ETC 24LC024TIST

24LC024/24LC025
2K 2.2V I2C™ Serial EEPROM
FEATURES
PDIP/SOIC
A0
1
A1
2
A2
3
Vss
4
24LC024
24LC025
8
Vcc
7
WP*
6
SCL
5
SDA
TSSOP
A0
A1
1
A2
VSS
3
4
2
24LC024
25LC025
• Single supply with operation from 2.2 to 5.5V
• Low power CMOS technology
- 1 mA active current typical
- 10 µA standby current typical at 5.5V
• Organized as a single block of 128 bytes (256 x 8)
• Hardware write protection for entire array
(24LC024)
• 2-wire serial interface bus, I2C compatible
• 100kHz and 400kHz compatibility
• Page-write buffer for up to 16 bytes
• Self-timed write cycle (including auto-erase)
• 3.5 ms typical write cycle time for page write
• Address lines allow up to eight devices on bus
• 1,000,000 erase/write cycles guaranteed
• ESD protection > 4,000V
• Data retention > 200 years
• 8-pin PDIP, SOIC or TSSOP packages
• Available for extended temperature ranges
- Commercial (C):
0°C to +70°C
- Industrial (I):
-40°C to +85°C
PACKAGE TYPES
8
7
VCC
WP*
6
5
SCL
SDA
DESCRIPTION
The Microchip Technology Inc. 24LC024/24LC025 is a
2K bit Serial Electrically Erasable PROM with a voltage
range of 2.2V to 5.5V. The device is organized as a
single block of 256 x 8-bit memory with a 2-wire serial
interface. Low current design permits operation with
typical standby and active currents of only 10 µA and 1
mA respectively. The device has a page-write capability
for up to 16 bytes of data. Functional address lines
allow the connection of up to eight 24LC024/24LC025
devices on the same bus for up to 16K bits of contiguous EEPROM memory. The device is available in the
standard 8-pin PDIP, 8-pin SOIC (150 mil), and TSSOP
packages.
*WP pin available only on 24LC024. This
pin has no internal connection on 24LC025
BLOCK DIAGRAM
A0 A1 A2
I/O
Control
Logic
WP*
HV Generator
Memory
Control
Logic
XDEC
EEPROM
Array
SDA SCL
VCC
VSS
Write Protect
Circuitry
YDEC
SENSE AMP
R/W CONTROL
*WP pin available only on 24LC024. This
pin has no internal connection on 24LC025
 1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer
DS21210D-page 1
24LC024/24LC025
1.0
1.1
ELECTRICAL
CHARACTERISTICS
TABLE 1-1:
Name
Maximum Ratings*
VCC ........................................................................7.0V
All inputs and outputs w.r.t. VSS .....-0.6V to VCC +1.0V
Storage temperature ..........................-65°C to +150°C
Ambient temp. with power applied......-65°C to +125°C
Soldering temperature of leads (10 seconds) .. +300°C
ESD protection on all pins ..................................... ≥ 4 kV
TABLE 1-2:
Function
VSS
Ground
SDA
Serial Data
SCL
Serial Clock
VCC
+2.2V to 5.5V Power Supply
A0, A1, A2
*Notice: Stresses above those listed under “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.
PIN FUNCTION TABLE
Chip Selects
WP
Hardware Write Protect (24LC024)
NC
No internal connection
DC CHARACTERISTICS
All parameters apply across the specified operating ranges unless otherwise
noted.
Parameter
VCC = +2.2V to +5.5V
Commercial (C):
Industrial (I):
Symbol
Min.
SCL and SDA pins:
High level input voltage
VIH
0.7 VCC
Low level input voltage
VIL
Hysteresis of Schmitt trigger inputs
Low level output voltage
VHYS
0.05 VCC
VOL
Tamb = 0°C to +70°C
Tamb = -40°C to +85°C
Max.
Units
Conditions
V
0.3 VCC
V
—
V
(Note)
0.40
V
IOL = 3.0 mA, VCC = 4.5V
IOL = 2.1 mA, VCC = 2.5V
Input leakage current
ILI
-10
10
µA
VIN = 0.1V to 5.5V, WP = Vss
Output leakage current
ILO
-10
10
µA
VOUT = 0.1V to 5.5V
CIN, COUT
—
10
pF
VCC = 5.0V (Note)
Tamb = 25°C, f = 1 MHz
ICC Read
—
1
mA
VCC = 5.5V, SCL = 400 kHz
ICC Write
—
3
mA
VCC = 5.5V
ICCS
—
50
µA
VCC = 5.5V, SDA = SCL = VCC
WP = VSS, A0, A1, A2 = VSS
Pin capacitance (all inputs/outputs)
Operating current
Standby current
Note: This parameter is periodically sampled and not 100% tested.
