34LC02-E/P Microchip Technology, 34LC02-E/P Datasheet
34LC02-E/P
Specifications of 34LC02-E/P
Related parts for 34LC02-E/P
34LC02-E/P Summary of contents
Page 1
... Description: The Microchip Technology Inc. 34AA02/34LC02 (34XX02 Kbit Electrically Erasable PROM capable of operation across a broad voltage range (1.7V to 5.5V). This device has two software write- protect features for the lower half of the array, as well as an external pin that can be used to write-protect the entire array ...
Page 2
... Block Diagram I/O Memory Control Control Logic Logic XDEC SDA SCL DS22029E-page 2 HV Generator Software write- protected area (00h-7Fh) Standard Array Write-Protect Circuitry YDEC Sense Amp. R/W Control 2010 Microchip Technology Inc. ...
Page 3
... I write Operating current CC D10 I read CC D11 I Standby current CCS Note: This parameter is periodically sampled and not 100% tested. 2010 Microchip Technology Inc. 34AA02/34LC02 V = +1.7V to +5.5V CC Industrial (I -40°C to +85°C A Automotive (E):T = -40°C to +125°C A Min. Typ. Max. Units — ...
Page 4
... CC 1.8V V 5.5V CC 2.5V V 5.5V (34LC02) CC 1.7V V < 1.8V CC 1.8V V 5.5V CC 2.5V V 5.5V (34LC02) CC 1.7V V < 1.8V CC 1.8V V 5.5V CC 2.5V V 5.5V (34LC02) CC 1.7V V < 1.8V CC 1.8V V ...
Page 5
... FIGURE 1-1: BUS TIMING DATA 5 SCL 7 3 SDA SDA Out WP 2010 Microchip Technology Inc. 34AA02/34LC02 (protected) 11 (unprotected DS22029E-page 5 ...
Page 6
... FUNCTIONAL DESCRIPTION The 34XX02 has two Software Write-Protect features that allow you to protect half of the array from being written (Addresses 00h-7Fh). One command, Software Write-Protect (SWP) will prevent writes to half of the array and is resettable by using the Clear Software Write-Protect (CSWP) command. The other command ...
Page 7
... Slave Address 2010 Microchip Technology Inc. 34AA02/34LC02 (D) (D) Address or Data Acknowledge Allowed Valid to Change 4.0 WRITE OPERATIONS 4.1 Byte Write 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, are placed onto the bus by the master transmitter ...
Page 8
... If an attempt is made to write to the array when the hardware write protection has been enabled, the device will acknowl- edge the command, but no data will be written. The write cycle time must be observed even if the write protection is enabled ...
Page 9
... Read or Write command. See Figure 5-1 for flow diagram. FIGURE 5-1: ACKNOWLEDGE POLLING FLOW Send Write Command Send Stop Condition to Initiate Write Cycle Send Start Send Control Byte with R Did Device No Acknowledge (ACK = 0)? Yes Next Operation 2010 Microchip Technology Inc. 34AA02/34LC02 DS22029E-page 9 ...
Page 10
... READ OPERATION 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 ‘ 1 ’. There are three basic types of read operations: current address read, random read and sequential read. ...
Page 11
... FIGURE 6-2: RANDOM READ S T Bus Activity Control A Master Byte SDA Line Bus Activity FIGURE 6-3: SEQUENTIAL READ Bus Activity Control Master Byte Data (n) SDA Line A Bus Activity C K 2010 Microchip Technology Inc. 34AA02/34LC02 S T Word Control A Address (n) Byte Data ( Data ( ...
Page 12
... WRITE PROTECTION The 34XX02 has two software write-protect features (SWP and PSWP) that allows the lower half of the array (addresses 00h-7Fh write-protected, as well pin that can be used to protect the entire array. The permanent software write-protect feature is enabled by sending the device a special command. ...
Page 13
... WRITE in lower 128 Protected with SWP 1 PSWP, SWP, or CSWP 0 Not Protected PSWP, SWP, or CSWP 1 TABLE 7-3: ACKNOWLEDGE TABLE FOR WRITE OR WRITE PROTECTION WITH R Status Permanently Protected Protected with SWP Not protected 2010 Microchip Technology Inc. 34AA02/34LC02 Address Pins Device Type Identifier ...
Page 14
... PIN DESCRIPTIONS The descriptions of the pins are listed in Table 8-1. TABLE 8-1: PIN FUNCTION TABLE Symbol PDIP SOIC SDA 5 5 SCL 8.1 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. ...
Page 15
... NNN 8-Lead MSOP XXXXXT YWWNNN 8-Lead 2x3 TDFN XXX YWW NN Part Number 34AA02 34LC02 2010 Microchip Technology Inc. 34AA02/34LC02 Example: 34AA02 I/P Example: 34LC02I SN Example: Example: Example: 1st Line Marking Codes TSSOP MSOP I-Temp 34A2 34AA2T AJ2 34L2 34LC2T AJ5 e 3 ...
Page 16
... Please visit www.microchip.com/Pbfree for the latest information on Pb-free conversion. *Standard OTP marking consists of Microchip part number, year code, week code, and traceability code. DS22029E-page 16 Example: SOT-23 Marking Codes Device SKEC 34AA02 34LC02 Pb-free topside mark is same; Pb-free noted only on carton label. I-Temp E-Temp SLNN SKNN SUNN STNN ...
Page 17
... Microchip Technology Inc. 34AA02/34LC02 DS22029E-page 17 ...
Page 18
... DS22029E-page 18 α φ β 2010 Microchip Technology Inc. ...
Page 19
... Microchip Technology Inc. 34AA02/34LC02 DS22029E-page 19 ...
Page 20
... DS22029E-page 20 φ I 2010 Microchip Technology Inc. ...
Page 21
... Microchip Technology Inc. 34AA02/34LC02 I φ DS22029E-page 21 ...
Page 22
... DS22029E-page 22 2010 Microchip Technology Inc. ...
Page 23
... Microchip Technology Inc. 34AA02/34LC02 DS22029E-page 23 ...
Page 24
... DS22029E-page 24 I 2010 Microchip Technology Inc. φ ...
Page 25
... Original release of this document. Revision B (2/2007) Replaced Package Drawings. Revision C (2/2008) Added TDFN and SOT-23 Package info; Removed “VL” Part. Revision D (4/2008) Updated Product Identification System table, example (e). Revision E (01/2010) Revised SOT-23 and TDFN marking codes. 2010 Microchip Technology Inc. 34AA02/34LC02 DS22029E-page 25 ...
Page 26
... NOTES: DS22029E-page 26 2010 Microchip Technology Inc. ...
Page 27
... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. 2010 Microchip Technology Inc. 34AA02/34LC02 CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • ...
Page 28
... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: 34AA02/34LC02 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 29
... C Serial EEPROM 2 c) 34AA02T-E/MS: C Serial EEPROM Automotive Temperature, 1.7V, MSOP 2 package C Serial EEPROM 2 C Serial EEPROM d) 34LC02-I/P: 2.2V, PDIP package 34LC02-I/MNY: Industrial Temperature, e) 2.2V, DFN package f) 34LC02T-E/MS: Automotive Temperature, 2.2V, MSOP package Industrial Temperature, Tape and Reel, Industrial Temperature, Tape ...
Page 30
... NOTES: DS22029E-page 30 2010 Microchip Technology Inc. ...
Page 31
... 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 32
... 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 2010 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 ...