MB3793-28APNF - Fujitsu Limited

FUJITSU MICROELECTRONICS

DATA SHEET

2009.12

ASSP

BIPOLAR

POWER-VOLTAGE MONITORING IC

WITH WATCHDOG TIMER

MB3793-28A

■DESCRIPTION

The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer.

A reset signal is output when the pow er is cut or f alls abruptly. When the po wer reco v ers normally after resetting,

a pow er-on r eset signal i s output to microprocessor unit s (MPUs). An inte rnal watchdog time r with tw o inputs for

system operation diagnosis can provide a fail-safe function for various application systems.

■FEATURES

• Precise detection of power voltage fall: ±2.5%

• Detection voltage with hysteresis

• Low power dispersion: ICC = 41 μA (Typ)

• Internal dual-input watchd og timer

• Watchdog timer halt funct ion

• Independently-set watchdog and reset times

■APPLICATION

• Arcade Am usement etc.

Model No. Marking Code Detection voltage

MB3793-28A 3793AR 2.8 V

DS04-27408-1E

MB3793-28A

2DS04-27408-1E

■PIN ASSIGNMENT

■PIN DESCRIPTION

Pin No. Symbol Description

1 RESET Outputs reset pin

2 CTW Sets watchdog timer monitoring time pin

3 CTP Sets power-on reset hold time pin

4 GND Ground pin

CC Power supply pin

6INH

This pin forces the watchd og timer on /off. When this pin is High

level, the watchdog timer is stopped.

7 CK2 Inputs clock 2 pin

8 CK1 Inputs clock 1 pin

RESET

CTW

CTP

GND

CK1

CK2

INH

VCC

(FPT-8P-M02)

(T OP VIEW)

MB3793-28A

DS04-27408-1E 3

■BLOCK DIAGRAM

I1 = 3 μA

..I2 = 30 μA

R1 =

315 kΩ

CTP

To VCC of all blocks

Pulse generator 1

Watchdog

timer

Reference

voltage

generator

To GND of

all blocks

Pulse generator 2

Output circuit Logic circuit

RESET

INH

CTW

CK1

CK2

VCC

GND

Comp.S

−

VREF = 1.24 V

R2 =

240 kΩ

MB3793-28A

4DS04-27408-1E

■BLOCK FUNCTIONS

1. Comp. S

Comp. S is a comparator with hysteresis to compare the reference voltage with a voltage (VS) that is the result

of dividing the power voltage (VCC) by resist ors R1 and R2. When VS falls below 1.24 V, a reset signal is output.

This function enables the MB 37 9 3 to dete ct an ab no rmality within 1 μs when the power is cut or falls abruptly.

2. Output circuit

The output circuit has a comparator to control the reset signal (RESET) output. When the voltage at the CTP

pin for setting the power-on reset hold time exceeds the threshold v oltage, resetting is canceled.

Since the reset (RESET) output buffer has the CMOS orga nization, no pull-up resistor is needed.

3. Pulse generator

The pulse gener ator generates pulses when the v oltage at the CK1 and CK2 input clo ck pins changes from Lo w

level to High level (positive-edge trigger) and exceeds the threshold voltage; it sends the clock signal to the

watchdog timer.

4. Watchdog timer

The w atchdog time r can m onitor tw o cloc k pulses . Short-circuit the CK1 and CK2 cloc k pins to monitor a single

clock pulse.

5. Logic circuit

Logic circuit contr ols charging and discharging of the power -on reset hold time setting capacity (C TP) on a signal

of Comp.S and Watchdog timer.

MB3793-28A

DS04-27408-1E 5

■ABSOLUTE MAXIMUM RATINGS

* : The voltage is based on the ground voltage (0 V).

WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,

temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.

■RECOMMENDED OPERATING CONDITIONS

* : The watchdog timer monitor time range depends on the rating of the setting capacitor.

WARNING: The recommended operating conditions are required in order to ensure the normal operation of

the semiconductor device. All of the device's electrical characteristics are warranted when the

device is operated within these r anges .

