x5323v14zt1 Intersil Corporation, x5323v14zt1 Datasheet

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x5323v14zt1

Manufacturer Part Number
x5323v14zt1
Description
Cpu Supervisor With 32kb Spi Eeprom
Manufacturer
Intersil Corporation
Datasheet
CPU Supervisor with 32Kb SPI EEPROM
FEATURES
• Selectable watchdog timer
• Low V
• Determine watchdog or low voltage reset with a
• Long battery life with low power consumption
• 32Kbits of EEPROM
• Built-in inadvertent write protection
• 2MHz SPI interface modes (0,0 & 1,1)
• Minimize EEPROM programming time
• 2.7V to 5.5V and 4.5V to 5.5V power supply
• Available packages
• Pb-free plus anneal available (RoHS compliant)
BLOCK DIAGRAM
CS/WDI
—Five standard reset threshold voltages
—Re-program low V
—Reset signal valid to V
volatile flag bit
—<50µA max standby current, watchdog on
—<1µA max standby current, watchdog off
—<400µA max active current during read
—Power-up/power-down protection circuitry
—Protect 0, 1/4, 1/2 or all of EEPROM array with
—In circuit programmable ROM mode
—32-byte page write mode
—Self-timed write cycle
—5ms write cycle time (typical)
operation
—14 Ld TSSOP, 8 Ld SOIC, 8 Ld PDIP
V
using special programming sequence
Block Lock
SCK
CC
SO
WP
SI
CC
detection and reset assertion
protection
V
CC
CC
Reset Logic
®
Command
Decode &
Register
Control
Threshold
Logic
1
reset threshold voltage
Data
CC
= 1V
Data Sheet
Watchdog Transition
V
Detector
TRIP
1-888-INTERSIL or 1-888-468-3774
Protect Logic
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Register
8Kbits
8Kbits
16Kbits
Status
+
-
DESCRIPTION
These devices combine four popular functions, Power-on
Reset Control, Watchdog Timer, 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 Watchdog Timer provides an independent protec-
tion mechanism for microcontrollers. When the micro-
controller fails to restart a timer within a selectable
time
RESET/RESET signal. The user selects the interval
from three preset values. Once selected, the interval
does not change, even after cycling the power.
The device’s low V
user’s system from low voltage conditions, resetting the
system when V
point. RESET/RESET is asserted until V
proper operating level and stabilizes. Five industry stan-
dard V
unique circuits allow the threshold to be reprogrammed
to meet custom requirements or to fine-tune the thresh-
old for applications requiring higher precision.
October 27, 2005
TRIP
out
Power-on and
All other trademarks mentioned are the property of their respective owners.
Timer Reset
Low Voltage
Watchdog
Generation
Watchdog
Timebase
Reset &
|
Reset
Intersil (and design) is a registered trademark of Intersil Americas Inc.
thresholds are available, however, Intersil’s
interval,
CC
(Replaces X25323, X25325)
Copyright Intersil Americas Inc. 2005. All Rights Reserved
falls below the minimum V
CC
detection circuitry protects the
the
X5323, X5325
device
RESET/RESET
X5323 = RESET
X5325 = RESET
activates
CC
FN8131.1
returns to
CC
the
trip

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x5323v14zt1 Summary of contents

Page 1

Data Sheet CPU Supervisor with 32Kb SPI EEPROM FEATURES • Selectable watchdog timer • Low V detection and reset assertion CC —Five standard reset threshold voltages —Re-program low V reset threshold voltage CC using special programming sequence —Reset signal ...

Page 2

Ordering Information PART NUMBER RESET PART (ACTIVE LOW) MARKING X5323P-4.5A X5323P AL X5325P-4.5A X5323PZ-4.5A (Note) X5323P Z AL X5325PZ-4.5A X5323PI-4.5A X5323P AM X5325PI-4.5A X5323PIZ-4.5A (Note) X5323P Z AM X5325PIZ-4.5A X5323S8-4.5A X5323 AL X5325S8-4.5A X5323S8Z-4.5A (Note) X5323 Z AL X5325S8Z-4.5A (Note) ...

