Document
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X5328, X5329
(Replaces X25328, X25329)
Data Sheet October 17, 2005 FN8132.1
CPU Supervisor with 32Kbit SPI EEPROM
FEATURES • Low VCC detection and reset assertion —Five standard reset threshold voltages —Re-program low VCC reset threshold voltage using special programming sequence —Reset signal valid to VCC = 1V • Long battery life with low power consumption —<1µA max standby current —<400µA max active current during read • 32Kbits of EEPROM • Built-in inadvertent write protection —Power-up/power-down protection circuitry —Protect 0, 1/4, 1/2 or all of EEPROM array with Block Lock™ protection —In circuit programmable ROM mode • 2MHz SPI interface modes (0,0 & 1,1) • Minimize EEPROM programming time —32-byte page write mode —Self-timed write cycle —5ms write cycle time (typical) • 2.7V to 5.5V and 4.5V to 5.5V power supply operation • Available packages —14 Ld TSSOP, 8 Ld SOIC, 8 Ld PDIP • Pb-free plus anneal available (RoHS compliant) BLOCK DIAGRAM
WP SI SO SCK CS Data Register Command Decode & Control Logic
DESCRIPTION These devices combine three popular functions, Poweron Reset Control, Supply Voltage Supervision, and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. Applying power to the device activates the power-on reset circuit which holds RESET/RESET active for a period of time. This allows the power supply and oscillator to stabilize before the processor can execute code. The device’s low VCC detection circuitry protects the user’s system from low voltage conditions by holding RESET/RESET active when VCC falls below a minimum VCC trip point. RESET/RESET remains asserted until VCC returns to proper operating level and stabilizes. Five industry standard VTRIP thresholds are available, however, Intersil’s unique circuits allow the threshold to be reprogrammed to meet custom requirements or to fine-tune the threshold in applications requiring higher precision.
Protect Logic Status Register EEPROM Array 8Kbits 8Kbits 16Kbits
Reset Timebase RESET/RESET
VCC VTRIP
+ -
Power-on and Low Voltage Reset Generation
X5328 = RESET X5329 = RESET
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
X5328, X5329 Ordering Information
PART NUMBER RESET (ACTIVE LOW) X5328P-4.5A X5328PZ-4.5A (Note) X5328PI-4.5A PART MARKING PART NUMBER RESET (ACTIVE HIGH) X5329P-4.5A X5328P Z AL X5329PZ-4.5A (Note) X5329PI-4.5A X5329P Z AL PART MARKING VCC RANGE TEMP (V) VTRIP RANGE RANGE (°C) 4.5-5.5 4.5-4.75 0 to 70 0 to 70 -40 to 85 -40 to 85 0 to 70 0 to 70 -40 to 85 X5329 Z AM -40 to 85 0 to 70 X5329V Z AL 0 to 70 -40 to 85 X5329V Z AM X5329P X5329P Z X5329P I X5329P.