HIT HA16129FPJ Datasheet

HA16129FPJ

Single Watchdog Timer

Description

The HA16129FPJ is a watchdog timer IC that monitors a microprocessor for runaway. In addition to the
watchdog timer function, the HA16129FPJ also provides a function for supplying a high-precision
stabilized power supply to the microprocessor, a power on reset function, a power supply voltage
monitoring function, and a fail-safe function that masks the microprocessor outputs if a runaway is
detected.

Functions

• Watchdog timer (WDT) function

Monitors the P-RUN signal output by the microprocessor, and issues an auto-reset (RES) signal if a
microprocessor runaway is detected.

• Stabilized power supply

Provides power to the microprocessor.

• Power on and clock off functions

The power on function outputs a low level signal to the microprocessor for a fixed period when power
is first applied.

The clock off function outputs a RES signal to the microprocessor a fixed period after a runaway
occurs.

• Power supply monitoring function

When the reference voltage (Vout) falls and becomes lower than the NMI detection voltage (4.63V,
Typ) or the STBY detection voltage (3.0V Typ), this function outputs either an NMI signal or an STBY
signal, respectively. Note that NMI detection can be set to monitor either VCC or Vout.

• OUTE function*1 (fail-safe function)

Outputs a signal used to mask microprocessor outputs when a microprocessor runaway has been
detected.

• RES delay function

Sets the delay between the time the NMI signal is output and the time the RES signal is output.

• Protection functions

The HA16129FPJ incorporates both Vout overvoltage prevention and current limiter functions.

Note: 1. OUTE function: OUTE is an abbreviation for output enable.

HA16129FPJ

Features

• High-precision output voltage: 5.0V ± 1.5%

• The WDT supports both frequency and duty detection schemes.

• High-precision power supply monitoring function: 4.625V ± 0.125V

• Built-in OUTE function

• All functions can be adjusted with external resistors and/or capacitors.

Pin Arrangement

P-RUN

Rf

Cf
R
C

R

C

RES

GND

Voadj

OUTE

20

STBY1
STBYadj

2
3
4

R

5

R

6

T

7
8
9
10

(Top view)

19
18
17
16
15
14
13
12
11

RES

NMI

NMIadj
NMIsns
V

OUT

CONT
CS
V

CC

2

Block Diagram

HA16129FPJ

To microprocessor
(or other device)

V

CC

11

CS CONT

12

13

14

V

OUT

power supply
connections

STBYadj

To Vout

NMIsns

NMIadj

R

C

P-RUN

3.3k

–
+

19

31.2k

36.8k

71k

1.5V

STBY detection
block

15

2k

80k

70k

16

3.3k

–
+

1.18V

25k

NMI detection

T

block

6

150mV

–+

Overcurrent
detection
block

STBY

Q RSRES

tON detection
block

1.24V
–

+

Regulator block

–
+

OUTE
block

Voadj

9

Overvoltage
detection
block

STBY

20
17

NMI

3.3k
10

QRS

OUTE

5

R

If*16

Cf

3

1

If/6

QRS

NMI

–

–

+

–

+

WDT block

I

R

IR*4/3

33k

19k

8.4k

20k

RES block

3.3k

+
–

+

18

7

RES

C

RES

–

8

GND

2V

I

R

4

R

R

If

Delay circuit block

2

Rf

Note: The current, voltage, and resistor values listed in the diagram are reference values.

: Connect to Vout

3

HA16129FPJ

Pin Function

Related
Function

Pin
No. Symbol Function

WDT. 1 P-RUN Watchdog timer pulse input. The auto-reset function is controlled by the

duty cycle or frequency of this input pulse signal.

2 Rf The resistor connected to this pin determines the current that flows in the

Cf pin capacitor. Use the resistor value from 100 kΩ to 500 kΩ

3 Cf The current determined by the Rf pin charges the Cf capacitor and the

potential on this pin determines the watchdog timer frequency band.

tRH, tRL, t

4RRThe resistor connected to this pin determines the current that flows in the

OFF

C

pin capacitor. Use the resistor value from 100 kΩ to 500 kΩ

R

5CRThe current determined by the RR pin charges the capacitor CR and the

potential on this pin controls the RES function (toff, t

t

ON

6RTThe resistor RT, which determines only the time tON for the RES function is

, and tRL).

