24LC01B-I/MS [MICROCHIP]

1K I2C™ Serial EEPROM; 1K I2C ™串行EEPROM
24LC01B-I/MS
型号: 24LC01B-I/MS
厂家: MICROCHIP    MICROCHIP
描述:

1K I2C™ Serial EEPROM
1K I2C ™串行EEPROM

存储 内存集成电路 光电二极管 可编程只读存储器 电动程控只读存储器 电可擦编程只读存储器 时钟
文件: 总34页 (文件大小:585K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
24AA01/24LC01B  
1K I2CSerial EEPROM  
Description:  
Device Selection Table  
Part  
Number  
VCC  
Range  
Max. Clock  
Frequency  
Temp.  
Ranges  
The Microchip Technology Inc. 24AA01/24LC01B  
(24XX01*) is a 1 Kbit Electrically Erasable PROM. The  
device is organized as one block of 128 x 8-bit memory  
with a 2-wire serial interface. Low-voltage design  
permits operation down to 1.7V with standby and active  
currents of only 1 μA and 1 mA, respectively. The  
24XX01 also has a page write capability for up to 8  
bytes of data. The 24XX01 is available in the standard  
8-pin PDIP, surface mount SOIC, TSSOP, 2x3 DFN,  
2x3 TDFN and MSOP packages, and is also available  
in the 5-lead SOT-23 and SC-70 packages.  
24AA01  
1.7-5.5  
2.5-5.5  
400 kHz(1)  
400 kHz  
I
24LC01B  
I, E  
Note 1: 100 kHz for VCC <2.5V.  
Features:  
• Single Supply with Operation down to 1.7V for  
24AAXX Devices, 2.5V for 24LCXX Devices  
• Low-Power CMOS Technology:  
- Read current 1 mA, max.  
Package Types  
- Standby current 1 μA, max. (I-temp)  
• 2-Wire Serial Interface, I2C™ Compatible  
• Schmitt Trigger inputs for Noise Suppression  
• Output Slope Control to eliminate Ground Bounce  
• 100 kHz and 400 kHz Compatibility  
• Page Write Time 3 ms, typical  
SOIC, TSSOP  
PDIP, MSOP  
A0  
1
8
VCC  
1
2
3
4
8
7
6
5
A0  
A1  
VCC  
WP  
A1  
A2  
2
3
4
7
6
5
WP  
SCL  
A2  
SCL  
SDA  
VSS  
SDA VSS  
• Hardware Write-Protect  
SOT-23/SC-70  
DFN/TDFN  
• ESD Protection >4,000V  
• More than 1 Million Erase/Write Cycles  
• Data Retention >200 Years  
1
VCC  
WP  
A0  
8
WP  
Vcc  
1
5
4
SCL  
7
6
5
2
3
4
A1  
SCL  
SDA  
2
3
A2  
VSS  
Vss  
• Factory Programmable Available  
• Packages include 8-lead PDIP, SOIC, TSSOP,  
DFN, TDFN, MSOP, 5-lead SOT-23 and SC-70  
SDA  
• Pb-free and RoHS Compliant  
Temperature Ranges:  
Note:  
Pins A0, A1 and A2 are not used by the 24XX01 (no  
internal connections).  
- Industrial (I): -40°C to +85°C  
- Automotive (E): -40°C to +125°C  
Block Diagram  
WP  
HV Generator  
I/O  
Control  
Logic  
Memory  
Control  
Logic  
EEPROM  
Array  
XDEC  
Page Latches  
I/O  
SCL  
YDEC  
SDA  
VCC  
VSS  
Sense Amp.  
R/W Control  
© 2009 Microchip Technology Inc.  
DS21711J-page 1  
24AA01/24LC01B  
1.0  
ELECTRICAL CHARACTERISTICS  
(†)  
Absolute Maximum Ratings  
VCC.............................................................................................................................................................................6.5V  
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.3V to VCC +1.0V  
Storage temperature ...............................................................................................................................-65°C to +150°C  
Ambient temperature with power applied................................................................................................-40°C to +125°C  
ESD protection on all pins ......................................................................................................................................................≥ 4 kV  
† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to  
the device. This is a stress rating only and functional operation of the device at those or any other conditions  
above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating  
conditions for extended periods may affect device reliability.  
TABLE 1-1:  
DC CHARACTERISTICS  
Industrial (I):  
TA = -40°C to +85°C, VCC = +1.7V to +5.5V  
DC CHARACTERISTICS  
Automotive (E): TA = -40°C to +125°C, VCC = +2.5V to +5.5V  
Param.  
Sym.  
No.  
Characteristic  
Min.  
Typ.  
Max.  
Units  
Conditions  
D1  
D2  
D3  
D4  
VIH  
WP, SCL and SDA pins  
High-level input voltage  
Low-level input voltage  
V
0.7 VCC  
VIL  
0.3 VCC  
V
VHYS  
Hysteresis of Schmitt  
Trigger inputs  
0.05 VCC  
V
(Note)  
D5  
D6  
D7  
D8  
VOL  
ILI  
Low-level output voltage  
Input leakage current  
Output leakage current  
0.40  
±1  
V
IOL = 3.0 mA, VCC = 2.5V  
VIN = VSS or VCC  
μA  
μA  
pF  
ILO  
±1  
VOUT = VSS or VCC  
CIN,  
Pin capacitance  
10  
VCC = 5.0V (Note)  
COUT  
(all inputs/outputs)  
TA = 25°C, FCLK = 1 MHz  
D9  
ICC write Operating current  
0.1  
3
1
mA  
mA  
VCC = 5.5V, SCL = 400 kHz  
D10  
D11  
ICC read  
0.05  
ICCS  
Standby current  
0.01  
1
5
μΑ  
μΑ  
Industrial  
Automotive  
SDA = SCL = VCC  
WP = VSS  
Note:  
This parameter is periodically sampled and not 100% tested.  
DS21711J-page 2  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
TABLE 1-2:  
AC CHARACTERISTICS  
Industrial (I):  
TA = -40°C to +85°C, VCC = +1.7V to +5.5V  
AC CHARACTERISTICS  
Automotive (E): TA = -40°C to +125°C, VCC = +2.5V to +5.5V  
Param.  
Sym.  
No.  
Characteristic  
Clock frequency  
Min.  
Typ.  
Max.  
Units  
Conditions  
1
FCLK  
THIGH  
TLOW  
TR  
400  
100  
kHz 2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
2.5V VCC 5.5V  
2
Clock high time  
Clock low time  
600  
4000  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
1.7V VCC <2.5V (24AA01)  
3
1300  
4700  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
4
SDA and SCL rise time  
(Note 1)  
300  
1000  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
5
TF  
SDA and SCL fall time  
300  
(Note 1)  
6
THD:STA Start condition hold time  
600  
4000  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
7
TSU:STA Start condition setup  
time  
600  
4700  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
8
THD:DAT Data input hold time  
0
(Note 2)  
9
TSU:DAT Data input setup time  
100  
250  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
10  
11  
12  
TSU:STO Stop condition setup  
time  
600  
4000  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
TAA  
Output valid from clock  
(Note 2)  
900  
3500  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
TBUF  
Bus free-time: Time the  
bus must be free before  
a new transmission can  
start  
1300  
4700  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
13  
14  
TOF  
TSP  
Output fall time from VIH 20+0.1CB  
250  
250  
ns  
ns  
2.5V VCC 5.5V  
1.7V VCC < 2.5V (24AA01)  
minimum to VIL  
maximum  
Input filter spike  
suppression  
50  
(Notes 1 and 3)  
(SDA and SCL pins)  
15  
16  
TWC  
Write cycle time  
(byte or page)  
5
ms  
Endurance  
1M  
cycles 25°C, (Note 4)  
Note 1: Not 100% tested. CB = total capacitance of one bus line in pF.  
2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region  
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.  
3: The combined TSP and VHYS specifications are due to new Schmitt Trigger inputs which provide improved  
noise spike suppression. This eliminates the need for a TI specification for standard operation.  
4: This parameter is not tested but ensured by characterization. For endurance estimates in a specific  
application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site  
at www.microchip.com.  
© 2009 Microchip Technology Inc.  
DS21711J-page 3  
24AA01/24LC01B  
FIGURE 1-1:  
BUS TIMING DATA  
5
4
2
3
SCL  
7
8
9
10  
6
SDA  
IN  
14  
12  
11  
SDA  
OUT  
FIGURE 1-2:  
BUS TIMING START/STOP  
D4  
SCL  
SDA  
6
7
10  
Start  
Stop  
DS21711J-page 4  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
2.0  
PIN DESCRIPTIONS  
The descriptions of the pins are listed in Table 2-1.  
TABLE 2-1: PIN FUNCTION TABLE  
Name  
PDIP  
SOIC TSSOP  
DFN  
TDFN MSOP SOT23  
SC-70  
Description  
Not Connected  
A0  
A1  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
2
2
Not Connected  
A2  
Not Connected  
VSS  
SDA  
SCL  
WP  
VCC  
Ground  
3
3
Serial Address/Data I/O  
Serial Clock  
1
1
5
5
Write-Protect Input  
+1.7V to 5.5V Power Supply  
4
4
2.1  
A0, A1, A2  
2.3  
Serial Clock (SCL)  
The A0, A1 and A2 pins are not used by the 24XX01.  
