CAT25320YI-GT3

CAT25320 32-Kb SPI Serial CMOS EEPROM FEATURES 10 MHz SPI compatible 1.8V to 5.5V supply voltage range SPI modes (0,0) & (1,1) 32-byte page write buffer Self-timed write cycle Hardware and software protection Block write protection – Protect 1/4, 1/2 or entire EEPROM array Low power CMOS technology 1,000,000 program/erase cycles 100 year data retention Industrial temperature range RoHS-compliant 8 lead PDIP, SOIC, TSSOP and 8-pad TDFN packages DESCRIPTION The CAT25320 is a 32-Kb Serial CMOS EEPROM device internally organized as 4096x8 bits. This features a 32-byte page write buffer and supports the Serial Peripheral Interface (SPI) protocol. The device ¯¯ is enabled through a Chip Select (CS) input. In addition, the required bus signals are clock input (SCK), data input (SI) and data output (SO) lines. The ¯¯¯¯¯ HOLD input may be used to pause any serial communication with the CAT25320 device. The device features software and hardware write protec– tion, including partial as well as full array protection. PIN CONFIGURATION PDIP (L) SOIC (V) TSSOP (Y) TDFN (VP2) ¯¯ CS SO ¯¯¯ WP VSS 1 2 3 4 8 VCC ¯¯¯¯¯ 7 HOLD 6 SCK 5 SI FUNCTIONAL SYMBOL VCC SI CS WP HOLD SCK CAT25320 SO PIN FUNCTION Pin Name ¯¯ CS SO ¯¯¯ WP VSS SI SCK ¯¯¯¯¯ HOLD VCC Function Chip Select Serial Data Output Write Protect Ground Serial Data Input Serial Clock Hold Transmission Input Power Supply VSS For Ordering Information details, see page 15. © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice 1 Doc. No. 1111 Rev. E CAT25320 ABSOLUTE MAXIMUM RATINGS(1) Parameters Storage Temperature Voltage on any Pin with Respect to Ground RELIABILITY CHARACTERISTICS(3) Symbol NEND(4) TDR Parameter Endurance Data Retention Min 1,000,000 100 Units Program/ Erase Cycles Years (2) Ratings –65 to +150 –0.5 to VCC + 0.5 Units ºC V D.C. OPERATING CHARACTERISTICS VCC = +1.8V to +5.5V, TA=-40°C to +85°C unless otherwise specified. Symbol Parameter ICC Supply Current ISB1 ISB2 IL ILO VIL VIH VOL1 VOH1 VOL2 VOH2 Standby Current Standby Current Input Leakage Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage Output Low Voltage Output High Voltage VCC ≥ 2.5V, IOL = 3.0mA VCC ≥ 2.5V, IOH = -1.6mA VCC < 2.5V, IOL = 150µA VCC < 2.5V, IOH = -100µA VCC - 0.2V VCC - 0.8V 0.2 Test Conditions Read, Write, VCC = 5.0V, fSCK = 10MHz, SO open ¯¯ WP VIN = GND or VCC , CS = VCC , ¯¯¯ = VCC, VCC = 5.0V ¯¯ WP VIN = GND or VCC , CS = VCC , ¯¯¯ = GND, VCC = 5.0V VIN = GND or VCC -2 -1 -0.5 0.7VCC Min Max 2 2 4 2 1 0.3VCC VCC + 0.5 0.4 Units mA µA µA µA µA V V V V V V ¯¯ Output Leakage Current CS = VCC , VOUT = GND or VCC PIN CAPACITANCE(3) TA = 25˚C, f = 1.0MHz, VCC = +5.0V Symbol COUT CIN Test Output Capacitance (SO) ¯¯ Input Capacitance (CS, SCK, SI, ¯¯¯, HOLD WP ¯¯¯¯¯) Conditions VOUT = 0V VIN = 0V Min Typ Max 8 8 Units pF pF Notes: (1) 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. (2) The DC input voltage on any pin should not be lower than -0.5V or higher than VCC + 0.5V. During transitions, the voltage on any pin may undershoot to no less than -1.5V or overshoot to no more than VCC + 1.5V, for periods of less than 20ns. (3) These parameters are tested initially and after a design or process change that affects the parameter according to appropriate AEC-Q100 and JEDEC test methods. (4) Page Mode, VCC = 5V, 25°C Doc. No. 1111 Rev. E 2 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT25320 A.C. CHARACTERISTICS TA = -40°C to +85°C, unless otherwise specified.