S-19400/19401 Series
AUTOMOTIVE, 125°C OPERATION,
3.8 μA CURRENT CONSUMPTION
WATCHDOG TIMER WITH RESET FUNCTION
www.ablic.com
© ABLIC Inc., 2014-2018 Rev.2.4_00
1
The S-19400/19401 Series is a watchdog timer developed using CMOS technology, which can operate with low current
consumption of 3.8 μA typ. The reset function and the low voltage detection function are available.
Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in
the purpose, contact to ABLIC Inc. is indispensable.
Features
• Detection voltage: 2.0 V to 5.0 V, selectable in 0.1 V step
• Detection voltage accuracy: ±2.0%
• Input voltage: VDD = 0.9 V to 6.0 V
• Hysteresis width: 5% typ.
• Current consumption: 3.8 μA typ.
• Reset time-out period: 14.5 ms typ. (CPOR = 2200 pF)
• Watchdog operation is switchable: Enable, Disable
• Watchdog operation voltage range: VDD = 2.5 V to 6.0 V
• Watchdog mode switching function*1: Time-out mode, window mode
• Watchdog input edge is selectable: Rising edge, falling edge, both rising and falling edges
• Product type is selectable: S-19400 Series
(Product with W
___
/ T pin (Output: WDO
________
pin))
S-19401 Series
(Product without W
___
/ T pin (Output: RST
_______
pin, WDO
________
pin))
• Operation temperature range: Ta = −40°C to +125°C
• Lead-free (Sn 100%), halogen-free
• AEC-Q100 qualified*2
*1. The S-19401 Series is fixed to the window mode.
*2. Contact our sales office for details.
Applications
• Automotive (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)
Packages
• TMSOP-8
• HSNT-8(2030)
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
2
Block Diagrams
1. S-19400 Series A / B / C Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
WEN Noise
filter
WDI Noise
filter
W
/ T Noise
filter
Figure 1
2. S-19400 Series D / E / F Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
WEN Noise
filter
WDI Noise
filter
W
/ T Noise
filter
Figure 2
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
3
3. S-19400 Series G / H / I Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
WEN Noise
filter
WDI Noise
filter
W
/ T Noise
filter
Figure 3
4. S-19400 Series J / K / L Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
WEN Noise
filter
WDI Noise
filter
W
/ T Noise
filter
Figure 4
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
4
5. S-19401 Series A / B / C Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
W
EN Noise
filter
WDI Noise
filter
RST
Figure 5
6. S-19401 Series D / E / F Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
W
EN Noise
filter
WDI Noise
filter
RST
Figure 6
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
5
7. S-19401 Series G / H / I Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
W
EN Noise
filter
WDI Noise
filter
RST
Figure 7
8. S-19401 Series J / K / L Type
CWDT
WDT circuit
Voltage detection
circuit
Reference
voltage circuit
VDD
VSS
CPOR
WDO
W
EN Noise
filter
WDI Noise
filter
RST
Figure 8
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
6
AEC-Q100 Qualified
This IC supports AEC-Q100 for the operation temperature grade 1.
Contact our sales office for details of AEC-Q100 reliability specification.
Product Name Structure
Users can select the product type, detection voltage, and package type for the S-19400/19401 Series. Refer to
"1. Product name" regarding the contents of product name, "2. Product type list" regarding the product types,
"3. Packages" regarding the package drawings.
1. Product name
S-1940 x x xx A - xxxx U 4
Package abbreviation and IC packing specifications*1
K8T2: TMSOP-8, Tape
A8T1: HSNT-8(2030), Tape
Detection voltage
20 to 50
(e.g., when the detection voltage is 2.0 V, it is expressed as 20.)
Environmental code
U: Lead-free (Sn 100%), halogen-free
Operation temperature
A: Ta = −40°C to +125°C
Product type 2*3
0, 1
Product type 1*2
A to L
*1. Refer to the tape drawing.
*2. Refer to "2. Product type list".
*3. 0: S-19400 Series (Product with W
___
/ T pin)
The WDO
________
pin outputs the signals which are from the watchdog timer circuit and the voltage detection
circuit.
