MB3773_技术文档

FUJITSU SEMICONDUCTOR

DATA SHEET

DS04-27401-4E

ASSP

Power Supply Monitor

with Watch-Dog Timer

MB3773

■ DESCRIPTION

The Fujitsu MB3773 is designed to monitor the voltage level of a power supply (+5V or an

arbitrary voltage) in a microprocessor circuit, memory board in a large-size computer, for

example. The MB3773 also contains a watch-dog timer function to detect uncontrol. Table

status of processor and reset system/processor.

If the circuit’s power supply deviates more than a specified amount, then the MB3773

generates a reset signal to the microprocessor. Thus, the computer data is protected from

accidental erasure.

PLASTIC PACKAGE

When the MB3773 does not receive the clock pulse from the processor in the specified

period, the MB3773 generates a reset signal to the mciroprocessor.

DIP-8P-M01

Using the MB3773 requires few external components. To monitor only a +5 volt supply,

the MB3773 requires the connection of one external capacitor.

The MB3773 is available in an 8-pin Dual In-Line package space saving Flat Package, or

a Single In-Line Package.

•Precision voltage detection (VS = 4.2V ±2.5%)

•Threshold level with hysterisis

PLASTIC PACKAGE

FPT-8P-M01

•Low voltage output for reset signal (VCC = 0.8V typ.)

•Precision reference voltage output (VREF = 1.245 V±1.5%)

•External clock monitor and reset signal generator

•Negative-edge input watch-dog timer

•Minimal number of external components (one capacitor min.)

•Available in a variety of packages

• 8-pin Dual In-Line Package

PLASTIC PACKAGE

SIP-8P-M03

• 8-pin Flat Package

• 8-pin Single In-Line Package

This device contains circuitry to protect the inputs

against damage due to high static voltages or

electric fields. However, it is advised that normal

precautions be taken to avoid application of any

voltage higher than maximum rated voltages to this

high impedance circuit.

1

MB3773

■ PIN ASSIGNMENT

8

7

6

RESET

VS

VREF

CT

RESET

CK

8

7

6

5

RESET

VS

1

2

VCC

5

4

Front

View

Top View

GND

CK

3

4

VREF

VCC

GND

3

2

1

RESET

CT

(DIP-8P-M01)

(FPT-8P-M01)

(SIP-8P-M03)

■ ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Rating

Unit

V

Supply voltage

VCC

-0.3 to +18

S

CC

≤

V

-0.3 to V +0.3 ( +18)

V

Input voltage

VS

VOH

PD

-0.3 to +18

V

RESET, RESET Supply voltage

Power dissipation(Ta ≤ 85°C)

Storage temperature

-0.3 to VCC +0.3 (≤+18)

200

V

mW

°C

TSTG

-55 to +125

NOTE: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be

restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions

for extended periods may affect device reliability.

2

MB3773

■ BLOCK DIAGRAM

VCC

5

Reference AMP.

1.24V

Reference Voltage Generator

+

_

VREF

6

100

kΩ

1.2µA

COMP.O

10µA

+

_

+

_

10µA

COMP.S

+

R

S

Q

_

VS

7

40kΩ

Inhibit

CK

Watch

Dog

3

Timer

P. G

GND

4

2

1

8

CT

RESET

■ RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

VCC

IOL

Value

Unit

V

Supply voltage

+3.5 to +16

0 to 20

Reset, reset sink current

VREF output current

mA

µA

ms

µs

IOUT

tWD

-200 to +5

0.1 to 1000

<100

Watch clock setting time

Rising/falling time

tFC, tRC

CT

Terminal capacitance

Operating ambient temperature

0.001 to 10

-40 to +85

µF

°C

Ta

3

MB3773

■ ELECTORICAL CHARACTERISTICS

(

1) DC Characteristics

(VCC=5V, Ta=25°C)

