serial bus is idle or
pulled-high using an external pull-up resistor.
—
Input
7
WP
Write Protect: Connecting the WP pin to GND will ensure normal Write
operations. When the WP pin is connected to VCC, all Write operations to
the memory are inhibited.
Refer to Note 1 for behavior of the pin when not connected.
High
Input
8
VCC
Device Power Supply: The VCC pin is used to supply the source voltage to
the device. Operations at invalid VCC voltages may produce spurious
results and should not be attempted.
—
Power
5
6
Note:
1.
Pin Name and Functional Description
If the A2 or WP pins are not driven, they are internally pulled down to GND. In order to operate in a wide variety
of application environments, the pull-down mechanism is intentionally designed to be somewhat strong. Once
these pins are biased above the CMOS input buffer’s trip point (~0.5 x VCC), the pull-down mechanism
disengages. Atmel recommends connecting these pins to a known state whenever possible.
8-lead SOIC
NC
1
8
VCC
NC
2
7
WP
A2
3
6
SCL
GND
4
5
NC
NC
A2
GND
SDA
1
2
3
4
VCC
WP
SCL
SDA
8
7
6
5
5-lead SOT23
1
GND
2
SDA
3
(1)
5
4
Top View
WP
VCC
8-lead PDIP
NC 1
8
VCC
NC
1
8
VCC
NC 2
7
WP
NC
2
7
WP
A2 3
GND 4
6
SCL
A2
3
6
SCL
5
SDA
GND
4
5
SDA
Top View
Top View
Top View
SCL
8-pad UDFN
8-lead TSSOP
8-ball VFBGA
NC
1
8
VCC
NC
2
7
WP
A2
3
6
SCL
GND
4
5
SDA
Top View
Top View
4-ball WLCSP
VCC
GND
SCL
SDA
(1)
Top View
Note: Package drawings are not to scale.
Note:
2
1.
Refer to “Device Addressing” for details about addressing the SOT23 and WLCSP versions of the device.
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
Device Block Diagram and System Configuration
Figure 2-1.
Block Diagram
Hardware
Address
Comparator
Memory
System Control
Module
Power
On Reset
Generator
VCC
High Voltage
Generation Circuit
Write
Protection
Control
Row Decoder
2.
EEPROM Array
WP
Address Register
and Counter
1 page
Column Decoder
A2
SCL
Data Register
DOUT
Start
Stop
Detector
Data & ACK
Input/Output Control
DIN
GND
Figure 2-2.
SDA
System Configuration Using 2-Wire Serial EEPROMs
VCC
RPUP(max) =
tR(max)
0.8473 x CL
V - VOL(max)
RPUP(min) = CC
IOL
VCC
SCL
SDA
WP
I2C Bus Master:
Microcontroller
NC
VCC
NC
VCC
NC
WP
NC
Slave 1 WP
AT24Cxxx SDA
A2
GND
GND
Slave 0
AT24Cxxx SDA
SCL
A2
GND
SCL
AT24C08D [DATASHEET]
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3
3.
Device Operation and Communication
The AT24C08D operates as a slave device and utilizes a simple I2C-compatible 2-wire digital serial interface to
communicate with a host controller, commonly referred to as the bus Master. The Master initiates and controls
all Read and Write operations to the slave devices on the serial bus, and both the Master and the slave devices
can transmit and receive data on the bus.
The serial interface is comprised of just two signal lines: Serial Clock (SCL) and Serial Data (SDA). The SCL pin
is used to receive the clock signal from the Master, while the bidirectional SDA pin is used to receive command
and data information from the Master as well as to send data back to the Master. Data is always latched into the
AT24C08D on the rising edge of SCL and always output from the device on the falling edge of SCL. Both the
SCL and SDA pin incorporate integrated spike suppression filters and Schmitt Triggers to minimize the effects of
input spikes and bus noise.
All command and data information is transferred with the Most Significant Bit (MSB) first. During bus
communication, one data bit is transmitted every clock cycle, and after eight bits (one byte) of data have been
transferred, the receiving device must respond with either an acknowledge (ACK) or a no-acknowledge (NACK)
response bit during a ninth clock cycle (ACK/NACK clock cycle) generated by the Master. Therefore, nine clock
cycles are required for every one byte of data transferred. There are no unused clock cycles during any Read or
Write operation, so there must not be any interruptions or breaks in the data stream during each data byte
transfer and ACK or NACK clock cycle.
During data transfers, data on the SDA pin must only change while SCL is low, and the data must remain stable
while SCL is high. If data on the SDA pin changes while SCL is high, then either a Start or a Stop condition will
occur. Start and Stop conditions are used to initiate and end all serial bus communication between the Master
and the slave devices. The number of data bytes transferred between a Start and a Stop condition is not limited
and is determined by the Master. In order for the serial bus to be idle, both the SCL and SDA pins must be in the
logic-high state at the same time.
3.1
Clock and Data Transition Requirements
The SDA pin is an open drain terminal and therefore must be pulled high with an external pull-up resistor. Data
on the SDA pin may change only during SCL low time periods. Data changes during SCL high periods will
indicate a Start or Stop condition as defined below.
3.2
Start and Stop Conditions
3.2.1
Start Condition
A Start condition occurs when there is a high-to-low transition on the SDA pin while the SCL pin is at a stable
Logic 1 state and will bring the device out of standby mode. The Master uses a Start condition to initiate any
data transfer sequence; therefore, every command must begin with a Start condition. The device will
continuously monitor the SDA and SCL pins for a Start condition but will not respond unless one is detected.
Please refer to Figure 3-1 for more details.
3.2.2
Stop Condition
A Stop condition occurs when there is a low-to-high transition on the SDA pin while the SCL pin is stable in the
Logic 1 state. The Master can use the Stop condition to end a data transfer sequence with the AT24C08D which
will subsequently return to standby mode. The Master can also utilize a repeated Start condition instead of a
Stop condition to end the current data transfer if the Master will perform another operation. Please refer to
Figure 3-1 for more details.
