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Rev 2; 8/04

CPU Supervisor with Nonvolatile Memory and

Programmable I/O

General Description

The DS4510 is a CPU supervisor with integrated 64-

byte EEPROM memory and four programmable, non-

volatile (NV) I/O pins. It is configured with an

industry-standard I

C interface using either fast-mode

(400kbps) or standard-mode (100kbps) communica-

tion. The I/O pins can be used as general-purpose I

C-

to-parallel I/O expander with unlimited read/write

capability. EEPROM registers allow the power-on value

of the I/O pins to be adjusted to keep track of the sys-

tem’s state through power cycles, and the CPU supervi-

sor’s timer can be adjusted between 125ms and

1000ms to meet most any application need.

Features

♦

Accurate 5%, 10%, or 15% 5V Power-Supply

Monitoring

♦

Programmable Reset Timer Maintains Reset After

Returns to an In-Tolerance Condition

♦

Four Programmable, NV, Digital I/O Pins with

Selectable Internal Pullup Resistor

♦

64 Bytes of User EEPROM

♦

Reduces Need for Discrete Components

♦

C-Compatible Serial Interface

♦

10-Pin µSOP Package

DS4510

Applications

RAM-Based FPGA Bank Switching for

Multiple Profiles

Industrial Controls

Cellular Telephones

PC Peripherals

PDAs

PART

DS4510U-5

DS4510U-10

DS4510U-15

DS4510U-5/T&R

DS4510U-10/T&R

DS4510U-15/T&R

Ordering Information

TRIP

POINT

10%

15%

10%

15%

PIN-

PACKAGE

-40°C to +85°C 10 µSOP

TEMP RANGE

-40°C to +85°C 10 µSOP

Pin Configuration

TOP VIEW

Typical Operating Circuit

2.7V TO 5.5V

4.7kΩ

SDA

SCL

GND

10 RST

I/O

4.7kΩ

RST

I/O

RESET

CONFIG0

DS4510

FROM

SYSTEM

CONTROLLER

SDA

DS4510

SCL

I/O

CONFIG1 FPGA

CONFIG2

CONFIG3

GND

I/O

SOP

______________________________________________

Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

CPU Supervisor with Nonvolatile Memory and

Programmable I/O

DS4510

ABSOLUTE MAXIMUM RATINGS

Voltage Range on V

, SDA, and SCL

Pins Relative to Ground.....................................-0.5V to +6.0V

Voltage Range on A

, I/O

Relative

to Ground ..............-0.5V to V

+ 0.5V, not to exceed +6.0V.

Operating Temperature Range ...........................-40°C to +85°C

EEPROM Programming Temperature .....................0°C to +70°C

Storage Temperature Range .............................-55°C to +125°C

Soldering Temperature .......................................See IPC/JEDEC

J-STD-020A Specification

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

RECOMMENDED DC OPERATING CONDITIONS

= -40°C to +85°C)

PARAMETER

Supply Voltage

Input Logic 1

Input Logic 0

SYMBOL

(Notes 1)

(Note 2)

CONDITIONS

MIN

2.7

0.7 x V

-0.3

TYP

MAX

5.5

+ 0.3

+0.3 x V

UNITS

DC ELECTRICAL CHARACTERISTICS

= 2.7V to 5.5V, T

= -40°C to +85°C.)

PARAMETER

Trip Point

Standby Current

Input Leakage

SDA Low-Level Output Voltage

I/O

Low-Level Output Voltage

RST

Pin Low-Level Output

I/O

Pullup Resistors

I/O Capacitance

SYMBOL

DS4510U-5

CCTP

STBY

OLIOX

OLRST

I/O

(Note 5)

3mA sink current

6mA sink current

4mA sink current

10mA sink current (Note 4)

4.0

5.0

DS4510U-10

DS4510U-15

= 5.0V (Note 3)

-1.0

CONDITIONS

MIN

4.5

4.25

4.0

TYP

4.625

4.375

4.125

MAX

4.75

4.49

4.24

+1.0

0.4

0.6

0.4

6.5

µA

kΩ

UNITS

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CPU Supervisor with Nonvolatile Memory and

Programmable I/O

CPU SUPERVISOR AC ELECTRICAL CHARACTERISTICS (See

Figure

= 2.7V to 5.5V, T

= -40°C to +85°C.)

PARAMETER

SYMBOL

CONDITIONS

TD1= 0, TD0 = 0

RST

Active Time

RST

TD1= 0, TD0 = 1

TD1= 1, TD0 = 0

TD1= 1, TD0 = 1

TD1= 0, TD0 = 0

Detect to

RST

RPU

TD1= 0, TD0 = 1

TD1= 1, TD0 = 0

TD1= 1, TD0 = 1

Fail to

RST

RPD

MIN

112

225

450

900

112

225

450

900

TYP

125

250

500

1000

125

250

500

1000

MAX

138

275

550

1100

138

275

550

1100

µs

UNITS

DS4510

AC ELECTRICAL CHARACTERISTICS (See

Figure

= 2.7V to 5.5V, T

= -40°C to +85°C, timing referenced to V

IL(MAX) and

IH(MIN).)