Value

Parameter

Condition

Symbol

Unit

Min

Typ

Max

Supply current

Watch dog timer operating

VCC

ICC

-

600

900

µA

4.10

4.05

4.20

4.15

50

4.20

4.30

100

4.30

4.35

4.40

4.45

150

VSL

VSH

Ta = -40°C to +85°C

VCC

Detection voltage

Hysterisis width

V

Ta = -40°C to +85°C

VHYS

VREF

mV

V

VCC

-

Ta = -40°C to +85°C

VCC = 3.5 to 16V

1.227 1.245 1.263

1.215 1.245 1.275

Reference voltage

Reference voltage change rate

∆VREF1

∆VREF2

-

3

-

10

+5

mV

V

Reference voltage output

loading change rate

IOUT = -200µA to+5µA

-5

CK threshold voltage

Ta = -40°C to +85°C

VCK = 5.0V

VTH

I^IH

0.8

-

1.25

0

2.0

1.0

-

CK input current

µA

V

VCK = 0.0V

I^IL

-1.0

-0.1

Watch dog timer operating

VCT = 1.0V

CK input current

ICTD

7

10

14

VS open, IRESET = -5µA

VS = 0V, IRESET = -5µA

VS = 0V, IRESET = 3mA

VS = 0V, IRESET = 10mA

VS open, IRESET = 3mA

VS open, IRESET = 10mA

VS = 0V, VRESET = 1.0V

VS open, VRESET = 1.0V

VOH1

VOH2

VOL1

VOL2

VOL3

VOL4

IOL1

4.5

-

4.9

0.2

0.3

0.2

0.3

60

-

High level output voltage

0.4

0.5

0.4

0.5

-

Output saturation voltage

Output sink current

V

-

20

mA

IOL2

60

-

4

MB3773

)

(1) DC Characteristics (Continued

(VCC=5V, Ta=25°C)

Value

Parameter

Condition

Symbol

Unit

Min

Typ

Max

Power on reset operating

VCT = 1.0V

CT charge current

ICTU

0.5

1.2

2.5

µA

V

VRESET = 0.4V

IRESET = 0.2mA

Min. supply voltage for RESET

VCCL1

VCCL2

-

0.8

1.2

VRESET =VCC -0.1V

RL (2 pin - GND) = 1MΩ

V

(

2)AC Characteristics

(VCC=5V, Ta=25°C)

Value

Parameter

Condition

Symbol

TPI

Unit

Min

Typ

Max

5V

^VCC4V

VCC input pulse width

8.0

-

µs

CK input pulse width

CK input frequency

CK

TCKW

3.0

-

µs

or

TCK

20

5

-

µs

Watch dog timer

watching time

CT = 0.1µF

TWD

10

15

ms

Watch dog timer

reset time

TWR

TPR

TPD1

TPD2

tR

1

50

-

2

100

2

3

ms

Rising reset hold time

T

C = 0.1µF, V

CC

150

10

RESET, RL = 2.2kΩ

CL = 100pF

Output propagation

Delay time from VCC

µs

RESET, RL = 2.2kΩ

CL = 100pF

-

3

10

RL = 2.2kΩ

CL = 100pF

Output rising time *

Output falling time *

-

1.0

0.1

1.5

0.5

RL = 2.2kΩ

CL = 100pF

tF

-

* Output rising/falling time are measured at 10% to 90% of voltage.

5

MB3773

Fig. 1 - MB3773 Basic Operation

VCC

CT = 0.1µF

(100ms)

(10ms)

VCC

Logic Circuit

TPR (ms)

TWD (ms)

TWR (ms)

1000 · CT (µF)

100 · CT

(µF)

RESET

CK

CT

RESET

CK

20 · CT

(µF)

(2ms)

GND

VCC

VSH

VSL

0.8V

CK

TCK

CT

TPR

TWD

TPR

RESET

TWR

6

MB3773

■ TYPICAL CHARACTERISTIC CURVES

Fig. 2 - Supply current vs. supply voltage

Fig. 3 - Output voltag vs. supply voltage

(RESET pin)