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AT24C08D [DATASHEET]
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3.3
Acknowledge and No-Acknowledge
After every byte of data is received, the receiving device must confirm to the Master that it has successfully
received the data byte by responding with what is known as an Acknowledge (ACK). An ACK is accomplished
by the transmitting device first releasing the SDA line at the falling edge of the eighth clock cycle followed by the
receiving device responding with a Logic 0 during the entire high period of the ninth clock cycle.
When the AT24C08D is transmitting data to the Master, the Master can indicate that it is done receiving data
and wants to end the operation by sending a Logic 1 response to the AT24C08D instead of an ACK response
during the ninth clock cycle. This is known as a No-acknowledge (NACK) and is accomplished by the Master
sending a Logic 1 during the ninth clock cycle, at which point the AT24C08D will release the SDA line so the
Master can then generate a Stop condition.
The transmitting device, which can be the bus Master or the Serial EEPROM, must release the SDA line at the
falling edge of the eighth clock cycle to allow the receiving device to drive the SDA line to a Logic 0 to ACK the
previous 8-bit word. The receiving device must release the SDA line at the end of the ninth clock cycle to allow
the transmitter to continue sending new data. A timing diagram has been provided in Figure 3-1 to better
illustrate these requirements.
Figure 3-1.
Start Condition, Data Transitions, Stop Condition, and Acknowledge
SCL
SDA
Must Be
Stable
SDA
Must Be
Stable
1
2
Acknowledge Window
8
9
Stop
Condition
SDA
Acknowledge
Valid
Start
Condition
SDA
Change
Allowed
3.4
SDA
Change
Allowed
The transmitting device (Master or Slave)
must release the SDA line at this point to allow
the receiving device (Master or Slave) to drive the
SDA line low to ACK the previous 8-bit word.
The receiver (Master or Slave)
must release the SDA line at
this point to allow the transmitter
to continue sending new data.
Standby Mode
The AT24C08D features a low-power standby mode which is enabled when any one of the following occurs:





A valid power-up sequence is performed (see Section 8.6, “Power-Up Requirements and Reset
Behavior”).
A Stop condition is received by the device unless it initiates an internal write cycle (see Section 5.).
At the completion of an internal write cycle (see Section 5., “Write Operations”)
An unsuccessful match of the device type identifier or hardware address in the Device Address byte
occurs (see Section 4.1, “Device Addressing”).
The bus Master does not ACK the receipt of data read out from the device; instead it sends a NACK
response (see Section 6., “Read Operations”).
AT24C08D [DATASHEET]
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5
3.5
Software Reset
After an interruption in protocol, power loss, or system reset, any 2-wire part can be protocol reset by following
these steps:
1.
Create a Start condition (if possible).
2.
3.
Clock nine cycles.
Create another Start condition followed by a Stop condition as seen in Figure 3-2.
The device should be ready for the next communication after the above steps have been completed. In the
event that the device is still non-responsive or remains active on the SDA bus, a power cycle must be used to
reset the device (see Section 8.6.1, “Device Reset”).
Figure 3-2.
Software Reset
Dummy Clock Cycles
SCL
1
Start
Condition
SDA
6
AT24C08D [DATASHEET]
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2
3
8
9
Start
Condition
Stop
Condition
4.
Memory Organization
The AT24C08D is internally organized as 64 pages of 16 bytes each.
4.1
Device Addressing
Accessing the device requires an 8-bit Device Address word following a Start condition to enable the device for
a Read or Write operation. Since multiple slave devices can reside on the serial bus, each slave device must
have its own unique address so the Master can access each device independently.
The most significant four bits of the Device Address word is referred to as the device type identifier. The device
type identifier ‘1010’ (Ah) is required in bits seven through four of the Device Address byte (see Table 4-1).
Following the 4-bit device type identifier is the hardware slave address bit, A2. This bit can be used to expand
the address space by allowing up to two 8-Kbit Serial EEPROM devices on the same bus. The A2 value must
correlate with the voltage level on the corresponding hardwired input pins A2.
The A2 pin uses an internal proprietary circuit that automatically biases it to a Logic 0 state if the pin is allowed to
float. In order to operate in a wide variety of application environments, the pull-down mechanism is intentionally
designed to be somewhat strong. Once the pin is biased above the CMOS input buffer’s trip point (~0.5 x VCC),
the pull-down mechanism disengages. Atmel recommends connecting the A2 pin to a known state whenever
possible.
When using the SOT23 and WLCSP packages, the A2 pin is not accessible and is left floating. The previously
mentioned automatic pull-down circuit will set this pin to a Logic 0 state. As a result, to properly communicate
with the device in the SOT23 and WLCSP packages, the A2 software bit must always be set to Logic 0 for any
operation.
Following the A2 hardware slave address bit are bits A9 and A8 (bit 2 and bit 1 of the Device Address byte),
which are the two most significant bits of the memory array word address. Please refer to Table 4-1 to review
these bit positions.
The eighth bit (bit 0) of the Device Address byte is the Read/Write operation select bit. A Read operation is
initiated if this bit is high and a Write operation is initiated if this bit is low.
Upon the successful comparison of the Device Address byte, the EEPROM will return an ACK. If a valid
comparison is not made, the device will NACK and return to a standby state.
Table 4-1.
Device Address Byte
Hardware
Slave
Address
Bit
Device Type Identifier
Most Significant Bits
of the Word Address
Read/
Write
Package
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SOIC, TSSOP,
UDFN, PDIP, VFBGA
1
0
1
0
A2
A9
A8
R/W
SOT23, WLCSP
1
0
1
0
0
A9
A8
R/W
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
7
For all operations except the Current Address Read, a Word Address byte must be transmitted to the device
immediately following the Device Address byte. The Word Address byte consists of the remaining eight bits of
the 10-bit memory array word address, and is used to specify which byte location in the EEPROM to start
reading or writing. Please refer to Table 4-2 to review these bit positions.
Table 4-2.