RH

connected to this pin. This resistor determines the current that charges the

tr, t

RES

7C

RES

capacitor C
The current determined by the Rf pin charges the capacitor C

RES delay times (Tr and T

for the time tON. Use the resistor value from 100 kΩ to 500 kΩ

R

, and the

) are determined by the potential of this

RES

RES

capacitor.
— 8 GND Ground
Vout 9 Voadj Insert the resistor Roadj if fine adjustment of the regulator output voltage

Vout is required. Leave this pin open if Vout does not need to be changed.
Output 10 OUTE Output for the OUTE function
Power

11 V

CC

Power supply
supply

Current
limiter

12 CS Current limiter current detection. Connect the overcurrent detection

resistor between the CS pin and the V

short this pin to V

. Also, connect this pin to the emitter of the external

CC

transistor. (This function can not operate when V

pin. If this function is not used,

CC

< 2 V)

OUT

Vout 13 CONT Connect this pin to the base of the external transistor.

14 V

OUT

Provides the regulator output voltage and the IC internal power supply.

Connect this pin to the collector of the external transistor.
NMI 15 NMIsns This pin senses the NMI detection voltage. If VCC is to be detected,

connect this pin to the V

required), and if Vout is to be detected, connect this pin to the V

pin (however, note that an external resistor is

CC

OUT

pin.

16 NMIadj Insert a resistor if fine adjustment of the NMI detection voltage is required.

Leave this pin open if fine adjustment is not required.
Output 17 NMI NMI output
Output 18 RES RES output
STBY 19 STBYadj Insert a resistor if fine adjustment of the STBY detection voltage is

required. Leave this pin open if fine adjustment is not required.
Output 20 STBY STBY output

4

HA16129FPJ

Functional Description

This section describes the functions provided by the HA16129FPJ. See the section on formulas for details
on adjustment methods.

Regulator Block

Vout Voltage
This IC provides a stabilized 5V power supply by controlling the base current of an external transistor. The
largest current (the maximum CONT pin current) that can be drawn by the base of this external transistor is
20mA. Also note that the Vout output is also used for the power supply for this IC’s internal circuits.

Current Limiter Block

When a current detection resistor (RCS) is connected between the VCC pin and the CS pin, and the voltage
between these pins exceeds the VCS voltage (150mV Typ), the CONT pin function turns off and the output
voltage supply is stopped. This function can not work when V

Output Voltage (Vout) Adjustment

The output voltage can be adjusted by connecting an external resistor at the output voltage adjustment pin
(Voadj). However, if for some reason the voltage on this Vout line increases and exceeds the voltage
adjustment range (7V Max), the CONT pin function turns off and the output voltage supply is stopped.

OUT

< 2V.

Refer to the timing charts in conjunction with the following items.

LVI (Low Voltage Inhibit)

NMI Detection Voltage
This function monitors for drops in the power-supply voltage. This function can be set up to monitor either
VCC or Vout. When Vout is monitored, a low level is output from the NMI pin if that voltage falls under the
detection voltage (4.63V Typ). Then, when the power-supply voltage that fell rises again, the NMI pin will
output a high level. Note that this function has a fixed hysteresis of 50mV (Typ). The monitored power
supply is selected by connecting the NMIsns pin either to the VCC pin or to the V

pin. When detecting

OUT

VCC, an external adjustment resistor is required.)

The detection voltage can also be adjusted with the NMIadj pin.

STBY Detection Voltage
This function monitors for drops in the Vout voltage. It monitors the Vout voltage, and outputs a low level
from the STBY pin if that voltage drops below the detection voltage (3.0V Typ). Then, when the power­supply voltage that fell rises again, the STBY pin will output a high level. Note that this function has a
fixed hysteresis of 1.35V (Typ).