Always use semiconductor devices within their recommended operating condition ranges.

Operation outside these ranges may adversely affect reliability and could result in device failure.

No warranty is made with respect to uses, operating conditions, or combinations not represented

on the data sh eet. Users consider ing application outside th e listed conditio ns are advised to contact

their representatives beforehand.

Parameter Symbol Conditions Rating Unit

Min Max

Power supply voltage* VCC ⎯−0.3 +7V

Input voltage*

CK1 VCK1 ⎯

−0.3 VCC + 0.3

( ≤ +7) VCK2 VCK2 ⎯

INH VINH ⎯

Reset output voltage* RESET

VOL

VOH ⎯−0.3 VCC + 0.3

( ≤ +7) V

Reset output current IOL

IOH ⎯−10 +10 mA

Power dissipation PDTa ≤ +85 °C⎯200 mW

Storage temperature Tstg ⎯−55 +125 °C

Parameter Symbol Conditions Value Unit

Min Typ Max

Power supply voltage VCC ⎯1.2 3.3 4.0 V

Reset (RESET) output current IOL ⎯0— + 5 mA

IOH ⎯−5— 0

Power-on reset hold time setting

capacity CTP ⎯0.001 0.1 10 μF

Watchdog-timer monitoring time

setting capacity* CTW ⎯0.001 0.01 1 μF

Operating ambient temperature Ta ⎯−40 +25 +85 °C

MB3793-28A

6DS04-27408-1E

■ELECTRICAL CHARACTERISTICS

1. DC Characteristics

* : This parameter is guaranteed by design, which is not supported by a final test.

(VCC = +3.3 V, Ta = +25°C)

Parameter Symbol Conditions Value Unit

Min Typ Max

Power current ICC1 After exit from reset ⎯41 55 μA

Detection voltage

VSL VCC falling Ta = +25°C 2.73 2.80 2.87 V

Ta = −40 to +85°C 2.69* 2.80 2.91*

VSH VCC rising Ta = +25°C 2.80 2.87 2.94 V

Ta = −40 to +85°C 2.76* 2.87 2.98*

Detection voltage

hysteresis difference VSHYS VSH - VSL 25 70 100 mV

CK input threshold voltage VCIH ⎯0.7* 1.3 1.9 V

VCIL ⎯0.5 1.0 1.5* V

CK input hysteresis VCHYS ⎯0.1* 0.3 0.6* V

INH input voltage VIIH ⎯2.2 ⎯VCC V

VIIL ⎯0⎯0.8 V

Input current

(CK1,CK2,INH) IIH VIH = VCC ⎯01.0μA

IIL VIL = 0 V −1.0 0 ⎯μA

Reset output voltage VOH IRESET = −3 mA 2.8 3.1 ⎯V

VOL IRESET = +3 mA ⎯0.12 0.4 V

Reset-output minimum

power voltage VCCL IRESET = +50 μA⎯0.8 1.2 V

MB3793-28A

DS04-27408-1E 7

2. AC Characteristics

*: The voltage range is 10% to 90% at testing the reset output transition ti me.

(VCC = +3.3 V, Ta = +25°C)

Parameter Symbol Conditions Value Unit

Min Typ Max

Power-on reset hold time tPR CTP = 0.1 μF 30 75 120 ms

Watchdog time r monitoring time tWD CTW = 0.01 μF

CTP = 0.1 μF81624ms

Watchdog timer reset time tWR CTP = 0.1 μF25.59ms

CK input pulse width tCKW ⎯500 ⎯⎯ns

CK input pulse cycle tCKT ⎯20 ⎯⎯μs

Reset (RESET) output transition time Rising tr* CL = 50 pF ⎯⎯500 ns

Falling tf* CL = 50 pF ⎯⎯500 ns

MB3793-28A

8DS04-27408-1E

■TIMING DIAGRAM

1. Basic operation (Positive clock pulse)

CTP

RESET

INH

CTW

CK1

CK2

VSH

VCC

VSL

Vth

(1) (2) (3) (4)(5) (5) (6) (7) (8) (9) (10) (11) (12) (13)

tPR tWD tPR

tWR

tCKW

tCKT

MB3793-28A

DS04-27408-1E 9

2. Basic operation (Negative clock pulse)

CTP

RESET

INH

CTW

CK1

CK2

VSH

VCC

VSL

Vth

tPR tWD tPR

tWR

tCKW

tCKT

(1) (2) (3) (4)(5) (5) (6) (7) (8) (9) (10) (11) (12) (13)