DS21210D-page 2
This Material Copyrighted by Its Respective Manufacturer
 1999 Microchip Technology Inc.
24LC024/24LC025
TABLE 1-3:
AC CHARACTERISTICS
All parameters apply across the specified operat- Vcc = 2.2V to 5.5V
ing ranges unless otherwise noted.
Commercial (C):
Industrial (I):
Tamb = 0°C to +70°C
Tamb = -40°C to +85°C
Vcc = 2.2V - 5.5V Vcc = 4.5V - 5.5V
STD MODE
FAST MODE
Symbol
Units
Parameter
Remarks
Min.
Max.
Min.
Max.
Clock frequency
Clock high time
Clock low time
SDA and SCL rise time
SDA and SCL fall time
START condition hold time
FCLK
THIGH
TLOW
TR
TF
THD:STA
—
4000
4700
—
—
4000
100
—
—
1000
300
—
—
600
1300
—
—
600
400
—
—
300
300
—
kHz
ns
ns
ns
ns
ns
START condition setup time
TSU:STA
4700
—
600
—
ns
Data input hold time
Data input setup time
STOP condition setup time
Output valid from clock
Bus free time
THD:DAT
TSU:DAT
TSU:STO
TAA
TBUF
0
250
4000
—
4700
—
—
—
3500
—
0
100
600
—
1300
—
—
—
900
—
ns
ns
ns
ns
ns
TOF
—
250
250
ns
TSP
—
50
20 +0.1
CB
—
(Note 2)
Time the bus must be free
before a new transmission
can start
(Note 1), CB ≤ 100 pF
50
ns
(Note 3)
TWC
—
1M
10
—
—
1M
10
—
Output fall time from VIH
minimum to VIL maximum
Input filter spike suppression
(SDA and SCL pins)
Write cycle time
Endurance
(Note 1)
(Note 1)
After this period the first
clock pulse is generated
Only relevant for repeated
START condition
(Note 2)
ms Byte or Page mode
cycles 25°C, VCC = 5.0V, Block
Mode (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 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 guaranteed by characterization. For endurance estimates in a specific
application, please consult the Total Endurance Model which can be obtained on our website.
FIGURE 1-1:
BUS TIMING DATA
THIGH
TF
SCL
TR
TSU:STA
TLOW
SDA
IN
THD:DAT
TSU:DAT
TSU:STO
THD:STA
TSP
TAA
TBUF
SDA
OUT
 1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer
DS21210D-page 3
24LC024/24LC025
2.0
PIN DESCRIPTIONS
3.0
2.1
SDA Serial Data
The 24LC024/24LC025 supports a bi-directional 2-wire
bus and data transmission protocol. A device that
sends data onto the bus is defined as transmitter, and
a device receiving data as 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
24LC024/24LC025 works as slave. Both master and
slave can operate as transmitter or receiver but the
master device determines which mode is activated.
This is a bi-directional pin used to transfer addresses
and data into and data out of the device. It is an open
drain terminal, therefore the SDA bus requires a pull-up
resistor to VCC (typical 10 kΩ for 100 kHz, 2 kΩ for
400 kHz).
For normal data transfer SDA is allowed to change only
during SCL low. Changes during SCL high are
reserved for indicating the START and STOP conditions.
2.2
FUNCTIONAL DESCRIPTION
SCL Serial Clock
This input is used to synchronize the data transfer from
and to the device.
2.3
A0, A1, A2
The levels on these inputs are compared with the corresponding bits in the slave address. The chip is
selected if the compare is true.
Up to eight 24LC024/24LC025 devices may be connected to the same bus by using different chip select bit
combinations. These inputs must be connected to
either VCC or VSS.
2.4
WP (24LC024 only)
This is the hardware write protect pin. It must be tied to
VCC or VSS. If tied to Vcc, the hardware write protection
is enabled. If the WP pin is tied to Vss the hardware
write protection is disabled. Note that the WP pin is
available only on the 24LC024. This pin is not internally
connected on the 24LC025.
2.5
Noise Protection
The 24LC024/24LC025 employs a VCC threshold
detector circuit which disables the internal erase/write
logic if the VCC is below 1.5 volts 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.
DS21210D-page 4
This Material Copyrighted by Its Respective Manufacturer
 1999 Microchip Technology Inc.
24LC024/24LC025
4.0
BUS CHARACTERISTICS
The data on the line must be changed during the LOW
period of the clock signal. There is one bit of data per
clock pulse.