The detection voltage can also be adjusted with the STBYadj pin.

5

HA16129FPJ

Function Start Voltage

This is the minimum required Vout voltage for the RES, NMI, STBY, and OUTE output pin functions to
start operating. It is stipulated as the voltage that Vout must reach after power is first applied for these pins
to output a low level.

Hysteresis

This is the difference between the LVI function detection voltage when the power-supply voltage drops,
and the clear (reset) voltage when the power-supply voltage rises.

(V

= V

' – V

; V

= V

HYSN

NMI

NMI

HYSS

STBY

' – V

OUTE Function

When a microprocessor is in the runaway state, its outputs are undefined, and thus it is possible that the
outputs may be driven by incorrect signals. This function is used to mask such incorrect microprocessor
outputs. When the WDT function recognizes normal operation (when the RES output is high), the OUTE
output will be held high. When the WDT function recognizes an abnormal state and an auto-reset pulse is
output from the RES pin, the OUTE output will be held low. Thus microprocessor outputs during
microprocessor runaway can be masked by taking the AND of those outputs and this signal using external
AND gates.

STBY

)

The OUTE output will go high when the CR pin voltage exceeds VthHcr2, and will go low when that
voltage falls below VthLcr.

There are limitation that apply when the OUTE function is used. Refer to the calculation formulas item for
details.

RES Function

t

RH

This period is the length of the high-level output period of the RES pulse when the P-RUN signal from the
microprocessor stops. This is the time required for the CR potential to reach VthLcr from VthHcr1.

t

RL

This period is the length of the low-level output period of the RES pulse when the P-RUN signal from the
microprocessor stops. This is the time required for the CR potential to reach VthHcr1 from VthLcr.

t

OFF

This is the time from the point the P-RUN signal from the microprocessor stops to the point a low level is
output from the RES pin. During normal microprocessor operation, the potential on the CR pin will be
about Vout – 0.2V (although this value may change with the P-RUN signal input conditions, so it should be
verified in the actual application circuit) and t

is the time for the CR pin potential to reach VthLcr from

OFF

that potential.

6

HA16129FPJ

t

ON

tON is the time from the point the NMI output goes high when power is first applied to the point the RES
output goes low. tON is the time for the potential of the CR pin to reach VthHcr1 from 0V.

tr
The time tr is the fixed delay time between the point the NMI output goes from low to high after the power­supply voltage comes up to the point RES goes from low to high. The time tr is the time for the CRES pin
potential to fall from the high voltage (about 1.9V) to Vthcres.

t

RES

The time t
power-supply voltage falls to the point RES goes from high to low. The time t
potential to rise from 0V to Vthcres.

WDT Function

This function determines whether the microprocessor is operating normally or has entered a runaway state
by monitoring the duty or frequency of the P-RUN signal. When this function recognizes a runaway state,
it outputs a reset pulse from the RES pin and sets the OUTE pin to low from high. It holds the RES and
OUTE pins fixed at high as long as it recognizes normal microprocessor operation.

is the fixed delay time between the point the NMI output goes from high to low when the

RES

is the time for the C

RES

RES

pin

In this function, the potential of the Cf capacitor is controlled by the P-RUN signal. This Cf pin potential
charges the capacitor CR that controls the reset pulse to be between VthLcf and VthHcf. The judgment as
to whether or not the microprocessor is operating normally, is determined by the balance between the
charge and discharge voltage on the capacitor CR at this time.

7

HA16129FPJ

Calculation Formulas

Item Formula Notes

Reference
voltage

Vout = 1.225 1 +

(

R1, R2; kΩ

37 // R1
12 // R2

While the Vout voltage will be 5 V ±1.5% when the

(

Voadj pin is open, the circuit shown here should be
used to change the Vout voltage externally.

R1

R2

Current
limiter
voltage

V

(150 mV Typ) < IL · R

CS

CS

VCCCS Vout

Voadj

When this function operates, the base current to the
external transistor connected to the CS pin stops and
the Vout output is lowered.