Word Address Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
A7
A6
A5
A4
A3
A2
A1
A0
The relationship of the AC timing parameters with respect to SCL and SDA for the AT24C08D are shown in the
timing waveform Figure 8-1 on page 15. The AC timing characteristics and specifications are outlined in Section
8.4 “AC Characteristics” on page 15.
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AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
5.
Write Operations
All Write operations for the AT24C08D begin with the Master sending a Start condition, followed by a Device
Address byte with the R/W bit set to ‘0’, and then by the Word Address byte. The data value(s) to be written to
the device immediately follow the Word Address byte.
5.1
Byte Write
The AT24C08D supports the writing of single 8-bit bytes. Selecting a data word in the AT24C08D requires a 10bit word address.
Upon receipt of the proper Device Address and Word Address bytes, the EEPROM will send an Acknowledge.
The device will then be ready to receive the first 8-bit data word. Following receipt of the 8-bit data word, the
EEPROM will respond with an Acknowledge. The addressing device, such as a bus Master, must then terminate
the Write operation with a Stop condition. At that time, the EEPROM will enter an internally self-timed write
cycle, which will be completed within tWR, while the data word is being programmed into the nonvolatile
EEPROM. All inputs are disabled during this write cycle, and the EEPROM will not respond until the Write is
complete.
Figure 5-1.
Byte Write
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
D2
D1
D0
0
SCL
Device Address Byte
SDA
1
0
1
0
A2
A9
A8
0
0
MSB
Start
by
Master
5.2
Data Word
Word Address Byte
A7
A6
A5
A4
A3
A2
A1
A0
0
ACK
from
Slave
D7
D6
D5
D4
D3
MSB
MSB
ACK
from
Slave
ACK
from
Slave
Stop
by
Master
Page Write
A Page Write operation allows up to 16 bytes to be written in the same write cycle; provided all bytes are in the
same row of the memory array (where address bits A9 through A4 are the same). Partial Page Writes of less
than 16 bytes are also allowed.
A Page Write is initiated the same way as a Byte Write, but the bus Master does not send a Stop condition after
the first data word is clocked in. Instead, after the EEPROM acknowledges receipt of the first data word, the bus
Master can transmit up to fifteen additional data words. The EEPROM will respond with an ACK after each data
word is received. Once all data to be written has been sent to the device, the bus Master must issue a Stop
condition (see Figure 5-2), at which time the internally self-timed write cycle will begin.
The lower four bits of the word address are internally incremented following the receipt of each data word. The
higher order address bits are not incremented and retain the memory page row location. Page Write operations
are limited to writing bytes within a single physical page regardless of the number of bytes actually being written.
When the incremented word address reaches the page boundary, the address counter will “roll over” to the
beginning of the same page. Nevertheless, creating a roll-over event should be avoided as previously loaded
data in the page could become unintentionally altered.
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Figure 5-2.
Page Write
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
A1
A0
0
SCL
Device Address Byte
SDA
1
0
1
0
A2
A9
Word Address Byte
A8
0
A7
0
MSB
A6
A5
A4
A3
A2
MSB
Start
by
Master
ACK
from
Slave
ACK
from
Slave
1
2
3
4
5
6
7
8
9
D6
D5
D4
D3
2
3
4
5
D2
D1
D0
0
MSB
7
8
9
D7
D6
D5
D4
D3
D2
D1
D0
0
MSB
ACK
from
Slave
5.3
6
Data Word (n+x), max of 16 without rollover
Data Word (n)
D7
1
ACK
from
Slave
Stop
by
Master
Acknowledge Polling
An Acknowledge Polling routine can be implemented to optimize time sensitive applications which would prefer
not to wait the fixed maximum write cycle time (tWR). This method allows the application to know immediately
when the Serial EEPROM write cycle has completed so a subsequent operation can be started.
Once the internally self-timed write cycle has started, an Acknowledge Polling routine can be initiated. This
involves repeatedly sending a Start condition followed by a valid Device Address byte with the R/W bit set at
Logic 0. The device will not respond with an ACK while the write cycle is ongoing. Once the internal write cycle
has completed, the EEPROM will respond with an ACK, allowing a new Read or Write operation to be
immediately initiated. A flow chart has been included below in Figure 5-3 to better illustrate this technique.
Figure 5-3.
Acknowledge Polling Flow Chart
Send any
Write
protocol
Send
Stop
condition
to initiate the
write cycle
Send Start
condition followed
by a valid
Device Address
byte with R/W = 0
Did
the device
ACK?
YES
Proceed to
next Read or
Write operation
NO
5.4
Write Cycle Timing
The length of the self-timed write cycle or tWR is defined as the amount of time from the Stop condition that
begins the internal Write operation to the Start condition of the first Device Address byte sent to the AT24C08D
which it subsequently responds to with an ACK. Figure 5-4 has been included to show this measurement.
During the internally self-timed write cycle, any attempts to read from or write to the memory array will not be
processed.
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AT24C08D [DATASHEET]
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Figure 5-4.
Write Cycle Timing
SCL
8
9
9
ACK
ACK
Data Word n
SDA
D0
tWR
Stop
Condition
5.5
Start
Condition
First Acknowledge from the device
to a valid device address sequence after
write cycle is initiated. The minumum tWR
can only be determined through
the use of an ACK Polling routine.
Stop
Condition
Write Protection
The AT24C08D utilizes a hardware data protection scheme that allows the user to write protect the entire
memory contents when the WP pin is at VCC (or a valid VIH). No write protection will be set if the WP pin is at
GND or left floating.
Table 5-1.
AT24C08D Write Protect Behavior
WP Pin Voltage
Part of the Array Protected
VCC
Full Array
GND
None – Write Protection Not Enabled
The status of the WP pin is sampled at the Stop condition for every Byte Write or Page Write command prior to
the start of an internally self-timed Write operation. Changing the WP pin state after the Stop condition has been
sent will not alter or interrupt the execution of the write cycle. The WP pin state must be valid with respect to the
associated setup (tSU.WP) and hold (tHD.WP) timing as shown in the Figure 5-5 below. The WP setup time is the
amount of time that the WP state must be stable before the Stop condition is issued. The WP hold time is the
amount of time after the Stop condition that the WP state must remain stable.