The following bus protocol has been defined:
• Data transfer may be initiated only when the bus
is not busy.
• 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.
Accordingly, the following bus conditions have been
defined (Figure 4-1).
Each data transfer is initiated with a START condition
and terminated with a STOP condition. The number of
the 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 fashion.
4.1
4.5
Bus not Busy (A)
Both data and clock lines remain HIGH.
4.2
Each receiving device, when addressed, is required 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.
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
Note:
Stop Data Transfer (C)
Data Valid (D)
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.
FIGURE 4-1:
SCL
(A)
The 24LC024/24LC025 does not generate
any acknowledge bits if an internal programming cycle is in progress.
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. 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 must leave the data line HIGH to enable the
master to generate the STOP condition (Figure 4-2).
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.
4.4
Acknowledge
DATA TRANSFER SEQUENCE ON THE SERIAL BUS CHARACTERISTICS
(B)
(C)
(D)
START
CONDITION
ADDRESS OR
ACKNOWLEDGE
VALID
(C)
(A)
SDA
FIGURE 4-2:
STOP
CONDITION
DATA
ALLOWED
TO CHANGE
ACKNOWLEDGE TIMING
Acknowledge
Bit
SCL
1
2
SDA
3
4
5
6
7
Data from transmitter
Transmitter must release the SDA line at this point
allowing the Receiver to pull the SDA line low to
acknowledge the previous eight bits of data.
 1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer
8
9
1
2
3
Data from transmitter
Receiver must release the SDA line at this point
so the Transmitter can continue sending data.
DS21210D-page 5
24LC024/24LC025
5.0
DEVICE ADDRESSING
A control byte is the first byte received following the
start condition from the master device (Figure 5-1). The
control byte consists of a four bit control code; for the
24LC024/24LC025 this is set as 1010 binary for read
and write operations. The next three bits of the control
byte are the chip select bits (A2, A1, A0). The chip
select bits allow the use of up to eight 24LC024/
24LC025 devices on the same bus and are used to
select which device is accessed. The chip select bits in
the control byte must correspond to the logic levels on
the corresponding A2, A1, and A0 pins for the device to
respond. These bits are in effect the three most significant bits of the word address.
The last bit of the control byte defines the operation to
be performed. When set to a one a read operation is
selected, and when set to a zero a write operation is
selected. Following the start condition, the 24LC024/
24LC025 monitors the SDA bus checking the control
byte being transmitted. Upon receiving a 1010 code
and appropriate chip select bits, the slave device outputs an acknowledge signal on the SDA line. Depending on the state of the R/W bit, the 24LC024/24LC025
will select a read or write operation.
DS21210D-page 6
This Material Copyrighted by Its Respective Manufacturer
FIGURE 5-1:
CONTROL BYTE FORMAT
Read/Write Bit
Chip Select
Bits
Control Code
S
1
0
1
0
A2
A1 A0 R/W ACK
Slave Address
Start Bit
5.1
Acknowledge Bit
Contiguous Addressing Across
Multiple Devices
The chip select bits A2, A1, A0 can be used to expand
the contiguous address space for up to 16K bits by adding up to eight 24LC024/24LC025 devices on the same
bus. In this case, software can use A0 of the control
byte as address bit A8, A1 as address bit A9, and A2
as address bit A10. It is not possible to sequentially
read across device boundaries.
 1999 Microchip Technology Inc.
24LC024/24LC025
6.0
WRITE OPERATIONS
6.1
Byte Write
address remains constant. If the master should transmit
more than 16 bytes 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). If an attempt is
made to write to the protected portion of the array when
the hardware write protection has been enabled, the
device will acknowledge the command but no data will
be written. The write cycle time must be observed even
if the write protection is enabled.
Following the start signal from the master, the device
code(4 bits), the chip select bits (3 bits), and the R/W
bit which is a logic low is placed onto the bus by the
master transmitter. The device will acknowledge this
control byte during the ninth clock pulse. The next byte
transmitted by the master is the word address and will
be written into the address pointer of the 24LC024/
24LC025. After receiving another acknowledge signal
from the 24LC024/24LC025 the master device will
transmit the data word to be written into the addressed
memory location. The 24LC024/24LC025 acknowledges again and the master generates a stop condition. This initiates the internal write cycle, and during
this time the 24LC024/24LC025 will not generate
acknowledge signals (Figure 6-1). If an attempt is
made to write to the protected portion of the array when
the hardware write protection (24LC024 only) has been
enabled, the device will acknowledge the command but
no data will be written. The write cycle time must be
observed even if the write protection is enabled.
