AT25256B-SSHL-B Atmel, AT25256B-SSHL-B Datasheet

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AT25256B-SSHL-B

Manufacturer Part Number
AT25256B-SSHL-B
Description
EEPROM 256Kbit; SPI Bus High Spd; Mode 0 & 3
Manufacturer
Atmel
Datasheets

Specifications of AT25256B-SSHL-B

Memory Size
256Kbit
Memory Configuration
32768 X 8
Interface Type
Serial, SPI
Clock Frequency
3MHz
Supply Voltage Range
1.8V To 5.5V
Memory Case Style
SOIC
No. Of Pins
8
Rohs Compliant
Yes
Density
256Kb
Organization
32Kx8
Access Time (max)
80ns
Frequency (max)
5MHz
Write Protection
Yes
Data Retention
100Year
Operating Supply Voltage (typ)
2.5/3.3/5V
Package Type
SOIC
Operating Temp Range
-40C to 85C
Supply Current
10mA
Operating Supply Voltage (min)
1.8V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
Description
The AT25128B/256B provides 131,072/262,144 bits of serial electrically-erasable pro-
grammable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits
each. The device is optimized for use in many industrial and commercial applications
where low-power and low-voltage operation are essential. The devices are available
in space saving 8-lead SOIC, 8-lead TSSOP, 8-ball VFBGA and 8-lead UDFN pack-
ages. In addition, the entire family is available in 1.8V (1.8V to 5.5V).
The AT25128B/256B is enabled through the Chip Select pin (CS) and accessed via a
3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and
Serial Clock (SCK). All programming cycles are completely self-timed, and no sepa-
rate Erase cycle is required before Write.
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
Data Sheet Describes Mode 0 Operation
Low-voltage and Standard-voltage Operation
20 MHz Clock Rate (5V)
64-byte Page Mode and Byte Write Operation
Block Write Protection
Write Protect (WP) Pin and Write Disable Instructions for Both Hardware and Software
Data Protection
Self-timed Write Cycle (5 ms Max)
High-reliability
Green (Pb/Halide-free/RoHS Compliant) Packaging Options
Die Sales: Wafer Form, Waffle Pack, and Bumped Die
– 1.8 (VCC = 1.8V to 5.5V)
– Protect 1/4, 1/2, or Entire Array
– Endurance: 1 Million Write Cycles
– Data Retention: >100 Years
SPI Serial
EEPROMS
128K (16,384 x 8)
256K (32,768 x 8)
AT25128B
AT25256B
Preliminary
8593C–SEEPR–8/09

Related parts for AT25256B-SSHL-B

AT25256B-SSHL-B Summary of contents

Page 1

... Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). All programming cycles are completely self-timed, and no sepa- rate Erase cycle is required before Write. SPI Serial EEPROMS 128K (16,384 x 8) 256K (32,768 x 8) AT25128B AT25256B Preliminary 8593C–SEEPR–8/09 ...

Page 2

Figure 0-1. Pin Configurations Table 0-1. Pin CS SCK SI SO GND HOLD NC Block Write protection is enabled by programming the status register with top ¼, top ½ or entire array of write protection. Separate Program ...

Page 3

Figure 1-1. Block Diagram (1) Table 1-1. Pin Capacitance Applicable over recommended operating range from T Symbol Test Conditions C Output Capacitance (SO) OUT C Input Capacitance (CS, SCK, SI, WP, HOLD) IN Notes: 1. This parameter is characterized and ...

Page 4

Table 1-2. DC Characteristics Applicable over recommended operating range from +1.8V to +5.5V(unless otherwise noted) CC Symbol Parameter V Supply Voltage CC1 V Supply Voltage CC2 V Supply Voltage CC3 I Supply Current CC1 I Supply Current ...

Page 5

... HOLD to Output High Output Disable Time DIS t Write Cycle Time WC (1) Endurance 3.3V, 25°C, Page Mode Notes: 1. This parameter is characterized and is not 100% tested. Contact Atmel for further information. 8593C–SEEPR–8/09 AT25128B/256B [Preliminary] = 40° 85° Specified, – Voltage Min 20 4.5–5.5 40 2.5– ...

Page 6

Serial Interface Description MASTER: SLAVE: operates as a slave. TRANSMITTER/RECEIVER: transmission (SO) and reception (SI). The Most Significant Bit (MSB) is the first bit transmitted and received. MSB: SERIAL-OP CODE: After the device is selected with CS going low, ...

Page 7

Figure 1-2. SPI Serial Interface 2. Functional Description The AT25128B/256B is designed to interface directly with the synchronous serial peripheral interface (SPI) of the 6800 type series of microcontrollers. The AT25128B/256B utilizes an 8-bit instruction register. The list of instructions ...