MB3793-28A

10 DS04-27408-1E

3. Single-clock input monitoring (Positive clock pulse)

CTP

RESET

CTW

CK1

Vth

CK2

tWR

tWD

tCKT

tCKW

Note : The MB3793 can monitor only one clock.

The MB3793 checks the clock signal at every other input pulse.

Therefore, set watchdog timer monitor time tWD to the time that allows the MB 37 93

to monitor the period twice as long as the input clock pulse.

MB3793-28A

DS04-27408-1E 11

4. Inhibition operation (Positive clock pulse)

CTP

RESET

INH

CTW

CK1

CK2

VSH

VCC

VSL

Vth

tPR tWD tPR

tWR

tCKW

(1) (2) (3) (4)(5) (5) (6) (7) (11) (8) (9) (10) (12) (13)

tCKT

MB3793-28A

12 DS04-27408-1E

5. Clock pulse input supplementation (Positive clock pulse)

CTW

CK1

CK2

tCKT

tCKW *1

Note : The MB3793 watchdog timer monitors Clock1 (CK1) and Clock2 (CK2) pulses alternately.

When a CK2 pulse is detected after dete cting a CK1 pulse, the monitor ing time se tting capacity

(CTW) switches to charging from discharging.

When two consecutive pulses occu r on one side of this a lternation befo re switching, the second

pulse is ignored.

In the above figure, pulse *1 and *2 are ignored.

MB3793-28A

DS04-27408-1E 13

■OPERATION SEQUENCE

1. Positive clock pulse input

Refer to “1. Basic operation (positive clock pulse)” under “■ TIMING DIA GRAM”.

2. Negative clock pulse input

Refer to “2. Basic operation (negative clock pulse)” under “■ TIMING DIAGRAM”.

The MB3793 oper ates in the same way whether it inputs positive or negative pulses.

3. Single-clock input monitoring

To use the MB3793 while monitoring only one clock, connect clock pins CK1 and CK2.

Although the MB3793 operates basically in the same way as when monitoring two clocks, it monitors the clock

signal at every other input pulse.

Refer to “3. Single-clock input monitoring (positive clock pulse)” under “■ TIMING DIAGRAM”.

4. Description of Operations

The numbers given to the following items correspond to numbers (1) to (13) used in “■ TIMING DIAGRAM”.

(1) The MB3793 outputs a reset signal when the supply voltage (VCC) reaches about 0.8 V (VCCL)

(2) If VCC reaches or e xceeds the rise-time detecte d volta ge VSH, the MB3793 sta rts charging the po wer-on

reset hold time setting capacitor C TP. At this time , the output remains in a reset state. The VSH value is

2.87 V (Typ) .

(3) When CTP has been charged for a certain period of time TPR (until the CTP pin volt ag e exceeds the

threshold voltage (Vth) after the start of charging), the MB3793 cancels the reset (setting the RESET pin

to “H” level from “L” level).

The Vth valu e is about 2.4 V with VCC = 3.3 V

The power-on reset hold time tPR is set with the following equation:

tPR (ms) A × CTP (μF)

The value of A is about 750 with VCC = 3.3 V a nd about 700 with VCC = 3.0 V. The MB3793 also starts

charging the watchdog ti me r moni to r tim e set tin g ca pacito r (CTW).

(4) When the voltage at the watchdog timer monit or time setting pin CTW reaches the “H” level threshold

voltage VH, the CTW switches from the charge state to the discharge state.

