AT24C256B-PU Atmel, AT24C256B-PU Datasheet
AT24C256B-PU
Specifications of AT24C256B-PU
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AT24C256B-PU Summary of contents
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... Die Sales: Wafer Form, Waffle Pack and Bumped Wafers Description The AT24C256B provides 262,144 bits of serial electrically erasable and programma- ble read-only memory (EEPROM) organized as 32,768 words of 8 bits each. The device’s cascadable feature allows up to eight devices to share a common two-wire bus ...
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... Respect to Ground 1.0V to +7.0V Maximum Operating Voltage .......................................... 6.25V DC Output Current........................................................ 5.0 mA Figure 1-1. Block Diagram VCC GND WP SCL SDA AT24C256B 2 *NOTICE: START STOP LOGIC SERIAL CONTROL LOGIC LOAD COMP DEVICE ADDRESS LOAD INC COMPARATOR R/W DATA WORD ...
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... WP pins to a known state. When using a pull-up resistor, Atmel recommends using 10k or less. 3. Memory Organization AT24C256B, 256K SERIAL EEPROM: The 256K is internally organized as 512 pages of 64 bytes each. Random word addressing requires a 15-bit data word address. (1) Table 3-1. ...
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... V Input High Level IH V Output Low Level OL2 V Output Low Level OL1 Notes min and V max are reference only and are not tested AT24C256B 4 = 40C to +85 Test Condition V = 5.0V READ at 400 kHz 5.0V WRITE at 400 kHz 1.8V CC ...
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... Max 400 1.3 0.6 (1) 100 0.05 0.9 1.3 (1) 0.6 0.6 0 100 0.3 300 0 1,000,000 to 0 AT24C256B = +1.8V to +5.5V 100 pF (unless oth- CC 2.5, 5.0-volt Min Max Units 1000 kHz 0.4 µs 0.4 µ 0.05 0.55 µs 0.5 µs 0.25 µs 0.25 µs 0 µ ...
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... EEPROM in 8-bit words. The EEPROM sends a “0” during the ninth clock cycle to acknowledge that it has received each word. STANDBY MODE: The AT24C256B features a low-power standby mode that is enabled upon power-up and after the receipt of the stop bit and the completion of any internal operations. ...
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... WR 5279C–SEEPR–3/09 Dummy Clock Cycles HIGH LOW LOW t t HD.STA HD.DAT t AA ACK t wr STOP CONDITION AT24C256B Start bit SU.DAT t DH (1) START CONDITION Stop bit SU.STO t BUF 7 ...
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... Figure 4-6. Output Acknowledge SCL DATA IN DATA OUT AT24C256B 8 1 START 8 9 ACKNOWLEDGE 5279C–SEEPR–3/09 ...
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... Upon a compare of the device address, the EEPROM will output a “0” compare is not made, the device will return to a standby state. DATA SECURITY: The AT24C256B has a hardware data protection scheme that allows the user to write protect the whole memory when the WP pin 5279C– ...
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... The read/write bit is representative of the operation desired. Only if the internal write cycle has completed will the EEPROM respond with a “0”, allowing the read or write sequence to continue. AT24C256B the nonvolatile memory. All inputs are disabled during this ...
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... The EEPROM acknowledges the device address and serially clocks out the data word. The microcontroller does not respond with a “0” but does generate a following stop condition (see Figure 7-2. Note: 5279C–SEEPR–3/09 Current Address Read Figure 7-2). Random Read * = DON’T CARE bit AT24C256B Figure 7-1). 11 ...
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... The sequential read operation is terminated when the microcontroller does not respond with a “0” but does generate a following stop condition (see Figure 7-3. AT24C256B 12 Figure Sequential Read 7-3). 5279C– ...
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... AT24C256B Ordering Codes Ordering Code AT24C256B-PU (Bulk Form Only) (1) AT24C256BN-SH-B (NiPdAu Lead Finish) (2) AT24C256BN-SH-T (NiPdAu Lead Finish) (1) AT24C256BW-SH-B (NiPdAu Lead Finish) (2) AT24C256BW-SH-T (NiPdAu Lead Finish) (1) AT24C256B-TH-B (NiPdAu Lead Finish) (2) AT24C256B-TH-T (NiPdAu Lead Finish) (2) AT24C256BY7-YH-T (NiPdAu Lead Finish) (2) AT24C256BU2-UU-T AT24C256B-W-11 Notes: 1. “-B” denotes bulk. ...