1: S-19401 Series (Product without W
___
/ T pin)
The WDO
________
pin outputs the signals which are from the watchdog timer circuit and the voltage detection
circuit.
The RST
_______
pin outputs the signal which is from the voltage detection circuit.
The watchdog mode is fixed to the window mode.
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
7
2. Product type list
Table 1
Product Type WEN Pin Logic Constant Current Source Pull-down
for WEN Pin Input Edge Output Pull-up
Resistor
A Active "H" Available Rising edge Available
B Active "H" Available Falling edge Available
C Active "H" Available Both rising and falling edges Available
D Active "L" Unavailable Rising edge Available
E Active "L" Unavailable Falling edge Available
F Active "L" Unavailable Both rising and falling edges Available
G Active "H" Available Rising edge Unavailable
H Active "H" Available Falling edge Unavailable
I Active "H" Available Both rising and falling edges Unavailable
J Active "L" Unavailable Rising edge Unavailable
K Active "L" Unavailable Falling edge Unavailable
L Active "L" Unavailable Both rising and falling edges Unavailable
3. Packages
Table 2 Package Drawing Codes
Package Name Dimension Tape Reel Land
TMSOP-8 FM008-A-P-SD FM008-A-C-SD FM008-A-R-SD −
HSNT-8(2030) PP008-A-P-SD PP008-A-C-SD PP008-A-R-SD PP008-A-L-SD
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
8
Pin Configurations
1. TMSOP-8
7
6
5
8
2
3
4
1
Top view
Figure 9
Table 3 S-19400 Series
Pin No. Symbol Description
1 W
_
_
_
/ T*1 Watchdog mode switching pin
2 CPOR Reset time-out period adjustment pin
3 CWDT Watchdog time adjustment pin
4 VSS GND pin
5 WEN Watchdog enable pin
6 WDO
_
______
_
Watchdog output and reset output pin
7 WDI Watchdog input pin
8 VDD Voltage input pin
Table 4 S-19401 Series
Pin No. Symbol Description
1 RST
_
_____
_
Reset output pin
2 CPOR Reset time-out period adjustment pin
3 CWDT Watchdog time adjustment pin
4 VSS GND pin
5 WEN Watchdog enable pin
6 WDO
_
______
_
Watchdog output pin
7 WDI Watchdog input pin
8 VDD Voltage input pin
*1. W
___
/ T pin = "H": Time-out mode
W
___
/ T pin = "L": Window mode
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
9
2. HSNT-8(2030)
81
54
Top view
Bottom view
18
45
*1
Figure 10
Table 5 S-19400 Series
Pin No. Symbol Description
1 W
_
_
_
/ T*2 Watchdog mode switching pin
2 CPOR Reset time-out period adjustment pin
3 CWDT Watchdog time adjustment pin
4 VSS GND pin
5 WEN Watchdog enable pin
6 WDO
_
______
_
Watchdog output and reset output pin
7 WDI Watchdog input pin
8 VDD Voltage input pin
Table 6 S-19401 Series
Pin No. Symbol Description
1 RST
_
_____
_
Reset output pin
2 CPOR Reset time-out period adjustment pin
3 CWDT Watchdog time adjustment pin
4 VSS GND pin
5 WEN Watchdog enable pin
6 WDO
_
______
_
Watchdog output pin
7 WDI Watchdog input pin
8 VDD Voltage input pin
*1. Connect the heat sink of backside at shadowed area to the board, and set electric potential GND.
However, do not use it as the function of electrode.
*2. W
___
/ T pin = "H": Time-out mode
W
___
/ T pin = "L": Window mode
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
10
Pin Functions
Refer to " Operations" for details.
1. W
____
/ T pin (S-19400 Series only)
This is a pin to switch the watchdog mode.
The S-19400 Series changes to the time-out mode when the W
___
/ T pin is "H", and changes to the window mode
when the W
___
/ T pin is "L". Switching the mode is prohibited during the operation.
The W
___
/ T pin is connected to a constant current source (0.3 μA typ.) and is pulled down internally.
1. 1 Time-out mode (W
___
/ T pin = "H")
The S-19400 Series detects an abnormality when not inputting an edge to the WDI pin during the watchdog
time-out period (tWDU). And then "L" is output from the WDO
________
pin.