They may be left floating or tied to either VSS or VCC.  
The SCL input is used to synchronize the data transfer  
to and from the device.  
2.2  
Serial Address/Data Input/Output  
(SDA)  
2.4  
Write-Protect (WP)  
This pin must be connected to either VSS or VCC.  
The SDA input is a bidirectional pin used to transfer  
addresses and data into and out of the device. Since  
it is an open-drain terminal, the SDA bus requires a  
pull-up resistor to VCC (typical 10 kΩ for 100 kHz,  
2 kΩ for 400 kHz).  
If tied to VSS, normal memory operation is enabled  
(read/write the entire memory 00-7F).  
If tied to VCC, write operations are inhibited. The entire  
memory will be write-protected. Read operations are  
not affected.  
For normal data transfer, SDA is allowed to change  
only during SCL low. Changes during SCL high are  
reserved for indicating Start and Stop conditions.  
© 2009 Microchip Technology Inc.  
DS21711J-page 5  
24AA01/24LC01B  
4.4  
Data Valid (D)  
3.0  
FUNCTIONAL DESCRIPTION  
The state of the data line represents valid data when,  
after a Start condition, the data line is stable for the  
duration of the high period of the clock signal.  
The 24XX01 supports a bidirectional, 2-wire bus and  
data transmission protocol. A device that sends data  
onto the bus is defined as transmitter, while defining a  
device receiving data as a receiver. The bus has to be  
controlled by a master device which generates the  
Serial Clock (SCL), controls the bus access and  
generates the Start and Stop conditions, while the  
24XX01 works as slave. Both master and slave can  
operate as transmitter or receiver, but the master  
device determines which mode is activated.  
The data on the line must be changed during the low  
period of the clock signal. There is one clock pulse per  
bit of data.  
Each data transfer is initiated with a Start condition and  
terminated with a Stop condition. The number of data  
bytes transferred between the Start and Stop  
conditions is determined by the master device and is,  
theoretically, unlimited (although only the last sixteen  
will be stored when doing a write operation). When an  
overwrite does occur, it will replace data in a first-in  
first-out (FIFO) fashion.  
4.0  
BUS CHARACTERISTICS  
The following bus protocol has been defined:  
• Data transfer may be initiated only when the bus  
is not busy.  
4.5  
Acknowledge  
• During data transfer, the data line must remain  
stable whenever the clock line is high. Changes in  
the data line while the clock line is high will be  
interpreted as a Start or Stop condition.  
Each receiving device, when addressed, is obliged to  
generate an acknowledge after the reception of each  
byte. The master device must generate an extra clock  
pulse which is associated with this Acknowledge bit.  
Accordingly, the following bus conditions have been  
defined (Figure 4-1).  
Note:  
The 24XX01 does not generate any  
Acknowledge bits if an internal  
programming cycle is in progress.  
4.1  
Bus Not Busy (A)  
The device that acknowledges has to pull down the  
SDA line during the acknowledge clock pulse in such a  
way that the SDA line is stable-low during the high  
period of the acknowledge-related clock pulse. Of  
course, setup and hold times must be taken into  
account. During reads, a master must signal an end of  
data to the slave by not generating an Acknowledge bit  
on the last byte that has been clocked out of the slave.  
In this case, the slave (24XX01) will leave the data line  
high to enable the master to generate the Stop  
condition.  
Both data and clock lines remain high.  
4.2  
Start Data Transfer (B)  
A high-to-low transition of the SDA line while the clock  
(SCL) is high determines a Start condition. All  
commands must be preceded by a Start condition.  
4.3  
Stop Data Transfer (C)  
A low-to-high transition of the SDA line while the clock  
(SCL) is high determines a Stop condition. All  
operations must be ended with a Stop condition.  
FIGURE 4-1:  
DATA TRANSFER SEQUENCE ON THE SERIAL BUS  
(A)  
(B)  
(D)  
(D)  
(C) (A)  
SCL  
SDA  
Start  
Condition  
Stop  
Condition  
Address or  
Acknowledge  
Valid  
Data  
Allowed  
to Change  
DS21711J-page 6  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
FIGURE 5-1:  
CONTROL BYTE  
ALLOCATION  
5.0  
DEVICE ADDRESSING  
A control byte is the first byte received following the  
Start condition from the master device. The control byte  
consists of a four-bit control code. For the 24XX01, this  
is set as ‘1010’ binary for read and write operations.  
The next three bits of the control byte are “don’t cares”  
for the 24XX01.  
Read/Write Bit  
Block  
Select  
Bits  
Control Code  
The last bit of the control byte defines the operation to  
be performed. When set to ‘1’, a read operation is  
selected. When set to ‘0’, a write operation is selected.  
Following the Start condition, the 24XX01 monitors the  
SDA bus, checking the device type identifier being  
transmitted. Upon receiving a ‘1010’ code, the slave  
device outputs an Acknowledge signal on the SDA line.  
Depending on the state of the R/W bit, the 24XX01 will  
select a read or write operation.  
S
1
0
1
0
x
x
x
R/W ACK  
Slave Address  
Acknowledge Bit  
Start Bit  
x = “don’t care”  
Control  
Code  
Operation  
Block Select  
R/W  
Read  
Write  
1010  
1010  
Block Address  
Block Address  
1
0
FIGURE 5-2:  
ADDRESS SEQUENCE BIT ASSIGNMENTS  
Control Byte  
Address Low Byte  
A
0
A
6
x
x
x
1
0
1
0
x R/W  
Control  
Code  
Block  
Select  
bits  
x = “don’t care”  
© 2009 Microchip Technology Inc.  
DS21711J-page 7  
24AA01/24LC01B  
6.2  
Page Write  
6.0  
6.1  
WRITE OPERATION  
Byte Write  
The write control byte, word address and first data byte  
are transmitted to the 24XX01 in the same way as in a  
byte write. However, instead of generating a Stop  
condition, the master transmits up to 8 data bytes to the  
24XX01, which are temporarily stored in the on-chip  
page buffer and will be written into the memory once  
the master has transmitted a Stop condition. Upon  
receipt of each word, the four lower-order Address  
Pointer bits are internally incremented by ‘1’. The  
higher-order 7 bits of the word address remain  
constant. If the master should transmit more than 8  
words prior to generating the Stop condition, the  
address counter will roll over and the previously  
received data will be overwritten. As with the byte write  
operation, once the Stop condition is received, an  
internal write cycle will begin (Figure 6-2).  
Following the Start condition from the master, the  
device code (4 bits), the block address (3 bits, “don’t  
cares”) and the R/W bit, which is a logic-low, is placed  
onto the bus by the master transmitter. This indicates to  
the addressed slave receiver that a byte with a word  
address will follow after it has generated an Acknowl-  
edge bit during the ninth clock cycle. Therefore, the  
next byte transmitted by the master is the word address  
and will be written into the Address Pointer of the  
24XX01. After receiving another Acknowledge signal  
from the 24XX01, the master device will transmit the  
data word to be written into the addressed memory  
location. The 24XX01 acknowledges again and the  
master generates a Stop condition. This initiates the  
internal write cycle, and, during this time, the 24XX01  
will not generate Acknowledge signals (Figure 6-1).  
Note:  
Page write operations are limited to writing  
bytes within single physical page  
a
regardless of the number of bytes  
actually being written. Physical page  
boundaries start at addresses that are  
integer multiples of the page buffer size (or  
‘page size’) and end at addresses that are  
integer multiples of [page size – 1]. If a  
page write command attempts to write  
across a physical page boundary, the  
result is that the data wraps around to the  
beginning of the current page (overwriting  
data previously stored there), instead of  
being written to the next page, as might be  
expected. It is therefore necessary for the  
application software to prevent page write  
operations that would attempt to cross a  
page boundary.  
6.3  
Write Protection  
The WP pin allows the user to write-protect the entire  
array (00-7F) when the pin is tied to VCC. If tied to VSS,  
the write protection is disabled.  
FIGURE 6-1:  
BYTE WRITE  
S
T
A
R
T
S
Bus Activity  
Master  
Control  
Byte  
Word  
Address  
T
O
P
Data  
x
x
x
0
SDA Line  
1
0
1
0
S
P
A
C
K
A
C
K
A
C
K
Block  
Select  
Bits  
Bus Activity  
x= “don’t care”  
DS21711J-page 8  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
FIGURE 6-2:  
PAGE WRITE  
S
S
T
T
Bus Activity  
Master  
Control  
Byte  
Word  
Address (n)  
A
O
Data (n)  
Data (n + 1)  
Data (n + 7)  
R
P
T
x
x x  
SDA Line  
10 10  
0
S
P
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
Block  
Select  
Bits  
Bus Activity  
x= “don’t care”  
© 2009 Microchip Technology Inc.  
DS21711J-page 9  
24AA01/24LC01B  
7.0  
ACKNOWLEDGE POLLING  
Since the device will not acknowledge during a write  
cycle, this can be used to determine when the cycle is  
complete (this feature can be used to maximize bus  
throughput). Once the Stop condition for a write  
command has been issued from the master, the device  
initiates the internally-timed write cycle. ACK polling  
can then be initiated immediately. This involves the  
master sending a Start condition followed by the control  
byte for a write command (R/W = 0). If the device is still  
busy with the write cycle, no ACK will be returned. If the  
cycle is complete, the device will return the ACK and  
the master can then proceed with the next read or write  
command. See Figure 7-1 for a flow diagram of this  
operation.  