(1) VCC = 1.8V-5.5V Symbol fSCK tSU tH tWH tWL tLZ tRI(2) tFI(2) tHD tCD tV tHO tDIS tHZ tCS tCSS tCSH tWPS tWPH tWC(4) Parameter Clock Frequency Data Setup Time Data Hold Time SCK High Time SCK Low Time ¯¯¯¯¯ HOLD to Output Low Z Input Rise Time Input Fall Time ¯¯¯¯¯ HOLD Setup Time ¯¯¯¯¯ HOLD Hold Time Output Valid from Clock Low Output Hold Time Output Disable Time ¯¯¯¯¯ HOLD to Output High Z ¯¯ CS High Time ¯¯ CS Setup Time ¯¯ CS Hold Time ¯¯¯ Setup Time WP ¯¯¯ Hold Time WP Write Cycle Time 50 50 50 10 10 5 0 50 100 15 15 15 10 10 5 0 10 75 0 20 25 Min. DC 30 30 75 75 50 2 2 0 10 40 Max. 5 VCC = 2.5V-5.5V Min. DC 20 20 40 40 25 2 2 Max. 10 Units MHz ns ns ns ns ns µs µs ns ns ns ns ns ns ns ns ns ns ns ms Power-Up Timing(2)(3) Symbol tPUR tPUW Notes: (1) AC Test Conditions: Input Pulse Voltages: 0.3VCC to 0.7VCC Input rise and fall times: ≤ 10ns Input and output reference voltages: 0.5VCC Output load: current source IOL max/IOH max; CL = 50pF (2) This parameter is tested initially and after a design or process change that affects the parameter. (3) tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated. ¯¯ (4) tWC is the time from the rising edge of CS after a valid write sequence to the end of the internal write cycle. Parameter Power-up to Read Operation Power-up to Write Operation Max. 1 1 Units ms ms © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3 Doc. No. 1111 Rev. E CAT25320 PIN DESCRIPTION SI: The serial data input pin accepts op-codes, addresses and data. In SPI modes (0,0) and (1,1) input data is latched on the rising edge of the SCK clock input. SO: The serial data output pin is used to transfer data out of the device. In SPI modes (0,0) and (1,1) data is shifted out on the falling edge of the SCK clock. SCK: The serial clock input pin accepts the clock provided by the host and used for synchronizing communication between host and CAT25320. ¯¯ CS: The chip select input pin is used to ¯¯ enable/disable the CAT25320. When CS is high, the SO output is tri-stated (high impedance) and the device is in Standby Mode (unless an internal write operation is in progress). Every communication session between host and CAT25320 must be preceded by a high to low transition and concluded ¯¯ with a low to high transition of the CS input. ¯¯¯: The write protect input pin will allow all write WP operations to the device when held high. When ¯¯¯ WP pin is tied low and the WPEN bit in the Status Register (refer to Status Register description, later in this Data Sheet) is set to “1”, writing to the Status Register is disabled. ¯¯¯¯¯: ¯¯¯¯¯ HOLD The HOLD input pin is used to pause trans– mission between host and CAT25320, without having to retransmit the entire sequence at a later ¯¯¯¯¯ time. To pause, HOLD must be taken low and to resume it must be taken back high, with the SCK input low during both transitions. When not used for pausing, the ¯¯¯¯¯ input should be tied to VCC, HOLD either directly or through a resistor. Figure 1. Synchronous Data Timing V IH tCS FUNCTIONAL DESCRIPTION The CAT25320 device supports the Serial Peripheral Interface (SPI) bus protocol, modes (0,0) and (1,1). The device contains an 8-bit instruction register. The instruction set and associated op-codes are listed in Table 1. Reading data stored in the CAT25320 is accomplished by simply providing the READ command and an address. Writing to the CAT25320, in addition to a WRITE command, address and data, also requires enabling the device for writing by first setting certain bits in a Status Register, as will be