W / T
(S-19400 only)
WDI
(Rising edge)
WDO
t
WDU
t
RST
"H"
Figure 11 Abnormality Detection in Time-out Mode
1. 2 Window mode (W
___
/ T pin = "L")
When not inputting an edge to the WDI pin during tWDU, or when an edge is input to the WDI pin again within a
specific period of time (the discharge time due to an edge detection + 1 charge-discharge time (tWDL)) after
inputting an edge to the WDI pin, the WDO
________
pin output changes from "H" to "L".
W / T
(S-19400 only)
WDI
(Rising edge)
WDO
t
WDU
t
RST
"L"
t
RST
t
WDL
Figure 12 Abnormality Detection in Window Mode
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
11
2. RST
________
pin (S-19401 Series only)
This is a reset output pin. It outputs "L" when detecting a low voltage.
Be sure to connect an external pull-up resistor (RextR) to the RST
_______
pin in the product without an output pull-up
resistor.
3. WDO
_________
pin
3. 1 S-19400 Series
This pin combines the reset output and the watchdog output (time-out detection, double pulse detection).
Be sure to connect an external pull-up resistor (RextW) to the WDO
________
pin in the product without an output pull-up
resistor. Table 7 shows the WDO
________
pin output status.
Table 7
Operation Status WDO
_
______
_
Pin
W
_
_
_
/ T Pin = "H" W
_
_
_
/ T Pin = "L"
Normal operation "H" "H"
Low voltage detection "L" "L"
Time-out detection "L" "L"
Double pulse detection "H" "L"
When watchdog timer is Disable "H" "H"
3. 2 S-19401 Series
This is the watchdog output (time-out detection, double pulse detection) pin.
Be sure to connect an external pull-up resistor (RextW) to the WDO
________
pin in the product without an output pull-up
resistor. Table 8 shows the WDO
________
pin and RST
_______
pin output statuses.
Table 8
Operation Status WDO
_
______
_
Pin RST
_
_____
_
Pin
Normal operation "H" "H"
Low voltage detection "L" "L"
Time-out detection "L" "H"
Double pulse detection "L" "H"
When watchdog timer is Disable "H" "H"
4. CPOR pin
This is a pin to connect an adjustment capacitor for reset output delay time (CPOR) in order to generate the reset
time-out period (tRST). CPOR is charged and discharged by an internal constant current circuit, and the
charge-discharge duration is tRST.
tRST is calculated by using the following equation. Take into consideration CPOR variation.
tRST = 6,500,000 × CPOR [F] + 0.0002
5. CWDT pin
This is a pin to connect an adjustment capacitor for watchdog output delay time (CWDT) in order to generate the
watchdog time-out period (tWDU) and the watchdog double pulse detection time (tWDL). CWDT is charged and
discharged by an internal constant current circuit.
tWDU is calculated by using the following equation. Take into consideration CWDT variation.
tWDU = 50,000,000 × CWDT [F] + 0.0011
Moreover, tWDL is calculated by using the following equation.
tWDL = tWDU
32
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
12
6. WEN pin
This is a pin to switch Enable / Disable of the watchdog timer.
The voltage detection circuit independently operates at all times regardless of the watchdog timer operation.
6. 1 S-19400/19401 Series A / B / C / G / H / I type (WEN pin logic active "H" product)
The watchdog timer becomes Enable if the input is "H", and the charge-discharge operation is performed at the
CWDT pin.
The WEN pin is connected to a constant current source (0.3 μA typ.) and is pulled down internally.
6. 2 S-19400/19401 Series D / E / F / J / K / L type (WEN pin logic active "L" product)
The watchdog timer becomes Enable if the input is "L", and the charge-discharge operation is performed at the
CWDT pin.
The WEN pin is not pulled down internally.
7. WDI pin
This is an input pin to receive a signal from the monitored object. By inputting an edge at an appropriate timing, the
WDI pin confirms the normal operation of the monitored object.
The WDI pin is connected to a constant current source (0.3 μA typ.) and is pulled down internally.
