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X5328PI

Description
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
Categoryaccessories   
File Size808KB,21 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
Download Datasheet View All

X5328PI Overview

1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14

DATASHEET
X5328, X5329 (Replaces X25328, X25329)
CPU Supervisor with 32Kbit SPI EEPROM
FEATURES
• Low V
CC
detection and reset assertion
—Five standard reset threshold voltages
—Re-program low V
CC
reset threshold voltage
using special programming sequence
—Reset signal valid to V
CC
= 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
Protect Logic
Status
Register
EEPROM Array
8Kbits
8Kbits
16Kbits
FN8132
Rev 2.00
October 16, 2015
DESCRIPTION
These devices combine three popular functions, Power-
on 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 oscilla-
tor to stabilize before the processor can execute code.
The device’s low V
CC
detection circuitry protects the
user’s system from low voltage conditions by holding
RESET/RESET active when V
CC
falls below a mini-
mum V
CC
trip point. RESET/RESET remains asserted
until V
CC
returns to proper operating level and stabi-
lizes. Five industry standard V
TRIP
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 applica-
tions requiring higher precision.
Reset
Timebase
Power-on and
Low Voltage
Reset
Generation
RESET/RESET
V
CC
V
TRIP
+
-
X5328 = RESET
X5329 = RESET
FN8132 Rev 2.00
October 16, 2015
Page 1 of 21
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