24LCS61-I/SN Microchip Technology, 24LCS61-I/SN Datasheet
24LCS61-I/SN
Specifications of 24LCS61-I/SN
Related parts for 24LCS61-I/SN
24LCS61-I/SN Summary of contents
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... Temperature ranges supported: - Industrial (I): -40°C to +85°C Description The Microchip Technology Inc. 24LCS61/ 1K/2K bit Serial EEPROM developed for applications that require many devices on the same bus but do not have the I/O pins required to address each one individually. These devices contain an 8 bit address register that is set upon power-up and allows the connection 255 devices on the same bus ...
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... ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................7.0V CC All inputs and outputs w.r.t. V ......................................................................................................... -0. Storage temperature ...............................................................................................................................-65°C to +150°C Ambient temperature with power applied ................................................................................................-65°C to +125°C ESD protection on all pins † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...
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... BUS TIMING DATA T F SCL Tsu:sta T LOW SDA STA SDA OUT 2004 Microchip Technology Inc. 24LCS61/24LCS62 Vcc = +2.5V to 5.5V Industrial (I -40°C to +85° 2.5V - 5.5V Vcc = 4.5V - 5.5V CC STD MODE FAST MODE Min. Max. Min. Max. — 100 — ...
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... PIN DESCRIPTIONS 2.1 SDA (Serial Data) This is a bidirectional pin used to transfer addresses and data into and data out of the device open drain terminal, therefore the SDA bus requires a pull-up resistor to V (typical 10 k for 100 kHz 400 kHz). ...
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... The master device must generate an extra clock pulse which is associated with this Acknowledge bit. Note: The 24LCS61/62 does not generate any Acknowledge bits if an internal program- ming cycle is in progress. FIGURE 3-2: ACKNOWLEDGE TIMING ...
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... The control byte consists of a four-bit control code, the OE bit, and three command select bits. For the 24LCS61/62, the control code is set to ‘0110’ binary for all operations. The device will not acknowledge any commands sent with any other control code. The next bit is the Output Enable (OE) bit. This bit controls the operation of the EDS pin. See Section 9.0 “ ...
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... ASSIGNING THE ID BYTE The 24LCS61/62 device contains a special register which holds an 8-bit ID byte that is used as an address to communicate with a specific device on the bus. All Read and Write commands to the device must include this ID address byte. Upon power-up, the ID byte will default to 00h ...
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... CLEAR ADDRESS COMMAND 5.3 Operation State Diagram The diagram below shows the state diagram for basic operation of the 24LCS61/62. This diagram shows possible states and operational flow once power is applied to the device. Table 5-1 summarizes operation of each command for the assigned and unassigned states ...
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... Microchip Technology Inc. 24LCS61/24LCS62 Result if Device Has Already Been Assigned an ID Byte Device will not acknowledge command. Device ID byte will revert back to 00h and will then acknowledge Assign Address commands ...
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... Acknowledge signals (Figure 6-1). 6.2 Page Write The control byte, ID byte, word address, and the first data byte are transmitted to the 24LCS61/62 in the same way byte write. But, instead of generating a Stop condition, the master transmits additional data bytes to the 24LCS61/62, which are ...
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... FIGURE 6-2: PAGE WRITE S T BUS ACTIVITY CONTROL A MASTER BYTE R T SDA LINE BUS ACTIVITY FIGURE 6-3: SET WRITE PROTECTION COMMAND CONTROL R BYTE 2004 Microchip Technology Inc. 24LCS61/24LCS62 DEVICE ADDRESS DATA BYTE 0 ID BYTE BYTE ADDRESS DEVICE BYTE ID BYTE DATA BYTE ...
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... ACKNOWLEDGE POLLING Since the device will not acknowledge during a write cycle, this can be used to determine when the cycle is complete (this feature can be used to maximize bus throughput). Once the Stop condition for a Write command has been issued from the master, the device initiates the internally timed write cycle ...
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... Stop condition in a random read. This directs the 24LCS61/62 to transmit the next discontinues sequentially addressed 8-bit word (Figure 8-3). To provide sequential reads the 24LCS61/62 contains an internal address pointer which is incremented by one at the completion of each operation ...
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... FIGURE 8-2: RANDOM READ S DEVICE CONTROL BYTE BYTE FIGURE 8-3: SEQUENTIAL READ BUS ACTIVITY ID MASTER BYTE SDA LINE BUS ACTIVITY DS21226E-page 14 S ADDRESS CONTROL T BYTE A BYTE DATA n DATA DATA DATA DEVICE S T BYTE ID BYTE DATA 2004 Microchip Technology Inc. ...
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... The External Device Select (EDS) pin is an open drain, low active output and may be used by the system designer for functions such as enabling other circuitry when the 24LCS61/62 is being accessed. Because the pin is an open drain output, a pull-up resistor is required for proper operation of this pin. When the device is powered up, the EDS pin will always be in the high- impedance state (off) ...
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... APPENDIX A: REVISION HISTORY Revision D Corrections to Section 1.0, Electrical Characteristics. Revision E Add “Obsolete Device” to document header. DS21226E-page 16 2004 Microchip Technology Inc. ...
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... Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2004 Microchip Technology Inc. 24LCS61/24LCS62 SYSTEMS INFORMATION AND UPGRADE HOT LINE The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products ...
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... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: 24LCS61/24LCS62 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 ...
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... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2004 Microchip Technology Inc. 24LCS61/24LCS62 XXX Pattern C Serial EEPROM 2 ...
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... NOTES: DS21226E-page 20 2004 Microchip Technology Inc. ...
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... PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel and Total Endurance 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. ...
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... Via Salvatore Quasimodo, 12 20025 Legnano (MI) Milan, Italy Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands Waegenburghtplein 4 NL-5152 JR, Drunen, Netherlands Tel: 31-416-690399 Fax: 31-416-690340 United Kingdom 505 Eskdale Road Winnersh Triangle Wokingham Berkshire, England RG41 5TU Tel: 44-118-921-5869 Fax: 44-118-921-5820 07/12/04 2004 Microchip Technology Inc. ...