FIGURE 7-1:  
ACKNOWLEDGE POLLING  
FLOW  
Send  
Write Command  
Send Stop  
Condition to  
Initiate Write Cycle  
Send Start  
Send Control Byte  
with R/W = 0  
Did Device  
Acknowledge  
(ACK = 0)?  
No  
Yes  
Next  
Operation  
DS21711J-page 10  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
8.3  
Sequential Read  
8.0  
READ OPERATION  
Sequential reads are initiated in the same way as a  
random read, except that once the 24XX01 transmits  
the first data byte, the master issues an acknowledge  
(as opposed to a Stop condition in a random read). This  
directs the 24XX01 to transmit the next sequentially  
addressed 8-bit word (Figure 8-3).  
Read operations are initiated in the same way as write  
operations, with the exception that the R/W bit of the  
slave address is set to ‘1’. There are three basic types  
of read operations: current address read, random read  
and sequential read.  
8.1  
Current Address Read  
To provide sequential reads the 24XX01 contains an  
internal Address Pointer which is incremented by one  
at the completion of each operation. This Address  
Pointer allows the entire memory contents to be serially  
read during one operation.  
The 24XX01 contains an address counter that  
maintains the address of the last word accessed,  
internally incremented by ‘1’. Therefore, if the previous  
access (either a read or write operation) was to  
address n, the next current address read operation  
would access data from address n + 1. Upon receipt of  
the slave address with R/W bit set to ‘1’, the 24XX01  
issues an acknowledge and transmits the 8-bit data  
word. The master will not acknowledge the transfer, but  
does generate a Stop condition and the 24XX01  
discontinues transmission (Figure 8-1).  
8.4  
Noise Protection  
The 24XX01 employs a VCC threshold detector circuit  
which disables the internal erase/write logic if the VCC  
is below 1.5V at nominal conditions.  
The SCL and SDA inputs have Schmitt Trigger and  
filter circuits which suppress noise spikes to assure  
proper device operation even on a noisy bus.  
8.2  
Random Read  
Random read operations allow the master to access  
any memory location in a random manner. To perform  
this type of read operation, the word address must first  
be set. This is accomplished by sending the word  
address to the 24XX01 as part of a write operation.  
Once the word address is sent, the master generates a  
Start condition following the acknowledge. This  
terminates the write operation, but not before the inter-  
nal Address Pointer is set. The master then issues the  
control byte again, but with the R/W bit set to a ‘1’. The  
24XX01 will then issue an acknowledge and transmits  
the 8-bit data word. The master will not acknowledge  
the transfer, but does generate a Stop condition and the  
24XX01 discontinues transmission (Figure 8-2).  
FIGURE 8-1:  
CURRENT ADDRESS READ  
S
Bus Activity  
Master  
T
A
R
Control  
Byte  
S
T
Data (n)  
O
P
T
x x  
1 0 1 0  
x
1
SDA Line  
S
P
A
C
K
N
o
Bus Activity  
Block  
Select  
Bits  
A
C
K
x= “don’t care”  
© 2009 Microchip Technology Inc.  
DS21711J-page 11  
24AA01/24LC01B  
FIGURE 8-2:  
RANDOM READ  
S
S
T
A
R
T
T
A
R
T
S
T
Bus Activity  
Master  
Control  
Byte  
Word  
Address (n)  
Control  
Byte  
Data (n)  
O
P
xxx  
xxx  
1
1010  
S 1010  
P
0
S
SDA Line  
A
C
K
A
C
K
A
C
K
N
o
Block  
Select  
Bits  
Block  
Select  
Bits  
Bus Activity  
A
C
K
x = “don’t care”  
FIGURE 8-3:  
SEQUENTIAL READ  
S
T
Bus Activity  
Master  
Control  
Byte  
O
P
Data (n)  
Data (n + 1)  
Data (n + 2)  
Data (n + x)  
SDA Line  
P
1
A
C
K
A
A
A
C
K
N
o
C
C
Bus Activity  
K
K
A
C
K
DS21711J-page 12  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
9.0  
9.1  
PACKAGING INFORMATION  
Package Marking Information  
8-Lead PDIP (300 mil)  
Example:  
24LC01B  
XXXXXXXX  
T/XXXNNN  
I/P  
13F  
e
3
YYWW  
0527  
8-Lead SOIC (3.90 mm)  
Example:  
24LC01BI  
XXXXXXXT  
e
3
XXXXYYWW  
SN  
0527  
NNN  
13F  
Example:  
8-Lead TSSOP  
4L1B  
I527  
13F  
XXXX  
TYWW  
NNN  
Example:  
8-Lead MSOP  
XXXXT  
4L1BI  
52713F  
YWWNNN  
Example:  
5-Lead SOT-23  
XXNN  
M13F  
© 2009 Microchip Technology Inc.  
DS21711J-page 13  
24AA01/24LC01B  
5-Lead SC-70  
Example:  
B13F  
XXNN  
8-Lead 2x3 DFN  
Example:  
XXX  
YWW  
NN  
214  
527  
13  
8-Lead 2x3 TDFN  
Example:  
XXX  
YWW  
NN  
A14  
527  
13  
1st Line Marking Codes  
DFN  
Part Number  
SOT-23  
TDFN  
SC-70  
TSSOP MSOP  
I Temp. E Temp. I Temp. E Temp. I Temp. E Temp. I Temp. E Temp.  
24AA01  
4A01  
4L1B  
4A01T  
4L1BT  
B1NN  
M1NN  
211  
214  
A11  
A14  
B2NN  
B1NN  
24LC01B  
N1NN  
215  
A15  
B3NN  
Note:  
T = Temperature grade (I, E)  
NN = Alphanumeric traceability code  
Legend: XX...X Part number or part number code  
T
Temperature (I, E)  
Y
Year code (last digit of calendar year)  
Year code (last 2 digits of calendar year)  
Week code (week of January 1 is week ‘01’)  
Alphanumeric traceability code (2 characters for small packages)  
Pb-free JEDEC designator for Matte Tin (Sn)  
YY  
WW  
NNN  
e
3
Note: For very small packages with no room for the Pb-free JEDEC designator  
e
3
, the marking will only appear on the outer carton or reel label.  
Note: In the event the full Microchip part number cannot be marked on one line, it will  
be carried over to the next line, thus limiting the number of available  
characters for customer-specific information.  
Note:  
Please visit www.microchip.com/Pbfree for the latest information on Pb-free conversion.  
*Standard OTP marking consists of Microchip part number, year code, week code, and traceability code.  
DS21711J-page 14  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢍꢎꢄꢈꢆꢏꢐꢁꢂꢋꢐꢃꢆꢑꢇꢒꢆMꢆꢓꢔꢔꢆꢕꢋꢈꢆꢖꢗꢅꢘꢆꢙꢇꢍꢏꢇꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
N
NOTE 1  
E1  
3
1
2
D
E
A2  
A
L
A1  
c
e
eB  
b1  
b
6ꢄꢃ&!  
ꢚ7,8.ꢐ  
ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢅ9ꢃ'ꢃ&!  
ꢔꢚ7  
7:ꢔ  
<
ꢁꢀꢕꢕꢅ1ꢐ,  
M
ꢁꢀ-ꢕ  
M
ꢁ-ꢀꢕ  
ꢁꢎꢘꢕ  
ꢁ-?ꢘ  
ꢁꢀ-ꢕ  
ꢁꢕꢀꢕ  
ꢁꢕ?ꢕ  
ꢁꢕꢀ<  
M
ꢔꢗ;  
7"')ꢈꢉꢅꢋ%ꢅꢂꢃꢄ!  
ꢂꢃ&ꢌꢍ  
ꢓꢅ&ꢋꢅꢐꢈꢆ&ꢃꢄꢑꢅꢂꢇꢆꢄꢈ  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅꢙꢍꢃꢌ4ꢄꢈ!!  
1ꢆ!ꢈꢅ&ꢋꢅꢐꢈꢆ&ꢃꢄꢑꢅꢂꢇꢆꢄꢈ  
ꢐꢍꢋ"ꢇ#ꢈꢉꢅ&ꢋꢅꢐꢍꢋ"ꢇ#ꢈꢉꢅ>ꢃ#&ꢍ  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅ>ꢃ#&ꢍ  
: ꢈꢉꢆꢇꢇꢅ9ꢈꢄꢑ&ꢍ  
7
ꢗꢎ  
ꢗꢀ  
.
.ꢀ  
9
)ꢀ  
)
ꢈ1  
M
ꢁꢎꢀꢕ  
ꢁꢀꢛꢘ  
M
ꢁꢀꢀꢘ  
ꢁꢕꢀꢘ  
ꢁꢎꢛꢕ  
ꢁꢎꢖꢕ  
ꢁ-ꢖ<  
ꢁꢀꢀꢘ  
ꢁꢕꢕ<  
ꢁꢕꢖꢕ  
ꢁꢕꢀꢖ  
M
ꢁ-ꢎꢘ  
ꢁꢎ<ꢕ  
ꢁꢖꢕꢕ  
ꢁꢀꢘꢕ  
ꢁꢕꢀꢘ  
ꢁꢕꢜꢕ  
ꢁꢕꢎꢎ  
ꢁꢖ-ꢕ  
ꢙꢃꢓꢅ&ꢋꢅꢐꢈꢆ&ꢃꢄꢑꢅꢂꢇꢆꢄꢈ  
9ꢈꢆ#ꢅꢙꢍꢃꢌ4ꢄꢈ!!  
