25LC040AT-E/OT Microchip Technology, 25LC040AT-E/OT Datasheet

IC EEPROM 4KBIT 10MHZ SOT23-6

25LC040AT-E/OT

Manufacturer Part Number
25LC040AT-E/OT
Description
IC EEPROM 4KBIT 10MHZ SOT23-6
Manufacturer
Microchip Technology
Datasheets

Specifications of 25LC040AT-E/OT

Memory Size
4K (512 x 8)
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Speed
10MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Package / Case
SOT-23-6
Memory Configuration
512 X 8
Ic Interface Type
Serial, SPI
Clock Frequency
10MHz
Access Time
50ns
Supply Voltage Range
2.5V To 5.5V
Memory Case Style
SOT-23
No. Of Pins
6
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
25LC040AT-E/OTTR
Device Selection Table
Features:
• Max. Clock 10 MHz
• Low-Power CMOS Technology:
• 512 x 8-Bit Organization
• Write Page mode (up to 16 bytes)
• Sequential Read
• Self-timed Erase and Write Cycles (5 ms max.)
• Block Write Protection:
• Built-in Write Protection:
• High Reliability:
• Temperature Ranges Supported:
• Pb-Free and RoHS Compliant
Pin Function Table
© 2009 Microchip Technology Inc.
25AA040A
25LC040A
CS
SO
WP
V
SI
SCK
HOLD
V
- Max. Write Current: 5 mA at 5.5V, 10 MHz
- Read Current: 5 mA at 5.5V, 10 MHz
- Standby Current: 5 μA at 5.5V
- Protect none, 1/4, 1/2 or all of array
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
- Endurance: 1,000,000 Erase/Write cycles
- Data retention: >200 years
- ESD protection: >4000V
- Industrial (I):
- Automotive (E):
SS
CC
Part Number
Name
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
-40°C to +85°C
-40°C to +125°C
V
CC
1.8-5.5V
2.5-5.5V
Function
4K SPI Bus Serial EEPROM
Range
25AA040A/25LC040A
Page Size
16 Bytes
16 Bytes
*25XX040A is used in this document as a generic part number for the
25AA040A and the 25LC040A.
Description:
The Microchip Technology Inc. 25XX040A* is a 4 Kbit
Serial Electrically Erasable Programmable Read-Only
Memory (EEPROM). The memory is accessed via a
simple Serial Peripheral Interface (SPI) compatible
serial bus. The bus signals required are a clock input
(SCK) plus separate data in (SI) and data out (SO)
lines. Access to the device is controlled through a Chip
Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
Chip Select, allowing the host to service higher priority
interrupts.
The 25XX040A is available in standard packages
including 8-lead PDIP and SOIC, and advanced
and rotated TSSOP, 8-lead 2x3 DFN, and 6-lead
SOT-23.
Package Types (not to scale)
packages including 8-lead MSOP, 8-lead TSSOP
V
V
WP
WP
CS
CS
SO
SO
SCK
Temp. Ranges
SS
SS
V
SS
SI
TSSOP/MSOP
1
1
2
2
3
3
4
4
SOT-23
1
2
3
(ST, MS)
I, E
(OT)
I
6
5
4
HOLD
V
V
CS
SO
X-Rotated TSSOP
SO
CS
CC
DD
8
8
7
7
6
6
5
5
V
V
HOLD
HOLD
SCK
SCK
SI
SI
1
2
3
4
CC
CC
(X/ST)
P, MS, SN, ST, MC, OT
P, MS, SN, ST, MC, OT
V
WP
V
WP
CS
SO
CS
SO
Packages
SS
8
7
6
5
SS
SCK
SI
V
WP
1
2
3
4
PDIP/SOIC
1
2
3
4
SS
DFN
DS21827F-page 1
(P, SN)
(MC)
8
7
6
5
8
7
6
5
V
HOLD
SCK
SI
V
HOLD
SCK
SI
CC
CC

Related parts for 25LC040AT-E/OT

25LC040AT-E/OT Summary of contents

Page 1

... Bytes I 16 Bytes I, E Description: The Microchip Technology Inc. 25XX040A Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines ...

Page 2

... CC Test Conditions ≥ 2.7V (Note 1) < 2.7V (Note 1 -400 μ OUT 5.0V (Note 1) = 5.5V 10.0 MHz; CLK = 2.5V 5.0 MHz; CLK = 5.5V = 2.5V = 5.5V, Inputs tied +125° 2.5V, Inputs tied +85°C A © 2009 Microchip Technology Inc. ...

Page 3

... Total Endurance™ Model which can be obtained from our web site: www.microchip.com begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle WC is complete. © 2009 Microchip Technology Inc. 25AA040A/25LC040A Industrial (I -40°C to +85°C A Automotive (E -40° ...

Page 4

... E/W (N Cycles — (Note 1) (Note 2) — 1. 2.5V to 5.5V CC Test Conditions < 5.5V CC < 4.5V CC < 2.5V CC < 5.5V (Note 1) CC < 4.5V (Note 1) CC < 2.5V (Note 1) CC < 5.5V CC < 4.5V CC < 2. OTE 2) OTE © 2009 Microchip Technology Inc. ...

Page 5

... SI HOLD FIGURE 1-2: SERIAL INPUT TIMING CS 2 Mode 1,1 Mode 0,0 SCK MSB in SO FIGURE 1-3: SERIAL OUTPUT TIMING SCK 13 MSB out SO SI © 2009 Microchip Technology Inc. 25AA040A/25LC040A High-impedance n Don’t Care High-impedance 14 Don’t Care LSB in 3 Mode 1,1 ...