R

CSIL

VCCCS Vout

OVP — This function prevents the microprocessor from being

damaged if the Vout voltage is inadvertently increased
to too high a level. The OVP detection voltage is fixed.

tRH, t

t

ON

RL

tRH

= 3.3 × C

t

= 1.1 × CR · R

RL

R

· R

tON = 1.1 × CR · R

R
R

T

These determine the reset pulse frequency and duty.

t

RL

RES

t

RH

Sets the time from the rise of the NMI signal to the point
the RES output is cleared.

NMI

t

RES

t

t

OFF

= 6.5 × CR · R

OFF

R

Sets the time from the point the P-RUN pulse stops to

ON

the point a reset pulse is output.

P-RUN

RES

toff

8

Calculation Formulas (cont)

Item Formula Notes

V

STBY

V

NMI

(Vout
detection)

V

= 1.48 ×

STBY

V

= 1.2 × 1 +

NMI

R1, R2; kΩ

67.6

(

29.5 + 36.2 // R1

R1 // 73

(

R2 // 25

(

The voltage at which the STBY signal is output when

+ 1

(

Vout falls. The STBY detection voltage can be adjusted
by connecting a resistor between the STBYadj pin and
ground (R3). However, the STBY recovery voltage
cannot be adjusted.

Vout

STBYadj

R1

The voltage at which the NMI signal is output when
Vout falls. (When NMIsns is connected to Vout.)

The NMI detection voltage can be adjusted by
connecting resistors between the NMIadj pin and Vout
(R1), and between the NMIadj pin and ground (R2).

Vout

NMIsns

R2

NMIadj

R1

STBY

NMI

HA16129FPJ

V

STBY

Vout

STBY

V

Vout

NMI

NMI

V

STBY

t

V

NMI

'

'

V

NMI

(V

CC

detection)

OUTE

V

= 4.62 ×

NMI

(

R2 // 97.1

Recovery voltage
V

= 4.68 ×

NMI

(

R2 // 45.5

R1, R2; kΩ

C

× RR > 19.3 × Cf × Rf

R

R1

R1

+ 1

+ 1

GND

The voltage at which the NMI signal is output when V

(

falls. (When NMIsns is connected to VCC.)
The NMI detection voltage can be adjusted by

connecting resistors between the NMIsns pin and V

(

(R1), and between the NMIsns pin and ground (R2).

R1

NMIsns

R2

VCCCS

GND

Vout

NMI

V

CC

NMI

If the OUTE function is used, the relationship shown at
the left must be fulfilled to assure that pulses are not
incorrectly generated in this output when a
microprocessor runaway state is detected.

t

CC

CC

V

'

V

NMI

NMI

t

9

HA16129FPJ

Calculation Formulas (cont)

Item Formula Notes

WDT.

0.31 × (Du – 24)

=

f

Line1

f

= 24% (fixed)

Line2

f

=

Line3

f

= 99%

Line4

Cf · Rf

0.024

Cf · Rf

The relationship between
f

and f

Line1

f

Line1

Line3

= f

× 12.9 (Du – 24)

Line3

Du: The P-RUN signal duty cycle

t

t

L

t

H

H

Du = × 100

tH + t

L

The WDT function judges whether the P-RUN pulse
signal is normal or not. If the WDT function judges the
P-RUN pulse signal to be abnormal, it outputs a reset
signal. The normal range is the area enclosed by f
f

in the figure.

