x5083s8izt2 Intersil Corporation, x5083s8izt2 Datasheet

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x5083s8izt2

Manufacturer Part Number
x5083s8izt2
Description
Cpu Supervisor With 8kbit Spi Eeprom
Manufacturer
Intersil Corporation
Datasheet
CPU Supervisor with 8Kbit SPI EEPROM
This device combines four popular functions, Power-on Reset
Control, Watchdog Timer, Supply Voltage Supervision, and
Block Lock 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 active for a period of time. This
allows the power supply and oscillator to stabilize before the
processor can execute code.
The Watchdog Timer provides an independent protection
mechanism for microcontrollers. When the microcontroller fails to
restart a timer within a selectable time out interval, the device
activates the 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
system from low voltage conditions, resetting the system
when V
asserted until V
stabilizes. Five industry standard V
available, however, Intersil’s unique circuits allow the threshold
to be reprogrammed to meet custom requirements or to fine-
tune the threshold for applications requiring higher precision.
Pinouts
CC
falls below the minimum V
CS/WDI
CS/WDI
CC
RESET
V
V
WP
SO
CC
returns to the proper operating level and
SO
CC
SS
8 LD SOIC, 8 LD PDIP
detection circuitry protects the user’s
8 LD TSSOP
1
2
3
4
1
2
3
4
®
X5083
X5083
1
TRIP
8
7
6
5
8
7
6
5
Data Sheet
CC
thresholds are
SCK
SI
V
WP
V
RESET
SCK
SI
trip point. RESET is
SS
CC
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Low V
• Selectable time out watchdog timer
• Long battery life with low power consumption
• 8Kbits of EEPROM
• Save critical data with Block Lock
• Built-in inadvertent write protection
• SPI Interface - 3.3MHz clock rate
• Minimize programming time
• SPI modes (0,0 & 1,1)
• Available packages
• Pb-free plus anneal available (RoHS compliant)
Applications
• Communications Equipment
• Industrial Systems
• Computer Systems
• Battery Powered Equipment
- Four standard reset threshold voltages
- Re-program low V
- Reset signal valid to V
- <50µA max standby current, watchdog on
- <1µA max standby current, watchdog off
- <400µA max active current during read
- Block lock first or last page, any 1/4 or lower 1/2 of
- Write enable latch
- Write protect pin
- 16 byte page write mode
- 5ms write cycle time (typical)
- 8 Ld TSSOP, 8 Ld SOIC, 8 Ld PDIP
- Routers, Hubs, Switches
- Set Top Boxes
- Process Control
- Intelligent Instrumentation
- Desktop Computers
- Network Servers
4.63V, 4.38V, 2.93V, 2.63V
special programming sequence
EEPROM array
All other trademarks mentioned are the property of their respective owners.
CC
June 15, 2006
|
detection and reset assertion
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved
CC
reset threshold voltage using
CC
= 1V
memory
X5083
FN8127.3

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x5083s8izt2 Summary of contents

Page 1

Data Sheet CPU Supervisor with 8Kbit SPI EEPROM This device combines four popular functions, Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space ...

Page 2

Typical Application 2.7-5.0V VCC 10K X5083 RESET CS SCK VSS Block Diagram TRIP WATCHDOG TRANSITION DETECTOR CS/WDI COMMAND SI DECODE & SO CONTROL LOGIC SCK WP PROTECT LOGIC 2 X5083 VCC uC ...

Page 3

Ordering Information PART NUMBER RESET (ACTIVE LOW) PART MARKING X5083P-4.5A X5083P AL X5083PZ-4.5A (Note) X5083P ZAL X5083PI-4.5A X5083P AM X5083PIZ-4.5A (Note) X5083P ZAM X5083S8-4.5A X5083 AL X5083S8Z-4.5A (Note) X5083 ZAL X5083S8I-4.5A* X5083 AM X5083S8IZ-4.5A* (Note) X5083 ZAM X5083V8-4.5A 583 AL ...