The value of VH is always about 1.24 V regardless of the detected voltage.

(5) If the CK2 pin inputs a clock pulse (positiv e edge trigger) when the CTW is being discharged in the

CK1-CK2 order or simultaneously, the CTW switches from the discharge state to the charge stat e.

The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses with the

system logic circu it op eratin g no rmally.

(6) If no clock pulse is fed to the CK1 or CK2 pin within the watchdog timer monitor time tWD due to some

prob lem with the system logic circuit, th e CTW pin is set to the “L” le vel thre shold volta ge VL or less and

the MB3793 outputs a reset signal (setting the RESET pin to “L” level from “H” level).

The value of VL is always about 0.24 V regardless of the detected voltage.

The watchdog timer monitor time tWD is set with the following equation:

tWD (ms) B × CTW (μF) + C × CTP (μF)

The v alue of B is hardly affected by the po wer supply v olt age; it is about 1600 with VCC = 3.0 V to 3.3 V.

The value of C is 0.

F or this reason:

tWD (ms) B × CTW (μF)

MB3793-28A

14 DS04-27408-1E

(7) When a certain period of time tWR has passed (un til the CTP pin v oltage reaches or exceeds Vth again

after rech arging the CTP), the MB3 793 cancels the reset signal and starts operating the w atchdog timer.

The watchdog timer monitor reset time tWR is set with the following equation:

tWR (ms) D × CTP (μF)

The value of D is 55 with VCC = 3.3 V and about 50 with VCC = 3.0 V.

The MB3793 repeat s operation s (4) and (5) as long a s the CK1/CK2 pin input s cloc k pulses. If no cloc k

pulse is input, the MB 37 93 rep e at s ope rations (6 ) an d (7 ).

(8) If VCC is lowered to the fall-time detected voltage (VSL) or less, the CTP pin voltage decreases and the

MB3793 outputs a reset signal (setting the RESET pin to “L” level from “H” level).

The value of VSL is 2.80 V (Typ) .

(9) When VCC reaches or exceeds VSH again, the MB3793 starts charging the CTP.

(10) When the CTP pin voltage reaches or exceeds Vth, the MB3793 cancels the reset and restarts operating

the watchdog timer. It repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses.

(11) Making the inhibit pin active (setting the INH pin to “H” from “L”) forces the watchdog timer to st op

operation.

This stops only the watchdog timer, leaving the MB3793 monitoring VCC (operations (8) to (10)).

The watchdog timer remains inactiv e unless the inhibit input is canceled.

The inhibition (INH) pin must be connecting a voltage of more low impedance, to evade of the noise.

(12) Canceling the inhibit input (setting the INH pin to “ L” from “H”) restarts the watchdog timer.

(13) The reset signal is output when the power supply is turned off to set VCC to VSL or less.

1. Equation of time-setting capacitances (CTP and CTW) and set time

tPR [ms] A × CTP [μF]

tWD [ms] B × CTW [μF] + C × CTP [μF]

However, when CTP/CTW 10 or less, tWD [ms] B × CTW [μF]

tWR [ms] D × CTP [μF]

Values of A, B, C, and D

Note: The width of value of tPR, tWD and tWR be comes the same r atio as width (Min , Max) of eac h

specification value.

2. Example (when CTP = 0.1 μF and CTW = 0.01 μF)

A B C D Remark

750 1600 0 55 VCC = 3.3 V

700 1600 0 50 VCC = 3.0 V

time

(ms)

Symbol VCC = 3.3 V VCC = 3.0 V

tPR 75 70

tWD 16 16

tWR 5.5 5

MB3793-28A

DS04-27408-1E 15

■TYPICAL CHARACTERISTICS

(Continued)

20 0 1.0 2.0 3.0 4.0

MB3793VINH VCC

(VINH = 0 V)