If an attempt is made to write to the device while the WP pin has been asserted, the device will acknowledge the
Device Address, Word Address, and Data bytes but no write cycle will occur when the Stop condition is issued;
and the device will immediately be ready to accept a new Read or Write command.
Figure 5-5.
SCL
Write Protect Setup and Hold Timing
1
2
7
8
9
Stop
by
Master
Data Word Input Sequence Page/Byte Write Operation
SDA IN
D7
D6
D1
D0
ACK by Slave
tSU.WP
tHD.WP
WP
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6.
Read Operations
Read operations are initiated the same way as Write operations with the exception that the Read/Write Select
bit in the Device Address word must be a Logic 1. There are three Read operations:



6.1
Current Address Read
Random Address Read
Sequential Read
Current Address Read
The internal data word address counter maintains the last address accessed during the last Read or Write
operation incremented by one. This address stays valid between operations as long as the VCC is maintained to
the part. The address roll-over during read is from the last byte of the last page to the first byte of the first page
of the memory.
A Current Address Read operation will output data according to the location of the internal data word address
counter. This is initiated with a Start condition followed by a valid Device Address byte with the R/W bit set to
Logic 1. The device will ACK this sequence and the current address data word is serially clocked out on the
SDA line. All types of Read operations will be terminated if the bus Master does not respond with an ACK (it
NACKs) during the ninth clock cycle, which will force the device into standby mode. After the NACK response,
the Master may send a Stop condition to complete the protocol, or it can send a Start condition to begin the next
sequence.
Figure 6-1.
Current Address Read
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
D2
D1
D0
1
SCL
Device Address Byte
SDA
1
0
1
0
A2
A9
Data Word (n)
A8
1
0
MSB
Start
by
Master
6.2
D7
D6
D5
D4
D3
MSB
ACK
from
Slave
NACK
from
Master
Stop
by
Master
Random Read
A Random Read begins in the same way as a Byte Write operation does to load in a new data word address.
This is known as a “dummy write” sequence; however, the Data Byte and Stop condition of the Byte Write must
be omitted to prevent the part from entering an internal write cycle. Once the Device Address and Word Address
are clocked in and acknowledged by the EEPROM, the bus Master must generate another Start condition. The
bus Master now initiates a Current Address Read by sending a Start condition followed by a valid Device
Address byte with the R/W bit set to Logic 1. In this second Device Address byte, the bit positions usually
reserved for the most significant bits of the Word Address (bit 2 and 1) are don’t care bits since the address
which will be read from is determined only by what was sent in the dummy write portion of the sequence. The
EEPROM will ACK the Device Address and serially clock out the data word on the SDA line. All types of Read
operations will be terminated if the bus Master does not respond with an ACK (it NACKs) during the ninth clock
cycle, which will force the device into standby mode. After the NACK response, the Master may send a Stop
condition to complete the protocol, or it can send a Start condition to begin the next sequence.
12
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
Figure 6-2.
Random Read
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
A1
A0
0
SCL
Device Address Byte
SDA
1
0
1
0
A9
A2
Word Address Byte
A8
0
0
A7
MSB
A6
A5
A4
A3
A2
MSB
Start
by
Master
ACK
from
Slave
ACK
from
Slave
Dummy Write
1
2
3
4
5
6
7
8
9
1
2
3
0
1
0
A9
A2
A8
1
0
D7
MSB
6
7
8
9
D6
D5
D4
D3
D2
D1
D0
1
MSB
Start
by
Master
6.3
5
Data Word (n)
Device Address Byte
1
4
ACK
from
Slave
Stop
by
Master
NACK
from
Master
Sequential Read
Sequential Reads are initiated by either a Current Address Read or a Random Read. After the bus Master
receives a data word, it responds with an acknowledge. As long as the EEPROM receives an ACK, it will
continue to increment the word address and serially clock out sequential data words. When the maximum
memory address is reached, the data word address will roll-over and the Sequential Read will continue from the
beginning of the memory array. All types of Read operations will be terminated if the bus Master does not
respond with an ACK (it NACKs) during the ninth clock cycle, which will force the device into standby mode.
After the NACK response, the Master may send a Stop condition to complete the protocol, or it can send a Start
condition to begin the next sequence.
Figure 6-3.
Sequential Read
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
D2
D1
D0
0
SCL
Device Address Byte
SDA
1
0
1
0
A9
A2
Data Word (n)
A8
1
0
D7
MSB
Start
by
Master
1
D5
D4
2
3
4
5
6
7
8
9
ACK
from
Master
1
2
D6
D5
D4
D3
D2
3
4
5
6
7
8
9
1
2
3
D1
D0
0
D7
D6
D5
D4
D3
D2
D1
D0
0
MSB
ACK
from
Master
4
5
6
7
8
9
D1
D0
1
Data Word (n+x)
Data Word (n+2)
MSB
7.
D3
ACK
from
Slave
Data Word (n+1)
D7
D6
MSB
D7
D6
D5
D4
D3
D2
MSB
ACK
from
Master
NACK
from
Master
Stop
by
Master
Device Default Condition from Atmel
The AT24C08D is delivered with the EEPROM array set to Logic 1, resulting in FFh data in all locations.
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
13
8.
Electrical Specifications
8.1
Absolute Maximum Ratings
Functional operation at the “Absolute Maximum Ratings”
or any other conditions beyond those indicated in Section
8.2 “DC and AC Operating Range” is not implied or
guaranteed. Stresses beyond those listed under “Absolute
Maximum Ratings” and/or exposure to the “Absolute
Maximum Ratings” for extended periods may affect device
reliability and cause permanent damage to the device.