6.2
Note:
Page Write
The write control byte, word address and the first data
byte are transmitted to the 24LC024/24LC025 in the
same way as in a byte write. But instead of generating a
stop condition, the master transmits up to 15 additional
data bytes to the 24LC024/24LC025 which are temporarily stored in the on-chip page buffer and will be written into the memory after the master has transmitted a
stop condition. After the receipt of each word, the four
lower order address pointer bits are internally incremented by one. The higher order four bits of the word
FIGURE 6-1:
BUS ACTIVITY
MASTER
SDA LINE
S
SDA LINE
The WP pin (available on 24LC024 only) must be tied
to VCC or VSS. If tied to VCC, the entire array will be
write protected. If the WP pin is tied to VSS, then write
operations to all address locations are allowed.
CONTROL
BYTE
WORD
ADDRESS
S
T
O
P
DATA
P
A
C
K
BUS ACTIVITY
BUS ACTIVITY
MASTER
WRITE PROTECTION
BYTE WRITE
S
T
A
R
T
FIGURE 6-2:
6.3
Page write operations are limited to writing
bytes within a single physical page, 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.
A
C
K
A
C
K
PAGE WRITE
S
T
A
R
T
WORD
ADDRESS (n)
CONTROL
BYTE
DATA n +1
DATA n
S
T
O
P
DATA n + 15
S
BUS ACTIVITY
 1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer
P
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
DS21210D-page 7
24LC024/24LC025
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
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, then no ACK will be returned. If no ACK
is returned, then the start bit and control byte must be
re-sent. If the cycle is complete, then the device will
return the ACK and the master can then proceed with
the next read or write command. See Figure 7-1 for
flow diagram.
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
DS21210D-page 8
This Material Copyrighted by Its Respective Manufacturer
 1999 Microchip Technology Inc.
24LC024/24LC025
8.0
READ OPERATIONS
condition following the acknowledge. This terminates
the write operation, but not before the internal address
pointer is set. Then the master issues the control byte
again but with the R/W bit set to a one. The 24LC024/
24LC025 will then issue an acknowledge and transmits
the eight bit data word. The master will not acknowledge the transfer but does generate a stop condition
and the 24LC024/24LC025 discontinues transmission
(Figure 8-2). After this command, the internal address
counter will point to the address location following the
one that was just read.
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 one. There are three basic types
of read operations: current address read, random read,
and sequential read.
8.1
Current Address Read
The 24LC024/24LC025 contains an address counter
that maintains the address of the last word accessed,
internally incremented by one. Therefore, if the previous read access was to address n, the next current
address read operation would access data from
address n + 1. Upon receipt of the slave address with
the R/W bit set to one, the 24LC024/24LC025 issues
an acknowledge and transmits the eight bit data word.
The master will not acknowledge the transfer but does
generate a stop condition and the 24LC024/24LC025
discontinues transmission (Figure 8-1).
8.2
8.3
Sequential reads are initiated in the same way as a random read except that after the 24LC024/24LC025
transmits the first data byte, the master issues an
acknowledge as opposed to a stop condition in a random read. This directs the 24LC024/24LC025 to transmit the next sequentially addressed 8-bit word
(Figure 8-3).
Random Read
To provide sequential reads the 24LC024/24LC025
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 internal address pointer will automatically roll over from
address 0FFh to address 000h.
Random read operations allow the master to access
any memory location in a random manner. To perform
this type of read operation, first the word address must
be set. This is done by sending the word address to the
24LC024/24LC025 as part of a write operation. After
the word address is sent, the master generates a start
FIGURE 8-1:
CURRENT ADDRESS READ
S
T
BUS ACTIVITY A
MASTER
R
T
SDA LINE
S
CONTROL
BYTE
P
N
O
A
C
K
RANDOM READ
S
T
BUS ACTIVITY A
MASTER
R
T
CONTROL
BYTE
S
T
A
R
T
WORD
ADDRESS (n)
S
SDA LINE
CONTROL
BYTE
S
T
O
P
DATA (n)
P
S
A
C
K
A
C
K
BUS ACTIVITY
FIGURE 8-3:
S
T
O
P
DATA
A
C
K
BUS ACTIVITY
FIGURE 8-2:
Sequential Read
N
O
A
C
K
A
C
K
SEQUENTIAL READ
BUS ACTIVITY
MASTER
CONTROL
BYTE
DATA n
DATA n + 1
DATA n + 2
DATA n + X
S
T
O
P
P
SDA LINE
BUS ACTIVITY
 1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer
A
C
K
A
C
K
A
C
K
A
C
K
N
O
A
C
K
DS21210D-page 9
24LC024/24LC025
NOTES:
DS21210D-page 10
This Material Copyrighted by Its Respective Manufacturer
 1999 Microchip Technology Inc.
24LC024/24LC025
24LC024/24LC025 PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office..