Line4

f

Line1

f

Frequency

Normal

operation

area

Line2

f

Line3

f

Line4

Line1

to

Duty

10

Timing Charts

Whole system timing chart

V

CC

V

OUT

STBY

NMI

V

STBY

HA16129FPJ

V

'

V

NMI

NMI

'

V

STBY

RES

OUTE

P-RUN

t

ON

t

RL

t

OFF

t

RES

t

RH

tr

t

RES

Microprocessor

runaway

11

HA16129FPJ

WDT. timing chart

V

OUT

P-RUN

C

RES

OUTE

LVI timing chart

V

CC

Normal
operation

Cf

R

VthHcr1

VthLcr

(5 V)

High-frequency
runaway

t

OFF

t

RH

VthHcr2

Low-frequency runaway

VthHcf

VthLcf

t

RL

12

V

OUT

STBY

NMI

C

RES

OUTE

C

RES

&

V

R

STBY

V

'

NMI

'

V

NMI

V

STBY

tr

t

ON

t

RES

Vthcres

HA16129FPJ

Absolute Maximum Ratings (Ta = 25°C)

Item Symbol Rating Unit

Power supply voltage V
CS pin voltage V

CC

CS

CONT pin current Icont 20 mA
CONT pin voltage Vcont V
Vout pin voltage Vout 12 V
P-RUN pin voltage V
NMIsns pin voltage V

NMI pin voltage V
STBY pin voltage V
RES pin voltage V

OUTE pin voltage V
Power dissipation

*1

P

PRUN

NMIsns

NMI

STBY

RES

OUTE

T

Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –50 to +125 °C

Note: 1. This is the allowable value when mounted on a 40 × 40 × 1.6 mm glass-epoxy printed circuit

board with a mounting density of 10% at ambient temperatures up to Ta = 77°C. This value must
be derated by 8.3 mW/°C above that temperature.

40 V
V

CC

CC

V

V

Vout V
V

CC

V
Vout V
Vout V
Vout V
Vout V
400 mW

400

(mW)

T

300

200

100

Power Dissipation P

0

0 20406080–20–40 140

77°C

85°C

100 120

Ambient Temperature Ta (°C)

13

HA16129FPJ

Electrical Characteristics (Ta = 25°C, VCC = 12V, Vout = 5.0V, Rf = RR = 180kΩ, Cf =

3300pF, CR = 0.1µF, RT = 390kΩ, C

Item Symbol Min Typ Max Unit

Power supply current I
Current limiter voltage V

Regulator

Output voltage Vout 4.925 5.00 5.075 V VCC = 12V,

block

Input voltage stabilization Volin –30 — 30 mV VCC =

Load current stabilization Voload –30 — 30 mV Icont =

Ripple exclusion ratio R

Output voltage
temperature coefficient

Output voltage
adjustment range

P-RUN

Input high-level voltage V

input block

Input low-level voltage V
Input high-level current I
Input low-level current I

NMI output

High level V

block

Low level V
Function start voltage V

STBY

High level V
output
block

Low level V

Function start voltage V
Note: Values in parentheses are design reference values.

CC

CS

REJ

| δVout/δT | — 40 (200) ppm/°C Icont = 5mA

V

oMAX

iH

iL

iH

iL

OHN

OLN

STN

OHS

OLS

STS

= 1500pF, RCS = 0.2Ω)

RES

—1015mA
100 150 200 mV VCS = (VCC pin

(45) 75 — dB Vi = 0.5Vrms,

— — 7.0 V

2.0 — — V

— — 0.8 V
— 300 500 µAViH = 5.0V
–5 0 5 µAViL = 0.0V
Vout – 0.2 Vout Vout + 0.2 V I

— — 0.4 V I
— 0.7 1.4 V
Vout – 0.2 Vout Vout + 0.2 V I

— — 0.4 V I
— 0.7 1.4 V

Test
conditions

voltage –
CS pin
voltage)

Icont = 5mA

6 to 17.5V,
Icont = 10mA

0.1 to 15mA

fi = 1kHz

= 0mA

OHN

= 2.0mA

OLN

= 0mA

OHS

= 2.0mA

OLS

14

HA16129FPJ

Electrical Characteristics (Ta = 25°C, VCC = 12V, Vout = 5.0V, Rf = RR = 180kΩ, Cf =

3300pF, CR = 0.1µF, RT = 390kΩ, C

Item Symbol Min Typ Max Unit

RES

output
block

OUTE
output
block

RES

function

LVI
function

RES

delay time

Note: Values in parentheses are design reference values.