explained later. ¯¯ After a high to low transition on the CS input pin, the CAT25320 will accept any one of the six instruction opcodes listed in Table 1 and will ignore all other possible 8-bit combinations. The communication protocol follows the timing from Figure 1. Table 1: Instruction Set Instruction WREN WRDI RDSR WRSR READ WRITE Opcode 0000 0110 0000 0100 0000 0101 0000 0001 0000 0011 0000 0010 Operation Enable Write Operations Disable Write Operations Read Status Register Write Status Register Read Data from Memory Write Data to Memory CS VIL VIH VIL VIH tSU tCSS tCSH SCK tWH tH tWL SI VALID IN tRI tFI VIL tV tHO tDIS HI-Z SO VOH VOL HI-Z Note: Dashed Line = mode (1, 1) - - - - - Doc. No. 1111 Rev. E 4 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT25320 STATUS REGISTER The Status Register, as shown in Table 2, contains a number of status and control bits. The ¯¯¯¯ (Ready) bit indicates whether the device is RDY busy with a write operation. This bit is automatically set to 1 during an internal write cycle, and reset to 0 when the device is ready to accept commands. For the host, this bit is read only. The WEL (Write Enable Latch) bit is set/reset by the WREN/WRDI commands. When set to 1, the device is in a Write Enable state and when set to 0, the device is in a Write Disable state. The BP0 and BP1 (Block Protect) bits determine which blocks are currently write protected. They are set by the user with the WRSR command and are Table 2. Status Register 7 WPEN 6 0 5 0 4 0 3 BP1 2 BP0 1 WEL 0 ¯¯¯¯ RDY non-volatile. The user is allowed to protect a quarter, one half or the entire memory, by setting these bits according to Table 3. The protected blocks then become read-only. The WPEN (Write Protect Enable) bit acts as an enable for the ¯¯¯ pin. Hardware write protection is WP enabled when the ¯¯¯ pin is low and the WPEN bit WP is 1. This condition prevents writing to the status register and to the block protected sections of memory. While hardware write protection is active, only the non-block protected memory can be written. Hardware write protection is disabled when the ¯¯¯ WP pin is high or the WPEN bit is 0. The WPEN bit, ¯¯¯ WP pin and WEL bit combine to either permit or inhibit Write operations, as detailed in Table 4. Table 3. Block Protection Bits Status Register Bits BP1 0 0 1 1 BP0 0 1 0 1 Array Address Protected None 0C00-0FFF 0800-0FFF 0000-0FFF Protection No Protection Quarter Array Protection Half Array Protection Full Array Protection Table 4. Write Protect Conditions WPEN 0 0 1 1 X X ¯¯¯ WP X X Low Low High High WEL 0 1 0 1 0 1 Protected Blocks Protected Protected Protected Protected Protected Protected Unprotected Blocks Protected Writable Protected Writable Protected Writable Status Register Protected Writable Protected Protected Protected Writable © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice 5 Doc. No. 1111 Rev. E CAT25320 WRITE OPERATIONS The CAT25320 device powers up into a write disable state. The device contains a Write Enable Latch (WEL) which must be set before attempting to write to the memory array or to the status register. In addition, the address of the memory location(s) to be written must be outside the protected area, as defined by BP0 and BP1 bits from the status register. Write Enable and Write Disable The internal Write Enable Latch and the correspon– ding Status Register WEL bit are set by sending the WREN instruction to the CAT25320. Care must be ¯¯ taken to take the CS input high after the WREN