Temperature under Bias. . . . . . . . . . .-55C to +125C
Storage Temperature . . . . . . . . . . . . .-65C to +150C
Supply Voltage
with respect to ground . . . . . . . . . . . . -0.5V to +4.10V
The voltage extremes referenced in the “Absolute
Maximum Ratings” are intended to accommodate short
duration undershoot/overshoot pulses that the device may
be subjected to during the course of normal operation and
does not imply or guarantee functional device operation at
these levels for any extended period of time.
Voltage on any pin
with respect to ground . . . . . . . . . -0.6V to VCC + 0.5V
DC Output Current . . . . . . . . . . . . . . . . . . . . . . .5.0mA
8.2
DC and AC Operating Range
Table 8-1.
DC and AC Operating Range
AT24C08D
8.3
Operating Temperature (Case)
Industrial Temperature Range
VCC Power Supply
Low Voltage Grade
-40C to +85C
1.7V to 3.6V
DC Characteristics
Table 8-2.
DC Characteristics
Parameters are applicable over the operating range in specified Section 8.2, unless otherwise noted.
Symbol
Parameter
VCC
Supply Voltage
ICC1
Supply Current, Read
ICC2
Supply Current, Write
ISB
Standby Current
ILI
Input Leakage Current
ILO
Output Leakage Current
VIL
Input Low Level(2)
VIH
Input High Level(2)
VOL1
Output Low Level
VCC = 1.8V
VOL2
Output Low Level
VCC = 3.0V
Notes:
14
1.
2.
Test Conditions
Min
1.7
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
Max
Units
3.6
V
VCC = 1.8V(2)
Read at 400kHz
0.08
0.3
mA
VCC = 3.6V
Read at 1MHz
0.15
0.5
mA
VCC = 3.6V
Write at 1MHz
0.20
1.0
mA
0.08
0.4
μA
0.10
0.8
μA
VIN = VCC or VSS
0.10
3.0
μA
VOUT = VCC or VSS
0.05
3.0
μA
–0.6
VCC x 0.3
V
VCC x 0.7
VCC + 0.5
V
IOL = 0.15mA
0.2
V
IOL = 2.1mA
0.4
V
VCC = 1.8V(2)
VCC = 3.6V
VIN = VCC or VSS
Typical values characterized at TA = +25°C unless otherwise noted.
This parameter is characterized but is not 100% tested in production.
AT24C08D [DATASHEET]
Typical(1)
8.4
AC Characteristics
Table 8-3. AC Characteristics
Parameters are applicable over operating range in Section 8.2 unless otherwise noted. Test conditions shown in Note 2.
Symbol
Parameter
fSCL
Clock Frequency, SCL
tLOW
Clock Pulse Width Low
tHIGH
Clock Pulse Width High
Standard Mode
Fast Mode
Fast Mode Plus
VCC1.7V to 3.6V
VCC1.7V to 3.6V
VCC  2.5V to 3.6V
Min
Max
Min
100
tI
Input Filter Spike Suppression (SCL, SDA)
tAA
Clock Low to Data Out Valid
Min
400
Max
Units
1000
kHz
4,700
1300
500
ns
4,000
600
400
ns
(1)
(1)
Max
100
100
100
ns
4,500
900
450
ns
tBUF
Bus Free Time between Stop and Start
4,700
1300
500
ns
tHD.STA
Start Hold Time
4,000
600
250
ns
tSU.STA
Start Set-up Time
4,700
600
250
ns
tHD.DAT
Data In Hold Time
0
0
0
ns
tSU.DAT
Data In Set-up Time
200
100
100
ns
tR
Inputs Rise Time(1)
(1)
1,000
300
100
ns
300
300
100
ns
tF
Inputs Fall Time
tSU.STO
Stop Set-up Time
4,700
600
250
ns
tSU.WP
Write Protect Setup Time
4,000
600
100
ns
tHD.WP
Write Protect Hold Time
4,000
600
400
ns
tDH
Data Out Hold Time
100
50
50
ns
tWR
Write Cycle Time
Notes:
5
5
5
ms
1. These parameters are determined through product characterization and are not 100% tested in production.
2. AC measurement conditions:

CL: 100pF

RPUP (SDA bus line pull-up resistor to VCC): 1.3k (1000kHz), 4k (400kHz), 10k (100kHz)

Input pulse voltages: 0.3 x VCC to 0.7 x VCC

Input rise and fall times:  50ns

Input and output timing reference voltages: 0.5 x VCC
Figure 8-1.
Bus Timing
tHIGH
tF
tR
tLOW
SCL
tSU.STA
tHD.STA
tHD.DAT
tSU.DAT
tSU.STO
SDA IN
tAA
tDH
tBUF
SDA OUT
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
15
8.5
Pin Capacitance
Table 8-4.
Pin Capacitance(1)
Applicable over recommended operating range from TA = 25C, f = 1.0MHz, VCC = 3.6V.
Symbol
Test Condition
CI/O
CIN
Note:
8.6
1.
Max
Units
Conditions
Input/Output Capacitance (SDA)
8
pF
VI/O = 0V
Input Capacitance (A2, SCL)
6
pF
VIN = 0V
This parameter is characterized but is not 100% tested in production.
Power-Up Requirements and Reset Behavior
During a power-up sequence, the VCC supplied to the AT24C08D should monotonically rise from GND to the
minimum VCC level as specified in Section 8.2 with a slew rate no greater than 1V/μs.
8.6.1
Device Reset
To prevent inadvertent write operations or other spurious events from happening during a power-up sequence,
the AT24C08D includes a Power-On-Reset (POR) circuit. Upon power-up, the device will not respond to any
commands until the VCC level crosses the internal voltage threshold (VPOR) that brings the device out of reset
and into standby mode.
The system designer must ensure the instructions are not sent to the device until the VCC supply has reached a
stable value greater than or equal to the minimum VCC level. Additionally, once the VCC is greater than or equal
to the minimum VCC level, the bus Master must wait at least tPUP before sending the first command to the device.
See Table 8-5 for the values associated with these power-up parameters.
Table 8-5.
Power-up Conditions(1)
Symbol
Parameter
Min
tPUP
Time required after VCC is stable before the device can accept commands.
