25AA040-I/SN Microchip Technology, 25AA040-I/SN Datasheet
25AA040-I/SN
Specifications of 25AA040-I/SN
5AA040-I/SNG
Available stocks
Related parts for 25AA040-I/SN
25AA040-I/SN Summary of contents
Page 1
... Temperature ranges supported: - Industrial (I Automotive (E) (25C040): -40°C to +125°C Description: The Microchip Technology Inc. 25AA040/25LC040/ * 25C040 (25XX040 ) Kbit serial Electrically Erasable PROM. 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
... ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................7.0V CC All inputs and outputs w.r.t. V .......................................................................................................... -0. Storage temperature .................................................................................................................................-65°C to 150°C Ambient temperature under bias ...............................................................................................................-65°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 ...
Page 3
... Note 1: This parameter is periodically sampled and not 100% tested. 2: 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 our web site: www.microchip.com. © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 Industrial (I -40°C to +85°C ...
Page 4
... FIGURE 1-1: HOLD TIMING CS 16 SCK 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 DS21204E-page High-impedance n Don’t Care High-impedance 14 Don’t Care LSB in 3 Mode 1,1 ...
Page 5
... TABLE 1-3: AC TEST CONDITIONS AC Waveform 0. 0. 4.0V HI Timing Measurement Reference Level Input Output Note 1: For V 4. For V > 4.0V CC © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 FIGURE 1-4: — (Note 1) (Note TEST CIRCUIT 2.25 K 100 pF 1.8 K DS21204E-page 5 ...
Page 6
... PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Name PDIP SOIC TSSOP Chip Select Input Serial Data Output Write-Protect Pin Ground Serial Data Input SCK Serial Clock Input HOLD Hold Input Supply Voltage CC 2 ...
Page 7
... A is the 9 address bit necessary to fully address 512 bytes. 8 © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 3.3 Write Sequence Prior to any attempt to write data to the 25XX040, the write enable latch must be set by issuing the WREN instruction (Figure 3-4). This is done by setting CS low and then clocking out the proper instruction into the 25XX040 ...
Page 8
... FIGURE 3-1: READ SEQUENCE SCK Instruction High-impedance SO FIGURE 3-2: BYTE WRITE SEQUENCE SCK Instruction FIGURE 3-3: PAGE WRITE SEQUENCE SCK Instruction SCK Data Byte DS21204E-page Lower Address Byte Lower Address Byte High-impedance Lower Address Byte Data Byte Don’t Care ...
Page 9
... FIGURE 3-5: WRITE DISABLE SEQUENCE CS SCK SI SO © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 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 • WRITE instruction successfully executed • ...
Page 10
... Read Status Register (RDSR) The RDSR instruction provides access to the STATUS register. The STATUS register may be read at any time, even during a write cycle. The STATUS register is formatted as follows BP1 BP0 The Write-In-Process (WIP) bit indicates whether the 25XX040 is busy with a write operation. When set to a ‘ ...
Page 11
... Protected Blocks Low X High 0 High 1 © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 3.8 Power-On State The 25XX040 powers on in the following state: • The device is in low-power Standby mode ( • The write enable latch is reset • high-impedance state • A low level required to enter active state ...
Page 12
... 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. DS21204E-page 12 Example: 25AA040 e I/P 3 1L7 0601 Example: 25AA040I 0601 1L7 Example: 5A4X 0601 1L7 ...
Page 13
... 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-001 Drawing No. C04-018 © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www ...
Page 14
... Plastic Small Outline (SN) – Narrow, 150 mil (SOIC Units Dimension Limits n Number of Pins p Pitch Overall Height A Molded Package Thickness A2 Standoff § A1 Overall Width E Molded Package Width E1 Overall Length D Chamfer Distance h Foot Length L Foot Angle c Lead Thickness Lead Width B Mold Draft Angle Top ...
Page 15
... BSC: Basic Dimension. Theoretically exact value shown without tolerances. See ASME Y14.5M REF: Reference Dimension, usually without tolerance, for information purposes only. See ASME Y14.5M Drawing No. C04-086 © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging D ...
Page 16
... APPENDIX A: REVISION HISTORY Revision D Corrections to Section 1.0, Electrical Characteristics. Revision E (8/2006) Added note to page 1 header (Not recommended for new designs). Added note to package drawings. Updated document format DS21204E-page 16 © 2006 Microchip Technology Inc. ...
Page 17
... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • ...
Page 18
... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: 25AA040/25LC040/25C040 Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this document easy to follow? If not, why? 4 ...
Page 19
... Plastic TSSOP (4.4 mm body), 8-lead © 2006 Microchip Technology Inc. 25AA040/25LC040/25C040 Examples: XXX a) 25AA040-I/P: Industrial Temp., Pattern PDIP package b) 25AA040-I/SN: Industrial Temp., SOIC package c) 25AA040T-I/SN: Tape and Reel, Industrial Temp., SOIC package d) 25AA040X-I/ST: Alternate Pinout, Industrial Temp., TSSOP package e) 25AA040XT-I/ST: Alternate Pinout, Tape and Reel, Industrial Temp ...
Page 20
... NOTES: DS21204E-page 20 © 2006 Microchip Technology Inc. ...
Page 21
... Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, 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 22
... Fax: 886-3-572-6459 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 © 2006 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-3910 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...