H CAT24FC01 EE GEN FR ALO 1-kb I2C Serial EEPROM LE A D F R E ETM FEATURES ■ 1,000,000 program/erase cycles ■ 400 kHz (2.5 V) and 100 kHz (1.8 V) I2C bus compatible ■ 100 year data retention ■ 1.8 to 5.5 volt operation ■ 8-pin DIP, 8-pin SOIC, 8-pin TSSOP and MSOP ■ Low power CMOS technology packages ■ 16-byte page write buffer - “Green” package option available ■ Industrial and extended temperature ranges ■ 256 x 8 memory organization ■ Self-timed write cycle with auto-clear ■ Hardware write protect DESCRIPTION The CAT24FC01 is a 1-kb Serial CMOS EEPROM internally organized as 128 words of 8 bits each. Catalyst’s advanced CMOS technology substantially reduces device power requirements. The CAT24FC01 features a 16-byte page write buffer. The device operates via the I2C bus serial interface and is available in 8-pin DIP, 8-pin SOIC, 8-pin TSSOP and MSOP packages. PIN CONFIGURATION BLOCK DIAGRAM DIP Package (P, L) A0 A1 A2 1 2 3 8 7 6 VSS 4 5 EXTERNAL LOAD SOIC Package (J, W) VCC WP SCL SDA A0 A1 A2 1 2 3 8 7 6 VCC WP SCL VSS 4 5 SDA VCC VSS TSSOP Package (U, Y) A0 A1 A2 VSS 1 2 3 4 8 7 6 5 SENSE AMPS SHIFT REGISTERS DOUT ACK VCC WP SCL SDA WORD ADDRESS BUFFERS SDA START/STOP LOGIC WP CONTROL LOGIC XDEC COLUMN DECODERS E2PROM MSOP Package (R, Z) DATA IN STORAGE A0 A1 A2 VSS 1 2 3 4 8 7 6 5 VCC WP SCL SDA HIGH VOLTAGE/ TIMING CONTROL SCL PIN FUNCTIONS Pin Name A0 A1 A2 Function A0, A1, A2 Device Address Inputs SDA Serial Data/Address SCL Serial Clock WP Write Protect VCC 1.8 V to 5.5 V Power Supply VSS Ground © 2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice. STATE COUNTERS SLAVE ADDRESS COMPARATORS * Catalyst Semiconductor is licensed by Philips Corporation to carry the I2C Bus Protocol. 1 Doc. No. 1073, Rev. D CAT24FC01 Lead Soldering Temperature (10 seconds) ...... 300°C ABSOLUTE MAXIMUM RATINGS* Temperature Under Bias Output Short Circuit Current(2) ....................... 100 mA –55°C to +125°C Storage Temperature ....................... –65°C to +150°C *COMMENT Voltage on Any Pin with Respect to Ground(1) ............ –2.0 V to VCC + 2.0 V Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. VCC with Respect to Ground ............. –2.0 V to +7.0 V Package Power Dissipation Capability (TA = 25°C) .................................. 1.0 W RELIABILITY CHARACTERISTICS Symbol Parameter Reference Test Method Min NEND(3) TDR Typ Max Units Endurance MIL-STD-883, Test Method 1033 1,000,000 Cycles/Byte (3) Data Retention MIL-STD-883, Test Method 1008 100 Years (3) ESD Susceptibility MIL-STD-883, Test Method 3015 4000 Volts Latch-up JEDEC Standard 17 100 mA VZAP ILTH(3)(4) D.C. OPERATING CHARACTERISTICS VCC = 1.8 V to 5.5 V, unless otherwise specified. Symbol Parameter Test Conditions ICC Power Supply Current (Read) ICC Min Typ Max Units fSCL = 100 kHz 1 mA Power Supply Current (Write) fSCL = 100 kHz 3 mA ISB(5) Standby Current (VCC = 5.0 V) VIN = GND or VCC 1 µA ILI Input Leakage Current VIN = GND to VCC 1 µA ILO Output Leakage Current VOUT = GND to VCC 1 µA VIL Input Low Voltage –1 VCC x 0.3 V VIH Input High Voltage VCC x 0.7 VCC + 1.0 V VOL1 Output Low Voltage (VCC = 3.0 V) IOL = 3 mA 0.4 V VOL2 Output Low Voltage (VCC = 1.8 V) IOL = 1.5 mA 0.5 V Max Units CAPACITANCE TA = 25°C, f = 400 kHz, VCC = 5 V Symbol Test Conditions Min Typ CI/O(3) Input/Output Capacitance (SDA) VI/O = 0 V 8 pF CIN(3) Input Capacitance (other pins) VIN = 0 V 6 pF Note: (1) The minimum DC input voltage is –0.5 V. During transitions, inputs may undershoot to –2.0 V for periods of less than 20 ns. Maximum DC voltage on output pins is VCC + 0.5 V, which may overshoot to VCC + 2.0 V for periods of less than 20 ns. (2) Output shorted for no more than one second. No more than one output shorted at a time. (3) This parameter is tested initially and after a design or process change that affects the parameter. (4) Latch-up protection is provided for stresses up to 100 mA on address and data pins from –1.0 V to VCC + 1.0 V. (5) Maximum standby current (ISB) = 10µA for the Extended Automotive temperature range. Doc. No. 1073, Rev. D 2 CAT24FC01 A.C. CHARACTERISTICS VCC = 1.8 V to 5.5 V, unless otherwise specified. Read & Write Cycle Limits Symbol Parameter 1.8 V - 5.5 V 2.5 V - 5.5 V Min Max Min Max Units 0 100 0 400 kHz FSCL Clock Frequency TI(1) Noise Suppression Time Constant at SCL, SDA Inputs 100 100 ns tAA SCL Low to SDA