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
13
Absolute Maximum Ratings
Table 9
(Ta = −40°C to +125°C unless otherwise specified)
Item Symbol Absolute Maximum Rating Unit
VDD pin voltage VDD VSS − 0.3 to VSS + 7.0 V
WDI pin voltage VWDI VSS − 0.3 to VDD + 0.3 ≤ VSS + 7.0 V
WEN pin voltage VWEN VSS − 0.3 to VDD + 0.3 ≤ VSS + 7.0 V
W
_
_
_
/ T pin voltage Vw
___
/ T VSS − 0.3 to VDD + 0.3 ≤ VSS + 7.0 V
CPOR pin voltage VCPOR VSS − 0.3 to VDD + 0.3 ≤ VSS + 7.0 V
CWDT pin voltage VCWDT VSS − 0.3 to VDD + 0.3 ≤ VSS + 7.0 V
RST
_______
pin voltage A / B / C / D / E / F type VRST
_______ VSS − 0.3 to VDD + 0.3 ≤ VSS + 7.0 V
G / H / I / J / K / L type VSS − 0.3 to VSS + 7.0 V
WDO
________
pin voltage A / B / C / D / E / F type VWDO
________ VSS − 0.3 to VDD + 0.3 ≤ VSS + 7.0 V
G / H / I / J / K / L type VSS − 0.3 to VSS + 7.0 V
Operation ambient temperature Topr −40 to +125 °C
Storage temperature Tstg −40 to +150 °C
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Thermal Resistance Value
Table 10
Item Symbol Condition Min. Typ. Max. Unit
Junction-to-ambient thermal
resistance*1 θJA
TMSOP-8
Board A − 160 − °C/W
Board B − 133 − °C/W
Board C −
− − °C/W
Board D −
− − °C/W
Board E −
− − °C/W
HSNT-8(2030)
Board A − 181 − °C/W
Board B − 135 − °C/W
Board C −
40 − °C/W
Board D −
42 − °C/W
Board E −
32 − °C/W
*1. Test environment: compliance with JEDEC STANDARD JESD51-2A
Remark Refer to " Power Dissipation" and "Test Board" for details.
Recommended Operation Conditions
Table 11
Item Symbol Condition Min. Typ. Max. Unit
VDD pin voltage VDD Detector block 0.9 − 6.0 V
Watchdog timer block 2.5 − 6.0 V
Set detection voltage −VDET
(
S
)
0.1 V step 2.0 − 5.0 V
External pull-up resistor
for RST
_______
pin RextR S-19401 Series G / H / I / J / K / L type 10 100 − kΩ
External pull-up resistor
for WDO
________
pin RextW S-19400/19401 Series G / H / I / J / K / L
type 10 100 − kΩ
Adjustment capacitor
for reset output delay time CPOR − 0.1 2.2 1000 nF
Adjustment capacitor
for watchdog output delay time CWDT − 0.1 0.47 1000 nF
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
14
Electrical Characteristics
1. S-19400 Series
Table 12 (1 / 2)
(WEN pin logic active "H" product, VDD = 5.0 V, Ta = −40°C to +125°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit Test
Circuit
Detection voltage*1 −VDET − −VDET(S)
× 0.98 −VDET(S) −VDET(S)
× 1.02 V 1
Hysteresis width VHYS − −VDET
× 0.03
−VDET
× 0.05
−VDET
× 0.07 V 1
Current consumption
during operation ISS1 When watchdog timer operates − 3.8 9.0 μA 2