6ꢓꢓꢈꢉꢅ9ꢈꢆ#ꢅ>ꢃ#&ꢍ  
9ꢋ*ꢈꢉꢅ9ꢈꢆ#ꢅ>ꢃ#&ꢍ  
: ꢈꢉꢆꢇꢇꢅꢝꢋ*ꢅꢐꢓꢆꢌꢃꢄꢑꢅꢅꢏ  
ꢛꢗꢊꢃꢉꢜ  
ꢀꢁ ꢂꢃꢄꢅꢀꢅ ꢃ!"ꢆꢇꢅꢃꢄ#ꢈ$ꢅ%ꢈꢆ&"ꢉꢈꢅ'ꢆꢊꢅ ꢆꢉꢊ(ꢅ)"&ꢅ'"!&ꢅ)ꢈꢅꢇꢋꢌꢆ&ꢈ#ꢅ*ꢃ&ꢍꢅ&ꢍꢈꢅꢍꢆ&ꢌꢍꢈ#ꢅꢆꢉꢈꢆꢁ  
ꢎꢁ ꢏꢅꢐꢃꢑꢄꢃ%ꢃꢌꢆꢄ&ꢅ,ꢍꢆꢉꢆꢌ&ꢈꢉꢃ!&ꢃꢌꢁ  
-ꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄ!ꢅꢒꢅꢆꢄ#ꢅ.ꢀꢅ#ꢋꢅꢄꢋ&ꢅꢃꢄꢌꢇ"#ꢈꢅ'ꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢁꢅꢔꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢅ!ꢍꢆꢇꢇꢅꢄꢋ&ꢅꢈ$ꢌꢈꢈ#ꢅꢁꢕꢀꢕ/ꢅꢓꢈꢉꢅ!ꢃ#ꢈꢁ  
ꢖꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢃꢄꢑꢅꢆꢄ#ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢃꢄꢑꢅꢓꢈꢉꢅꢗꢐꢔ.ꢅ0ꢀꢖꢁꢘꢔꢁ  
1ꢐ,2ꢅ1ꢆ!ꢃꢌꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄꢁꢅꢙꢍꢈꢋꢉꢈ&ꢃꢌꢆꢇꢇꢊꢅꢈ$ꢆꢌ&ꢅ ꢆꢇ"ꢈꢅ!ꢍꢋ*ꢄꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ!ꢁ  
ꢔꢃꢌꢉꢋꢌꢍꢃꢓ ꢌꢍꢄꢋꢇꢋꢑꢊ ꢒꢉꢆ*ꢃꢄꢑ ,ꢕꢖꢞꢕꢀ<1  
© 2009 Microchip Technology Inc.  
DS21711J-page 15  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆ ꢕꢄꢈꢈꢆ!ꢎꢊꢈꢋꢐꢃꢆꢑ ꢛꢒꢆMꢆꢛꢄ""ꢗ#$ꢆꢓ%&ꢔꢆꢕꢕꢆꢖꢗꢅꢘꢆꢙ !ꢏ'ꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
D
e
N
E
E1  
NOTE 1  
1
2
3
α
h
b
h
c
φ
A2  
A
L
A1  
L1  
β
6ꢄꢃ&!  
ꢔꢚ99ꢚꢔ.ꢙ.ꢝꢐ  
ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢅ9ꢃ'ꢃ&!  
ꢔꢚ7  
7:ꢔ  
ꢔꢗ;  
7"')ꢈꢉꢅꢋ%ꢅꢂꢃꢄ!  
ꢂꢃ&ꢌꢍ  
7
<
ꢀꢁꢎꢜꢅ1ꢐ,  
: ꢈꢉꢆꢇꢇꢅ8ꢈꢃꢑꢍ&  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅꢙꢍꢃꢌ4ꢄꢈ!!  
ꢐ&ꢆꢄ#ꢋ%%ꢅꢅ  
M
ꢀꢁꢎꢘ  
ꢕꢁꢀꢕ  
M
M
M
ꢀꢁꢜꢘ  
M
ꢕꢁꢎꢘ  
ꢗꢎ  
ꢗꢀ  
.
: ꢈꢉꢆꢇꢇꢅ>ꢃ#&ꢍ  
?ꢁꢕꢕꢅ1ꢐ,  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅ>ꢃ#&ꢍ  
: ꢈꢉꢆꢇꢇꢅ9ꢈꢄꢑ&ꢍ  
,ꢍꢆ'%ꢈꢉꢅ@ꢋꢓ&ꢃꢋꢄꢆꢇA  
3ꢋꢋ&ꢅ9ꢈꢄꢑ&ꢍ  
.ꢀ  
-ꢁꢛꢕꢅ1ꢐ,  
ꢖꢁꢛꢕꢅ1ꢐ,  
ꢕꢁꢎꢘ  
ꢕꢁꢖꢕ  
M
M
ꢕꢁꢘꢕ  
ꢀꢁꢎꢜ  
9
3ꢋꢋ&ꢓꢉꢃꢄ&  
3ꢋꢋ&ꢅꢗꢄꢑꢇꢈ  
9ꢈꢆ#ꢅꢙꢍꢃꢌ4ꢄꢈ!!  
9ꢈꢆ#ꢅ>ꢃ#&ꢍ  
ꢔꢋꢇ#ꢅꢒꢉꢆ%&ꢅꢗꢄꢑꢇꢈꢅ  
ꢔꢋꢇ#ꢅꢒꢉꢆ%&ꢅꢗꢄꢑꢇꢈꢅ1ꢋ&&ꢋ'  
9ꢀ  
ꢀꢁꢕꢖꢅꢝ.3  
ꢕꢟ  
ꢕꢁꢀꢜ  
ꢕꢁ-ꢀ  
ꢘꢟ  
M
M
M
M
M
<ꢟ  
)
ꢕꢁꢎꢘ  
ꢕꢁꢘꢀ  
ꢀꢘꢟ  
ꢘꢟ  
ꢀꢘꢟ  
ꢛꢗꢊꢃꢉꢜ  
ꢀꢁ ꢂꢃꢄꢅꢀꢅ ꢃ!"ꢆꢇꢅꢃꢄ#ꢈ$ꢅ%ꢈꢆ&"ꢉꢈꢅ'ꢆꢊꢅ ꢆꢉꢊ(ꢅ)"&ꢅ'"!&ꢅ)ꢈꢅꢇꢋꢌꢆ&ꢈ#ꢅ*ꢃ&ꢍꢃꢄꢅ&ꢍꢈꢅꢍꢆ&ꢌꢍꢈ#ꢅꢆꢉꢈꢆꢁ  
ꢎꢁ ꢏꢅꢐꢃꢑꢄꢃ%ꢃꢌꢆꢄ&ꢅ,ꢍꢆꢉꢆꢌ&ꢈꢉꢃ!&ꢃꢌꢁ  
-ꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄ!ꢅꢒꢅꢆꢄ#ꢅ.ꢀꢅ#ꢋꢅꢄꢋ&ꢅꢃꢄꢌꢇ"#ꢈꢅ'ꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢁꢅꢔꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢅ!ꢍꢆꢇꢇꢅꢄꢋ&ꢅꢈ$ꢌꢈꢈ#ꢅꢕꢁꢀꢘꢅ''ꢅꢓꢈꢉꢅ!ꢃ#ꢈꢁ  
ꢖꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢃꢄꢑꢅꢆꢄ#ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢃꢄꢑꢅꢓꢈꢉꢅꢗꢐꢔ.ꢅ0ꢀꢖꢁꢘꢔꢁ  
1ꢐ,2 1ꢆ!ꢃꢌꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄꢁꢅꢙꢍꢈꢋꢉꢈ&ꢃꢌꢆꢇꢇꢊꢅꢈ$ꢆꢌ&ꢅ ꢆꢇ"ꢈꢅ!ꢍꢋ*ꢄꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ!ꢁ  
ꢝ.32 ꢝꢈ%ꢈꢉꢈꢄꢌꢈꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄ(ꢅ"!"ꢆꢇꢇꢊꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ(ꢅ%ꢋꢉꢅꢃꢄ%ꢋꢉ'ꢆ&ꢃꢋꢄꢅꢓ"ꢉꢓꢋ!ꢈ!ꢅꢋꢄꢇꢊꢁ  
ꢔꢃꢌꢉꢋꢌꢍꢃꢓ ꢌꢍꢄꢋꢇꢋꢑꢊ ꢒꢉꢆ*ꢃꢄꢑ ,ꢕꢖꢞꢕꢘꢜ1  
DS21711J-page 16  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆ ꢕꢄꢈꢈꢆ!ꢎꢊꢈꢋꢐꢃꢆꢑ ꢛꢒꢆMꢆꢛꢄ""ꢗ#$ꢆꢓ%&ꢔꢆꢕꢕꢆꢖꢗꢅꢘꢆꢙ !ꢏ'ꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
© 2009 Microchip Technology Inc.  