Data Out and ACK Out 3.5 0.9 µs tBUF(1) Time the Bus Must be Free Before a New Transmission Can Start tHD:STA Start Condition Hold Time tLOW 4.7 1.3 µs 4 0.6 µs Clock Low Period 4.7 1.3 µs tHIGH Clock High Period 4 0.6 µs tSU:STA Start Condition Setup Time (for a Repeated Start Condition) 4.7 0.6 µs tHD:DAT Data In Hold Time 0 0 ns tSU:DAT Data In Setup Time 250 100 ns tR(1) SDA and SCL Rise Time 1 0.3 µs SDA and SCL Fall Time 300 300 ns tF (1) tSU:STO Stop Condition Setup Time tDH Data Out Hold Time 4 0.6 µs 100 100 ns Power-Up Timing(1)(2) Symbol Parameter tPUR tPUW Min Typ Max Units Power-up to Read Operation 1 ms Power-up to Write Operation 1 ms Max Units 5 ms Write Cycle Limits Symbol Parameter tWR Write Cycle Time Min Typ interface circuits are disabled, SDA is allowed to remain high, and the device does not respond to its slave address. The write cycle time is the time from a valid stop condition of a write sequence to the end of the internal program/erase cycle. During the write cycle, the bus Note: (1) This parameter is tested initially and after a design or process change that affects the parameter. (2) tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated. 3 Doc No. 1073, Rev. D CAT24FC01 FUNCTIONAL DESCRIPTION SDA: Serial Data/Address The CAT24FC01 bidirectional serial data/address pin is used to transfer data into and out of the device. The SDA pin is an open drain output and can be wire-ORed with other open drain or open collector outputs. The CAT24FC01 supports the I2C Bus data transmission protocol. This Inter-Integrated Circuit Bus protocol defines any device that sends data to the bus to be a transmitter and any device receiving data to be a receiver. Data transfer is controlled by the Master device which generates the serial clock and all START and STOP conditions for bus access. The CAT24FC01 operates as a Slave device. Both the Master and Slave devices can operate as either transmitter or receiver, but the Master device controls which mode is activated. A maximum of 8 devices may be connected to the bus as determined by the device address inputs A0, A1, and A2. A0, A1, A2: Device Address Inputs These inputs set device address when cascading multiple devices. A maximum of eight devices can be cascaded when using the device. WP: Write Protect This input, when tied to GND, allows write operations to the entire memory. For CAT24FC01 when this pin is tied to VCC, the entire array of memory is write protected. When left floating, memory is unprotected. PIN DESCRIPTIONS SCL: Serial Clock The CAT24FC01 serial clock input pin is used to clock all data transfers into or out of the device. This is an input pin. Figure 1. Bus Timing tF tHIGH tLOW tR tLOW SCL tSU:STA tHD:STA tHD:DAT tSU:DAT tSU:STO SDA IN tAA tBUF tDH SDA OUT Figure 2. Write Cycle Timing SCL SDA 8TH BIT ACK BYTE n tWR STOP CONDITION START CONDITION Figure 3. Start/Stop Timing SDA SCL START BIT Doc. No. 1073, Rev. D STOP BIT 4 ADDRESS CAT24FC01 I2C BUS PROTOCOL and define which device the Master is accessing. Up to eight CAT24FC01 may be individually addressed by the system. The last bit of the slave address specifies whether a Read or Write operation is to be performed. When this bit is set to 1, a Read operation is selected, and when set to 0, a Write operation is selected. The following defines the features of the I2C bus protocol: (1) Data transfer may be initiated only when the bus is not busy. After the Master sends a START condition and the slave address byte, the CAT24FC01 monitors the bus and responds with an acknowledge (on the SDA line) when its address matches the transmitted slave address. The CAT24FC01 then performs a Read or a Write operation depending on the state of the R/W bit. (2) During a data transfer, the data line must remain stable whenever the clock line is high. Any changes in the data line while the clock line is high will be interpreted as a START or STOP condition. START Condition The START Condition precedes all commands to the device, and is defined as a HIGH to LOW transition of SDA when SCL is HIGH. The CAT24FC01 monitors the SDA and SCL lines and will not respond until this condition is met. Acknowledge After a successful data transfer, each receiving device is required to generate an acknowledge. The Acknowledging device pulls down the SDA line during the ninth clock cycle, signaling