Page 4

Ordering Information (Continued) PART NUMBER RESET (ACTIVE LOW) PART MARKING X5083P-2.7 X5083P F X5083PZ-2.7 (Note) X5083P ZF X5083PI-2.7 X5083P G X5083PIZ-2.7 (Note) X5083P ZG X5083S8-2.7* X5083 F X5083S8Z-2.7* (Note) X5083 ZF X5083S8I-2.7* X5083 G X5083S8IZ-2.7* (Note) X5083 ZG X5083V8-2.7 583 ...

Page 5

Principles of Operation Power-on Reset Application of power to the X5083 activates a power-on reset circuit. This circuit goes LOW at 1V and pulls the RESET pin active. This signal prevents the system microprocessor from starting to operate with insufficient ...

Page 6

SCK SI 06h WREN FIGURE 1. SET SCK SI 06h WREN FIGURE 2. RESET Adjust V ...

Page 7

New V Applied = CC Old V Applied + Error CC NO Error ≤ –Emax Emax = Maximum Desired Error FIGURE 4. V TRIP 7 X5083 V Programming TRIP Execute Reset V TRIP Sequence Set Applied = ...

Page 8

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 protocol allowing ...

Page 9

Watchdog Timer The watchdog timer bits, WD0 and WD1, select the watchdog time out period. These nonvolatile bits are programmed with the WRSR instruction. A change to the Watchdog Timer, either setting a new time out period or turning it ...

Page 10

Data Protection The following circuitry has been included to prevent inadvertent writes: • A WREN instruction must be issued to set the write enable latch. • CS must come HIGH at the proper clock count in order to start a ...

Page 11

CS SCK SI High Impedance SCK Instruction SCK Data Byte FIGURE 8. ...

Page 12

SCK READ STATUS INSTRUCTION SI NONVOLATILE WRITE IN PROGRESS SO SO MSB HIGH while in the Nonvolatile write cycle SCK READ STATUS ...

Page 13

CS SCK SI Non-volatile Write Operation FIGURE 11. END OF NONVOLATILE WRITE (NO POLLING) 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 ...

Page 14

Absolute Maximum Ratings Temperature Under Bias . . . . . . . . . . . . . . . . . . . . . .-65°C to 135°C Storage Temperature . . . . . . . . ...

Page 15

Equivalent A.C. Load Circuit 1.64kΩ SO OUTPUT 1.64kΩ 100pF AC Electrical Specifications (Over recommended operating conditions, unless otherwise specified) SYMBOL DATA INPUT TIMING f Clock frequency SCK t Cycle time CYC t CS lead time LEAD ...

Page 16

Serial Output Timing CS SCK MSB Out ADDR SI LSB IN Serial Input Timing CS t LEAD SCK MSB IN High Impedance SO Power-Up and Power-Down Timing V TRIP PURST 0 ...

Page 17

RESET Output Timing SYMBOL V Reset trip point voltage, X5083PT-4.5A (Note 6) TRIP Reset trip point voltage, X5083PT Reset trip point voltage, X5083PT-2.7A Reset trip point voltage, X5083PT-2.7 t Power-up reset time out PURST t (Note 5) V detect to ...

Page 18

V Programming Timing Diagram TRIP TRIP VPS CS SCK SI 06h WREN V Programming Parameters TRIP PARAMETER t V program enable voltage setup time VPS TRIP t V program enable voltage ...

Page 19

Small Outline Package Family (SO PIN #1 I.D. MARK 0.010 SEATING PLANE 0.004 C 0.010 MDP0027 SMALL OUTLINE PACKAGE FAMILY (SO) SYMBOL SO-8 SO-14 ...

Page 20

Plastic Dual-In-Line Packages (PDIP) D SEATING PLANE MDP0031 PLASTIC DUAL-IN-LINE PACKAGE SYMBOL PDIP8 PDIP14 A 0.210 0.210 A1 0.015 0.015 A2 0.130 0.130 b 0.018 0.018 b2 0.060 0.060 c 0.010 0.010 D 0.375 0.750 E 0.310 ...

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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