X4005 XICOR [Xicor Inc.], X4005 Datasheet
X4005
Available stocks
Related parts for X4005
X4005 Summary of contents
Page 1
... Reset & Watchdog Timebase Power on and Low Voltage + Reset Generation - V TRIP www.xicor.com detection circuitry protects the CC falls below the minimum V CC returns to CC thresholds are available; however, Xicor’s RESET (X4003) RESET (X4005) Characteristics subject to change without notice. trip ...
Page 2
... X4003/X4005 PIN CONFIGURATION 8-Pin JEDEC SOIC, MSOP RESET PIN DESCRIPTION Pin Pin Pin (SOIC/DIP) TSSOP (MSOP REV 1.1.3 4/30/ SCL SDA Name NC No internal connections NC No internal connections ...
Page 3
... X4003/X4005 PRINCIPLES OF OPERATION Power On Reset Application of power to the X4003/X4005 activates a power on reset circuit that pulls the RESET/RESET pin active. This signal provides several benefits. – It prevents the system microprocessor from starting to operate with insufficient voltage. – It prevents the processor from operating prior to stabilization of the oscillator. – ...
Page 4
... X4003/X4005 To set the new V voltage, apply the desired V TRIP threshold voltage to the V pin and tie the WP pin to CC the programming voltage V . Then write data 00hto P address 01h. The stop bit following a valid write operation initiates the V programing sequence. Bring WP TRIP LOW to complete the operation. ...
Page 5
... See "Writing to the Control Register" below. The user must issue a stop after sending the control byte to the register to initiate the nonvolatile cycle that stores WD1 and WD0. The X4003/X4005 will not acknowledge any data bytes written after the first byte is entered. www.xicor.com ...
Page 6
... The state of the control register can be read at any time by performing a serial read operation. Only one byte is read by each register read operation. The X4003/X4005 resets itself after the first byte is read. The master should supply a stop condition to be con- sistent with the bus protocol, but a stop is not required to end this operation ...
Page 7
... X4003/X4005 Figure 5. Valid Data Changes on the SDA Bus SCL SDA Serial Start Condition All commands are preceded by the start condition, which is a HIGH to LOW transition of SDA when SCL is HIGH. The device continuously monitors the SDA and SCL lines for the start condition and will not respond to any command until this condition has been met ...
Page 8
... X4003/X4005 Figure 7. Acknowledge Response From Receiver SCL from Master Data Output from Transmitter Data Output from Receiver Start SERIAL WRITE OPERATIONS Slave Address Byte Following a start condition, the master must output a slave address byte. This byte consists of several parts: – a device type identifier that is always ‘1011’. ...
Page 9
... X4003/X4005 Serial Read Operations The read operation allows the master to access the control 2 register. To conform to the I C standard, prior to issuing the slave address byte with the R/W bit set to one, the master must first perform a “dummy” write operation. The master issues the start condition and the slave address byte, receives an acknowledge, then issues the byte address ...
Page 10
... X4003/X4005 ABSOLUTE MAXIMUM RATINGS Temperature under bias ................... -65°C to +135°C Storage temperature ........................ -65°C to +150°C Voltage on any pin with respect to V .......................................-1.0V to +7V SS D.C. output current ............................................... 5mA Lead temperature (soldering, 10 seconds).........300°C RECOMMENDED OPERATING CONDITIONS Temperature Min. Commercial 0°C Industrial -40°C D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.) ...
Page 11
... X4003/X4005 CAPACITANCE (T = 25° 1.0 MHz Symbol (4) C Output capacitance (SDA, RESET/RESET) OUT (4) C Input capacitance (SCL, WP) IN Note: (4) This parameter is periodically sampled and not 100% tested. EQUIVALENT A.C. LOAD CIRCUIT 5V For V = 0.4V OL 1533Ω and SDA 100pF A.C. CHARACTERISTICS (Continued)(Over recommended operating conditions, unless otherwise specified) ...
Page 12
... X4003/X4005 TIMING DIAGRAMS Bus Timing t F SCL t SU:STA t HD:STA SDA IN SDA OUT WP Pin Timing Start SCL SDA IN WP Write Cycle Timing SCL th SDA 8 Bit of Last Byte Nonvolatile Write Cycle Timing Symbol (7) t Write cycle time WC Note: ( the time from a valid stop condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. ...
Page 13
... Reset trip point voltage, X4003–4.5A, X4005–4.5A TRIP Reset trip point voltage, X4003, X4005 Reset trip point voltage, X4003–2.7A, X4005–2.7A Reset trip point voltage, X4003–2.7, X4005–2.7 Reset trip point voltage, X4003–1.8, X4005–1.8 t Power-up reset time out ...
Page 14
... X4003/X4005 RESET/RESET Output Timing Symbol Parameter t Watchdog time out period, WDO WD1 = 1, WD0 = 1 (factory setting) WD1 = 1, WD0 = 0 WD1 = 0, WD0 = 1 WD1 = 0, WD0 = pulse width to reset the watchdog CST t Reset time out RST V Programming Timing Diagram TRIP t THD t VPO Programming Parameters ...
Page 15
... X4003/X4005 PACKAGING INFORMATION 8-Lead Plastic Small Outline Gull Wing Package Type S Pin 1 Index 0.010 (0.25) 0.020 (0.50) 0° - 8° 0.016 (0.410) 0.037 (0.937) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.3 4/30/02 Pin 1 0.014 (0.35) 0.019 (0.49) 0.188 (4.78) 0.197 (5.00) (4X) 7° 0.050 (1.27) X 45° 0.0075 (0.19) 0.010 (0.25) FOOTPRINT www ...
Page 16
... X4003/X4005 PACKAGING INFORMATION 8-Lead Miniature Small Outline Gull Wing Package Type M 0.012 + 0.006 / -0.002 (0.30 + 0.15 / -0.05) 0.036 (0.91) 0.032 (0.81) 0.040 ± 0.002 (1.02 ± 0.05) 0.007 (0.18) 0.005 (0.13) REV 1.1.3 4/30/02 0.118 ± 0.002 (3.00 ± 0.05) 0.0256 (0.65) Typ. 0.118 ± 0.002 (3.00 ± 0.05) 0.030 (0.76) 0.0216 (0.55) 7° Typ. 0.008 (0.20) 0.004 (0.10) 0.150 (3.81) Ref. ...
Page 17
... AG = –1 +70°C) www.xicor.com Part Number RESET (Active HIGH) X4005S8–4.5A X4005S8I–4.5A X4005M8I–4.5A X4005S8 X4005S8I X4005M8I X4005S8–2.7A X4005S8I–2.7A X4005M8I–2.7A X4005S8–2.7 X4005S8I–2.7 X4005M8I–2.7 X4005S8–1.8 X4005M8–1.8 Blank = 8-Lead SOIC Characteristics subject to change without notice. ...
Page 18
... X4003/X4005 LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. ...