100
VPOR
Power-On Reset Threshold Voltage
tPOFF
Minimum time at VCC = 0V between power cycles.
Note:
1.
Max
Units
μs
1.5
1
V
ms
These parameters are characterized but they are not 100% tested in production.
If an event occurs in the system where the VCC level supplied to the AT24C08D drops below the maximum VPOR
level specified, it is recommended that a full power cycle sequence be performed by first driving the VCC pin to
GND waiting at least the minimum tPOFF time, and then performing a new power-up sequence in compliance
with the requirements defined in this section.
8.7
EEPROM Cell Performance Characteristics
Table 8-6.
Operation
Test Condition
Write Endurance(1)
Data Retention(2)
Notes:
16
EEPROM Cell Performance Characteristics
1.
2.
Min
Max
Units
TA = 25°C, VCC(min)< VCC < VCC(max)
Byte or Page Write Mode
1,000,000
—
Write Cycles
TA = 55°C, VCC(min)< VCC < VCC(max)
100
—
Years
Write endurance performance is determined through characterization and the qualification process.
The data retention capability is determined through qualification and is checked on each device in production.
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
9.
Ordering Code Detail
AT2 4 C 0 8 D - S S H M x x - T
Atmel Designator
Shipping Carrier Option
T = Tape and Reel, Standard Quantity Option
E = Tape and Reel, Expanded Quantity Option
B = Bulk (Tubes)
Product Family
24C = Standard I2C-compatible
Serial EEPROM
Product Variation /
Customer Specific Option
xx = Applies to select packages only.
See ordering table for details.
Device Density
08 = 8-Kilobit
Operating Voltage
M = 1.7V to 3.6V
Device Revision
Package Device Grade or
Wafer/Die Thickness
H = Green, NiPdAu Lead Finish
Industrial Temperature Range
(-40°C to +85°C)
U = Green, Matte Tin Lead Finish
or SnAgCu Ball
Industrial Temperature Range
(-40°C to +85°C)
11 = 11mil Wafer Thickness
Package Option
SS = JEDEC SOIC
X
= TSSOP
MA = 2.0mm x 3.0mm UDFN
P
= PDIP
ST = SOT23
C
= VFBGA
U
= WLCSP
WWU = Wafer Unsawn
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
17
10.
Ordering Information
Delivery Information
Atmel Ordering Code
Lead Finish
Package
Form
Quantity
Tape and Reel
4,000 per Reel
Bulk (Tubes)
100 per Tube
Tape and Reel
5,000 per Reel
Bulk (Tubes)
100 per Tube
Tape and Reel
5,000 per Reel
Tape and Reel
15,000 per Reel
8P3
Bulk (Tubes)
50 per Tube
5TS1
Tape and Reel
8U3-1
Tape and Reel
AT24C08D-SSHM-T
Operation
Range
8S1
AT24C08D-SSHM-B
AT24C08D-XHM-T
AT24C08D-XHM-B
NiPdAu
(Lead-free/Halogen-free)
8X
AT24C08D-MAHM-T
8MA2
AT24C08D-MAHM-E
AT24C08D-PUM
AT24C08D-STUM-T
Matte Tin
(Lead-free/Halogen-free)
AT24C08D-CUM-T
AT24C08D-UUM0B-T(1)
SnAgCu Ball
(Lead-free/Halogen-free)
AT24C08D-UUM1B-T(1)
AT24C08D-WWU11M(2)
Notes:
1.
2.
N/A
Industrial
Temperature
(-40C to 85C)
5,000 per Reel
4U-4
Tape and Reel
Wafer Sale
Note 2
WLCSP Package:

This device includes a backside coating to increase product robustness.

CAUTION: Exposure to ultraviolet (UV) light can degrade the data stored in the EEPROM cells.
Therefore, customers who use a WLCSP product must ensure that exposure to ultraviolet light
does not occur.
For wafer sales, please contact Atmel Sales.
Package Type
18
8S1
8-lead, 0.15” wide, Plastic Gull Wing Small Outline (JEDEC SOIC)
8X
8-lead, 4.40mm body, Plastic Thin Shrink Small Outline Package (TSSOP)
8MA2
8-pad, 2.00mm x 3.00mm x 0.60mm body, 0.50mm Pitch, Ultra Thin Dual Flat No Lead (UDFN)
8P3
8-lead, 0.30" wide, Plastic Dual In-line Package (PDIP)
5TS1
5-lead, 1.60mm body, Plastic Thin Shrink Small Outline (SOT23)
8U3-1
8-ball, 1.50mm x 2.00mm body, 0.50mm pitch, Very thin Fine Ball Grid Array (VFBGA)
4U-4
4-ball, 2 x 2 Grid Array, 0.40mm pitch, Wafer Level Chip Scale Package (WLCSP)
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
11.
Part Markings
AT24C08D: Package Marking Information
8-lead TSSOP
8-lead SOIC
8-lead PDIP
8-pad UDFN
2.0 x 3.0 mm Body
###
H%@
YXX
ATHYWW
###% @
AAAAAAA
ATMLHYWW
###%
@
AAAAAAAA
5-lead SOT-23
8-ball VFBGA
ATMLUYWW
###%
@
AAAAAAAA
4-ball WLCSP
1.5 x 2.0 mm Body
###%U
Top Mark
XX
###U
YMXX
YMXX
Note 1:
Bottom Mark
PIN 1
designates pin 1
Note 2: Package drawings are not to scale
Catalog Number Truncation
AT24C08D
Truncation Code ###: 08D
Date Codes
Y = Year
3: 2013
4: 2014
5: 2015
6: 2016
Voltages
7: 2017
8: 2018
9: 2019
0: 2020
M = Month
A: January
B: February
...
L: December
WW = Work Week of Assembly
02: Week 2
04: Week 4
...