that it received the 8 bits of data. STOP Condition The CAT24FC01 responds with an acknowledge after receiving a START condition and its slave address. If the device has been selected along with a write operation, it responds with an acknowledge after receiving each byte. A LOW to HIGH transition of SDA when SCL is HIGH determines the STOP condition. All operations must end with a STOP condition. DEVICE ADDRESSING When the CAT24FC01 begins a READ mode, it transmits 8 bits of data, releases the SDA line, and monitors the line for an acknowledge. Once it receives this acknowledge, the CAT24FC01 will continue to transmit data. If no acknowledge is sent by the Master, the device terminates data transmission and waits for a STOP condition. The Master begins a transmission by sending a START condition. The Master then sends the address of the particular slave device it is requesting. The four most significant bits of the 8-bit slave address are fixed as 1010 for the CAT24FC01 (see Fig. 5). The next three significant bits (A2, A1, A0) are the device address bits Figure 4. Acknowledge Timing SCL FROM MASTER 1 8 9 DATA OUTPUT FROM TRANSMITTER DATA OUTPUT FROM RECEIVER ACKNOWLEDGE START Figure 5. Slave Address Bits 1 0 1 0 A2 A1 A0 R/W Normal Read and Write DEVICE ADDRESS 5 Doc No. 1073, Rev. D CAT24FC01 Once all 16 bytes are received and the STOP condition has been sent by the Master, the internal programming cycle begins. At this point all received data is written to the CAT24FC01 in a single write cycle. WRITE OPERATIONS Byte Write In the Byte Write mode, the Master device sends the START condition and the slave address information (with the R/W bit set to zero) to the Slave device. After the Slave generates an acknowledge, the Master sends the byte address that is to be written into the address pointer of the CAT24FC01. After receiving another acknowledge from the Slave, the Master device transmits the data byte to be written into the addressed memory location. The CAT24FC01 acknowledges once more and the Master generates the STOP condition, at which time the device begins its internal programming to nonvolatile memory. While this internal cycle is in progress, the device will not respond to any request from the Master device. Acknowledge Polling The disabling of the inputs can be used to take advantage of the typical write cycle time. Once the stop condition is issued to indicate the end of the host’s write operation, the CAT24FC01 initiates the internal write cycle. ACK polling can be initiated immediately. This involves issuing the start condition followed by the slave address for a write operation. If the CAT24FC01 is still busy with the write operation, no ACK will be returned. If the CAT24FC01 has completed the write operation, an ACK will be returned and the host can then proceed with the next read or write operation. Page Write WRITE PROTECTION The CAT24FC01 writes up to 16 bytes of data in a single write cycle, using the Page Write operation. The Page Write operation is initiated in the same manner as the Byte Write operation, however instead of terminating after the initial word is transmitted, the Master is allowed to send up to 15 additional bytes. After each byte has been transmitted the CAT24FC01 will respond with an acknowledge, and internally increment the low order address bits by one. The high order bits remain unchanged. The CAT24FC01 is designed with a hardware protect pin that enables the user to protect the entire memory. Thehardware protection feature of the CAT24FC01 is designed into the part to provide added flexibility to the design engineers. The write protection feature of CAT24FC01 allows the user to protect against inadvertent programming of the memory array. If the WP pin is tied to Vcc, the entire memory array is protected and becomes read only. The entire memory becomes write protected regardless of whether the write protect register has been written or not. When WP pin is tied to Vcc, the user cannot program the write protect register. If the WP pin is left floating or tied to Vss, the device can be written into. If the Master transmits more than 16 bytes prior to sending the STOP condition, the address counter ‘wraps around’, and previously transmitted data will be overwritten. Figure 6. Byte Write Timing BUS ACTIVITY: MASTER SDA LINE S T A R T SLAVE ADDRESS BYTE