DS21711J-page 17  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆ()ꢋꢐꢆ )"ꢋꢐ*ꢆ ꢕꢄꢈꢈꢆ!ꢎꢊꢈꢋꢐꢃꢆꢑ (ꢒꢆMꢆ+%+ꢆꢕꢕꢆꢖꢗꢅꢘꢆꢙ(  !ꢇꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
D
N
E
E1  
NOTE 1  
1
2
b
e
c
φ
A
A2  
A1  
L
L1  
6ꢄꢃ&!  
ꢔꢚ99ꢚꢔ.ꢙ.ꢝꢐ  
ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢅ9ꢃ'ꢃ&!  
ꢔꢚ7  
7:ꢔ  
ꢔꢗ;  
7"')ꢈꢉꢅꢋ%ꢅꢂꢃꢄ!  
ꢂꢃ&ꢌꢍ  
7
<
ꢕꢁ?ꢘꢅ1ꢐ,  
: ꢈꢉꢆꢇꢇꢅ8ꢈꢃꢑꢍ&  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅꢙꢍꢃꢌ4ꢄꢈ!!  
ꢐ&ꢆꢄ#ꢋ%%ꢅ  
M
ꢕꢁ<ꢕ  
ꢕꢁꢕꢘ  
M
ꢀꢁꢕꢕ  
M
ꢀꢁꢎꢕ  
ꢀꢁꢕꢘ  
ꢕꢁꢀꢘ  
ꢗꢎ  
ꢗꢀ  
.
: ꢈꢉꢆꢇꢇꢅ>ꢃ#&ꢍ  
?ꢁꢖꢕꢅ1ꢐ,  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅ>ꢃ#&ꢍ  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅ9ꢈꢄꢑ&ꢍ  
3ꢋꢋ&ꢅ9ꢈꢄꢑ&ꢍ  
.ꢀ  
9
ꢖꢁ-ꢕ  
ꢎꢁꢛꢕ  
ꢕꢁꢖꢘ  
ꢖꢁꢖꢕ  
-ꢁꢕꢕ  
ꢕꢁ?ꢕ  
ꢖꢁꢘꢕ  
-ꢁꢀꢕ  
ꢕꢁꢜꢘ  
3ꢋꢋ&ꢓꢉꢃꢄ&  
3ꢋꢋ&ꢅꢗꢄꢑꢇꢈ  
9ꢈꢆ#ꢅꢙꢍꢃꢌ4ꢄꢈ!!  
9ꢈꢆ#ꢅ>ꢃ#&ꢍ  
9ꢀ  
ꢀꢁꢕꢕꢅꢝ.3  
ꢕꢟ  
ꢕꢁꢕꢛ  
ꢕꢁꢀꢛ  
M
M
M
<ꢟ  
)
ꢕꢁꢎꢕ  
ꢕꢁ-ꢕ  
ꢛꢗꢊꢃꢉꢜ  
ꢀꢁ ꢂꢃꢄꢅꢀꢅ ꢃ!"ꢆꢇꢅꢃꢄ#ꢈ$ꢅ%ꢈꢆ&"ꢉꢈꢅ'ꢆꢊꢅ ꢆꢉꢊ(ꢅ)"&ꢅ'"!&ꢅ)ꢈꢅꢇꢋꢌꢆ&ꢈ#ꢅ*ꢃ&ꢍꢃꢄꢅ&ꢍꢈꢅꢍꢆ&ꢌꢍꢈ#ꢅꢆꢉꢈꢆꢁ  
ꢎꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄ!ꢅꢒꢅꢆꢄ#ꢅ.ꢀꢅ#ꢋꢅꢄꢋ&ꢅꢃꢄꢌꢇ"#ꢈꢅ'ꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢁꢅꢔꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢅ!ꢍꢆꢇꢇꢅꢄꢋ&ꢅꢈ$ꢌꢈꢈ#ꢅꢕꢁꢀꢘꢅ''ꢅꢓꢈꢉꢅ!ꢃ#ꢈꢁ  
-ꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢃꢄꢑꢅꢆꢄ#ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢃꢄꢑꢅꢓꢈꢉꢅꢗꢐꢔ.ꢅ0ꢀꢖꢁꢘꢔꢁ  
1ꢐ,2 1ꢆ!ꢃꢌꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄꢁꢅꢙꢍꢈꢋꢉꢈ&ꢃꢌꢆꢇꢇꢊꢅꢈ$ꢆꢌ&ꢅ ꢆꢇ"ꢈꢅ!ꢍꢋ*ꢄꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ!ꢁ  
ꢝ.32 ꢝꢈ%ꢈꢉꢈꢄꢌꢈꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄ(ꢅ"!"ꢆꢇꢇꢊꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ(ꢅ%ꢋꢉꢅꢃꢄ%ꢋꢉ'ꢆ&ꢃꢋꢄꢅꢓ"ꢉꢓꢋ!ꢈ!ꢅꢋꢄꢇꢊꢁ  
ꢔꢃꢌꢉꢋꢌꢍꢃꢓ ꢌꢍꢄꢋꢇꢋꢑꢊ ꢒꢉꢆ*ꢃꢄꢑ ,ꢕꢖꢞꢕ<?1  
DS21711J-page 18  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆ,ꢋꢌ"ꢗꢆ ꢕꢄꢈꢈꢆ!ꢎꢊꢈꢋꢐꢃꢆꢇꢄꢌ*ꢄ-ꢃꢆꢑ, ꢒꢆꢙ, !ꢇꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
D
N
E
E1  
NOTE 1  
2
b
1
e
c
φ
A2  
A
L
L1  
A1  
6ꢄꢃ&!  
ꢔꢚ99ꢚꢔ.ꢙ.ꢝꢐ  
ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢅ9ꢃ'ꢃ&!  
ꢔꢚ7  
7:ꢔ  
ꢔꢗ;  
7"')ꢈꢉꢅꢋ%ꢅꢂꢃꢄ!  
ꢂꢃ&ꢌꢍ  
7
<
ꢕꢁ?ꢘꢅ1ꢐ,  
: ꢈꢉꢆꢇꢇꢅ8ꢈꢃꢑꢍ&  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅꢙꢍꢃꢌ4ꢄꢈ!!  
ꢐ&ꢆꢄ#ꢋ%%ꢅ  
: ꢈꢉꢆꢇꢇꢅ>ꢃ#&ꢍ  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅ>ꢃ#&ꢍ  
: ꢈꢉꢆꢇꢇꢅ9ꢈꢄꢑ&ꢍ  
3ꢋꢋ&ꢅ9ꢈꢄꢑ&ꢍ  
M
ꢕꢁꢜꢘ  
ꢕꢁꢕꢕ  
M
ꢕꢁ<ꢘ  
ꢀꢁꢀꢕ  
ꢕꢁꢛꢘ  
ꢕꢁꢀꢘ  
ꢗꢎ  
ꢗꢀ  
.
.ꢀ  
M
ꢖꢁꢛꢕꢅ1ꢐ,  
-ꢁꢕꢕꢅ1ꢐ,  
-ꢁꢕꢕꢅ1ꢐ,  
ꢕꢁ?ꢕ  
9
ꢕꢁꢖꢕ  
ꢕꢁ<ꢕ  
3ꢋꢋ&ꢓꢉꢃꢄ&  
3ꢋꢋ&ꢅꢗꢄꢑꢇꢈ  
9ꢀ  
ꢕꢁꢛꢘꢅꢝ.3  
M
ꢕꢟ  
<ꢟ  
9ꢈꢆ#ꢅꢙꢍꢃꢌ4ꢄꢈ!!  
9ꢈꢆ#ꢅ>ꢃ#&ꢍ  
)
ꢕꢁꢕ<  
ꢕꢁꢎꢎ  
M
M
ꢕꢁꢎ-  
ꢕꢁꢖꢕ  
ꢛꢗꢊꢃꢉꢜ  
ꢀꢁ ꢂꢃꢄꢅꢀꢅ ꢃ!"ꢆꢇꢅꢃꢄ#ꢈ$ꢅ%ꢈꢆ&"ꢉꢈꢅ'ꢆꢊꢅ ꢆꢉꢊ(ꢅ)"&ꢅ'"!&ꢅ)ꢈꢅꢇꢋꢌꢆ&ꢈ#ꢅ*ꢃ&ꢍꢃꢄꢅ&ꢍꢈꢅꢍꢆ&ꢌꢍꢈ#ꢅꢆꢉꢈꢆꢁ  
ꢎꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄ!ꢅꢒꢅꢆꢄ#ꢅ.ꢀꢅ#ꢋꢅꢄꢋ&ꢅꢃꢄꢌꢇ"#ꢈꢅ'ꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢁꢅꢔꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢅ!ꢍꢆꢇꢇꢅꢄꢋ&ꢅꢈ$ꢌꢈꢈ#ꢅꢕꢁꢀꢘꢅ''ꢅꢓꢈꢉꢅ!ꢃ#ꢈꢁ  
-ꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢃꢄꢑꢅꢆꢄ#ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢃꢄꢑꢅꢓꢈꢉꢅꢗꢐꢔ.ꢅ0ꢀꢖꢁꢘꢔꢁ  
1ꢐ,2 1ꢆ!ꢃꢌꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄꢁꢅꢙꢍꢈꢋꢉꢈ&ꢃꢌꢆꢇꢇꢊꢅꢈ$ꢆꢌ&ꢅ ꢆꢇ"ꢈꢅ!ꢍꢋ*ꢄꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ!ꢁ  
ꢝ.32 ꢝꢈ%ꢈꢉꢈꢄꢌꢈꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄ(ꢅ"!"ꢆꢇꢇꢊꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ(ꢅ%ꢋꢉꢅꢃꢄ%ꢋꢉ'ꢆ&ꢃꢋꢄꢅꢓ"ꢉꢓꢋ!ꢈ!ꢅꢋꢄꢇꢊꢁ  
ꢔꢃꢌꢉꢋꢌꢍꢃꢓ ꢌꢍꢄꢋꢇꢋꢑꢊ ꢒꢉꢆ*ꢃꢄꢑ ,ꢕꢖꢞꢀꢀꢀ1  
© 2009 Microchip Technology Inc.  