Page 3

Ordering Information (Continued) PART NUMBER RESET PART (ACTIVE LOW) MARKING X5323V14-2.7A X5323V AN X5325V14-2.7A X5323V14Z-2.7A X5323V Z AN X5325V14Z-2.7A (Note) (Note) X5323V14I-2.7A X5325V14I-2.7A X5323V14IZ-2.7A X5323V Z AP X5325V14IZ-2.7A (Note) (Note) X5323P-2.7 X5323P F X5325P-2.7 X5323PZ-2.7 (Note) X5323P Z F X5325PZ-2.7 ...

Page 4

PIN CONFIGURATION 8 Ld SOIC/PDIP CS/WDT 1 X5323/ PIN DESCRIPTION Pin Pin (SOIC/PDIP) TSSOP Name 1 1 CS/WDI SCK ...

Page 5

PRINCIPLES OF OPERATION Power-on Reset Application of power to the X5323/X5325 activates a power-on reset circuit. This circuit goes active at about 1V and pulls the RESET/RESET pin active. This signal prevents the system microprocessor from starting to operate with ...

Page 6

Figure 3. V Programming Sequence Flow Chart TRIP New V Applied = CC Old V Applied + Error CC Emax = Maximum Desired Error Figure 4. Sample V Reset Circuit TRIP 4.7K V TRIP Adj. Program 6 X5323, X5325 V ...

Page 7

SPI SERIAL MEMORY The memory portion of the device is a CMOS serial EEPROM array with Intersil’s block lock protection. The array is internally organized The device features a Serial Peripheral Interface (SPI) and software proto- col ...

Page 8

The Write Enable Latch (WEL) bit indicates the sta- tus of the write enable latch. When WEL = 1, the latch is set HIGH and when WEL = 0 the latch is reset LOW. The WEL bit is a volatile, ...

Page 9

In Circuit Programmable ROM Mode This mechanism protects the block lock and watchdog bits from inadvertent corruption. programmable ROM mode) the WP pin In the locked state ( is LOW and the nonvolatile bit WPEN is “1”. This mode disables ...

Page 10

Figure 6. Read Status Register Sequence CS 0 SCK SI High Impedance SO Figure 7. Write Enable Latch Sequence CS SCK SI SO Figure 8. Write Sequence SCK Instruction ...

Page 11

Figure 9. Status Register Write Sequence CS 0 SCK SI High Impedance SO SYMBOL TABLE WAVEFORM INPUTS OUTPUTS Must be Will be steady steady May change Will change from LOW from LOW to HIGH to HIGH May change Will change ...

Page 12

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 D.C. output current ............................................... 5mA Lead temperature (soldering, 10s) .................... 300°C RECOMMENDED OPERATING CONDITIONS Temperature Min. ...

Page 13

EQUIVALENT A.C. LOAD CIRCUIT 2.06kΩ Output RESET/RESET 3.03kΩ 100pF A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified) Serial Input Timing Symbol f Clock frequency SCK t Cycle time CYC t CS lead time LEAD t ...

Page 14

Serial Input Timing CS t LEAD SCK MSB IN High Impedance SO Serial Output Timing Symbol f Clock frequency SCK t Output disable time DIS t Output valid from clock low V t Output hold time HO ...

Page 15

Power-Up and Power-Down Timing Volts RESET (X5323) RESET (X5323) RESET Output Timing Symbol V Reset trip point voltage, X5323-4.5A, X5323-4.5A TRIP Reset trip point voltage, X5323, X5325 Reset trip point voltage, X5323-2.7A, X5325-2.7A Reset trip point voltage, ...

Page 16

RESET/RESET Output Timing Symbol Parameter t Watchdog time out period, WDO WD1 = 1, WD0 = 0 WD1 = 0, WD0 = 1 WD1 = 0, WD0 = pulse width to reset the watchdog CST t Reset ...

Page 17

V Programming Specifications V TRIP Parameter t SCK V program voltage setup time VPS TRIP t SCK V program voltage hold time VPH TRIP t V program pulse width P TRIP t V level setup time TSU TRIP t V ...

Page 18

TYPICAL PERFORMANCE V Supply Current vs. Temperature ( Watchdog Timer Watchdog Timer Watchdog Timer Off ( -40 25 Temp (°C) V vs. Temperature (programmed at ...

Page 19

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) 19 X5323, X5325 Pin 1 0.014 ...

Page 20

PACKAGING INFORMATION Half Shoulder Width On All End Pins Optional .073 (1.84) Typ. 0.010 (0.25) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH 20 X5323, X5325 8-Lead Plastic Dual In-Line Package Type ...

Page 21

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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