25AA320AT-E/MNY MICROCHIP [Microchip Technology], 25AA320AT-E/MNY Datasheet
25AA320AT-E/MNY
Related parts for 25AA320AT-E/MNY
25AA320AT-E/MNY Summary of contents
Page 1
... The Microchip Technology Inc. 25AA320A/25LC320A * (25XX320A ) are 32 kbit Serial Electrically Erasable PROMs. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus sep- arate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input ...
Page 2
ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................6.5V 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 ...
Page 3
TABLE 1-2: AC CHARACTERISTICS AC CHARACTERISTICS Param. Sym. Characteristic No Clock frequency CLK setup time CSS hold time CSH disable time CSD 5 Tsu Data setup time 6 T ...
Page 4
TABLE 1-2: AC CHARACTERISTICS (CONTINUED) AC CHARACTERISTICS Param. Sym. Characteristic No HOLD hold time HOLD low to output HZ High HOLD high to output valid Internal write cycle time ...
Page 5
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 ...
Page 6
... After the correct READ instruction and address are sent, the data stored in the memory at the selected address is shifted out on the SO pin. The data stored in the memory at the next address can be read sequentially by continuing to pro- vide clock pulses. The internal Address Pointer is auto- matically incremented to the next higher address after each byte of data is shifted out ...
Page 7
... Y Decoder Sense Amp. R/W Control Read data from memory array beginning at selected address Write data to memory array beginning at selected address Reset the write enable latch (disable write operations) Set the write enable latch (enable write operations) Read STATUS register Write STATUS register ...
Page 8
FIGURE 2-2: BYTE WRITE SEQUENCE SCK Instruction High-Impedance SO FIGURE 2-3: PAGE WRITE SEQUENCE ...
Page 9
Write Enable (WREN) and Write Disable (WRDI) The 25XX320A contains a write enable latch. Table 2-4 for the write-protect functionality matrix. This latch must be set before any write operation will be completed internally. The WREN instruction will set ...
Page 10
Read Status Register Instruction (RDSR) The Read Status Register instruction (RDSR) 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: ...
Page 11
Write Status Register Instruction (WRSR) The Write Status Register instruction (WRSR) allows the user to write to the nonvolatile bits in the STATUS register as shown in Table 2-2. The user is able to select one of four levels ...
Page 12
Data Protection The following protection has been implemented to prevent inadvertent writes to the array: • The write enable latch is reset on power-up • A write enable instruction must be issued to set the write enable latch ...
Page 13
PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE Name Pin X-Rotated Number Pin Number Chip Select Input Serial Data Output Write-Protect ...
Page 14
PACKAGING INFORMATION 4.1 Package Marking Information 8-Lead MSOP (150 mil) XXXXXT YWWNNN 8-Lead PDIP XXXXXXXX T/XXXNNN YYWW 8-Lead SOIC XXXXXXXT XXXXYYWW NNN 8-Lead TSSOP XXXX TYWW NNN 8-Lead 2x3 TDFN XXX YWW NN DS21828F-page 14 Example: MSOP 1st ...
Page 15
Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) NNN Alphanumeric traceability code e 3 Pb-free JEDEC designator ...
Page 16
DS21828F-page 16 I © 2009 Microchip Technology Inc. φ ...
Page 17
Microchip Technology Inc. 25AA320A/25LC320A DS21828F-page 17 ...
Page 18
DS21828F-page 18 α φ β © 2009 Microchip Technology Inc. ...
Page 19
Microchip Technology Inc. 25AA320A/25LC320A DS21828F-page 19 ...
Page 20
DS21828F-page 20 φ I © 2009 Microchip Technology Inc. ...
Page 21
Microchip Technology Inc. 25AA320A/25LC320A DS21828F-page 21 ...
Page 22
DS21828F-page 22 © 2009 Microchip Technology Inc. ...
Page 23
APPENDIX A: REVISION HISTORY Revision B Corrections to Section 1.0, Electrical Characteristics. Revision C (02/07) Deleted X-Rotated TSSOP; Revised Table 1-3; Revised Packaging Information; Replaced Package Drawings; Revised Product ID System. Revision D (03/07) Replaced Package Drawings (Rev. AM). Revision ...
Page 24
NOTES: DS21828F-page 24 © 2009 Microchip Technology Inc. ...
Page 25
THE MICROCHIP WEB SITE 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 ...
Page 26
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 ...
Page 27
... Microchip Technology Inc. 25AA320A/25LC320A /XX X Examples: a) Package 25AA320A-I/MS = 32k-bit, 1.8V Serial EEPROM, Industrial temp., MSOP package 25AA320AT-I/SN = 32k-bit, 1.8V Serial EEPROM, Industrial temp., Tape & Reel, SOIC package 25LC320AT-E/SN = 32k-bit, 2.5V Serial EEPROM, Extended temp., Tape & Reel, SOIC package 25LC320AT-I/ST = 32k-bit, 2.5V Serial EEPROM, Industrial temp., Tape & ...
Page 28
NOTES: DS21828F-page 28 © 2009 Microchip Technology Inc. ...
Page 29
... India. The Company’s quality system processes and procedures are for its PIC MCUs and dsPIC ® 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. logo, MPLAB, PIC, PICmicro, PICSTART, ...
Page 30
W ORLDWIDE AMERICAS ASIA/PACIFIC Corporate Office Asia Pacific Office 2355 West Chandler Blvd. Suites 3707-14, 37th Floor Chandler, AZ 85224-6199 Tower 6, The Gateway Tel: 480-792-7200 Harbour City, Kowloon Fax: 480-792-7277 Hong Kong Technical Support: Tel: 852-2401-1200 http://support.microchip.com Fax: 852-2401-3431 ...