High level V

Low level V

Function start voltage V

High level V

Low level V

Function start voltage V

OHR

OLR

STR

OHE

OLE

STE

Power on time ton 25 40 60 ms

Clock off time toff 80 130 190 ms

Reset pulse high time t

Reset pulse low time t

NMI

function

Detection
voltage 1

RH

RL

V

NMI1

(Vout

detection)

Hysteresis 1 V
Temperature

HYSN1

| δV

coefficient

NMI

function

(V

CC

Detection
voltage 2

V

NMI2

detection)

STBY

function

Hysteresis 2 V

Detection
voltage

Hysteresis V
Temperature

HYSN2

V

STBY

HYSS

| δV

coefficient

Disable time t

RES

Recovery time tr (100) 200 (300) µs

= 1500pF, RCS = 0.2Ω) (cont)

RES

Vout – 0.2 Vout Vout + 0.2 V I

— — 0.4 V I
— 0.7 1.4 V
Vout – 0.2 Vout Vout + 0.2 V I

— — 0.4 V I
— 0.7 1.4 V

40 60 90 ms
15 20 30 ms

4.5 4.63 4.75 V

— 50 100 mV

/δT | — 100 (400) ppm/°C

NMI

5.0 5.4 5.7 V R1 = 13kΩ,

0.5 0.8 1.3 V R1 = 13kΩ,

2.70 3.00 3.30 V

1.20 1.35 1.50 V

/δT | — 100 (400) ppm/°C

STBY

(100) 200 (300) µs

Test
conditions

= 0mA

OHR

= 2.0mA

OLR

= 0mA

OHE

= 2.0mA

OLE

R2 = 390kΩ

R2 = 390kΩ

15

HA16129FPJ

Test Circuits

• Vout test circuit

V

CC

f = 1kHz
duty = 50%

• I

test circuit

CC

V

CC

f = 1kHz
duty = 50%

Icont

A

STBY

V

CC

CS CONT Vout

NMI

RES

HA16129FPJ

Voadj
P-RUN

Rf Cf RRCRRTGND C

390k

0.1µ180k180k 1500p

CS CONT Vout

I

IN

STBY

3300p

V

CC

NMI

RES

HA16129FPJ

Voadj
P-RUN

Rf Cf RRCRRTGND C

3300p

390k

0.1µ180k180k 1500p

Units: Resistors — Ω

Vout

STBYadj

NMIsns

NMIadj

RES

Here, the Vout voltage is for a VCC
of 12V, and Icont is monitored as
Vout is varied.

Iout

Vout

STBYadj

*I

= I

CC

NMIsns

NMIadj

RES

Capacitors — F

+ Iout

IN

16

• Test circuit for other parameters

V

CC

V

CC

Rf Cf RRCRRTGND C

3300p

V

counter

Frequency

f = 1kHz
duty = 50%

STBY

NMI

RES

Voadj
P-RUN

CS CONT Vout

HA16129FPJ

390k

0.1µ180k180k 1500p

STBYadj

NMIsns

NMIadj

RES

NMI Vout
detection

R1
13k

R2
390k

NMI VCC
detection

System Circuit Examples

•

Example of a basic system

1

3300p

0.1µ

1500p

180k

180k

390k

10

2
3
4
5
6
7
8
9

Rf
Cf
R

R

C

R

R

T

C

RES

GND
Voadj
OUTE

STBYP-RUN

STBYadj

RES

NMI

NMIadj

NMIsns

HA16129FPJ

V

OUT

CONT

CS

V

CC

20
19
18
17
16
15
14
13
12
11

DS

0.2

+

200µ

+

IGN
SW.

PORT

STBY

RES

NMI

V

CC

BATTERY

(5 V)

HA16129FPJ

Microprocessor

PORT

To other power supplies

Load

• Example of a system using a backup circuit and a primary voltage monitoring circuit

PORT

STBYP-RUN

RES

NMI

V

OUT

CONT

CS

V

CC

20
19
18
17
16
15
14
13
12
11

200µ

0.2

D

STBY

RES

Microprocessor

NMI

V

PORT

CC

R2

+

Q1

R4

R1

R3

To other power supplies

(5V)

D1

Q2

IGN

R5

SW.