2.6

-20-40 0 +20 +40 +60 +80 +100 +120

2.7

2.8

2.9

3.0

3.1

VSH

VSL

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.0

3.1

3.3

3.2

0−1−2−3−4−5−6−7−8−9−10

at VCC = 3.3 V

Ta = +25 °C

Ta = +85 °C

Ta = −40 °C

100

400

300

200

500

600

012345678910

at VCC = 3.3 V

Ta = +25 °C

Ta = +85 °C

Ta = −40 °C

ICC - VCC characteristics

Power current

ICC (μA)

Power voltage VCC (V)

Watchdog timer monitoring

Detection voltage

VSH and VSL (V)

Operating ambient temperature Ta (°C)

Reset output curren t I RESET (mA)

Reset output volta g e

V RESET (V)

V RESET - I RESET characteristics

(P-MOS side) V RESET - I RESET characteristics

(N-MOS side)

Reset output voltage

V RESET (V)

Reset output current I RESET(mA)

VSH, VSL - Ta characteristics

fCK= 1 kHz, Duty = 10%

VL = 0 V/VH = VCC

CTW = 0.01 μF, CTP = 0.1 μF

MB3793-28A

16 DS04-27408-1E

(Continued)

001234

Ta = +85 °C

Ta = +25 °C

Ta = -40 °C

-40 -20 0 +20 +40 +60 +80 +100 +120

100

120

140

160

at VCC = 3.3 V

−40 −20 0 +20 +40 +60 +80 +100 +120

at VCC = 3.3 V

−40 −20 0 +20 +40 +60 +80 +100 +120

at VCC = 3.3 V

VRESET - VCC characteristics

Power voltage VCC (V)

Reset output voltage

VRESET (V)

Pull-up resistance : 100 kΩ

tPR - Ta characteristics

Operating ambient temperature Ta (°C)

Power-on reset hold time

tPR (ms)

tWR - Ta characteristics tWD - Ta characteristics

Operating ambient temperature Ta (°C) Operating ambient t emperature Ta (°C)

Watchdog timer reset time

tWR (ms)

Watchdog timer monitoring time

tWD (ms)

MB3793-28A

DS04-27408-1E 17

(Continued)

104

103

102

101

10 −1

10−410−310−210−1110

1102

Ta = −40 °C

at VCC = 3.3 V

Ta = +25 °C

Ta = +85 °C

103

102

101

10−1

10−410−310−210−1110

101

10−2

Ta = −40 °C

at VCC = 3.3 V

Ta = +25 °C

Ta = +85 °C

103

102

101

10−1

10−410−310−210−1110

10−5

Ta = −40 °C

Ta = +25 °C

Ta = +85 °C

at VCC = 3.3 V

tPR - CTP characteristics tWR - CTP characteristics

Power-on reset hold time

tPR (ms)

Power-on reset hold time setting capacitance

CTP (μF) Power-on reset hold time setting capacitance

CTP (μF)

tWD - CTW characteristics

Watchdog timer monitoring time

tWD (ms)

Watchdog timer monitoring time setting capacitance

CTW (μF)

Watchdog timer reset time

tWR (ms)

MB3793-28A

18 DS04-27408-1E

■APPLICATION EXAMPLE

1. Supply voltage monitor and watchdog timer

(1) 1-clock monitor

(2) 2-clock monitor

647

RESET VCC

RESET

GND

CTW*CTP*

VCC

CTW

CTP CK1

CK2INH

MB3793

* : Use a capacitor with less leakage current.

Microprocessor

VCC

CTW*CTP*

GND

INH GND

VCC

CTP

CTW RESET

CK1

CK2

RESET

GND

VCC RESET

GND

VCC

MB3793

* : Use a capacito r with less leakage current.

Microprocessor1 Microprocessor2

MB3793-28A

DS04-27408-1E 19

2. Supply voltage monitor and watchdog timer stop

3. Setting of compulsory reset

GND

CTW*CTP*

VCC

RESET VCC

GND

RESET VCC

GND

HALT

647

1RESET

GND

VCC

INH

CTW

CK1

CK2

CTP

MB3793

* : Use a capacitor with less leakage current.