Page 8

... WRITE STATUS REGISTER (WRSR): levels of protection. The AT25128B/256B is divided into four array segments. Top quarter (1/4), top half (1/2), or all of the memory segments can be protected. Any of the data within any selected segment will therefore be read only. The block write protection levels and correspond- ...

Page 9

... Low 0 Protected Low 1 Protected High 0 Protected High 1 Protected (Table 2-6). Upon completion, any data on the SI line will be ignored. The data AT25256B None None 6000 – 7FFF 4000 – 7FFF 0000 – 7FFF Unprotected Blocks Status Register Protected Protected Writable Writable Protected ...

Page 10

... CS is brought high. A new CS falling edge is required to re-initiate the serial communication. Table 2-6. 3. Timing Diagram (for SPI Mode 0 (0,0) Figure 3-1. Synchronous Data Timing CSS V IH SCK HI AT25128B/256B [Preliminary] 10 Address Key Address AT25128B A N Don’t Care Bits VALID IN AT25256B A • • CSH • DIS HI-Z 8593C–SEEPR–8/09 ...

Page 11

Figure 3-2. WREN Timing Figure 3-3. WRDI Timing Figure 3-4. RDSR Timing SCK INSTRUCTION SI HIGH IMPEDANCE SO 8593C–SEEPR–8/09 AT25128B/256B [Preliminary MSB ...

Page 12

Figure 3-5. WRSR Timing Figure 3-6. READ Timing Figure 3-7. WRITE Timing AT25128B/256B [Preliminary] 12 8593C–SEEPR–8/09 ...

Page 13

Figure 3-8. HOLD Timing CS SCK HOLD SO 8593C–SEEPR–8/09 AT25128B/256B [Preliminary ...

Page 14

... Catalog Numbering Scheme AT 25 128 B – Atmel Designator Product Family Device Density 128 = 128k 256 = 256k Device Revision AT25128B/256B [Preliminary Shipping Carrier Option B or blank = Bulk (tubes Tape and Reel Operating Voltage L = 1.8V to 5.5V Packaged Device Grade or Wafer/Die Thickness H=Green, NiPdAu lead finish, Industrial Temperature range (-40° ...

Page 15

Package Ordering Information 4.1 AT25128B Ordering Information Table 4-1. AT25128B Ordering Information Ordering Code (1) AT25128B-SSHL-B (2) AT25128B-SSHL-T (1) AT25128B-XHL-B (2) AT25128B-XHL-T (1) AT25128B-MAHL-T (2) AT25128B-CUL-T (2) AT25128B-W11L AT25128B-WT11L Notes: 1. “U” designates Green package + RoHS compliant. 2. ...

Page 16

... AT25256B Ordering Information Table 4-2. AT25256B Ordering Information Ordering Code (1) AT25256B-SSHL-B (2) AT25256B-SSHL-T (1) AT25256B-XHL-B (2) AT25256B-XHL-T AT25256B-MAHL-T (1) AT25256B-CUL-T (2) AT25256B-W11L AT25256B-WT11L Notes: 1. “U” designates Green package + RoHS compliant. 2. Available in waffle pack and wafer form; order as SL788 for wafer form. Bumped die available upon request. Please contact Serial Interface Marketing ...

Page 17

... Y = SEAL YEAR 6: 2006 0: 2010 7: 2007 1: 2011 8: 2008 2: 2012 9: 2009 3: 2013 AT25128B-XHL TOP MARK Pin 1 Indicator (Dot |---|---|---|---|---|---| |---|---|---|---|---|---| |---|---|---|---|---|---|---| ATMEL LOT NUMBER |---|---|---|---|---|---|---| @ = Country of Ass SEAL YEAR 8: 2008 2: 2012 9: 2009 3: 2013 0: 2010 4: 2014 1: 2011 5: 2015 8593C–SEEPR–8/09 AT25128B/256B [Preliminary] Seal Year | Seal Week | | | ...

Page 18

... AT25128B-MAHL TOP MARK |---|---|---| 5 D |---|---|---| H L |---|---|---| Y X |---|---|---| * | Pin 1 Indicator (Dot YEAR OF ASSEMBLY @ = Country of Ass ATMEL LOT NUMBER TO COORESPOND WITH TRACE CODE LOG BOOK. (e. AA, AB, AC,...AX, AY, AZ SEAL YEAR 6: 2006 0: 2010 7: 2007 1: 2011 8: 2008 2: 2012 9: 2009 3: 2013 AT25128B/256B [Preliminary 8593C–SEEPR–8/09 ...