+

BATTERY

S

D

Z

Backup circuit

DS:

Schottky diode

:

D

Zener diode

Z

3300p

0.1µ

1500p

180k

180k

390k

10

1
2
3
4
5
6
7
8
9

Rf
Cf
R

R

C

R

R

T

C

RES

GND
Voadj
OUTE

STBYadj

NMIadj

NMIsns

HA16129FPJ

Primary detection

Load

17

HA16129FPJ

Operating Waveforms

100k

10k

Frequency vs. Duty Characteristics

Ta = 25°C, CR = 0.1µF, RR = 180kΩ,
R

= 390kΩ, Rf = 180kΩ, Cf = 3300pF

T

C

= 1500pF

RES

Runaway area

Normal area

RES and OUTE
runaway detection
lines

OUTE normal
recovery line

1k

Frequency (Hz)

100

10

20 30

Power On Time (t

1000

Ta = 25°C, V
Cf = 3300pF, C

500

100

) (ms)

ON

50

Monitor

RES

OUTE

Pulse generator

VOH: 5V
V

: 0V

OL

40 50 60 70 80 90 100

Duty (%)

) vs. RT Resistance Characteristics

ON

= 0 → 12V, Rf = 180kΩ,

CC

= 1500pF

RES

CR = 0.47µF

CR = 0.1µF

18

10

Power On Time (t

5

1

10

50

100 500 1000

R

Resistance (kΩ)

T

CR = 0.033µF

HA16129FPJ

Clock Off Time (toff) vs. R

1000

Ta = 25°C, Rf = 180kΩ, Cf = 3300pF,
C

= 1500pF, RT = 390kΩ

RES

Resistance Characteristics

R

CR = 0.47µF

500

CR = 0.1µF

100

50

Clock Off Time (toff) (ms)

10

10 100 500 1000

50

Resistance (kΩ)

R

R

CR = 0.033µF

Reset Pulse High Time (t

Ta = 25°C, Rf = 180kΩ, Cf = 3300pF,
R

= 390kΩ, C

1000

T

RES

500

) (ms)

RH

100

50

10

Reset Pulse High Time (t

5

1

10

RH

= 1500pF

50

R

Resistance (kΩ)

R

) vs. RR Resistance Characteristics

CR = 0.47µF

CR = 0.1µF

CR = 0.033µF

100 500 1000

19

HA16129FPJ

Reset Pulse Low Time (tRL) vs.

RR Resistance Characteristics

1000

Ta = 25°C, Rf = 180kΩ, Cf = 3300pF,

= 390kΩ, C

R

500

) (ms)

100

RL

T

RES

50

= 1500pF

CR = 0.47µF

CR = 0.1µF

10

Reset Pulse Low Time (t

5

1

10 100 500 1000

50

Resistance (kΩ)

R

R

CR = 0.033µF

RES Delay Time and Recovery Time (tr) vs.

Rf Resistance Characteristics

10000

Ta = 25°C, Cf = 3300pF, RR = 180kΩ,
RT = 390kΩ, CR = 0.1µF

5000

1000

C

RES

C

RES

500

= 0.01µF

= 1500pF

20

100

C

RES

50

RES Delay Time and Recovery Time (tr) (µs)

10

10 100 500 1000

50

Rf Resistance (kΩ)

= 560pF

HA16129FPJ

RES Delay Time and Disable Time (t

Rf Resistance Characteristics

10000

Ta = 25°C, Cf = 3300pF, RR = 180kΩ,
CR = 0.1µF, RT = 390kΩ

5000

RES

C

) vs.

RES

) (µs)

RES

1000

C

RES

500

100

C

RES

50

RES Delay Time and Disable Time (t

10

10 100 500 1000

50

Rf Resistance (kΩ)

= 0.01µF

= 1500pF

= 560pF

6.0
Ta = 25°C, V

CR = 0.1µF, RR = 180kΩ, RT = 390kΩ, C

5.8

5.6

5.4

Output Voltage (V)

5.2

5.0

4.8

Roadj Resistance (to Ground) Characteristics

Output Voltage vs.