Reset time-out period tRST CPOR = 2200 pF 8.7 14.5 20 ms 3
Watchdog time-out period tWDU CWDT = 470 pF 15 24.6 34 ms 3
Watchdog double pulse
detection time tWDL C
WDT = 470 pF 461 769 1077 μs 4
Watchdog output voltage "H" VWOH A / B / C / D / E / F type only VDD − 1.0 − − V 5
Watchdog output voltage "L" VWOL
External pull-up resistor of 100 k
Ω
is
connected for G / H / I / J / K / L type
− − 0.4 V 6
Watchdog output
pull-up current IWUP VWDO
________ = 0 V,
A / B / C / D / E / F type only − −0.85 −0.4 μA 7
Watchdog output current IWOUT V
DS = 0.4 V
VDD = 1.5 V 0.48 1.1 − mA 8
VDD = 1.8 V 0.8 1.6 − mA 8
VDD = 2.5 V 1.0 2.6 − mA 8
VDD = 3.0 V 1.4 3.3 − mA 8
Watchdog output leakage
current IWLEAK V
DS = 6.0 V, VDD = 6.0 V − − 0.096 μA 9
Input pin voltage 1 "H" VSH1 WEN pin 0.7 × VDD − − V 10
Input pin voltage 1 "L" VSL1 WEN pin − − 0.3 × VDD V 10
Input pin voltage 2 "H" VSH2 W
_
_
_
/ T pin 0.7 × VDD − − V 10
Input pin voltage 2 "L" VSL2 W
_
_
_
/ T pin − − 0.3 × VDD V 10
Input pin voltage 3 "H" VSH3 WDI pin 0.7 × VDD − − V 10
Input pin voltage 3 "L" VSL3 WDI pin − − 0.3 × VDD V 10
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
15
Table 12 (2 / 2)
(WEN pin logic active "H" product, VDD = 5.0 V, Ta = −40°C to +125°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit Test
Circuit
Input pin current 1 "H" ISH1
WEN pin,
VDD = 6.0 V,
Input pin voltage = 6.0 V
A / B / C
/ G / H / I
type
− 0.3 1.0 μA 10
D / E / F
/ J / K / L
type
−0.1 − 0.1 μA 10
Input pin current 1 "L" ISL1 WEN pin, VDD = 6.0 V,
Input pin voltage = 0 V −0.1 − 0.1 μA 10
Input pin current 2 "H" ISH2
W
_
__
/ T pin,
V
DD
= 6.0 V, Input pin voltage = 6.0 V
− 0.3 1.0 μA 10
Input pin current 2 "L" ISL2
W
_
__
/ T pin,
V
DD
= 6.0 V, Input pin voltage = 0 V
−0.1 − 0.1 μA 10
Input pin current 3 "H" ISH3 WDI pin, VDD = 6.0 V,
Input pin voltage = 6.0 V − 0.3 1.0 μA 10
Input pin current 3 "L" ISL3 WDI pin, VDD = 6.0 V,
Input pin voltage = 0 V −0.1 − 0.1 μA 10
Input pulse width "H"*2 thigh1 − 1.5 − − μs 10
Input pulse width "L"*2 tlow1 − 1.5 − − μs 10
Watchdog output delay time tWOUT − − 25 40 μs 3
Reset output delay time tROUT − − 25 40 μs 3
Input setup time tiset − 1.0 − − μs 3
*1. −VDET: Actual detection voltage, −VDET(S): Set detection voltage
*2. The input pulse width "H" (thigh1) and the input pulse width "L" (tlow1) are defined as shown in Figure 13.
Inputs to the WEN pin and the WDI pin should be greater than or equal to the min. value specified in " Electrical
Characteristics".