DS21711J-page 19  
24AA01/24LC01B  
.ꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆ ꢕꢄꢈꢈꢆ!ꢎꢊꢈꢋꢐꢃꢆ("ꢄꢐꢉꢋꢉꢊꢗ"ꢆꢑ!(ꢒꢆꢙ !(ꢁ/ꢓꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
b
N
E
E1  
3
2
1
e
e1  
D
A2  
c
A
φ
A1  
L
L1  
6ꢄꢃ&!  
ꢔꢚ99ꢚꢔ.ꢙ.ꢝꢐ  
ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢅ9ꢃ'ꢃ&!  
ꢔꢚ7  
7:ꢔ  
ꢔꢗ;  
7"')ꢈꢉꢅꢋ%ꢅꢂꢃꢄ!  
9ꢈꢆ#ꢅꢂꢃ&ꢌꢍ  
7
ꢕꢁꢛꢘꢅ1ꢐ,  
:"&!ꢃ#ꢈꢅ9ꢈꢆ#ꢅꢂꢃ&ꢌꢍ  
: ꢈꢉꢆꢇꢇꢅ8ꢈꢃꢑꢍ&  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅꢙꢍꢃꢌ4ꢄꢈ!!  
ꢐ&ꢆꢄ#ꢋ%%  
: ꢈꢉꢆꢇꢇꢅ>ꢃ#&ꢍ  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅ>ꢃ#&ꢍ  
: ꢈꢉꢆꢇꢇꢅ9ꢈꢄꢑ&ꢍ  
3ꢋꢋ&ꢅ9ꢈꢄꢑ&ꢍ  
3ꢋꢋ&ꢓꢉꢃꢄ&  
3ꢋꢋ&ꢅꢗꢄꢑꢇꢈ  
9ꢈꢆ#ꢅꢙꢍꢃꢌ4ꢄꢈ!!  
9ꢈꢆ#ꢅ>ꢃ#&ꢍ  
ꢈꢀ  
ꢗꢎ  
ꢗꢀ  
.
.ꢀ  
9
ꢀꢁꢛꢕꢅ1ꢐ,  
ꢕꢁꢛꢕ  
ꢕꢁ<ꢛ  
ꢕꢁꢕꢕ  
ꢎꢁꢎꢕ  
ꢀꢁ-ꢕ  
ꢎꢁꢜꢕ  
ꢕꢁꢀꢕ  
ꢕꢁ-ꢘ  
ꢕꢟ  
M
M
M
M
M
M
M
M
M
M
M
ꢀꢁꢖꢘ  
ꢀꢁ-ꢕ  
ꢕꢁꢀꢘ  
-ꢁꢎꢕ  
ꢀꢁ<ꢕ  
-ꢁꢀꢕ  
ꢕꢁ?ꢕ  
ꢕꢁ<ꢕ  
-ꢕꢟ  
9ꢀ  
)
ꢕꢁꢕ<  
ꢕꢁꢎꢕ  
ꢕꢁꢎ?  
ꢕꢁꢘꢀ  
ꢛꢗꢊꢃꢉꢜ  
ꢀꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄ!ꢅꢒꢅꢆꢄ#ꢅ.ꢀꢅ#ꢋꢅꢄꢋ&ꢅꢃꢄꢌꢇ"#ꢈꢅ'ꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢁꢅꢔꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢅ!ꢍꢆꢇꢇꢅꢄꢋ&ꢅꢈ$ꢌꢈꢈ#ꢅꢕꢁꢀꢎꢜꢅ''ꢅꢓꢈꢉꢅ!ꢃ#ꢈꢁ  
ꢎꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢃꢄꢑꢅꢆꢄ#ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢃꢄꢑꢅꢓꢈꢉꢅꢗꢐꢔ.ꢅ0ꢀꢖꢁꢘꢔꢁ  
1ꢐ,2 1ꢆ!ꢃꢌꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄꢁꢅꢙꢍꢈꢋꢉꢈ&ꢃꢌꢆꢇꢇꢊꢅꢈ$ꢆꢌ&ꢅ ꢆꢇ"ꢈꢅ!ꢍꢋ*ꢄꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ!ꢁ  
ꢔꢃꢌꢉꢋꢌꢍꢃꢓ ꢌꢍꢄꢋꢇꢋꢑꢊ ꢒꢉꢆ*ꢃꢄꢑ ,ꢕꢖꢞꢕꢛꢀ1  
DS21711J-page 20  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
.ꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆ ꢕꢄꢈꢈꢆ!ꢎꢊꢈꢋꢐꢃꢆ("ꢄꢐꢉꢋꢉꢊꢗ"ꢆꢑꢂ(ꢒꢆꢙ '0ꢔꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
D
b
1
3
2
E1  
E
4
5
e
e
A
A2  
c
A1  
L
6ꢄꢃ&!  
ꢔꢚ99ꢚꢔ.ꢙ.ꢝꢐ  
ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢅ9ꢃ'ꢃ&!  
ꢔꢚ7  
7:ꢔ  
ꢔꢗ;  
7"')ꢈꢉꢅꢋ%ꢅꢂꢃꢄ!  
ꢂꢃ&ꢌꢍ  
7
ꢕꢁ?ꢘꢅ1ꢐ,  
: ꢈꢉꢆꢇꢇꢅ8ꢈꢃꢑꢍ&  
ꢔꢋꢇ#ꢈ#ꢅꢂꢆꢌ4ꢆꢑꢈꢅꢙꢍꢃꢌ4ꢄꢈ!!  
ꢐ&ꢆꢄ#ꢋ%%  
ꢕꢁ<ꢕ  
ꢕꢁ<ꢕ  
ꢕꢁꢕꢕ  
ꢀꢁ<ꢕ  
ꢀꢁꢀꢘ  
ꢀꢁ<ꢕ  
ꢕꢁꢀꢕ  
ꢕꢁꢕ<  
ꢕꢁꢀꢘ  
M
M
M
ꢎꢁꢀꢕ  
ꢀꢁꢎꢘ  
ꢎꢁꢕꢕ  
ꢕꢁꢎꢕ  
M
ꢀꢁꢀꢕ  
ꢀꢁꢕꢕ  
ꢕꢁꢀꢕ  
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3ꢋꢋ&ꢅ9ꢈꢄꢑ&ꢍ  
9ꢈꢆ#ꢅꢙꢍꢃꢌ4ꢄꢈ!!  
9ꢈꢆ#ꢅ>ꢃ#&ꢍ  
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ꢛꢗꢊꢃꢉꢜ  
ꢀꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄ!ꢅꢒꢅꢆꢄ#ꢅ.ꢀꢅ#ꢋꢅꢄꢋ&ꢅꢃꢄꢌꢇ"#ꢈꢅ'ꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢁꢅꢔꢋꢇ#ꢅ%ꢇꢆ!ꢍꢅꢋꢉꢅꢓꢉꢋ&ꢉ"!ꢃꢋꢄ!ꢅ!ꢍꢆꢇꢇꢅꢄꢋ&ꢅꢈ$ꢌꢈꢈ#ꢅꢕꢁꢀꢎꢜꢅ''ꢅꢓꢈꢉꢅ!ꢃ#ꢈꢁ  
ꢎꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢃꢄꢑꢅꢆꢄ#ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢃꢄꢑꢅꢓꢈꢉꢅꢗꢐꢔ.ꢅ0ꢀꢖꢁꢘꢔꢁ  
1ꢐ,2 1ꢆ!ꢃꢌꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄꢁꢅꢙꢍꢈꢋꢉꢈ&ꢃꢌꢆꢇꢇꢊꢅꢈ$ꢆꢌ&ꢅ ꢆꢇ"ꢈꢅ!ꢍꢋ*ꢄꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ!ꢁ  
ꢔꢃꢌꢉꢋꢌꢍꢃꢓ ꢌꢍꢄꢋꢇꢋꢑꢊ ꢒꢉꢆ*ꢃꢄꢑ ,ꢕꢖꢞꢕ?ꢀ1  
© 2009 Microchip Technology Inc.  