6.0

5.0

4.0

3.0

2.0

0.75

Pull up 2.2kΩ

Ta = 85°C

Ta = 25°C

0.65

Ta = -40°C, 25°C, 85°C

Ta = -40°C

0.55

CT = 0.1µF

Ta = -40°C

0.45

Ta = 25°C

0.35

Ta = 85°C

0.25

1.0

0.15

0

1.0 2.0 3.0

4.0 5.0 6.0 7.0

0

2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0

Supply voltage VCC (V)

Fig. 5 - Detection voltage

(VSH, VSL) vs. temperature

Fig. 4 - Output voltag vs. supply voltage

(RESET pin)

(RESET, RESET pin)

6.0

5.0

4.0

3.0

2.0

1.0

4.50

4.44

4.30

Pull up 2.2kΩ

VSH

VSL

4.20

4.10

4.00

Ta = 85°C

Ta = 25°C

Ta = -40°C

-40 -20

0

20

40

60

80 100

0

1.0 2.0 3.0

4.0 5.0 6.0 7.0

Temperature Ta (°C)

Supply voltage VCC (V)

Fig. 7 - Output saturation

voltage vs. output sink current

(RESET pin)

Fig. 6 - Output saturation

voltage vs. output sink current

500

400

(RESET pin)

CT = 0.1µF

Ta = -40°C

400

Ta = 25°C

300

200

300

200

Ta = 25°C

Ta = 85°C

100

0

2.0

0

2.0

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0

Output sink current IOL2 (mA)

4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0

Output sink current IOL8 (mA)

7

MB3773

■ TYPICAL CHARACTERISTIC CURVES (Continued)

Fig. 8 - High level output voltage

vs. high level output current

(RESET pin)

Fig. 9 - High level output voltage

vs. high level output current

(RESET pin)

5.0

4.5

4.0

CT = 0.1µF

Ta = 25

Ta = 85

Ta = 25°C

4.5

4.0

Ta = -40°C

Ta= 85°C

0

-5

-10

-15

0

-5

-10

-15

High level output current IOH2 (µA)

High level output current IOH8 (µA)

Fig. 10 - Reference voltage

vs. supply voltage

Fig. 11 - Reference voltage

vs. reference current

1.246

1.244

1.242

1.240

1.238

1.236

1.234

Ta = 25°C

1.255

1.250

1.245

1.240

CT = 0.1µF

Ta = 85°C

Ta = -40°C

Ta= 25°C

Ta= 85°C

CT = 0.1µF

Ta = -40°C

0

-40

-80 -120 -160 -200 -240

0

3.0 5.0 7.0 9.0 11.0 13.0 15.0 17.0 19.0 21.0

Supply voltage VCC (V)

Reference current IREF (µA)

Fig. 12 - Reference voltage

vs. temperature

Fig. 13 - Rising reset hold time

vs. temperature

1.27

1.26

1.25

1.24

160

140

120

100

VCC = 5V

CT = 0.1µF

1.23

1.22

1.21

80

60

40

0

-40 -20

0

20

40

60

80 100

-40 -20

0

20

40

60

80 100

Temperature Ta(°C)

8

MB3773

■ TYPICAL CHARACTERISTIC CURVES (Continued)

Fig. 14 - Reset time vs.

temperature

Fig. 15 - Watch dog timer watching

time vs. temperature

(At watch dog timer)

16

VCC = 5V

CT = 0.1µF

3

2

VCC = 5V

CT = 0.1µF

14

12

10

8

1

0

6

4

0

-40 -20

0

20 40 60 80 100

-40 -20

0

20 40 60 80 100

Temperature Ta (°C)

Fig. 18 - Terminal capacitance vs.

watch dog timer watching time

Fig. 16 - Terminal capacitance

vs. rising reset hold time

Fig. 17 - Terminal capacitance

vs. reset time

(at watch dog timer)