Page 19

... |---|---|---|---|---| * <-- Pin 1 Indicator B = Country of Origin Y = One Digit Year Code M = One Digit Month Code XX = TRACE CODE (ATMEL LOT NUMBERS TO CORRESPOND WITH TRACE CODE LOG BOOK) (e. AA, AB...YZ, ZZ ONE DIGIT YEAR CODE 4: 2004 7: 2007 5: 2005 8: 2008 6: 2006 9: 2009 M = SEAL MONTH (USE ALPHA DESIGNATOR A-L) ...

Page 20

... AT25256B Part Markings AT25256B-SSHL TOP MARK |---|---|---|---|---|---|---|---| |---|---|---|---|---|---|---|---| |---|---|---|---|---|---|---|---| * Lot Number |---|---|---|---|---|---|---|---| | Pin 1 Indicator (Dot Country of Ass SEAL YEAR 6: 2006 0: 2010 7: 2007 1: 2011 8: 2008 2: 2012 9: 2009 3: 2013 AT25256B-XHL TOP MARK Pin 1 Indicator (Dot |---|---|---|---|---|---| |---|---|---|---|---|---| |---|---|---|---|---|---|---| ATMEL LOT NUMBER |---|---|---|---|---|---|---| @ = Country of Ass SEAL YEAR 8: 2008 2: 2012 9: 2009 3: 2013 0: 2010 ...

Page 21

... AT25256B-MAHL TOP MARK |---|---|---| 5 E |---|---|---| H L |---|---|---| Y X |---|---|---| * | Pin 1 Indicator (Dot YEAR OF ASSEMBLY @ = Country of Ass ATMEL LOT NUMBER TO COORESPOND WITH TRACE CODE LOG BOOK. (e. AA, AB, AC,...AX, AY, AZ SEAL YEAR 6: 2006 0: 2010 7: 2007 1: 2011 8: 2008 2: 2012 9: 2009 3: 2013 8593C–SEEPR–8/09 AT25128B/256B [Preliminary ...

Page 22

... AT25256B-CUL TOP MARK |---|---|---|---| |---|---|---|---|---| |---|---|---|---|---| * <-- Pin 1 Indicator B = Country of Origin Y = One Digit Year Code M = One Digit Month Code XX = TRACE CODE (ATMEL LOT NUMBERS TO CORRESPOND WITH TRACE CODE LOG BOOK) (e. AA, AB...YZ, ZZ ONE DIGIT YEAR CODE 4: 2004 7: 2007 5: 2005 8: 2008 6: 2006 9: 2009 M = SEAL MONTH (USE ALPHA DESIGNATOR A-L) ...

Page 23

... JEDEC SOIC TOP VIEW TOP VIEW e e SIDE VIEW SIDE VIEW Note: These drawings are for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. Package Drawing Contact: packagedrawings@atmel.com 8593C–SEEPR–8/09 AT25128B/256B [Preliminary ...

Page 24

... VFBGA Notes: 1. This drawing is for general information. 2. Dimension 'b' is measured at the maximum solder ball diameter. 3. Solder ball composition shall be 95.5Sn-4.0Ag-.5Cu. Package Drawing Contact: packagedrawings@atmel.com AT25128B/256B [Preliminary] 24 TITLE 8U2-1, 8 ball, 2.35 x 3.73 mm Body, 0.75 mm pitch VFBGA Package (VFBGA) COMMON DIMENSIONS ...

Page 25

... Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.08 mm total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot. Minimum space between protrusion and adjacent lead is 0.07 mm. 5. Dimension D and determined at Datum Plane H. Package Drawing Contact: packagedrawings@atmel.com 8593C–SEEPR–8/09 AT25128B/256B [Preliminary ...

Page 26

... UDFN 1 Pin (8x) 8 Pin (R0.10 (6x) L (8x) Package Drawing Contact: packagedrawings@atmel.com AT25128B/256B [Preliminary 0. TITLE 8MA2, 8-pad 0.6 mm Body, Thermally Enhanced Plastic Ultra Thin Dual Flat No Lead Package (UDFN) C COMMON DIMENSIONS (Unit of Measure = mm) MIN MAX SYMBOL NOM NOTE D 2.00 BSC E 3.00 BSC D2 1 ...

Page 27

Revision History Doc. Rev. 8593C 8593B 8593A 8593C–SEEPR–8/09 AT25128B/256B [Preliminary] Date Comments 8/2009 Updated Category Numbers 5/2009 Updated ordering info and part markings 1/2009 Initial document release. 27 ...

Page 28

... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...

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