DS21711J-page 21  
24AA01/24LC01B  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
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DS21711J-page 22  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢍꢎꢄꢈꢆ1ꢈꢄꢊ$ꢆꢛꢗꢆꢂꢃꢄꢅꢆꢇꢄꢌ*ꢄ-ꢃꢆꢑ,'ꢒꢆMꢆ/2ꢓ2ꢔ%&ꢆꢕꢕꢆꢖꢗꢅꢘꢆꢙꢍ1ꢛꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
e
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A
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A1  
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ꢀꢁ ꢂꢃꢄꢅꢀꢅ ꢃ!"ꢆꢇꢅꢃꢄ#ꢈ$ꢅ%ꢈꢆ&"ꢉꢈꢅ'ꢆꢊꢅ ꢆꢉꢊ(ꢅ)"&ꢅ'"!&ꢅ)ꢈꢅꢇꢋꢌꢆ&ꢈ#ꢅ*ꢃ&ꢍꢃꢄꢅ&ꢍꢈꢅꢍꢆ&ꢌꢍꢈ#ꢅꢆꢉꢈꢆꢁ  
ꢎꢁ ꢂꢆꢌ4ꢆꢑꢈꢅ'ꢆꢊꢅꢍꢆ ꢈꢅꢋꢄꢈꢅꢋꢉꢅ'ꢋꢉꢈꢅꢈ$ꢓꢋ!ꢈ#ꢅ&ꢃꢈꢅ)ꢆꢉ!ꢅꢆ&ꢅꢈꢄ#!ꢁ  
-ꢁ ꢂꢆꢌ4ꢆꢑꢈꢅꢃ!ꢅ!ꢆ*ꢅ!ꢃꢄꢑ"ꢇꢆ&ꢈ#ꢁ  
ꢖꢁ ꢒꢃ'ꢈꢄ!ꢃꢋꢄꢃꢄꢑꢅꢆꢄ#ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢃꢄꢑꢅꢓꢈꢉꢅꢗꢐꢔ.ꢅ0ꢀꢖꢁꢘꢔꢁ  
1ꢐ,2 1ꢆ!ꢃꢌꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄꢁꢅꢙꢍꢈꢋꢉꢈ&ꢃꢌꢆꢇꢇꢊꢅꢈ$ꢆꢌ&ꢅ ꢆꢇ"ꢈꢅ!ꢍꢋ*ꢄꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ!ꢁ  
ꢝ.32 ꢝꢈ%ꢈꢉꢈꢄꢌꢈꢅꢒꢃ'ꢈꢄ!ꢃꢋꢄ(ꢅ"!"ꢆꢇꢇꢊꢅ*ꢃ&ꢍꢋ"&ꢅ&ꢋꢇꢈꢉꢆꢄꢌꢈ(ꢅ%ꢋꢉꢅꢃꢄ%ꢋꢉ'ꢆ&ꢃꢋꢄꢅꢓ"ꢉꢓꢋ!ꢈ!ꢅꢋꢄꢇꢊꢁ  
ꢔꢃꢌꢉꢋꢌꢍꢃꢓ ꢌꢍꢄꢋꢇꢋꢑꢊ ꢒꢉꢆ*ꢃꢄꢑ ,ꢕꢖꢞꢀꢎ-,  
© 2009 Microchip Technology Inc.  
DS21711J-page 23  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢍꢎꢄꢈꢆ1ꢈꢄꢊ$ꢆꢛꢗꢆꢂꢃꢄꢅꢆꢇꢄꢌ*ꢄ-ꢃꢆꢑ,'ꢒꢆMꢆ/2ꢓ2ꢔ%&ꢆꢕꢕꢆꢖꢗꢅꢘꢆꢙꢍ1ꢛꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
DS21711J-page 24  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢍꢎꢄꢈꢆ1ꢈꢄꢊ$ꢆꢛꢗꢆꢂꢃꢄꢅꢆꢇꢄꢌ*ꢄ-ꢃꢆꢑ,ꢛꢒꢆMꢆ/2ꢓ2ꢔ%0.ꢆꢕꢕꢆꢖꢗꢅꢘꢆꢙ(ꢍ1ꢛꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
© 2009 Microchip Technology Inc.  
DS21711J-page 25  
24AA01/24LC01B  
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢄꢉꢊꢋꢌꢆꢍꢎꢄꢈꢆ1ꢈꢄꢊ$ꢆꢛꢗꢆꢂꢃꢄꢅꢆꢇꢄꢌ*ꢄ-ꢃꢆꢑ,ꢛꢒꢆMꢆ/2ꢓ2ꢔ%0.ꢆꢕꢕꢆꢖꢗꢅꢘꢆꢙ(ꢍ1ꢛꢚ  
ꢛꢗꢊꢃꢜ 3ꢋꢉꢅ&ꢍꢈꢅ'ꢋ!&ꢅꢌ"ꢉꢉꢈꢄ&ꢅꢓꢆꢌ4ꢆꢑꢈꢅ#ꢉꢆ*ꢃꢄꢑ!(ꢅꢓꢇꢈꢆ!ꢈꢅ!ꢈꢈꢅ&ꢍꢈꢅꢔꢃꢌꢉꢋꢌꢍꢃꢓꢅꢂꢆꢌ4ꢆꢑꢃꢄꢑꢅꢐꢓꢈꢌꢃ%ꢃꢌꢆ&ꢃꢋꢄꢅꢇꢋꢌꢆ&ꢈ#ꢅꢆ&ꢅ  
ꢍ&&ꢓ255***ꢁ'ꢃꢌꢉꢋꢌꢍꢃꢓꢁꢌꢋ'5ꢓꢆꢌ4ꢆꢑꢃꢄꢑ  
DS21711J-page 26  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
APPENDIX A: REVISION HISTORY  
Revision C  
Corrections to Section 1.0, Electrical Characteristics.  
Section 9.1, 24LC01B standard marking code.  
Revision D  
Added DFN package.  
Revision E  
Revised Figure 3-2 Control Byte Allocation; Figure 4-1  
Byte Write; Figure 4-2 Page Write; Section 6.0 Write  
Protection; Figure 7-1 Current Address Read; Figure 7-  
2 Random Read; Figure 7-3 Sequential Read.  
Revision F (01/2007)  
Revised Device Selection Table; Revised Features  
Section; Changed 1.8V to 1.7V; Revised Table 1-1,  
1-2, 8-1; Replaced Package Drawings; Revised  
Product ID System.  
Revision G (03/2007)  
Replaced Package Drawings (Rev. AM).  
Revision H (08/2008)  
Added SC-70 Package; Updated Package Drawings.  
Revision J (01/2009)  
Added TDFN Package; Updated Package Drawings.  
© 2009 Microchip Technology Inc.  
DS21711J-page 27  
24AA01/24LC01B  
NOTES:  
DS21711J-page 28  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
THE MICROCHIP WEB SITE  
CUSTOMER SUPPORT  
Microchip provides online support via our WWW site at  
www.microchip.com. This web site is used as a means  
to make files and information easily available to  
customers. Accessible by using your favorite Internet  
browser, the web site contains the following  
information:  
Users of Microchip products can receive assistance  
through several channels:  
• Distributor or Representative  
• Local Sales Office  
• Field Application Engineer (FAE)  
Technical Support  
Product Support – Data sheets and errata,  
application notes and sample programs, design  
resources, user’s guides and hardware support  
documents, latest software releases and archived  
software  
• Development Systems Information Line  
Customers  
should  
contact  
their  
distributor,  
representative or field application engineer (FAE) for  
support. Local sales offices are also available to help  
customers. A listing of sales offices and locations is  
included in the back of this document.  
General Technical Support – Frequently Asked  
Questions (FAQ), technical support requests,  
online discussion groups, Microchip consultant  
program member listing  
Technical support is available through the web site  
at: http://support.microchip.com  
Business of Microchip – Product selector and  
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Microchip sales offices, distributors and factory  
representatives  
CUSTOMER CHANGE NOTIFICATION  
SERVICE  
Microchip’s customer notification service helps keep  
customers current on Microchip products. Subscribers  
will receive e-mail notification whenever there are  
changes, updates, revisions or errata related to a  
specified product family or development tool of interest.  
To register, access the Microchip web site at  
www.microchip.com, click on Customer Change  
Notification and follow the registration instructions.  
© 2009 Microchip Technology Inc.  
DS21711J-page 29  
24AA01/24LC01B  
READER RESPONSE  
It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip prod-  
uct. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation  
can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150.  
Please list the following information, and use this outline to provide us with your comments about this document.  
To:  
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Company  
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Telephone: (_______) _________ - _________  
FAX: (______) _________ - _________  
Application (optional):  
Would you like a reply?  
Y
N
24AA01/24LC01B  
DS21711J  
Literature Number:  
Device:  
Questions:  
1. What are the best features of this document?  
2. How does this document meet your hardware and software development needs?  
3. Do you find the organization of this document easy to follow? If not, why?  
4. What additions to the document do you think would enhance the structure and subject?  
5. What deletions from the document could be made without affecting the overall usefulness?  
6. Is there any incorrect or misleading information (what and where)?  
7. How would you improve this document?  
DS21711J-page 30  
© 2009 Microchip Technology Inc.  
24AA01/24LC01B  
PRODUCT IDENTIFICATION SYSTEM  
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.  
X
/XX  
PART NO.  