ADDRESS S T O P DATA S P A C K A C K A C K Figure 7. Page Write Timing BUS ACTIVITY: MASTER SDA LINE S T A R T SLAVE ADDRESS BYTE ADDRESS (n) DATA n DATA n+1 DATA n+7 S P A C K A C K A C K NOTE: IN THIS EXAMPLE n = XXXX 0000(B); X = 1 or 0 Doc. No. 1073, Rev. D S T O P 6 A C K A C K CAT24FC01 Read Operations The READ operation for the CAT24FC01 is initiated in the same manner as the write operation with the one exception that the R/W bit is set to a one. Three different READ operations are possible: Immediate Address READ, Selective READ and Sequential READ. read. After the CAT24FC01 acknowledge the word address, the Master device resends the START condition and the slave address, this time with the R/W bit set to one. The CAT24FC01 then responds with its acknowledge and sends the 8-bit byte requested. The master device does not send an acknowledge but will generate a STOP condition. Immediate Address Read Sequential Read The CAT24FC01’s address counter contains the address of the last byte accessed, incremented by one. In other words, if the last READ or WRITE access was to address N, the READ immediately following would access data from address N + 1. If N = 217, the counter will not ‘wrap around’. After the CAT24FC01 receives its slave address information (with the R/W bit set to one), it issues an acknowledge, then transmits the 8-bit byte requested. The master device does not send an acknowledge but will generate a STOP condition. The Sequential READ operation can be initiated by either the Immediate Address READ or Selective READ operations. After the CAT24FC01 sends the initial 8-bit data requested, the Master will respond with an acknowledge which tells the device it requires more data. The CAT24FC01 will continue to output a byte for each acknowledge sent by the Master. The operation will terminate operation when the Master fails to respond with an acknowledge, thus sending the STOP condition. The data being transmitted from the CAT24FC01 is outputted sequentially with data from address N followed by data from address N + 1. The READ operation address counter increments all of the CAT24FC01 address bits so that the entire memory array can be read during one operation. Selective Read Selective READ operations allow the Master device to select at random any memory location for a READ operation. The Master device first performs a ‘dummy’ write operation by sending the START condition, slave address and byte address of the location it wishes to Figure 8. Immediate Address Read Timing BUS ACTIVITY: MASTER SDA LINE S T A R T S T O P SLAVE ADDRESS S P A C K DATA N O A C K SCL SDA 8 9 8TH BIT DATA OUT NO ACK 7 STOP Doc No. 1073, Rev. D CAT24FC01 Figure 9. Selective Read Timing BUS ACTIVITY: MASTER SDA LINE S T A R T SLAVE ADDRESS S T A R T BYTE ADDRESS (n) S T O P SLAVE ADDRESS S S A C K P A C K A C K DATA n N O A C K Figure 10. Sequential Read Timing BUS ACTIVITY: MASTER SLAVE ADDRESS DATA n DATA n+1 DATA n+2 S T O P DATA n+x SDA LINE P A C K A C K A C K A C K N O A C K Doc. No. 1073, Rev. D 8 CAT24FC01 ORDERING INFORMATION Prefix CAT Optional Company ID Device # 24FC01 Product Number Suffix J I Temperature Range I = Industri E = Extended (-40°C to +125°C) TE13 REV-F Tape & Reel TE13: 2000/Reel Die Revision Package P: PDIP J: SOIC (JEDEC) R: MSOP U: TSSOP L: PDIP (Lead free, Halogen free) W: SOIC (JEDEC), (Lead free, Halogen free) Y: TSSOP (Lead free, Halogen free) Z: MSOP (Lead free, Halogen free) Notes: (1) The device used in the above example is a 24FC01JI-TE13 (SOIC, Industrial Temperature, 1.8 Volt to 5.5 Volt Operating Voltage, Tape & Reel) 9 Doc No. 1073, Rev. D REVISION HISTORY Date Revision Comments 03/01/04 A Initial Issue 05/15/04 B Updated D.C. Operating Characteristics Updated Write Cycle Limits Updated Ordering Information Updated Revision History Updated Rev Number 06/07/04 C Updated Write Cycle Limits 07/27/04 D Updated table notes on page 2 Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ DPPs ™ AE2 ™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For a complete list of patents issued to Catalyst Semiconductor contact the Company’s corporate office at 408.542.1000. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete. Catalyst Semiconductor, Inc. Corporate Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com Publication #: Revison: Issue date: 1073 D 7/27/04