at34c02b ATMEL Corporation, at34c02b Datasheet
at34c02b
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at34c02b Summary of contents
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... The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are essential. The AT34C02B is avail- able in space saving 8-lead JEDEC SOIC, TSSOP, and 8-ball dBGA2 packages and is accessed via a Two-wire serial interface. ...
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... Voltage on Any Pin with Respect to Ground .................................... –1.0V to +7.0V Maximum Operating Voltage .......................................... 6.25V DC Output Current........................................................ 5.0 mA Figure 1. Block Diagram V CC GND WP SCL SDA AT34C02B 2 *NOTICE: START STOP CONTROL LOGIC WRITE PROTECT CIRCUITRY LOAD COMP DEVICE ADDRESS COMPARATOR LOAD R/W DATA WORD ADDR/COUNTER ...
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... Pin Description Table 2. AT34C02B Write Protection Modes Permanent Write Protect WP Pin Status V CC GND or Floating GND or Floating GND or Floating (1) Table 3. Pin Capacitance Applicable over recommended operating range from T Symbol Test Condition C Input/Output Capacitance (SDA) I/O C Input Capacitance ( Note: 1. This parameter is characterized and is not 100% tested. ...
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... Output Low Level V = 3.0V OL2 CC V Output Low Level V = 1.7V OL1 CC Note min and V max are reference only and are not tested AT34C02B 4 = –40°C to +85° +1.7V to +3.6V, (unless otherwise noted Test Condition Min 1.7 READ at 100 kHz WRITE at 100 kHz ...
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Table 5. AC Characteristics Applicable over recommended operating range from T 100 pF (unless otherwise noted) Symbol Parameter f Clock Frequency, SCL SCL t Clock Pulse Width Low LOW t Clock Pulse Width High HIGH t Noise Suppression Time I ...
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... Device Operation AT34C02B 6 AT34C02B, 2K Serial EEPROM: The 2K is internally organized with 16 pages of 16 bytes each. Random word addressing requires a 8-bit data word address. CLOCK and DATA TRANSITIONS: The SDA pin is normally pulled high with an exter- nal device. Data on the SDA pin may change only during SCL low time periods (see Figure 4 on page 7) ...
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Figure 2. Bus Timing SCL: Serial Clock SDA: Serial Data I/O Figure 3. Write Cycle Timing SCL: Serial Clock SDA: Serial Data I/O SCL SDA 8th BIT WORDn Note: 1. The write cycle time t is the time from a ...
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... Figure 5. Start and Stop Condition Figure 6. Output Acknowledge AT34C02B 8 3417E–SEEPR–1/07 ...
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... The next 3 bits are the A2, A1 and A0 device address bits for the AT34C02B EEPROM. These 3 bits must compare to their corresponding hard-wired input pins. The eighth bit of the device address is the read/write operation select bit. A read opera- tion is initiated if this bit is high and a write operation is initiated if this bit is low ...
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... Write Protection AT34C02B 10 The software write protection, once enabled, write protects only the first-half of the array (00H - 7FH) while the hardware write protection, via the WP pin, is used to protect the entire array. PERMANENT SOFTWARE WRITE PROTECTION: The software write protection is enabled by sending a command, similar to a normal write command, to the device which programs the permanent write protect register ...
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Table 8. WP Connected to GND or Floating WP Connected to GND or Floating Permanent Write Protect Register Command R/W Bit PSWP 1010 R 1010 W Programmed 1010 W 1010 W Not Programmed Read PSWP R Programmed Read PSWP R ...
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... R X RSWP Read R X RSWP Set RSWP W X Set RSWP W X Clear W Programmed RSWP Clear W Not Programmed RSWP Read Operations AT34C02B 12 Reversible Write Protect Register Acknowledgment RSWP from Device X ACK X ACK X No ACK X ACK X No ACK X ACK Programmed No ACK Not Programmed ...
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... As long as the EEPROM receives an acknowledge, it will continue to increment the data word address and serially clock out sequential data words. When the memory address limit is reached, the data word address will “roll over” and the sequen- tial read will continue. The sequential read operation is terminated when the microcontroller does not respond with a zero but does generate a following stop condi- tion (see Figure 15 on page 14) ...
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... Figure 12. Page Write Figure 13. Current Address Read Figure 14. Random Read Figure 15. Sequential Read AT34C02B 14 3417E–SEEPR–1/07 ...
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... AT34C02B Ordering Information Ordering Code (2) AT34C02BN-10SU-1.7 (2) AT34C02B-10TU-1.7 (3) AT34C02BY6-10YH-1.7 (2) AT34C02BU3-10UU-1.7 Notes: 1. Not Recommended for new design; Please refer to AT34C02C datasheet. 2. “U” designates Green package + RoHS compliant. 3. “H” designates Green package + RoHS compliant, with NiPdAu Lead Finish. 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline Package (JEDEC SOIC) 8A2 8-lead, 0.170" ...
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... Packaging Information 8S1 – 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 AT34C02B TITLE 8S1, 8-lead (0.150" ...
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TSSOP Pin 1 indicator this corner N Top View Side View Notes: 1. This drawing is for general information only. Refer to JEDEC Drawing MO-153, Variation AA, for proper dimensions, tolerances, datums, ...
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... Dimension b applies to metallized terminal and is measured between 0.15 mm and 0.30 mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, the dimension should not be measured in that radius area. 2325 Orchard Parkway San Jose, CA 95131 R AT34C02B 18 A Pin 1 Index ...
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PIN 1 BALL PAD CORNER Top View PIN 1 BALL PAD CORNER 1 2 (d1 (e1) Bottom View 8 SOLDER BALLS 1. This drawing is for general information only. 2. Dimension ‘b’ is ...
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... Revision History AT34C02B 20 Doc. Rev. Date Comments 3417E 1/2007 Revision History Implemented Added note: Not Recommended for new design; Please refer to AT34C02C datasheet. 3417E–SEEPR–1/07 ...
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... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life ©2007 Atmel Corporation. All rights reserved. Atmel trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...