10²

10⁶

10⁵

10⁴

10³

10⁵

10⁴

10¹

10³

Ta = -40°C

Ta=

25°C,

85°C

10²

Ta = -40°C

10⁰

10¹

Ta =

-40°C

Ta = 25°C,

Ta = 25°C

10^-1

10⁰

85°C

10^-1

10^-2

10^-3

10^-1

10^-2

10^-3

10^-2

10^-3

10¹10²

10⁰

10^-1

10^-2

10²

10^-3

10^-1

10⁰10¹

10¹10²

10^-310^-210^-110⁰

Terminal capacitance CT (µF)

9

MB3773

■ APPLICATION CIRCUIT

EXAMPLE 1 : Monitoring 5V Supply Voltage and Watch-dog Timer

VCC (5V)

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

CT

GND

• Supply voltage is monitored using Vs.

Detection voltage are VSH and VSL.

EXAMPLE 2 : 5V Supply Voltage Monitoring (external fine-tuning type)

VCC (5V)

MB3773

R1

R2

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

CT

GND

• Vs detection voltage can be adjusted externally.

• Selecting R¹and R²values that are sufficiently lower than the resistance of the IC’s internal

voltage divider allows the detection voltage to be setaccording to the resistance ratio between

R¹and R². (See the table below.)

R1 (kΩ)

10

R2 (kΩ)

3.9

Detection voltage:VSL (V)

Detection voltage:VSH (V)

4.4

4.1

4.5

4.2

9.1

3.9

10

MB3773

EXAMPLE 3 : With Forced Reset (with reset hold)

a

VCC

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

CT

SW

GND

• Grouding pin 7 at the time of SW ON sets RESET (pin 8) to Low and RESET (pin 2)

to High.

b

VCC

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

Tr

10k

Cr

GND

RESIN

• Feeding the signal to pin RESIN and turning on Tr sets the RESET pin to Low

and the RESET pin to High.

11

MB3773

EXAMPLE 4 : Montitoring Two Supply Voltages (with hysterisis, reset output and NMI)

VCC2(12V)

VCC1 (5V)

Logic circuit

MB3773

RESET

CK

1

2

3

4

8

7

6

5

CT

100k

R3

NMI or port

GND

180k

10k

R6

R4

+

_

Comp. 1

1.2k

R1

Comp. 2

5.1k

R2

4.7k

R5

Example

: Comp. 1, Comp. 2

: MB4204, MB47393

NOTE: The 5V supply voltage is monitored by the MB3773.

The 12V supply viltage is monitored by the external circuit. Its output is connected to the NMI

pin and, when voltage drops, Comp. 2 interrrupts the logic circuit.

• Use VCC1 (=5V) to power the comparators (Comp. 1 and Comp. 2) in the external circuit

shown above.

• The detection voltage of the VCC2 (=12V) supply voltage is approximately 0.2V.

VCC2 detection voltage and hysterisis width can be found using the following formulas:

R3 + (R4 // R5)

→

Detection voltage

× V

REF

V2H =

R4 // R5

R3 + R5

(Approx. 9.4V in the above illustration)

(Approx. 9.2V in the above illustration)

V2L =

× VREF

R5

→

HYS

2H

2L

Hysterisis width

V

= V - V

12

MB3773

EXAMPLE 5 : Montitoring Two (M) Supply Voltages (with hysterisis and reset output)

VCC2 (12V)

VCC1 (5V)

20k

R6

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

Diode

CT

30k

R3

GND

180k

R4

+

_

+

_

Comp. 1

1.2k

R1

Comp. 2

5.1k

R2

4.7k

R5

Example

: Comp. 1, Comp. 2

: MB4204, MB47393

SL), the MB3773

NOTE: When either 5V or 12V supply voltage decreases below its detection voltage (V

RESET pin is set to High and the MB3773 RESET pin is set to Low.

• Use VCC1 (=5V) to power the comparators (Comp. 1 and Comp. 2) in the external circuit shown

above.

• The detection voltage of the VCC2 (=12V) supply voltage is approximately 9.2V/9.4V and has a

hysterisis width of approximately 0.2V.

For the formulas for finding hysterisis width and detection voltage, see section 4.