t
high1
t
low1
V
SH3
V
SH3
V
SL3
V
SL3
WEN
WDI
t
high1
t
low1
V
SH1
V
SH1
V
SL1
V
SL1
Figure 13
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
16
2. S-19401 Series
Table 13 (1 / 2)
(WEN pin logic active "H" product, VDD = 5.0 V, Ta = −40°C to +125°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit Test
Circuit
Detection voltage*1 −VDET − −VDET(S)
× 0.98 −VDET(S) −VDET(S)
× 1.02 V 11
Hysteresis width VHYS − −VDET
× 0.03
−VDET
× 0.05
−VDET
× 0.07 V 11
Current consumption
during operation ISS1 When watchdog timer operates − 3.8 9.0 μA 12
Reset time-out period tRST CPOR = 2200 pF 8.7 14.5 20 ms 13
Watchdog time-out period tWDU CWDT = 470 pF 15 24.6 34 ms 13
Watchdog double pulse
detection time tWDL C
WDT = 470 pF 461 769 1077 μs 14
Reset output voltage "H" VROH A / B / C / D / E / F type only VDD − 1.0 − − V 15
Reset output voltage "L" VROL
External pull-up resistor of 100 k
Ω
is
connected for G / H / I / J / K / L type
− − 0.4 V 16
Reset output pull-up current IRUP VRST
_______ = 0 V,
A / B / C / D / E / F type only − −0.85 −0.4 μA 17
Reset output current IROUT V
DS = 0.4 V
VDD = 1.5 V 0.48 1.1 − mA 18
VDD = 1.8 V 0.8 1.6 − mA 18
VDD = 2.5 V 1.0 2.6 − mA 18
VDD = 3.0 V 1.4 3.3 − mA 18
Reset output leakage current IRLEAK V
DS = 6.0 V, VDD = 6.0 V − − 0.096 μA 19
Watchdog output voltage "H" VWOH A / B / C / D / E / F type only VDD − 1.0 − − V 20
Watchdog output voltage "L" VWOL
External pull-up resistor of 100 k
Ω
is
connected for G / H / I / J / K / L type
− − 0.4 V 21
Watchdog output
pull-up current IWUP VWDO
________ = 0 V,
A / B / C / D / E / F type only − −0.85 −0.4 μA 22
Watchdog output current IWOUT V
DS = 0.4 V
VDD = 1.5 V 0.48 1.1 − mA 23
VDD = 1.8 V 0.8 1.6 − mA 23
VDD = 2.5 V 1.0 2.6 − mA 23
VDD = 3.0 V 1.4 3.3 − mA 23
Watchdog output leakage
current IWLEAK V
DS = 6.0 V, VDD = 6.0 V − − 0.096 μA 24
Input pin voltage 1 "H" VSH1 WEN pin 0.7 × VDD − − V 25
Input pin voltage 1 "L" VSL1 WEN pin − − 0.3 × VDD V 25
Input pin voltage 3 "H" VSH3 WDI pin 0.7 × VDD − − V 25
Input pin voltage 3 "L" VSL3 WDI pin − − 0.3 × VDD V 25
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
17
Table 13 (2 / 2)
(WEN pin logic active "H" product, VDD = 5.0 V, Ta = −40°C to +125°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Input pin current 1 "H" ISH1
WEN pin,
VDD = 6.0 V,
Input pin voltage = 6.0 V
A / B / C
/ G / H / I
type
− 0.3 1.0 μA 25
D / E / F
/ J / K / L
type
−0.1 − 0.1 μA 25
Input pin current 1 "L" ISL1 WEN pin, VDD = 6.0 V,
Input pin voltage = 0 V −0.1 − 0.1 μA 25
Input pin current 3 "H" ISH3 WDI pin, VDD = 6.0 V,
Input pin voltage = 6.0 V − 0.3 1.0 μA 25
Input pin current 3 "L" ISL3 WDI pin, VDD = 6.0 V,
Input pin voltage = 0 V −0.1 − 0.1 μA 25
Input pulse width "H"*2 thi
g
h1 − 1.5 − − μs 25
Input pulse width "L"*2 tlow1 − 1.5 − − μs 25
Watchdog output delay
time tWOUT − − 25 40 μs 13
Reset output delay time tROUT − − 25 40 μs 13
Input setup time tiset − 1.0 − − μs 13
*1. −VDET: Actual detection voltage, −VDET(S): Set detection voltage
*2. The input pulse width "H" (thigh1) and the input pulse width "L" (tlow1) are defined as shown in Figure 14.
Inputs to the WEN pin and the WDI pin should be greater than or equal to the min. value specified in " Electrical
Characteristics".
t
high1
t
low1
V
SH3
V
SH3
V
SL3
V
SL3
WEN
WDI
t
high1
t
low1
V
SH1
V
SH1
V
SL1
V
SL1
Figure 14
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
18
Test Circuits
Refer to " Recommended Operation Conditions" when setting constants of external pull-up resistors (RextR, RextW)
and external capacitors (CPOR, CWDT).
