24LC256T-I/STG Microchip Technology Inc., 24LC256T-I/STG Datasheet

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24LC256T-I/STG

Manufacturer Part Number
24LC256T-I/STG
Description
Manufacturer
Microchip Technology Inc.
Datasheet
Device Selection Table
Features:
• Low-power CMOS technology:
• 2-wire serial interface bus, I
• Cascadable for up to eight devices
• Self-timed erase/write cycle
• 64-byte Page Write mode available
• 5 ms max. write cycle time
• Hardware write-protect for entire array
• Output slope control to eliminate ground bounce
• Schmitt Trigger inputs for noise suppression
• 1,000,000 erase/write cycles
• Electrostatic discharge protection > 4000V
• Data retention > 200 years
• 8-pin PDIP, SOIC, TSSOP, MSOP and DFN
• Pb-free finishes available
• Temperature ranges:
Package Types
*24XX256 is used in this document as a generic part number for the 24AA256/24LC256/24FC256 devices.
© 2005 Microchip Technology Inc.
Note 1:
24AA256
24LC256
24FC256
- Maximum write current 3 mA at 5.5V
- Maximum read current 400 A at 5.5V
- Standby current 100 nA, typical at 5.5V
packages, 14-lead TSSOP package
- Industrial (I):
- Automotive (E):
Number
Note: * Pins A0 and A1 are no connects for the MSOP package only.
Part
2:
V
A0
A1
A2
SS
100 kHz for V
400 kHz for V
1
2
3
4
2.5-5.5V
1.8-5.5V
1.8-5.5V
PDIP/SOIC
Range
V
CC
256K I
CC
CC
8
7
6
5
-40 C to +85 C
-40 C to +125 C
Max. Clock
< 2.5V.
< 2.5V.
Frequency
400 kHz
2
1 MHz
400 kHz
V
WP
SCL
SDA
C
CC
compatible
(2)
2
(1)
24AA256/24LC256/24FC256
C
Ranges
Temp.
CMOS Serial EEPROM
I, E
I
I
V
A0
A1
A2
SS
TSSOP/MSOP*
1
2
3
4
Description:
The Microchip Technology Inc. 24AA256/24LC256/
24FC256 (24XX256*) is a 32K x 8 (256 Kbit) Serial
Electrically Erasable PROM, capable of operation
across a broad voltage range (1.8V to 5.5V). It has
been developed for advanced, low-power applications
such as personal communications or data acquisition.
This device also has a page write capability of up to 64
bytes of data. This device is capable of both random
and sequential reads up to the 256K boundary.
Functional address lines allow up to eight devices on
the same bus, for up to 2 Mbit address space. This
device is available in the standard 8-pin plastic DIP,
SOIC, TSSOP, MSOP and DFN packages.
Block Diagram
SDA
I/O
8
7
6
5
Control
Logic
V
V
I/O
CC
SS
V
WP
SCL
SDA
SCL
CC
A0 A1A2
Memory
Control
Logic
WP
V
A0
A1
A2
SS
XDEC
1
2
3
4
DFN
DS21203N-page 1
8
7
6
5
HV Generator
Page Latches
Sense Amp.
R/W Control
EEPROM
Array
V
WP
SCL
SDA
YDEC
CC

Related parts for 24LC256T-I/STG

24LC256T-I/STG Summary of contents

Page 1

... Microchip Technology Inc. 24AA256/24LC256/24FC256 2 ™ C CMOS Serial EEPROM Description: Temp. The Microchip Technology Inc. 24AA256/24LC256/ Ranges 24FC256 (24XX256 32K x 8 (256 Kbit) Serial Electrically Erasable PROM, capable of operation (1) I across a broad voltage range (1.8V to 5.5V). It has I, E been developed for advanced, low-power applications I such as personal communications or data acquisition ...

Page 2

... SCL = SDA = V A0, A1, A2 +1. -40°C to +85° -40°C to +125°C A Conditions 2.5V < 2.5V 2.5V (Note 5.0V (Note MHz CLK = 5.5V, SCL = 400 kHz = 5. © 2005 Microchip Technology Inc. ...

Page 3

... This eliminates the need for 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. © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 Electrical Characteristics: Industrial (I ...

Page 4

... T = -40°C to +85° -40°C to +125°C A Conditions 1 2. 5.5V CC 1.8V V 2.5V 24FC256 CC 2 5.5V 24FC256 CC 1.8V V 2.5V CC 2.5V V 5.5V CC 1.8V V 2.5V 24FC256 CC 2.5V V 5.5V 24FC256 CC All except, 24FC256 (Note 1) All except, 24FC256 (Notes 1 and 3) — © 2005 Microchip Technology Inc. ...

Page 5

... CC 400 kHz and 1 MHz). 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. © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 8-pin 8-pin 8-pin TSSOP ...

Page 6

... NOT generating an Acknowledge bit on the last byte that has been clocked out of the slave. In this case, the slave (24XX256) will leave the data line high to enable the master to generate the Stop condition. © 2005 Microchip Technology Inc. an internal ...

Page 7

... SCL SDA Data from transmitte 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. © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 (D) (D) Address or Data Acknowledge Allowed Valid to Change ...