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... |---|---|---|---|---|---|---|---| * Lot Number |---|---|---|---|---|---|---|---| | Pin 1 Indicator (Dot) 8-SOIC TOP MARK |---|---|---|---|---|---|---|---| |---|---|---|---|---|---|---|---| |---|---|---|---|---|---|---|---| * Lot Number |---|---|---|---|---|---|---|---| | Pin 1 Indicator (Dot) AT24C256B SEAL YEAR Seal Week 6: 2006 | | 7: 2007 8: 2008 2009 Lot Number to Use ALL Characters in Marking BOTTOM MARK Seal Year Y = SEAL YEAR | Seal Week 6: 2006 | | | 7: 2007 8: 2008 2009 ...
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... W 8: 2008 9: 2009 Country of Origin A A Seal Year | Seal Week Y = SEAL YEAR | | | 6: 2006 7: 2007 2008 9: 2009 AT24C256B WW = SEAL WEEK 0: 2010 02 = Week 2 1: 2011 04 = Week 4 2: 2012 :: : :::: : 3: 2013 :: : :::: :: 50 = Week Week SEAL WEEK 0: 2010 02 = Week 2 1: 2011 04 = Week 4 2: 2012 :: : :::: : 3: 2013 :: : :::: :: ...
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... LINE 2-------> ONE DIGIT YEAR CODE 4: 2004 5: 2005 6: 2006 M = SEAL MONTH (USE ALPHA DESIGNATOR A- JANUARY B = FEBRUARY " " """"""" OCTOBER K = NOVEMBER L = DECEMBER TC = TRACE CODE AT24C256B 16 2EBU YMTC |<-- Pin 1 This Corner 7: 2007 8: 2008 9: 2009 5279C–SEEPR–3/09 ...
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... Dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25 mm). 2325 Orchard Parkway San Jose, CA 95131 R 5279C–SEEPR–3/ TITLE 8P3, 8-lead, 0.300" Wide Body, Plastic Dual In-line Package (PDIP) AT24C256B End View COMMON DIMENSIONS (Unit of Measure = inches) MIN SYMBOL NOM MAX A – – 0.210 A2 ...
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... JEDEC SOIC Top View e Side View Note: These drawings are for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R AT24C256B TITLE 8S1, 8-lead (0.150" Wide Body), Plastic Gull Wing ...
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... Values b,C apply to plated terminal. The standard thickness of the plating layer shall measure between 0.007 to .021 mm. 2325 Orchard Parkway San Jose, CA 95131 R 5279C–SEEPR–3/ TOP VIEW SIDE VIEW TITLE 8S2, 8-lead, 0.209" Body, Plastic Small Outline Package (EIAJ) AT24C256B θ θ END VIEW COMMON DIMENSIONS (Unit of Measure = mm) MIN MAX SYMBOL NOM A 1.70 2.16 A1 0.05 0.25 b ...
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... A1 BALL PAD CORNER e (e1) 1. Dimension 'b' is measured at the maximum solder ball diameter. This drawing is for general information only. 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R AT24C256B Top View A1 BALL PAD CORNER (d1) Bottom View 8 Solder Balls TITLE 8U2-1, 8-ball, 2.35 x 3.73 mm Body, 0.75 mm pitch, Small Die Ball Grid Array Package (dBGA2) 1 ...
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... Dimension D and determined at Datum Plane H. 2325 Orchard Parkway San Jose, CA 95131 R 5279C–SEEPR–3/ TITLE 8A2, 8-lead, 4.4 mm Body, Plastic Thin Shrink Small Outline Package (TSSOP) AT24C256B L1 L End View COMMON DIMENSIONS (Unit of Measure = mm) MIN MAX SYMBOL NOM D 2.90 3.00 3 ...
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... SAP PIN 1 INDEX AREA D E 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R AT24C256B 22 A PIN COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN A – A1 0.00 D 5.80 E 4.70 D1 3.30 E1 3. 0.50 TITLE 8Y7, 8-lead (6.00 x 4.90 mm Body) Ultra-Thin SOIC Array Package (UTSAP) Y7 ...
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... Rev. 5279C 5279B 5279A 5279C–SEEPR–3/09 Date Comments Changed the Vcc to 5.5V in the test condition for Isb1 3/2009 3/2008 Format changes to document AT24C256B product with date code 2008 work week 14 (814) or later supports 5Vcc operation 1/2008 Initial document release AT24C256B 23 ...
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... 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 ...