Microprocessor1 Microprocessor2

647

RESET VCC

RESET

GND

CTW*CTP*

RESIN

10 kΩ

VCC

CTW

CTP CK1

CK2INH

MB3793

* : Use a capacitor with le ss leakage current.

It is possible for the RESET pin to fix to “L” if the CTP pin is short-circuited to GND.

Take care not to change the v alue of the CTP capacity because of the influence of Tr that

is used at the time.

Microprocessor

MB3793-28A

20 DS04-27408-1E

■USAGE PRECAUTION

1. Do not configure the IC over the maximum ratings

If the lC is used over the maximum ratings, the LSl may be permanently damaged.

It is preferable for the device to normally operate within the recommended usage conditions. Usage outside of

these conditions can have a bad effect on the reliability of the LSI.

2. Use the devices within recommended operating conditions

The recommended operating conditions are under which the LSl is guaranteed to operate.

The electrical ratings are guaranteed when the device is used within the recommended operating conditions

and under the conditions stated for each item.

3. Printed circuit board ground lines should be set up with consideration for common

impedance

4. Take appropriate measures against static electricity

• Containers f or se miconductor mate rials should hav e an ti-sta tic pro tec tion o r be ma de of co nduct ive material.

• After mounting, printed circuit boards should be stored and shippe d in conductive bags or containers.

• W ork platforms, tools, and instruments should be properly grounded.

• W orking personnel should be grounded with resistance of 250 kΩ to 1 MΩ between body and ground.

5. Do not apply negative voltages

The use of neg at ive vo lta ge s be low –0.3 V may create parasitic transistors on LSI lines, which can cause

malfunctions.

MB3793-28A

DS04-27408-1E 21

■ORDERING INFORMATION

Part number Package Remarks

MB3793-28APNF 8-pin plastic SOP

(FPT-8P-M02)

MB3793-28A

22 DS04-27408-1E

■RoHS Compliance Information of Lead (Pb) Free version

The LSI products of Fujitsu Microelectronics with “E1” are compliant with RoHS Directive , and has observed

the standard of lead, cadmium, mercury, Hexa v alent chromium, polybrominated biphenyls (PBB) , and polybro-

minated diphenyl ethers (PBDE) .

The product that conforms to this standard is add ed “E1” at the end of the part number.

■LABELING SAMPLE (Lead free version)

■MARKING FORMAT (Lead Free version)

2006/03/01

ASSEMBLED IN JAPAN

QC PASS

(3N) 1MB123456P-789-GE1

1000

(3N)2 1561190005 107210

1,000

PCS

0605 - Z01A

1000

1/1

1561190005

MB123456P - 789 - GE1

Lead-free mark

JEITA logo JEDEC logo

The part number of a lead-free product has

the trailing characters “E1”. “ASSEMBLED IN CHINA” is printed on the label

of a product assembled in China.

3793AR

XXXX

E1 XXX

Lead Free version

SOP-8

(FPT-8P-M02)

MB3793-28A

DS04-27408-1E 23

■MB3793-28APNF

RECOMMENDED CONDITIONS OF MOISTURE SENSITIVITY LEVEL

[Temperature Profile for FJ Standard IR Reflow]

(1) IR (infrar ed reflow)

(2) Manu al soldering (partial heating method)

Conditions : Temperature 400 °C Max

Times : 5 s max/pin

Item Condition

Mounting Method IR (infrared reflow) , Manual soldering (partial heating method)

Mounting times 2 times

Storage period

Before opening Please use it within two years after

Manufacture.

