DATASHEET X5323, X5325 (Replaces X25323, X25325) FN8131 Rev 3.00 CPU Supervisor with 32kBit SPI EEPROM December 9, 2015 These devices combine four popular functions, Power-on Features Reset Control, Watchdog Timer, Supply Voltage Supervision, Selectable watchdog timer and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers system cost, reduces Low V detection and reset assertion CC board space requirements, and increases reliability. - Five standard reset threshold voltages - Re-program low V reset threshold voltage using CC Applying power to the device activates the power-on reset special programming sequence circuit which holds RESET/RESET active for a period of - Reset signal valid to V = 1V CC time. This allows the power supply and oscillator to stabilize Determine watchdog or low voltage reset with a volatile before the processor can execute code. flag bit The Watchdog Timer provides an independent protection Long battery life with low power consumption mechanism for microcontrollers. When the microcontroller - <50A max standby current, watchdog on fails to restart a timer within a selectable time out interval, - <1A max standby current, watchdog off the device activates the RESET/RESET signal. The user - <400A max active current during read selects the interval from three preset values. Once selected, 32kbits of EEPROM the interval does not change, even after cycling the power. Built-in inadvertent write protection The devices low V detection circuitry protects the users CC - Power-up/power-down protection circuitry system from low voltage conditions, resetting the system - Protect 0, 1/4, 1/2 or all of EEPROM array with Block when V falls below the minimum V trip point. CC CC Lock protection RESET/RESET is asserted until V returns to proper CC - In circuit programmable ROM mode operating level and stabilizes. Five industry standard V TRIP 2MHz SPI interface modes (0,0 and 1,1) thresholds are available, however, Intersils unique circuits allow the threshold to be reprogrammed to meet custom Minimize EEPROM programming time requirements or to fine-tune the threshold for applications - 32-byte page write mode requiring higher precision. - 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 (RoHS compliant) Block Diagram WATCHDOG TRANSITION WATCHDOG DETECTOR TIMER RESET WP PROTECT LOGIC RESET/RESET SI DATA STATUS REGISTER SO REGISTER X5323 = RESET COMMAND RESET AND X5325 = RESET SCK DECODE AND 8kBITS WATCHDOG CONTROL TIMEBASE LOGIC CS/WDI 8kBITS V THRESHOLD CC 16kBITS RESET LOGIC POWER-ON AND LOW VOLTAGE V + CC RESET - V GENERATION TRIP FN8131 Rev 3.00 Page 1 of 19 December 9, 2015 EEPROM ARRAYX5323, X5325 (Replaces X25323, X25325) Ordering Information V RANGE V RANGE TEMP RANGE CC TRIP PART NUMBER PART MARKING (V) (V) (C) PACKAGE RESET (Active Low) X5323PZ-4.5A (Note) X5323P ZAL 4.5 to 5.5 4.5 to 4.75 0 to +70 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8Z-4.5A) X5323PIZ-4.5A (Note) X5323P ZAM -40 to +85 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8IZ-4.5A) X5323S8Z-4.5A (Note) X5323 ZAL 0 to +70 8 Ld SOIC (Pb-free) X5323S8IZ-4.5A* (Note) X5323 ZAM -40 to +85 8 Ld SOIC (Pb-free) X5323V14-4.5A X5323 VAL 0 to +70 14 Ld TSSOP X5323PZ (Note) X5323P Z 4.5 to 5.5 4.25 to 4.5 0 to +70 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8Z) X5323PIZ (Note) X5323P ZI -40 to +85 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8IZ) X5323S8Z* (Note) X5323 Z 0 to +70 8 Ld SOIC (Pb-free) X5323S8IZ* (Note) X5323 ZI -40 to +85 8 Ld SOIC (Pb-free) X5323PZ-2.7A (Note) X5323P ZAN 2.7 to 5.5 2.85 to 3.0 0 to +70 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8Z-2.7A) X5323PIZ-2.7A (Note) X5323P ZAP -40 to +85 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8IZ-2.7A) X5323S8Z-2.7A* (Note) X5323 ZAN 0 to +70 8 Ld SOIC (Pb-free) X5323S8IZ-2.7A* (Note) X5323 ZAP -40 to +85 8 Ld SOIC (Pb-free) X5323PZ-2.7 (Note) X5323P ZF 2.7 to 5.5 2.55 to 2.7 0 to +70 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8Z-2.7) X5323PIZ-2.7 (Note) X5323P ZG -40 to +85 8 Ld PDIP** (Pb-free) (No longer available, recommended replacement: X5323S8IZ-2.7) X5323S8Z-2.7* (Note) X5323 ZF 0 to +70 8 Ld SOIC (Pb-free) X5323S8IZ-2.7* (Note) X5323 ZG -40 to +85 8 Ld SOIC (Pb-free) RESET (Active High) X5325S8Z-4.5A (Note) X5325 ZAL 4.5 to 5.5 4.5 to 4.75 0 to +70 8 Ld SOIC (Pb-free) X5325S8IZ-4.5A (Note) X5325 ZAM -40 to +85 8 Ld SOIC (Pb-free) X5325S8Z* (Note) X5325 Z 4.5 to 5.5 4.25 to 4.5 0 to +70 8 Ld SOIC (Pb-free) X5325S8IZ* (Note) X5325 ZI -40 to +85 8 Ld SOIC (Pb-free) X5325S8Z-2.7A (Note) X5325 ZAN 2.7 to 5.5 2.85 to 3.0 0 to +70 8 Ld SOIC (Pb-free) X5325S8IZ-2.7A (Note) X5325 ZAP -40 to +85 8 Ld SOIC (Pb-free) X5325S8Z-2.7* (Note) X5325 ZF 2.7 to 5.5 2.55 to 2.7 0 to +70 8 Ld SOIC (Pb-free) X5325S8IZ-2.7* (Note) X5325 ZG -40 to +85 8 Ld SOIC (Pb-free) *Add -T1 for tape and reel. Please refer to TB347 for details on reel specifications. **Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. FN8131 Rev 3.00 Page 2 of 19 December 9, 2015