1. S-19400 Series
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VDD
VSS
V
+
+
CPOR
CWDT
WDI
WEN
W / T
WDO
V
VDD
VSS
V
+
+
CPOR
CWDT
WDI
WEN
W / T
WDO
V
Figure 15 Test Circuit 1
VSS
A
CPOR
CWDT
WDI
WEN
W / T
WDO
VDD
+
Figure 16 Test Circuit 2
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VSS
V
+
CPOR
CWDT
WDI
WEN
W / T
WDO
VDD
VSS
V
+
CPOR
CWDT
WDI
WEN
W / T
WDO
VDD
Figure 17 Test Circuit 3
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VDD
VSS
V+
CPOR
CWDT
WDI
WEN
W / T
WDO
VDD
VSS
V+
CPOR
CWDT
WDI
WEN
W / T
WDO
Figure 18 Test Circuit 4
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
19
VDD
VSS
V
CPOR
CWDT
WDI
WEN
W / T
WDO
+
Figure 19 Test Circuit 5
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VDD
VSS
V
+
CPOR
CWDT
WDI
WEN
W / T
WDO
VDD
VSS
V
+
CPOR
CWDT
WDI
WEN
W / T
WDO
Figure 20 Test Circuit 6
VDD
VSS
A
CPOR
CWDT
WDI
WEN
W / T
WDO
+
VDD
VSS
A
CPOR
CWDT
WDI
WEN
W / T
WDO +
Figure 21 Test Circuit 7 Figure 22 Test Circuit 8
VDD
VSS
A
CPOR
CWDT
WDI
WEN
W / T
WDO +
VDD
VSS
V
+
CPOR
CWDT
WEN, WDI, W / T
WDO
A
+
Figure 23 Test Circuit 9 Figure 24 Test Circuit 10
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
20
2. S-19401 Series
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VDD
VSS
V
+
+
CPOR
CWDT
WDI
WEN
WDO
V
RST
VDD
VSS
V
+
+
CPOR
CWDT
WDI
WEN
WDO
V
RST
Figure 25 Test Circuit 11
VSS
A
CPOR
CWDT
WDI
WEN
WDO
VDD
+
RST
Figure 26 Test Circuit 12
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VSS
V
+
CPOR
CWDT
WDI
WEN
WDO
VDD
RST
VSS
V
+
CPOR
CWDT
WDI
WEN
WDO
VDD
RST
Figure 27 Test Circuit 13
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VDD
VSS
V+
CPOR
CWDT
WDI
WEN
WDO
RST
VDD
VSS
V+
CPOR
CWDT
WDI
WEN
WDO
RST
Figure 28 Test Circuit 14
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
21
VDD
VSS V+
CPOR
CWDT
WDI
WEN
WDO
RST
Figure 29 Test Circuit 15
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VDD
VSS V+
CPOR
CWDT
WDI
WEN
WDO
RST
VDD
VSS V+
CPOR
CWDT
WDI
WEN
WDO
RST
Figure 30 Test Circuit 16
VDD
VSS A
CPOR
CWDT
WDI
WEN
WDO
RST
+
VDD
VSS
A
CPOR
CWDT
WDI
WEN
WDO
RST +
Figure 31 Test Circuit 17 Figure 32 Test Circuit 18
VDD
VSS
A
CPOR
CWDT
WDI
WEN
WDO
RST +
VDD
VSS
V
CPOR
CWDT
WDI
WEN
WDO
+
RST
Figure 33 Test Circuit 19 Figure 34 Test Circuit 20
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
22
(1) A / B / C / D / E / F type (2) G / H / I / J / K / L type
VDD
VSS
V
+
CPOR
CWDT
WDI
WEN
WDO
RST
VDD
VSS
V
+
CPOR
CWDT
WDI
WEN
WDO
RST
Figure 35 Test Circuit 21
VDD
VSS
A
CPOR
CWDT
WDI
WEN
WDO
+
RST
VDD
VSS
A
CPOR
CWDT
WDI
WEN
WDO +
RST
Figure 36 Test Circuit 22 Figure 37 Test Circuit 23
VDD
VSS
A
CPOR
CWDT
WDI
WEN
WDO +
RST
VDD
VSS
V
+
CPOR
CWDT
WEN, WDI
WDO
A
+RST
Figure 38 Test Circuit 24 Figure 39 Test Circuit 25
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
23
Operations
1. From power-on to reset release
The S-19400/19401 Series initiates the initialization if the VDD pin voltage exceeds the release voltage (+VDET).