From opening to the 2nd

reflow Less than 8 days

When the storage period after

opening was exceeded Please processes within 8 days

after baking (125 °C, 24 H)

Storage conditions 5 °C to 30 °C, 70%RH or less (the lowest possible humidity)

260 °C

(e)

(d')

(d)

255 °C

170 °C

190 °C

RT (b)

(a)

(c)

Note : Temperature : the top of the package body

(a) Temperatu re Increase gradient : Aver age 1 °C/s to 4 °C/s

(b) Preliminary heating : Temperature 170 °C to 190 °C, 60s to 180s

(d) Peak temperature : Temperature 260 °C Max; 255 °C or more, 10s or less

(d’) Main heating : Temperature 230 °C or more, 40s or less

Temperature 225 °C or more, 60s or less

Temperature 220 °C or more, 80s or less

(e) Cooling : Natural cooling or forced cooling

H rank : 260 °C Max

Main heating

MB3793-28A

24 DS04-27408-1E

■PACKAGE DIMENSIONS

Please check the latest package dimension at the following URL.

http://edevice.fujitsu.com/package/en-search/

8-pin plastic SOP Lead pitch 1.27 mm

Package width

package length

3.9 × 5.05 mm

Lead shape Gullwing

Sealing method Plastic mold

Mounting height 1.75 mm MAX

Weight 0.06 g

8-pin plastic SOP

(FPT-8P-M02)

2002 FUJITSU LIMITED F08004S-c-4-7

1.27(.050)

3.90±0.30 6.00±0.40

.199 –.008

+.010

–0.20

+0.25

5.05

0.13(.005)

(.154±.012) (.236±.016)

0.10(.004)

0.44±0.08

(.017±.003)

–0.07

+0.03

0.22

.009 +.001

–.003

0.40(.016) "A" 0~8

0.25(.010)

(Mounting height)

Details of "A" part

1.55±0.20

(.061±.008)

0.50±0.20

(.020±.008)

0.60±0.15

(.024±.006)

0.15±0.10

(.006±.004)

(Stand off)

0.10(.004)

Dimensions in mm (inc hes).

Note: The values in parentheses are reference values.

Note 1) *1 : These dimensions include resin protrusion.

Note 2) *2 : These dimensions do not include resin protrusion.

Note 3) Pins width and pins thickness include plating thickness.

Note 4) Pins width do not include tie bar cutting remainder.

MB3793-28A
DS04-27408-1E   25
■CONTENTS
page
-DESCRIPTION  .................................................................................................................................................... 1
-FEATURES  .......................................................................................................................................................... 1
-APPLICATION  ..................................................................................................................................................... 1
-PIN ASSIGNMENT   ............................................................................................................................................. 2
-PIN DESCRIPTION   ............................................................................................................................................ 2
-BLOCK DIAGRAM  .............................................................................................................................................. 3
-BLOCK FUNCTIONS   ......................................................................................................................................... 4
-ABSOLUTE MAXIMUM RATINGS  ................................................................................................................... 5
-RECOMMENDED OPERATING CONDITIONS   ............................................................................................ 5
-ELECTRICAL CHARACTERISTICS  .............. .......................... ................................................... ..................... 6
-TIMING DIAGRAM  .............................................................................................................................................. 8
-OPERATION SEQUENCE   ........... ......................... ......................... ................................................... ................ 13
-TYPICAL CHARACTERISTICS  ............................................. ................................................... ........................ 15
-APPLICATION EXAMPLE  ................................................................................................................................. 18
-USAGE PRECAUTION  ...................................................................................................................................... 20
-ORDERING INFORMATION  ...................................................................... .................................................. ..... 21
-RoHS Compliance Information of Lead (Pb) Free version  ........................................................................... 22
-LABELING SAMPLE (Lead free version)  ............... ................................................... ......................... ............. 22
-MARKING FORMAT (Lead Free version)  ....................................................................................................... 22
-MB3793-28APNF RECOMMENDED CONDITIONS OF MOISTURE SENSITIVITY LEVEL  .......... ....... 23
-PACKAGE DIMENSIONS  .................................................................................................................................. 24

MB3793-28A

26 DS04-27408-1E

MEMO

MB3793-28A

DS04-27408-1E 27

MEMO

MB3793-28A

FUJITSU MICROELECTRONICS LIMITED

Shinjuku Dai-Ichi Seimei Bldg., 7-1, Nishishinjuku 2-chome,

Shinjuku-ku, Tokyo 163-0722, Japan

Tel: +81-3-5322-3329

http://jp.fujitsu.com/fml/en/

F or further information please contact:

Nort h and South America

FUJITSU MICROELECTRONICS AMERICA, INC.