instruction, as otherwise the Write Enable Latch will not be properly set. WREN timing is illustrated in Figure 2. The WREN instruction must be sent prior any WRITE or WRSR instruction. The internal write enable latch is reset by sending the WRDI instruction as shown in Figure 3. Disabling write operations by resetting the WEL bit, will protect the device against inadvertent writes. Figure 2. WREN Timing CS SCK SI 0 0 0 0 0 1 1 0 SO HIGH IMPEDANCE Note: Dashed Line = mode (1, 1) - - - - - - Figure 3. WRDI Timing CS SCK SI 0 0 0 0 0 1 0 0 SO HIGH IMPEDANCE Note: Dashed Line = mode (1, 1) - - - - - - Doc. No. 1111 Rev. E 6 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT25320 Byte Write Once the WEL bit is set, the user may execute a write sequence, by sending a WRITE instruction, a 16-bit address and data as shown in Figure 4. Only 12 significant address bits are used by the CAT25320. The rest are don’t care bits, as shown in Table 5. ¯¯ Internal programming will start after the low to high CS transition. During an internal write cycle, all commands, except for RDSR (Read Status Register) will be ignored. The ¯¯¯¯ bit will indicate if the internal RDY ¯¯¯¯ write cycle is in progress (RDY high), or the the ¯¯¯¯ device is ready to accept commands (RDY low). Page Write After sending the first data byte to the CAT25320, the host may continue sending data, up to a total of 32 bytes, according to timing shown in Figure 5. After each data byte, the lower order address bits are automatically incremented, while the higher order address bits (page address) remain unchanged. If during this process the end of page is exceeded, then loading will “roll over” to the first byte in the page, thus possibly overwriting previoualy loaded data. Following completion of the write cycle, the CAT25320 is automatically returned to the write disable state. Table 5. Byte Address Device CAT25320 Address Significant Bits A11 - A0 Address Don't Care Bits A15 - A12 # Address Clock Pulses 16 Figure 4. Byte WRITE Timing CS 0 SCK OPCODE 1 2 3 4 5 6 7 8 21 22 23 24 25 26 27 28 29 30 31 BYTE ADDRESS* 1 0 AN DATA IN SI 0 0 0 0 0 0 A0 D7 D6 D5 D4 D3 D2 D1 D0 SO HIGH IMPEDANCE * Please check the Byte Address Table (Table 5) Note: Dashed Line = mode (1, 1) - - - - - - Figure 5. Page WRITE Timing CS 0 SCK OPCODE 1 2 3 4 5 6 7 8 21 22 23 24-31 32-39 24+(N-1)x8-1..24+(N-1)x8 24+Nx8-1 BYTE ADDRESS* 0 1 0 AN A0 Data Byte 1 DATA IN Data Byte 2 Data Byte 3 Data Byte N 0 7..1 SI 0 0 0 0 0 SO *Please check the Byte Address Table. (Table 5) HIGH IMPEDANCE Note: Dashed Line = mode (1, 1) - - - - - - © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice 7 Doc. No. 1111 Rev. E CAT25320 Write Status Register The Status Register is written by sending a WRSR instruction according to timing shown in Figure 6. Only bits 2, 3 and 7 can be written using the WRSR command. Write Protection ¯¯¯) The Write Protect (WP pin can be used to protect the Block Protect bits BP0 and BP1 against being inadvertently altered. When ¯¯¯ is low and the WPEN WP bit is set to “1”, write operations to the Status Register ¯¯ are inhibited. ¯¯¯ going low while CS is still low will WP interrupt a write to the status register. If the internal write cycle has already been initiated, ¯¯¯ going low WP will have no effect on any write operation to the Status Register. The ¯¯¯ pin function is blocked when the WP WPEN bit is set to “0”. The ¯¯¯ input timing is shown WP in Figure 7. Figure 6. WRSR Timing CS 0 SCK