Device  
Examples:  
a) 24AA01-I/P: Industrial Temperature,1.7V  
PDIP package  
Temperature Package  
Range  
b) 24AA01-I/SN: Industrial Temperature,  
1.7V, SOIC package  
2
Device:  
24AA01:  
24AA01T:  
=
=
1.7V, 1 Kbit I C™ Serial EEPROM  
2
c)  
24AA01T-I/OT: Industrial Temperature,  
1.7V, SOT-23 package, tape and reel  
1.7V, 1 Kbit I C Serial EEPROM  
(Tape and Reel)  
2
24LC01B:  
=
2.5V, 1 Kbit I C Serial EEPROM  
d) 24LC01B-I/P: Industrial Temperature,  
2.5V, PDIP package  
2
24LC01BT: = 2.5V, 1 Kbit I C Serial EEPROM  
(Tape and Reel)  
e) 24LC01B-E/SN: Extended Temperature,  
2.5V, SOIC package  
f)  
24LC01BT-I/LT: Industrial Temperature,  
1.7V, SC-70 package, tape and reel  
Temperature  
Range:  
I
E
= -40°C to +85°C  
= -40°C to +125°C  
Package:  
MC = 2x3 DFN, 8-lead  
= Plastic DIP (300 mil body), 8-lead  
P
SN = Plastic SOIC (3.90 mm body), 8-lead  
ST = Plastic TSSOP (4.4 mm), 8-lead  
MS = Plastic Micro Small Outline (MSOP), 8-lead  
OT = SOT-23, 5-lead (Tape and Reel only)  
LT = SC-70, 5-lead (Tape and Reel only)  
(1)  
MNY =TDFN, (2x3x0.75 mm body), 8-lead  
Note 1: "Y" indicates a Nickel Palladium Gold (NiPdAu) finish.  
2009 Microchip Technology Inc.  
DS21711J-page31  
24AA01/24LC01B  
NOTES:  
DS21711J-page 32  
2009 Microchip Technology Inc.  
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 provided only for your convenience  
and may be superseded by updates. It is your responsibility to  
ensure that your application meets with your specifications.  
MICROCHIP MAKES NO REPRESENTATIONS OR  
WARRANTIES OF ANY KIND WHETHER EXPRESS OR  
IMPLIED, WRITTEN OR ORAL, STATUTORY OR  
OTHERWISE, RELATED TO THE INFORMATION,  
INCLUDING BUT NOT LIMITED TO ITS CONDITION,  
QUALITY, PERFORMANCE, MERCHANTABILITY OR  
FITNESS FOR PURPOSE. Microchip disclaims all liability  
arising from this information and its use. Use of Microchip  
devices in life support and/or safety applications is entirely at  
the buyer’s risk, and the buyer agrees to defend, indemnify and  
hold harmless Microchip from any and all damages, claims,  
suits, or expenses resulting from such use. No licenses are  
conveyed, implicitly or otherwise, under any Microchip  
intellectual property rights.  
Trademarks  
The Microchip name and logo, the Microchip logo, Accuron,  
dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,  
PICSTART, rfPIC, SmartShunt and UNI/O are registered  
trademarks of Microchip Technology Incorporated in the  
U.S.A. and other countries.  
FilterLab, Linear Active Thermistor, MXDEV, MXLAB,  
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, CodeGuard,  
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,  
ECONOMONITOR, FanSense, In-Circuit Serial  
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB  
Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM,  
32  
PICDEM.net, PICtail, PIC logo, PowerCal, PowerInfo,  
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total  
Endurance, WiperLock and ZENA 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.  
© 2009, Microchip Technology Incorporated, Printed in the  
U.S.A., All Rights Reserved.  
Printed on recycled paper.  
Microchip received ISO/TS-16949:2002 certification for its worldwide  
headquarters, design and wafer fabrication facilities in Chandler and  
Tempe, Arizona; Gresham, Oregon and design centers in California  
and India. The Company’s quality system processes and procedures  
are for its PIC® MCUs and dsPIC® DSCs, 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.  
© 2009 Microchip Technology Inc.  
DS21711J-page 33  
WORLDWIDE SALES AND SERVICE  
AMERICAS  
ASIA/PACIFIC  
ASIA/PACIFIC  
EUROPE  
Corporate Office  
Asia Pacific Office  
Suites 3707-14, 37th Floor  
Tower 6, The Gateway  
Harbour City, Kowloon  
Hong Kong  
Tel: 852-2401-1200  
Fax: 852-2401-3431  
India - Bangalore  
Tel: 91-80-3090-4444  
Fax: 91-80-3090-4080  
Austria - Wels  
Tel: 43-7242-2244-39  
Fax: 43-7242-2244-393  
2355 West Chandler Blvd.  
Chandler, AZ 85224-6199  
Tel: 480-792-7200  
Fax: 480-792-7277  
Technical Support:  
http://support.microchip.com  
Web Address:  
www.microchip.com  
Denmark - Copenhagen  
Tel: 45-4450-2828  
Fax: 45-4485-2829  
India - New Delhi  
Tel: 91-11-4160-8631  
Fax: 91-11-4160-8632  
France - Paris  
Tel: 33-1-69-53-63-20  
Fax: 33-1-69-30-90-79  
India - Pune  
Tel: 91-20-2566-1512  
Fax: 91-20-2566-1513  
Australia - Sydney  
Tel: 61-2-9868-6733  
Fax: 61-2-9868-6755  
Atlanta  
Duluth, GA  
Tel: 678-957-9614  
Fax: 678-957-1455  
Germany - Munich  
Tel: 49-89-627-144-0  
Fax: 49-89-627-144-44  
Japan - Yokohama  
Tel: 81-45-471- 6166  
Fax: 81-45-471-6122  
China - Beijing  
Tel: 86-10-8528-2100  
Fax: 86-10-8528-2104  
Italy - Milan  
Tel: 39-0331-742611  
Fax: 39-0331-466781  
Korea - Daegu  
Tel: 82-53-744-4301  
Fax: 82-53-744-4302  
Boston  
China - Chengdu  
Tel: 86-28-8665-5511  
Fax: 86-28-8665-7889  
Westborough, MA  
Tel: 774-760-0087  
Fax: 774-760-0088  
Netherlands - Drunen  
Tel: 31-416-690399  
Fax: 31-416-690340  
Korea - Seoul  
China - Hong Kong SAR  
Tel: 852-2401-1200  
Fax: 852-2401-3431  
Tel: 82-2-554-7200  
Fax: 82-2-558-5932 or  
82-2-558-5934  
Chicago  
Itasca, IL  
Tel: 630-285-0071  
Fax: 630-285-0075  
Spain - Madrid  
Tel: 34-91-708-08-90  
Fax: 34-91-708-08-91  
China - Nanjing  
Tel: 86-25-8473-2460  
Fax: 86-25-8473-2470  
Malaysia - Kuala Lumpur  
Tel: 60-3-6201-9857  
Fax: 60-3-6201-9859  
Cleveland  
UK - Wokingham  
Tel: 44-118-921-5869  
Fax: 44-118-921-5820  
Independence, OH  
Tel: 216-447-0464  
Fax: 216-447-0643  
China - Qingdao  
Tel: 86-532-8502-7355  
Fax: 86-532-8502-7205  
Malaysia - Penang  
Tel: 60-4-227-8870  
Fax: 60-4-227-4068  
Dallas  
Addison, TX  
Tel: 972-818-7423  
Fax: 972-818-2924  
China - Shanghai  
Tel: 86-21-5407-5533  
Fax: 86-21-5407-5066  
Philippines - Manila  
Tel: 63-2-634-9065  
Fax: 63-2-634-9069  
Detroit  
China - Shenyang  
Tel: 86-24-2334-2829  
Fax: 86-24-2334-2393  
Singapore  
Tel: 65-6334-8870  
Fax: 65-6334-8850  
Farmington Hills, MI  
Tel: 248-538-2250  
Fax: 248-538-2260  
China - Shenzhen  
Tel: 86-755-8203-2660  
Fax: 86-755-8203-1760  
Taiwan - Hsin Chu  
Tel: 886-3-572-9526  
Fax: 886-3-572-6459  
Kokomo  
Kokomo, IN  
Tel: 765-864-8360  
Fax: 765-864-8387  
China - Wuhan  
Tel: 86-27-5980-5300  
Fax: 86-27-5980-5118  
Taiwan - Kaohsiung  
Tel: 886-7-536-4818  
Fax: 886-7-536-4803  
Los Angeles  
Mission Viejo, CA  
Tel: 949-462-9523  
Fax: 949-462-9608  
China - Xiamen  
Tel: 86-592-2388138  
Fax: 86-592-2388130  
Taiwan - Taipei  
Tel: 886-2-2500-6610  
Fax: 886-2-2508-0102  
Santa Clara  
China - Xian  
Tel: 86-29-8833-7252  
Fax: 86-29-8833-7256  
Thailand - Bangkok  
Tel: 66-2-694-1351  
Fax: 66-2-694-1350  
Santa Clara, CA  
Tel: 408-961-6444  
Fax: 408-961-6445  
China - Zhuhai  
Tel: 86-756-3210040  
Fax: 86-756-3210049  
Toronto  
Mississauga, Ontario,  
Canada  
Tel: 905-673-0699  
Fax: 905-673-6509  
02/04/09  
DS21711J-page 34  
© 2009 Microchip Technology Inc.  

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