= 12V, Cf = 3300pF, Rf = 180kΩ,

CC

V

Vout

CC

RES

V

= 1500pF

Voadj

Roadj

100 1000

500

Roadj Resistance (to Ground) (kΩ)

5000 →∞

21

HA16129FPJ

Roadj Resistance (to Vout) Characteristics

5.0
Ta = 25°C, V

CR = 0.1µF, RR = 180kΩ, RT = 390kΩ,
C

= 1500pF

RES

4.8

4.6

4.4

4.2

Output Voltage Vout (V)

4.0

3.8

100 k 1 M

Output Voltage vs.

= 12V, Cf = 3300pF, Rf = 180kΩ,

CC

V

Vout

CC

Voadj

V

Roadj

500 k

Roadj Resistance (to Vout) (kΩ)

5 M 10 M

40

30

20

Current (µA)

CONT

I

10

Current vs. Vout Voltage Characteristics

I

CONT

Ta = 25°C,
Cf = 3300pF,
Rf = 180kΩ,
CR = 0.1µF,
RR = 180kΩ,
RT = 390kΩ,
C

= 1500pF

RES

0

5.00 5.024.964.94 4.984.92

Vout Voltage (V)

I

CONT

A

V

Vout

Vout

CONT

CS

V

CC

CC

12 V

Vout Voltage (V)

22

Package Dimensions

20

HA16129FPJ

Unit: mm

12.6

13 Max

11

5.5

1

0.80 Max

1.27

*0.42 ± 0.08

± 0.06

0.40

*Dimension including the plating thickness

Base material dimension

10

0.12

0.10 ± 0.10

0.15

M

2.20 Max

7.80

0.20 ± 0.04

*0.22 ± 0.05

0.70 ± 0.20

Hitachi Code
JEDEC
EIAJ
Mass

(reference value)

+ 0.20
– 0.30

1.15

0° – 8°

FP-20DA
—
Conforms

0.31 g

23

HA16129FPJ

Cautions

1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.

2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.

3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail­safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.

5. This product is not designed to be radiation resistant.

6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.

7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.

Hitachi, Ltd.

Semiconductor & Integrated Circuits.
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
Tel: Tokyo [phone] Fax: [phone]

URL NorthAmerica : http:semiconductor.hitachi.com/

For further information write to:

Hitachi Semiconductor
(America) Inc.
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San Jose,CA 95134
Tel: <1> [phone]
Fax: <1>[phone]

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Japan : http://www.hitachi.co.jp/Sicd/indx.htm

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Electronic components Group
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D-85622 Feldkirchen, Munich
Germany
Tel: <49> (89) 9 9180-0
Fax: <49> (89) 9 29 30 00

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Electronic Components Group.
Whitebrook Park
Lower Cookham Road
Maidenhead
Berkshire SL6 8YA, United Kingdom
Tel: <44> (1628) 585000
Fax: <44> (1628) 778322

Hitachi Asia Pte. Ltd.
16 Collyer Quay #20-00
Hitachi Tower
Singapore 049318
Tel: [phone]
Fax: [phone]

Hitachi Asia Ltd.
Taipei Branch Office
3F, Hung Kuo Building. No.167,
Tun-Hwa North Road, Taipei (105)
Tel: <886> (2) 2718-3666
Fax: <886> (2) 2718-8180

Copyright ' Hitachi, Ltd., 1998. All rights reserved. Printed in Japan.

24

Hitachi Asia (Hong Kong) Ltd.
Group III (Electronic Components)
7/F., North Tower, World Finance Centre,
Harbour City, Canton Road, Tsim Sha Tsui,
Kowloon, Hong Kong
Tel: <852> (2) 735 9218
Fax: <852> (2) 730 0281
Telex: 40815 HITEC HX