13

MB3773

EXAMPLE 6 : Montitoring Low voltage and Overvoltage Monitoring (with hysterisis)

VCC (5V)

20k

R6

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

Diode

CT

30k

R3

GND

180k

R4

_

+

_

+

Comp. 1

1.2k

R1

Comp. 2

5.6k

R2

4.7k

R5

Example

: Comp. 1, Comp. 2

: MB4204, MB47393

RESET

VCC

0

V2L V2H

V1L V1H

• Comp. 1 and Comp. 2 are used to monitor for overvoltage while the MB3773 is used to monitor for low

voltage.

Detection voltages V1/V1H at the time of low voltage areappoximately 4.2V/4.3V. Detection voltages

V2L/V2H at the time of overvoltage are approximately 6.0V/6.1V.

For the formulas for finding hysterisis width and detection voltage, see section 4.

• Use VCC (=5V) to power the comparators (Comp. 1 and Comp. 2) in the external circuit shown above.

14

MB3773

EXAMPLE 7 : Monitoring Supply Voltage Using Delayed Trigger

VCC

5V

VCC

4V

MB3773

Logic circuit

RESET

CK

1

2

3

4

8

7

6

5

CT

C1

GND

• Adding voltage such as shown in the figure to VCC increases the minimum input pulse

width by 50 microseconds (C1 = 1000pF).

15

MB3773

EXAMPLE 8 : Stopping Watch-dog Timer (Monitering only supply voltage)

These are example application circuts in which the MB3773 monitors supply voltage alone without resetting

the microcomputer even if the latter, used in standby mode, stops sending the clock pulse to the MB3773.

•The watch-dog timer is inhibited by clamping the Cr pin voltage to VREF .

The supply voltage is constantly monitored even while the watch-dog timer is inhibited.

For this reason, a reset signal is output at the occurrence of either instataneous disruption or a sudden drop

to low voltage.

Note that in application examples a and b, the hold signal is inactive when the watch-dog timer is inhibited

at the time of resetting.

If the hold signal is active when tie microcomputer is reset, the solution is to add a gate, as in examples c and d.

a Using NPN transistor

VCC(5V)

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

HALT

GND

R2=1k

R1=1M

CT

b Using PNP transistor

VCC (5V)

MB3773

Logic circuit

RESET

CK

1

2

3

4

8

7

6

5

HALT

GND

R2=1k

R1=51k

CT

(Continued)

16

MB3773

(Continued)

c Using NPN transistor

VCC (5V)

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

R1=1M

HALT

GND

R2=1k

CT

d Using PNP transistor

VCC (5V)

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

R1=51k

HALT

GND

R2=1k

CT

17

MB3773

EXAMPLE 9 : Reducing Reset Hold Time

VCC(=5V)

VCC (=5V)

MB3773

Logic circuit

1

2

3

4

8

7

6

5

RESET

CK

1

2

3

4

8

7

6

5

RESET

CK

CT

GND

(a) TPR reduction method

(b) Standard usage

• RESET is the only output that can be used.

• Standard TPR, TWD and TWR value can be found using the following formulas.

Formulas :

TPR (ms)

100 × CT (µF)

16 × CT (µF)

TWD (ms)

TWR (ms)

• The above formulas allow fo standard values in determining TPR, TWD and TWR.

Reset hold time is compared below between the reduction circuitand the standard circuit.

CT = 0.1µF

T^PRreduction circuit

Standard circuit

100ms

10ms

1.6ms

TPR

TWD

TWR

10ms

2.0ms

18

MB3773

EXAMPLE 10 : Circuit for Monitoring Multiple Microcomputers

VCC (=5V)

FF1

D1

FF2

D2

FF3

D3

S

Q1

Q2

Q3

CK1 Q1

R

CK2 Q2

R

CK3 Q3

R

R2

R1

RESET

CK

RESET

CK

RESET

CK

GND

1

2

8

7

6

5

3

4

CT

MB3773

Figure 1

•

connects from FF1 and FF2 outputs Q1 and Q2 to the NOR input.