1250 E. Arques Avenue, M/S 333

Sunnyvale, CA 94085-5401, U.S.A.

Tel: +1-408-737-5600 Fax: +1-408-737-5999

http://www.fma.fujitsu.com/

Europe

FUJITSU MICROELECTRONICS EUROPE GmbH

Pittlerstrasse 47, 63225 Langen, Germany

Tel: +49-6103-690-0 Fax: +49-6103-690-122

http://emea.fujitsu.com/microelectronics/

Korea

FUJITSU MICROELECTRONICS KOREA LTD.

206 K osmo Tower Building, 1002 Daechi-Dong,

Gangnam-Gu, Seoul 135-280, Republic of Korea

Tel: +82-2-3484-7100 Fax: +82-2-3484-7111

http://kr.fujitsu.com/fmk/

Asia Pacific

FUJITSU MICROELECTRONICS ASIA PTE. LTD.

151 Lorong Chuan,

#05-08 New Tech Park 556741 Singapore

Tel : +65-6281-0770 Fax : +65-6281-0220

http://www.fmal.fujitsu.com/

FUJITSU MICROELECTRONICS SHANGHAI CO., LTD.

Rm. 3102, Bund Center, No.222 Yan An Road (E),

Shanghai 200002, China

Tel : +86-21-6146-36 88 Fax : +86-21-6335-1605

http://cn.fujitsu.com/fmc/

FUJITSU MICROELECTRONI CS PACIFIC ASIA LTD.

10/F., World Commerce Centre, 11 Canton Road,

Tsimshatsui, Kowloon, Hong Kong

Tel : +852-2377-0226 Fax : +852-2376-3269

http://cn.fujitsu.com/fmc/en/

Specifications are subject to change without notice. For further information please contact each office.

The contents of this document are subject to change without notice.

Customers are advised to consult with sales representatives before ordering.

The informatio n, such as desc riptions of function and application circuit examples, in this document a re present ed solely for the purpose

of reference to show examples of operations and uses of FUJITSU MICROELECTRONICS device; FUJITSU MICROELECTRONICS

does not warrant proper operation of the device with respect to use based on such information. When you develop equipment incorporating

the device based on such information, you must assume any responsibility arising out of such use of the information.

FUJITSU MICROELECTRONICS assumes no liability for any damages whatsoever arising out of the use of the information.

Any information in this document, including descriptions of functio n and schematic diagrams, shall not be construed as license of the use

or exercise of any intellectual property right, such as patent right or copyright, or any other right of FUJITSU MICROELECTRONICS

or any third party or does FUJITSU MICROELECTRONICS warrant non-infringement of any third-party's intellectu al proper ty right or

other right by using such information. FUJITSU MICROELECTRONICS assumes no liability for any infringement of the intellectual

property rights or other rights of third parties which would result from the use of information contained herein.

The products described in this document are designed, developed and manufactured as contemplated for general use, including without

limitation, ordinary industrial use, general office use, personal use, and househo ld use, but are not designed, developed and manufactured

as contemplated (1) for use accompanying fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to

the public, and could lead directly to death, personal injury, severe p hysical damage or other loss (i.e., nuclear reaction control in nuclear

facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon

system), or (2) for use requiring extremely high reliability (i.e., submersible repeater and artificial sate llite).

Please note that FUJITSU MICROELECTR ONICS will not be liable against you and/or any third party for any claims or damages arising

in connection with above-mentioned uses of the products.

Any semiconductor devices have an inherent chance 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 redund ancy, fire protection, and prevention of over-current

levels and other abnormal operating conditions.

Exportation/release of any products described in this document may require necessary procedures in accordance with the regulations of

the Foreign Exchange and Foreign Trade Control Law of Japan and/or US export control laws.

The company names and brand names herein are the trademarks or registered trademarks of their respective owners.

Edited: Sales Promotion Department