52: Week 52
Country of Assembly
Lot Number
@ = Country of Assembly
AAA...A = Atmel Wafer Lot Number
% = Minimum Voltage
M: 1.7V min
Grade/Lead Finish Material
H: Industrial/NiPdAu
U: Industrial/Matte Tin/SnAgCu
Trace Code
Atmel Truncation
XX = Trace Code (Atmel Lot Numbers Correspond to Code)
Example: AA, AB.... YZ, ZZ
AT: Atmel
ATM: Atmel
ATML: Atmel
2/14/13
TITLE
Package Mark Contact:
[email protected]
24C08DSM, AT24C08D Package Marking Information
DRAWING NO.
REV.
24C08DSM
B
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
19
12.
Packaging Information
12.1
8S1 — 8-lead JEDEC SOIC
C
1
E
E1
L
N
Ø
TOP VIEW
END VIEW
e
b
COMMON DIMENSIONS
(Unit of Measure = mm)
A
A1
SYMBOL
A
SIDE VIEW
Notes: This drawing is for general information only.
Refer to JEDEC Drawing MS-012, Variation AA
for proper dimensions, tolerances, datums, etc.
MAX
NOM
–
–
1.75
0.10
–
0.25
b
0.31
–
0.51
C
0.17
–
0.25
A1
D
MIN
D
4.90 BSC
E
6.00 BSC
E1
3.90 BSC
e
1.27 BSC
L
0.40
–
1.27
Ø
0°
–
8°
NOTE
3/6/2015
Package Drawing Contact:
[email protected]
20
TITLE
8S1, 8-lead (0.150” Wide Body), Plastic Gull Wing
Small Outline (JEDEC SOIC)
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
GPC
SWB
DRAWING NO.
REV.
8S1
H
12.2
8X — 8-lead TSSOP
C
1
Pin 1 indicator
this corner
E1
E
L1
N
L
Top View
End View
A
b
A1
e
COMMON DIMENSIONS
(Unit of Measure = mm)
A2
D
SYMBOL
Side View
Notes:
1. This drawing is for general information only.
Refer to JEDEC Drawing MO-153, Variation AA, for proper
dimensions, tolerances, datums, etc.
2. Dimension D does not include mold Flash, protrusions or gate
burrs. Mold Flash, protrusions and gate burrs shall not exceed
0.15mm (0.006in) per side.
3. Dimension E1 does not include inter-lead Flash or protrusions.
Inter-lead Flash and protrusions shall not exceed 0.25mm
(0.010in) per side.
4. Dimension b does not include Dambar protrusion.
Allowable Dambar protrusion shall be 0.08mm total in excess
of the b dimension at maximum material condition. Dambar
cannot be located on the lower radius of the foot. Minimum
space between protrusion and adjacent lead is 0.07mm.
5. Dimension D and E1 to be determined at Datum Plane H.
MIN
NOM
MAX
A
-
-
1.20
A1
0.05
-
0.15
NOTE
A2
0.80
1.00
1.05
D
2.90
3.00
3.10
2, 5
E
6.40 BSC
E1
4.30
4.40
4.50
3, 5
b
0.19
0.25
0.30
4
e
L
0.65 BSC
0.45
L1
C
0.60
0.75
1.00 REF
0.09
-
0.20
2/27/14
TITLE
Package Drawing Contact:
[email protected]
8X, 8-lead 4.4mm Body, Plastic Thin
Shrink Small Outline Package (TSSOP)
GPC
TNR
DRAWING NO.
8X
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
REV.
E
21
12.3
8MA2 — 8-pad UDFN
E
1
8
Pin 1 ID
2
7
3
6
4
5
D
C
TOP VIEW
A2
SIDE VIEW
A
C
A1
E2
b (8x)
8
7
1
D2
6
3
5
4
e (6x)
K
L (8x)
BOTTOM VIEW
Notes:
COMMON DIMENSIONS
(Unit of Measure = mm)
2
Pin#1 ID
1. This drawing is for general information only. Refer to
Drawing MO-229, for proper dimensions, tolerances,
datums, etc.
2. The Pin #1 ID is a laser-marked feature on Top View.
3. Dimensions b applies to metallized terminal and is
measured between 0.15 mm and 0.30 mm from the
terminal tip. If the terminal has the optional radius on
the other end of the terminal, the dimension should
not be measured in that radius area.
4. The Pin #1 ID on the Bottom View is an orientation
feature on the thermal pad.
SYMBOL
MIN
NOM
MAX
A
0.50
0.55
0.60
A1
0.0
0.02
0.05
A2
-
-
0.55
D
1.90
2.00
2.10
D2
1.40
1.50
1.60
E
2.90
3.00
3.10
E2
1.20
1.30
1.40
b
0.18
0.25
0.30
C
L
3
0.152 REF
0.35
e
K
NOTE
0.40
0.45
0.50 BSC
0.20
-
-
11/2/15
Package Drawing Contact:
[email protected]
22
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
TITLE
8MA2, 8-pad 2 x 3 x 0.6mm Body, Thermally
Enhanced Plastic Ultra Thin Dual Flat No-Lead
Package (UDFN)
GPC
DRAWING NO.
REV.
YNZ
8MA2
H
12.4
8P3 — 8-lead PDIP
E
1
E1
.381
Gage Plane
N
Top View
c
eA
End View
COMMON DIMENSIONS
(Unit of Measure = mm)
D
e
D1
A2 A
A1
b2
L
b3
b v
4 PLCS
Side View
0.254 m C
MIN
NOM
MAX
A
-
-
5.334
A1
0.381
A2
2.921
3.302
4.953
b
0.356
0.457
0.559
5
b2
1.143
1.524
1.778
6
b3
0.762
0.991
1.143
6
c
0.203
0.254
0.356
D
9.017
9.271
10.160
3
D1
0.127
0.000
0.000
3
E
7.620
7.874
8.255
4
E1
6.096
6.350
7.112
3
3.810
2
SYMBOL
-
e
Notes:
2
-
2.540 BSC
eA
L
NOTE
7.620 BSC
2.921
3.302
4
1. This drawing is for general information only; refer to JEDEC Drawing MS-001, Variation BA for additional information.
2. Dimensions A and L are measured with the package seated in JEDEC seating plane Gauge GS-3.
3. D, D1 and E1 dimensions do not include mold Flash or protrusions. Mold Flash or protrusions shall not exceed 0.010 inch.