Depending on timing, these connections may not be necessary.

Example:R1 = R2 = 2.2kΩ

CT = 0.1µF

CK1

Q1

CK2

Q2

CK3

Q3

NOR

Output

Figure 2

19

MB3773

Description of Application Circuits

Using one MB3773, this application circuit monitors multiple microcomputers in one system. Signals from each microcomputer

are sent to FF1, FF2 and FF3 clock inputs. Figure 2 shows these timings. Each flip-flop operates using signals sent from mi-

crocomputers as its clock pulse. When even one signal stops, the relevant receiving flip-flop stops operating. As a result, cy-

clical pulses are not generated at output Q3. Since the clock pulse stops arriving at the CK pin of the MB3773, the MB3773

generates a reset signal.

Note that output Q3 frequncy f will be in the following range, where the clock frequencies of CK1, CK2 and CK3 are f1, f2 and f3

respectively.

1

f0

1

f

1

f

3

--- --

≤

≤ ---- --- ----

+ +

f

1

f

2

where f0 is the lowest frequency among f1, f2 and f3.

20

MB3773

EXAMPLE 11 : Circuit for Limiting Upper Clock Input Frequency

VCC (5V)

R2

1

2

3

4

8

7

6

5

RESET

CT

R1=10kΩ

CK

Tr1

GND

C2

• This is an example application to limit upper frequency fH of clock pulses sent from the

microcomputer.

If the CK cycle sent from the microcomputer exceeds fH, the circuit generates a reset

signal.

(The lower freqency has already been set using Cr.)

• When a clock pulse such as shown below is sent to pin CK, a short T2 prevents C2 voltage

from reaching the CK input threshold level ( 1.25V), and will cause a reset signal to be

output.

The T1 value can be found using the following formula :

T1 0.3 C2R2

T2

CK waveform

where VCC = 5V, T3 ≥ 3.0µsec, T2 ≥ 20µsec

T3

C2 voltage

T1

Example : Setting C and R allow the upper T1 value to be set (See the table below.)

C

R

T1

0.01µF

0.1µF

10kΩ

30µs

300µs

21

MB3773

■ PACKAGE DIMENSIONS

8 pin, Plastic DIP

(DIP-8P-M01)

+0.40

–0.30

.370⁺^–.^.⁰⁰¹¹²⁶

9.40

6.20±0.25

(.244±.010)

1 PIN INDEX

0.51(.020)MIN

4.36(.172)MAX

3.00(.118)MIN

+0.30

0.25±0.05

(.010±.002)

0.46±0.08

(.018±.003)

+0.30

15°MAX

0.99

1.52

–0

7.62(.300)

TYP

.039⁺^–0^.012

.060^–⁺⁰^.012

+0.35

–0.30

.035⁺^–.^.⁰⁰¹¹²⁴

0.89

2.54(.100)

TYP

Dimensions in mm (inches).

C

1994 FUJITSU LIMITED D08006S-2C-3

22

MB3773

■ PACKAGE DIMENSIONS (Continued)

8 pin, Plastic SOP

(FPT-8P-M01)

2.25(.089)MAX

6.35⁺^–0⁰^.^.²²⁰⁵.250 ^–⁺^.^.⁰⁰⁰¹⁸⁰

0.05(.002)MIN

(STAND OFF)

6.80⁺^–0⁰^.^.²⁴⁰⁰

5.30±0.30

7.80±0.40

INDEX

.268⁺^–.^.⁰⁰⁰¹⁸⁶

(.209±.012) (.307±.016)

1.27(.050)

TYP

0.45±0.10

(.018±.004)

0.15⁺^–0⁰^.^.⁰⁰²⁵

.006^–⁺^.^.⁰⁰⁰⁰¹²

0.50±0.20

(.020±.008)

M

Ø0.13(.005)

3.81(.150)REF

Details of "A" part

0.20(.008)

0.50(.020)

0.18(.007)MAX

"A"

0.68(.027)MAX

0.10(.004)

Dimensions in mm (inches).