PARAMETER

SCL Clock Frequency

Bus Free Time Between Stop and

Start Conditions

Hold Time (Repeated) Start

Condition

Low Period of SCL

High Period of SCL

Data Hold Time

Data Setup Time

Start Setup time

SDA and SCL Rise Time

SDA and SCL Fall Time

Stop Setup Time

SDA and SCL Capacitive

EEPROM Write Time

SYMBOL

SCL

BUF

HD:STA

LOW

HIGH

HD:DAT

SU:DAT

SU:STA

SU:STO

(Note 7)

CONDITIONS

(Note 6)

MIN

1.3

0.6

1.3

0.6

100

0.6

20 + 0.1C

0.6

400

300

0.9

TYP

MAX

400

UNITS

kHz

µs

_____________________________________________________________________

CPU Supervisor with Nonvolatile Memory and

Programmable I/O

DS4510

NONVOLATILE MEMORY CHARACTERISTICS

2.7V

to 5.5V, T

= 0°C to +70°C.)

PARAMETER

Writes

SYMBOL

+70°C (Note 5)

CONDITIONS

MIN

50,000

TYP

MAX

UNITS

Note 1:

Note 2:

Note 3:

Note 4:

Note 5:

Note 6:

Note 7:

Note 8:

All voltages referenced to ground.

The DS4510 does not obstruct the SDA and SCL lines if V

is switched off, as long as the voltages applied to these

inputs do not violate their min and max input voltage levels.

ISTBY specified with V

equal to 5.0V, and control port-logic pins are driven to ground or V

for the corresponding

inactive state (SDA = SCL = V

), does not include pullup resistor current.

See

Typical Operating Characteristics

for the

RST

output voltage vs. supply voltage.

This parameter is guaranteed by design.

C interface timing shown for is for fast-mode (400kHz) operation. This device is also backward compatible with I

standard-mode timing.

CB—total capacitance of one bus line in picofarads.

EEPROM write time applies to all the EEPROM memory and SEEPROM memory when

SEE

= 0. The EEPROM write time

begins at the occurrence of a stop condition.

Typical Operating Characteristics

= +5.0V, T

= +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

DS4510 toc01

SUPPLY CURRENT vs. TEMPERATURE

DS4510 toc02

SUPPLY CURRENT vs. SCL FREQUENCY

DS4510 toc03

(10%)

TRIP POINT

SUPPLY CURRENT (µA)

SDA = SCL = V

SUPPLY CURRENT (µA)

SDA = V

SUPPLY CURRENT (µA)

SDA = SCL = V

I/O CONTROL BITS = 0

I/O PULLUPS DISABLED

3.0

3.5

4.0

4.5

5.0

SUPPLY VOLTAGE (V)

-40

-20

100

200

300

400

TEMPERATURE (°C)

SCL FREQUENCY (kHz)

_____________________________________________________________________

CPU Supervisor with Nonvolatile Memory and

Programmable I/O

DS4510

Typical Operating Characteristics (continued)

= +5.0V, T

= +25°C, unless otherwise noted.)

TRIP POINT vs. TEMPERATURE

DS4510 toc04

RST OUTPUT VOLTAGE vs. SUPPLY VOLTAGE

DS4510 toc05

I/O PULLUP RESISTANCE vs. TEMPERATURE

5.20

I/O PULLUP RESISTANCE (kΩ)

5.15

5.10

5.05

5.00

4.95

4.90

4.85

4.80

4.75

DS4510 toc06

5.0

4.9

4.8

TRIP POINT (V)

4.7

4.6

4.5

4.4

4.3

4.2

4.1

4.0

-40

-20

TEMPERATURE (°C)

6.0

5.5

RESET TRIP VOLTAGE (V)

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

5.25

5.6kΩ PULLUP

RESISTOR ON RST

SDA = SCL = V

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

SUPPLY VOLTAGE (V)

-40

-20

TEMPERATURE (°C)

Pin Description

NAME

SDA

SCL

GND

I/O3

I/O2

I/O1

I/O0

RST

FUNCTION

C Address Input. This input pin determines the chip address of the device. A

= 0 sets the slave

address to 1010000b, A

= 1 sets the slave address to 1010001b.

Serial Data Input/Output. Bidirectional I

C data pin.

Serial Clock Input. I

C clock input.

Power Input

Ground

Input/Output 3. I

C accessible bidirectional I/O pin.

Input/Output 2. I

C accessible bidirectional I/O pin.

Input/Output 1. I

C accessible bidirectional I/O pin.

Input/Output 0. I

C accessible bidirectional I/O pin.

Active-Low Reset Output. Open-drain CPU supervisor reset output.

_____________________________________________________________________