X5168 INTERSIL [Intersil Corporation], X5168 Datasheet

X5168

Manufacturer Part Number

X5168

Description

CPU Supervisor with 16Kbit SPI EEPROM

Manufacturer

INTERSIL [Intersil Corporation]

Datasheets

1.X5168.pdf (19 pages)

2.X5168.pdf (20 pages)

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Download datasheet (336Kb)

CPU Supervisor with 16Kbit SPI EEPROM

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 oscillator to stabilize

before the processor can execute code.

The device’s low V

system from low voltage conditions by holding

RESET/RESET active when V

trip point. RESET/RESET remains asserted until V

to proper operating level and stabilizes. Five industry

standard V

unique circuits allow the threshold to be reprogrammed to

meet custom requirements or to fine-tune the threshold in

applications requiring higher precision.

Block Diagram

TRIP

SCK

thresholds are available, however, Intersil’s

detection circuitry protects the user’s

falls below a minimum V

Data Sheet

Command

Decode &

TRIP

Control

Logic

Data

returns

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Protect Logic

Power-on and

Low Voltage

Generation

Timebase

4Kbits

8Kbits

Status

Reset

Features

• Low V

• Long Battery Life with Low Power Consumption

• 16Kbits 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)

- Five 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

- Power-up/power-down protection circuitry

- Protect 0, 1/4, 1/2 or all of EEPROM array with Block

- 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

special programming sequence

Lock

All other trademarks mentioned are the property of their respective owners.

June 15, 2006

™

Detection and Reset Assertion

protection

Intersil (and design) is a registered trademark of Intersil Americas Inc.

(Replaces X25268, X25169)

reset threshold voltage using

RESET/RESET

X5168 = RESET

X5169 = RESET

= 1V

X5168, X5169

FN8130.2

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