Page 8

... CONTROL BYTE FORMAT Read/Write Bit Chip Select Bits R/W ACK 0 1 Slave Address Acknowledge Bit Address Low Byte A • • • • • • “don’t care” bit © 2005 Microchip Technology Inc. ...

Page 9

... Bus Activity “don’t care” bit K © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 Upon receipt of each word, the six lower Address Pointer bits are internally incremented by one. If the master should transmit more than 64 bytes prior to generating the Stop condition, the address counter will roll over and the previously received data will be over- written ...

Page 10

... Read or Write command. See Figure 7-1 for flow diagram. DS21203N-page 10 FIGURE 7-1: ACKNOWLEDGE POLLING FLOW Send Write Command Send Stop Condition to Initiate Write Cycle Send Start Send Control Byte with R Did Device Acknowledge (ACK = 0)? YES Next Operation © 2005 Microchip Technology Inc. ...

Page 11

... Byte Master SDA Line Bus Activity © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 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 done by sending the word address to the 24XX256 as part of a write operation (R/W bit set to ‘ ...

Page 12

... Microchip part number, year code, week code, and traceability code. For device marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. DS21203N-page 12 Example: 24AA256 I/P e 017 3 0510 Example: 24LC256I e SN 0510 3 017 Example: 24LC256 e I/SM 3 0510017 © 2005 Microchip Technology Inc. ...

Page 13

... TYWW NNN 8-Lead MSOP XXXXXT YWWNNN 8-Lead DFN-S XXXXXXX T/XXXXX YYWW NNN Part No. 24AA256 24LC256 24FC256 © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 Example: Example: 4L256I 510017 Example First Line Marking Codes TSSOP Package Codes MSOP Package Codes 4AD 4A256T 4LD 4L256T ...

Page 14

... E1 .240 .250 .260 D .360 .373 .385 L .125 .130 .135 c .008 .012 .015 B1 .045 .058 .070 B .014 .018 .022 § eB .310 .370 .430 MILLIMETERS MIN NOM MAX 8 2.54 3.56 3.94 4.32 2.92 3.30 3.68 0.38 7.62 7.94 8.26 6.10 6.35 6.60 9.14 9.46 9.78 3.18 3.30 3.43 0.20 0.29 0.38 1.14 1.46 1.78 0.36 0.46 0.56 7.87 9.40 10. © 2005 Microchip Technology Inc. ...

Page 15

... Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-057 © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 ...

Page 16

... A1 .002 .005 .010 E .300 .313 .325 E1 .201 .208 .212 D .202 .205 .210 L .020 .025 .030 .008 .009 .010 B .014 .017 .020 MILLIMETERS MIN NOM MAX 8 1.27 1.78 1.97 2.03 1.75 1.88 1.98 0.05 0.13 0.25 7.62 7.95 8.26 5.11 5.28 5.38 5.13 5.21 5.33 0.51 0.64 0. 0.20 0.23 0.25 0.36 0.43 0. © 2005 Microchip Technology Inc. ...

Page 17

... Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .005” (0.127mm) per side. JEDEC Equivalent: MO-153 Drawing No. C04-086 © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 ...

Page 18

... BSC D .118 BSC L .016 .024 .031 F .037 REF 0° - 8° c .003 .006 .009 B .009 .012 .016 5° - 15° 5° - 15° A2 MILLIMETERS* MIN NOM MAX 8 0.65 BSC - - 1.10 0.75 0.85 0.95 0.00 - 0.15 4.90 BSC 3.00 BSC 3.00 BSC 0.40 0.60 0.80 0.95 REF 0° - 8° 0.08 - 0.23 0.22 - 0.40 5° - 15° 5° - 15° © 2005 Microchip Technology Inc. ...

Page 19

... Tie Bar Width Mold Draft Angle Top *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC equivalent: pending Drawing No. C04-113 © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 EXPOSED METAL ...

Page 20

... APPENDIX A: REVISION HISTORY Revision L Corrections to Section 1.0, Electrical Characteristics. Revision M Added 1.8V 400 kHz option for 24FC256. Revision N Revised Sections 2.1 and 2.4. Removed 14-Lead TSSOP Package. DS21203N-page 20 © 2005 Microchip Technology Inc. ...

Page 21

... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2005 Microchip Technology Inc. 24AA256/24LC256/24FC256 CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • ...

Page 22

... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21203N-page 22 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21203N © 2005 Microchip Technology Inc. ...

Page 23

... High Speed, PDIP package. j) 24FC256-I/SN: 1.8V, High Speed, SOIC package. k) 24FC256T-I/SN: Tape and Reel, Industrial Temp, 1.8V, High Speed, SOIC package l) 24LC256T-I/STG: Industrial Temp, 2.5V, TSSOP package, Tape & Reel, Pb-free m) 24LC256-I/PG: 2.5V, PDIP package, Pb-free Industrial Temp., Industrial Temp., Industrial Temp., Extended Temp., Industrial Temp ...

Page 24

... NOTES: DS21203N-page 24 © 2005 Microchip Technology Inc. ...

Page 25

... 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 Microchip intellectual property rights. © 2005 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...

Page 26

... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2005 Microchip Technology Inc. EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris ...

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