24LC024/24LC025
—
/P
Package:
Temperature
Range:
Device:
P = Plastic DIP (300 mil Body), 8-lead
SN = Plastic SOIC (150 mil Body)
ST = TSSOP, 8-lead
Blank = 0°C to +70°C
I = –40°C to +85°C
24LC024
24LC024T
24LC025
24LC025T
2.K I2C Serial EEPROM with WP
2 K I2C Serial EEPROM with WP pin
(Tape and Reel)
2K I2C Serial EEPROM
2K I2C Serial EEPROM (Tape and Reel)
Sales and Support
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1. Your local Microchip sales office
2. The Microchip Corporate Literature Center U.S. FAX: (602) 786-7277
3. The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
 1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer
DS21210D-page 11
WORLDWIDE SALES AND SERVICE
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AMERICAS (continued)
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Two Prestige Place, Suite 150
Miamisburg, OH 45342
Tel: 937-291-1654 Fax: 937-291-9175
Detroit
Microchip Technology Inc.
Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
Farmington Hills, MI 48334
Tel: 248-538-2250 Fax: 248-538-2260
Los Angeles
Microchip Technology Inc.
18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: 949-263-1888 Fax: 949-263-1338
New York
Microchip Technology Inc.
150 Motor Parkway, Suite 202
Hauppauge, NY 11788
Tel: 631-273-5305 Fax: 631-273-5335
San Jose
Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408-436-7950 Fax: 408-436-7955
ASIA/PACIFIC
Hong Kong
ASIA/PACIFIC (continued)
Taiwan, R.O.C
Microchip Technology Taiwan
10F-1C 207
Tung Hua North Road
Taipei, Taiwan, ROC
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
EUROPE
Beijing
United Kingdom
Microchip Technology, Beijing
Unit 915, 6 Chaoyangmen Bei Dajie
Dong Erhuan Road, Dongcheng District
New China Hong Kong Manhattan Building
Beijing 100027 PRC
Tel: 86-10-85282100 Fax: 86-10-85282104
Arizona Microchip Technology Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5858 Fax: 44-118 921-5835
India
Denmark
Microchip Technology Inc.
India Liaison Office
No. 6, Legacy, Convent Road
Bangalore 560 025, India
Tel: 91-80-229-0061 Fax: 91-80-229-0062
Microchip Technology Denmark ApS
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: 45 4420 9895 Fax: 45 4420 9910
Japan
France
Microchip Technology Intl. Inc.
Benex S-1 6F
3-18-20, Shinyokohama
Kohoku-Ku, Yokohama-shi
Kanagawa 222-0033 Japan
Tel: 81-45-471- 6166 Fax: 81-45-471-6122
Arizona Microchip Technology SARL
Parc d’Activite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79
Korea
Germany
Microchip Technology Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea
Tel: 82-2-554-7200 Fax: 82-2-558-5934
Arizona Microchip Technology GmbH
Gustav-Heinemann-Ring 125
D-81739 München, Germany
Tel: 49-89-627-144 0 Fax: 49-89-627-144-44
Shanghai
Arizona Microchip Technology SRL
Centro Direzionale Colleoni
Palazzo Taurus 1 V. Le Colleoni 1
20041 Agrate Brianza
Milan, Italy
Tel: 39-039-65791-1 Fax: 39-039-6899883
Microchip Technology
RM 406 Shanghai Golden Bridge Bldg.
2077 Yan’an Road West, Hong Qiao District
Shanghai, PRC 200335
Tel: 86-21-6275-5700 Fax: 86 21-6275-5060
Italy
11/15/99
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999. The
Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs and microperipheral
products. In addition, Microchip’s quality
system for the design and manufacture of
development systems is ISO 9001 certified.
All rights reserved. © 1999 Microchip Technology Incorporated. Printed in the USA. 11/99
Printed on recycled paper.
Information contained in this publication regarding device applications and the like is intended for suggestion only and may be superseded by updates. No representation or warranty is given and no liability is assumed
by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products
as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. The Microchip
logo and name are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. All rights reserved. All other trademarks mentioned herein are the property of their respective companies.
 1999 Microchip Technology Inc.
This Material Copyrighted by Its Respective Manufacturer