OPCODE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DATA IN SI 0 0 0 0 0 0 0 1 7 MSB 6 5 4 3 2 1 0 SO HIGH IMPEDANCE Note: Dashed Line = mode (1, 1) - - - - - - Figure 7. ¯¯¯ Timing WP t WP S t WPH CS SCK WP WP Note: Dashed Line = mode (1, 1) - - - - - - Doc. No. 1111 Rev. E 8 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT25320 READ OPERATIONS Read from Memory Array To read from memory, the host sends a READ instruction followed by a 16-bit address (see Table 5 for the number of significant address bits). After receiving the last address bit, the CAT25320 will respond by shifting out data on the SO pin (as shown in Figure 8). Sequentially stored data can be read out by simply continuing to run the clock. The internal address pointer is automatically incremented to the next higher address as data is shifted out. After reaching the highest memory address, the address counter “rolls over” to the lowest memory address, and the read cycle can be continued indefinitely. The ¯¯ read operation is terminated by taking CS high. Read Status Register To read the status register, the host simply sends a RDSR command. After receiving the last bit of the command, the CAT25320 will shift out the contents of the status register on the SO pin (Figure 9). The status register may be read at any time, including during an internal write cycle. Figure 8. READ Timing CS 0 SCK OPCODE 1 2 3 4 5 6 7 8 9 10 20 21 22 23 24 25 26 27 28 29 30 BYTE ADDRESS* 0 1 1 AN A0 DATA OUT SI 0 0 0 0 0 SO HIGH IMPEDANCE 7 MSB 6 5 4 3 2 1 0 * Please check the Byte Address Table (Table 5). Note: Dashed Line = mode (1, 1) - - - - - - Figure 9. RDSR Timing CS 0 SCK OPCODE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SI 0 0 0 0 0 1 0 1 DATA OUT SO HIGH IMPEDANCE 7 MSB 6 5 4 3 2 1 0 Note: Dashed Line = mode (1, 1) - - - - - - © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice 9 Doc. No. 1111 Rev. E CAT25320 Hold Operation The ¯¯¯¯¯ input can be used to pause communication HOLD between host and CAT25320. To pause, ¯¯¯¯¯ must HOLD be taken low while SCK is low (Figure 10). During the ¯¯ hold condition the device must remain selected (CS low). During the pause, the data output pin (SO) is tristated (high impedance) and SI transitions are ¯¯¯¯¯ ignored. To resume communication, HOLD must be taken high while SCK is low. The CAT25320 device powers up in a write disable state and in a low power standby mode. A WREN instruction must be issued prior any writes to the device. After power up, the CS pin must be brought low to enter a ready state and receive an instruction. After a successful byte/page write or status register write, the device goes into a write disable mode. The CS input must be set high after the proper number of clock cycles to start the internal write cycle. Access to the memory array during an internal write cycle is ignored and programming is continued. Any invalid op-code will be ignored and the serial output pin (SO) will remain in the high impedance state. DESIGN CONSIDERATIONS The CAT25320 device incorporates Power-On Reset (POR) circuitry which protects the internal logic against powering up in the wrong state. The device will power up into Standby mode after VCC exceeds the POR trigger level and will power down into Reset mode when VCC drops below the POR trigger level. This bi-directional POR behavior protects the device against ‘brown-out’ failure following a temporary loss of power. ¯¯¯¯¯ Figure 10. HOLD Timing CS tCD SCK tHD HOLD tHZ SO tHD tCD HIGH IMPEDANCE tLZ Note: Dashed Line = mode (1, 1) - - - - - - Doc. No. 1111 Rev. E 10 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT25320 PACKAGE OUTLINES 8-LEAD 300MIL PLASTIC DIP (L) SYMBOL A A1 A2 b b2 c D E e E1 eB L MIN 0.38 3.18 0.36 1.14 0.20 9.53 7.62 6.22 7.87 3.05 NOM MAX 5.33 3.35 0.46 1.52 0.25 9.65 7.87 2.54 BSC 6.35 3.43 0.56 1.78 0.36 9.78 8.25 6.48 9.40 3.80 Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MS-001. © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. 