4. E and eA measured with the leads constrained to be perpendicular to datum.
5. Pointed or rounded lead tips are preferred to ease insertion.
6. b2 and b3 maximum dimensions do not include Dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25 mm).
07/31/14
Package Drawing Contact:
[email protected]
TITLE
GPC
DRAWING NO.
8P3, 8-lead, 0.300” Wide Body, Plastic Dual
In-line Package (PDIP)
PTC
8P3
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
REV.
E
23
12.5
5TS1 — 5-lead SOT23
e1
C
4
5
E1
C
L
E
L1
1
3
2
END VIEW
TOP VIEW
b
A2
SEATING
PLANE
e
A
A1
D
SIDE VIEW
COMMON DIMENSIONS
(Unit of Measure = mm)
1. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash,
protrusions or gate burrs shall not exceed 0.15 mm per end. Dimension E1 does
not include interlead flash or protrusion. Interlead flash or protrusion shall not
exceed 0.15 mm per side.
2. The package top may be smaller than the package bottom. Dimensions D and E1
are determined at the outermost extremes of the plastic body exclusive of mold
flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch
between the top and bottom of the plastic body.
3. These dimensions apply to the flat section of the lead between 0.08 mm and 0.15
mm from the lead tip.
4. Dimension "b" does not include dambar protrusion. Allowable dambar protrusion
shall be 0.08 mm total in excess of the "b" dimension at maximum material
condition. The dambar cannot be located on the lower radius of the foot. Minimum
space between protrusion and an adjacent lead shall not be less than 0.07 mm.
This drawing is for general information only. Refer to JEDEC
Drawing MO-193, Variation AB for additional information.
SYMBOL
MIN
A
A1
A2
c
D
E
E1
L1
e
e1
b
0.00
0.70
0.08
NOM
0.90
2.90 BSC
2.80 BSC
1.60 BSC
0.60 REF
0.95 BSC
1.90 BSC
0.30
-
MAX
1.00
0.10
1.00
0.20
0.50
NOTE
3
1,2
1,2
1,2
3,4
5/31/12
Package Drawing Contact:
[email protected]
24
TITLE
GPC
5TS1, 5-lead 1.60mm Body, Plastic Thin
Shrink Small Outline Package (Shrink SOT)
TSZ
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
DRAWING NO.
5TS1
REV.
D
12.6
8U3-1 — 8-ball VFBGA
E
D
2. b
PIN 1 BALL PAD CORNER
A1
A2
TOP VIEW
A
SIDE VIEW
PIN 1 BALL PAD CORNER
3
2
1
4
d
(d1)
8
7
6
5
COMMON DIMENSIONS
(Unit of Measure - mm)
e
(e1)
SYMBOL
MIN
NOM
MAX
BOTTOM VIEW
A
0.73
0.79
0.85
8 SOLDER BALLS
A1
0.09
0.14
0.19
A2
0.40
0.45
0.50
Notes:
b
0.20
0.25
0.30
1. This drawing is for general information only.
D
2. Dimension ‘b’ is measured at maximum solder ball diameter.
3. Solder ball composition shall be 95.5Sn-4.0Ag-.5Cu.
NOTE
2
1.50 BSC
E
2.0 BSC
e
0.50 BSC
e1
0.25 REF
d
1.00 BSC
d1
0.25 REF
6/11/13
Package Drawing Contact:
[email protected]
TITLE
GPC
DRAWING NO.
8U3-1, 8-ball, 1.50mm x 2.00mm body, 0.50mm pitch,
Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA)
GXU
8U3-1
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
REV.
F
25
12.7
4U-4 — 4-ball WLCSP
k 0.015
TOP VIEW
A
2
1
A1 CORNER
(4X)
BOTTOM VIEW
2
1
A1 CORNER
A
A
E
e1
B
B
d1
B
D
SIDE VIEW
db (4X)
d0.015 m C
v d 0.05 m C A B
A2
A
SEATING PLANE
COMMON DIMENSIONS
(Unit of Measure = mm)
C
k 0.075
A1
C
PIN ASSIGNMENT MATRIX
A
B
SYMBOL
MIN
TYP
MAX
A
0.260
0.295
0.330
A1
—
0.080
—
A2
—
0.215
—
Contact Atmel for Details
1
2
D
VCC
VSS
d1
0.400 BSC
E
Contact Atmel for Details
SCL
SDA
e1
b
NOTE
3
0.400 BSC
—
0.162
—
Note: 1. Dimensions are NOT to scale.
2. Solder ball composition is 95.5Sn-4.0Ag-0.5Cu.
3. Product offered with Back Side Coating (BSC)
8/28/15
Package Drawing Contact:
[email protected]
26
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
TITLE
4U-4, 4-ball 2x2 Array, 0.40mm Pitch
Wafer Level Chip Scale Package (WLCSP) with BSC
GPC
DRAWING NO.
REV.
GEG
4U-4
F
13.
Revision History
Doc. No.
Date
8880E
01/2016
8880D
04/2015
8880C
01/2015
Comments
Updated 8MA2 and 4U-4 package drawings.
Added part number AT24C08D-UUM1B-T to the ordering information section.
Updated the 8S1 package drawing.
Added the 100kHz timing set for reference, the UDFN expanded quantity option, and the figure
for “System Configuration Using 2-Wire Serial EEPROMs”.
Updated the package outline drawings and the ordering information section.
8880B
04/2014
Grammatical corrections, correct standby current from 1μA to 0.8μA in the features list, and
refine sections “Current Address Read”, “Random Read”, “Sequential Read”, and “Device
Reset”.
Updated datasheet status from preliminary to complete release.
8880A
02/2014
Initial document release.
AT24C08D [DATASHEET]
Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016
27
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© 2016 Atmel Corporation. / Rev.: Atmel-8880E-SEEPROM-AT24C08D-Datasheet_012016.
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