Page 6

... BP0 bits (Figure 2-6). Attempting to read a memory array location will not be possible during a write cycle. Polling the WIP bit in the STATUS register is recom- mended in order to determine if a write cycle is in prog- ress. When the write cycle is completed, the write enable latch is reset. © 2009 Microchip Technology Inc. ...

Page 7

... SCK Instruction+Address MSb High-impedance SO © 2009 Microchip Technology Inc. 25AA040A/25LC040A HV Generator EEPROM Array Page Latches Y Decoder Sense Amp. R/W Control Read data from memory array beginning at selected address 011 Write data to memory array beginning at selected address 010 Reset the write enable latch (disable write operations) ...

Page 8

... BYTE WRITE SEQUENCE SCK Instruction+Address MSb FIGURE 2-3: PAGE WRITE SEQUENCE SCK Instruction+Address MSb SCK Data Byte DS21827F-page Lower Address Byte High-impedance Lower Address Byte Data Byte Twc Data Byte Data Byte Data Byte n (16 max © 2009 Microchip Technology Inc. ...

Page 9

... SI SO FIGURE 2-5: WRITE DISABLE SEQUENCE (WRDI) CS SCK SI SO © 2009 Microchip Technology Inc. 25AA040A/25LC040A The following is a list of conditions under which the write enable latch will be reset: • Power-up See • WRDI instruction successfully executed • WRSR instruction successfully executed • ...

Page 10

... These bits are set by the user issuing the WRSR instruction, which shown in Figure 2-7. These bits are nonvolatile and R R are described in more detail in Table 2-3. WEL WIP ’, no write Data from STATUS Register © 2009 Microchip Technology Inc. ...

Page 11

... STATUS register. The user has the ability to write-protect none, one, two or all four of the segments of the array as shown in Table 2-3. FIGURE 2-7: WRITE STATUS REGISTER TIMING SEQUENCE (WRSR SCK Instruction Note: An internal write cycle (T WC sequence. © 2009 Microchip Technology Inc. 25AA040A/25LC040A TABLE 2-3: BP1 Data to STATUS Register ...

Page 12

... The device is in low-power Standby mode ( • The write enable latch is reset • high-impedance state • A high-to-low-level transition required to enter active state Protected Blocks Unprotected Blocks Protected Protected Protected Protected Protected Writable STATUS Register Protected Protected Writable © 2009 Microchip Technology Inc. ...

Page 13

... However write cycle is already in progress, WP going low will not change or disable the write cycle. See Table 2-4 for the Write-Protect Functionality Matrix. © 2009 Microchip Technology Inc. 25AA040A/25LC040A 3.4 Serial Input (SI) The SI pin is used to transfer data into the device. It receives instructions, addresses and data ...

Page 14

... Example: 5A4A I627 1L7 Example: 5L4AI 6271L7 1st Line Marking Codes MSOP SOT-23 Rotated I Temp. E Temp. — 32NN A4AX 5A4AT L4AX 5L4AT 35NN 36NN NN = Alphanumeric traceability code DFN I Temp. E Temp. — 421 424 425 © 2009 Microchip Technology Inc. ...

Page 15

... Package Marking Information (continued) 8-Lead 2X3 DFN XXX YWW NN 6-Lead SOT-23 XXNN © 2009 Microchip Technology Inc. 25AA040A/25LC040A Example: 421 627 L7 Example: 32L7 DS21827F-page 15 ...

Page 16

... DS21827F-page 16 © 2009 Microchip Technology Inc. ...

Page 17

... Microchip Technology Inc. 25AA040A/25LC040A α φ β DS21827F-page 17 ...

Page 18

... DS21827F-page 18 © 2009 Microchip Technology Inc. ...

Page 19

... Microchip Technology Inc. 25AA040A/25LC040A φ I DS21827F-page 19 ...

Page 20

... DS21827F-page 20 I © 2009 Microchip Technology Inc. φ ...

Page 21

... Microchip Technology Inc. 25AA040A/25LC040A DS21827F-page 21 ...

Page 22

... DS21827F-page 22 © 2009 Microchip Technology Inc. ...

Page 23

... Microchip Technology Inc. 25AA040A/25LC040A I φ DS21827F-page 23 ...

Page 24

... AP); Revise Table 1-1, Param. D004, D007, D008; Revise Table 1-2, Param ,10. Revision E Revised Features (Pb-free); Replaced Package Drawings. Revision F (7/2009) Replaced 6-Lead SOT-23 package drawing (from CH to OT); Revised 8-Lead DFN (MC); Added 8-Lead DFN (MC) Land Pattern. DS21827F-page 24 © 2009 Microchip Technology Inc. ...

Page 25

... 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. 25AA040A/25LC040A CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • ...

Page 26

... 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? DS21827F-page 26 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21827F © 2009 Microchip Technology Inc. ...

Page 27

... Serial EEPROM, Industrial temp., Tape & Reel, SOIC package 25LC040AT-I/ST = 4k-bit, 16-byte page, 2.5V Serial EEPROM, Industrial temp., Tape & Reel, TSSOP package 25LC040AT-E/SN = 4k-bit, 16-byte page, 2.5V Serial EEPROM, Extended temp., Tape & Reel, SOIC package 25LC040AX-E/ST = 4k-bit, 16-byte page, 2.5V Serial EEPROM, Extended temp., rotated ...

Page 28

... NOTES: DS21827F-page 28 © 2009 Microchip Technology Inc. ...

Page 29

... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, 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. ...

Page 30

... Fax: 886-3-6578-370 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 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

Related keywords