11 Doc. No. 1111 Rev. E CAT25320 8-LEAD 150 MIL SOIC (V) E1 E D A q1 e b A1 h x 45 C L SYMBOL A1 A b C D E E1 e h L q1 MIN 0.10 1.35 0.33 0.19 4.80 5.80 3.80 NOM MAX 0.25 1.75 0.51 0.25 5.00 6.20 4.00 1.27 BSC 0.25 0.40 0° 0.50 1.27 8° For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) (2) All dimensions are in millimeters. Complies with JEDEC specification MS-012. 12 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice Doc. No. 1111 Rev. E CAT25320 8-LEAD TSSOP (Y) D 8 5 SEE DETAIL A c E E1 E/2 1 4 GAGE PLANE PIN #1 IDENT. 0.25 q1 A2 L SEATING PLANE SEE DETAIL A A e b A1 SYMBOL A A1 A2 b c D E E1 e L q1 MIN 0.05 0.80 0.19 0.09 2.90 6.30 4.30 0.50 0.00 NOM MAX 1.20 0.15 1.05 0.30 0.20 3.10 6.50 4.50 0.75 8.00 0.90 3.00 6.4 4.40 0.65 BSC 0.60 For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) (2) All dimensions are in millimeters. Complies with JEDEC Standard MO-153 13 Doc. No. 1111 Rev. E © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT25320 8-PAD TDFN (2 x 3mm) PACKAGE (VP2) A E PIN 1 INDEX AREA D A1 A2 A3 D2 SYMBOL A A1 A2 A3 b D D2 E E2 e L MIN 0.70 0.00 0.45 0.20 1.90 1.30 2.90 1.20 0.20 NOM 0.75 0.02 0.55 0.20 REF 0.25 2.00 1.40 3.00 1.30 0.50 TYP 0.30 MAX 0.80 0.05 0.65 0.30 2.10 1.50 3.10 1.40 0.40 b e 3xe E2 PIN 1 ID L For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) (2) All dimensions are in millimeters. Complies with JEDEC specification MO-229. Doc. No. 1111 Rev. E 14 © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT25320 ORDERING INFORMATION Prefix CAT Company ID Product Number L: V: Y: VP2: Device # Suffix 25320 V Package PDIP SOIC, JEDEC TSSOP TDFN (2 x 3mm) I Temperature Range I = Industrial (-40ºC to 85ºC) -G Lead Finish Blank: Matte-Tin G: NiPdAu T3 25320 Tape & Reel T: Tape & Reel 3: 3000 units/Reel Notes: (1) (2) (3) (4) All packages are RoHS-compliant (Lead-free, Halogen-free). The standard lead finish is NiPdAu. The device used in the above example is a CAT25320VI-GT3 (SOIC, Industrial Temperature, NiPdAu, Tape & Reel). For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. © 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice 15 Doc. No. 1111 Rev. E REVISION HISTORY Date 12/20/05 03/21/06 Rev. A B Comments Initial Issue Update D.C. Operating Characteristics Update A.C. Characteristics Update Pin Description Update Features Add Ordering Information Table Update D.C. Operating Characteristics Update A.C. Characteristics Update Pin Description Udate Ordering Information Update Package Marking Remove Tape and Reel Change 64-Byte page write buffer to 32-Byte page write buffer Update Status Register format Add TDFN (VP2) Package Remove package marking Change text format 05/17/06 C 07/25/06 02/15/07 D E Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Beyond Memory™, DPP™, EZDim™, MiniPot™, and Quad-Mode™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. 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 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 1Hwww.catsemi.com Document No: 1111 Revision: E Issue date: 02/15/07