C

1994 FUJITSU LIMITED F08002S-4C-4

23

MB3773

■ PACKAGE DIMENSIONS (Continued)

8 pin, Plastic SIP

(SIP-8P-M03)

3.26±0.25

(.128±.010)

+0.15

–0.35

19.65

.774 ^–⁺^.^.⁰⁰¹⁰⁴⁶

INDEX-1

6.20±0.25

(.244±.010)

8.20±0.30

(.323±.012)

INDEX-2

+0.30

–0

.039⁺^–0^.012

0.99

4.00±0.30

(.157±.012)

+0.30

–0

1.52

2.54(.100)

TYP

0.50±0.08

(.020±.003)

0.25±0.05

(.010±.002)

.060⁺–0^.012

Dimensions in mm (inches).

C

1994 FUJITSU LIMITED S08010S-3C-2

24

MB3773

FUJITSU LIMITED

For further information please contact:

Japan

FUJITSU LIMITED

Corporate Global Business Support Division

Electronic Devices

KAWASAKI PLANT, 4-1-1, Kamikodanaka

Nakahara-ku, Kawasaki-shi

Kanagawa 211-8588, Japan

Tel: (044) 754-3763

The contents of this document are subject to change without

notice. Customers are advised to consult with FUJITSU sales

representatives before ordering.

Fax: (044) 754-3329

http://www.fujitsu.co.jp/

The information and circuit diagrams in this document presented

as examples of semiconductor device applications, and are not

intended to be incorporated in devices for actual use. Also,

FUJITSU is unable to assume responsibility for infringement of

any patent rights or other rights of third parties arising from the

use of this information or circuit diagrams.

North and South America

FUJITSU MICROELECTRONICS, INC.

Semiconductor Division

3545 North First Street

San Jose, CA 95134-1804, USA

Tel: (408) 922-9000

Fax: (408) 922-9179

FUJITSU semiconductor devices are intended for use in

standard applications (computers, office automation and other

office equipment, industrial, communications, and measurement

equipment, personal or household devices, etc.).

CAUTION:

Customers considering the use of our products in special

applications where failure or abnormal operation may directly

affect human lives or cause physical injury or property damage,

or where extremely high levels of reliability are demanded (such

as aerospace systems, atomic energy controls, sea floor

repeaters, vehicle operating controls, medical devices for life

support, etc.) are requested to consult with FUJITSU sales

representatives before such use. The company will not be

responsible for damages arising from such use without prior

approval.

Customer Response Center

Mon. - Fri.: 7 am - 5 pm (PST)

Tel: (800) 866-8608

Fax: (408) 922-9179

http://www.fujitsumicro.com/

Europe

FUJITSU MIKROELEKTRONIK GmbH

Am Siebenstein 6-10

D-63303 Dreieich-Buchschlag

Germany

Tel: (06103) 690-0

Fax: (06103) 690-122

Any semiconductor devices have inherently a certain rate of

failure. You must protect against injury, damage or loss from

such failures by incorporating safety design measures into your

facility and equipment such as redundancy, fire protection, and

prevention of over-current levels and other abnormal operating

conditions.

http://www.fujitsu-ede.com/

Asia Pacific

FUJITSU MICROELECTRONICS ASIA PTE LTD

#05-08, 151 Lorong Chuan

New Tech Park

Singapore 556741

Tel: (65) 281-0770

If any products described in this document represent goods or

technologies subject to certain restrictions on export under the

Foreign Exchange and Foreign Trade Control Law of Japan, the

prior authorization by Japanese government should be required

for export of those products from Japan.

Fax: (65) 281-0220

http://www.fmap.com.sg/

F9803

FUJITSU LIMITED Printed in Japan

25


型号：	MB3773
厂家：	FUJITSU
描述：	Power Supply Monitor with Watch-Dog Timer 电源监控器与看门狗定时器监控
文件：	总25页 (文件大小：365K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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