The charge-discharge operation to the CPOR pin is initiated after the passage of the initialization time (tINIT), and
the WDO
________
pin output and the RST
_______
pin output change from "L" to "H" after the operation is performed 4 times.
t
INIT
t
RST
+V
DET
V
CPU
V
CPL
Output "L" → "H"
Output "L" → "H"
VDD
CPOR
WDO
RST
(S-19401 only)
Remark VCPU: CPOR charge upper limit threshold (1.25 V typ.)
V
CPL: CPOR charge lower limit threshold (0.20 V typ.)
Figure 40
tINIT changes according to the power supply rising time. Refer to Figure 41 for the relation between tINIT and the
power supply rising time.
Ta = +25°C
0.000001 0.00001 0.0001 0.001 0.01 0.1
Initialization time [s]
Power supply rising time [s]
0.1
0.01
0.001
0.0001
0.00001
−V
DET
= 2.0 V
−V
DET
= 5.0 V
−V
DET
= 3.3 V
Figure 41 Power Supply Rising Time Dependency of Initialization Time
V
DD = WEN
CPOR V
CPL
+V
DET
1.8 V
6.0 V
Initialization time
*1
Power supply rising time
*1. The initialization time is the time period from when the VDD pin voltage reaches +VDET to when CPOR rises.
Figure 42 Initialization Time
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
24
2. From reset release to initiation of charge-discharge operation to CWDT pin
The charge-discharge operation to the CWDT pin differs depending on the status of the WEN pin at the reset release.
2. 1 When WEN pin is "H" at reset release (Active "H")
Since the watchdog timer is Enable, the S-19400/19401 Series initiates the charge-discharge operation to the
CWDT pin.
VDD
CPOR
CWDT
WEN
WDO
RST
(Active "H")
(S-19401 only)
Figure 43 WEN Pin = "H"
2. 2 When WEN pin is "L" at reset release (Active "H")
Since the watchdog timer is Disable after the CPOR pin performs the charge-discharge operation 4 times, the
S-19400/19401 Series does not initiate the charge-discharge operation to the CWDT pin. If the input to the WEN
pin changes to "H" in this status, the S-19400/19401 Series initiates the charge-discharge operation to the CWDT
pin.
Charge-discharge operation is initiated
at WEN pin = "H"
VDD
CPOR
CWDT
WEN
WDO
RST
(Active "H")
(S-19401 only)
Figure 44 WEN Pin = "L" → "H"
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
25
3. Watchdog time-out detection
The watchdog timer detects a time-out after the charge-discharge operation to the CWDT pin is performed 32 times,
then the WDO
________
pin output changes from "H" to "L".
"L"
12 34 12 34
12 312345 29303132
tWDU tRST
VDD
CPOR
CWDT
WDI
WEN
WDO
RST
(S-19401 only)
(Active "H")
Figure 45
4. Internal counter reset due to edge detection
When the WDI pin detects an edge during the charge-discharge operation to the CWDT pin, the internal counter
which counts the number of times of the charge-discharge operation is reset. The CWDT pin initiates the discharge
operation when an edge is detected, and initiates the charge-discharge operation again after the discharge operation
is completed.
4. 1 Counter reset due to rising edge detection
(S-1940xAxxA, S-1940xDxxA, S-1940xGxxA, S-1940xJxxA)
1234 1234
1 2 3 4 1 2 3 4 30 31 32 1
Counter reset due to rising edge detection Time-out after counter reset
VDD
CPOR
CWDT
WDI
WEN
WDO
RST
(S-19401 only)
(Active "H")
Figure 46
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
26
4. 2 Counter reset due to falling edge detection
(S-1940xBxxA, S-1940xExxA, S-1940xHxxA, S-1940xKxxA)
VDD
CPOR
CWDT
WDI
WEN
WDO
RST
(Active "H")
(S-19401 only)
1234 1234
12341234 303132 1
Counter reset due to falling edge detection Time-out after counter reset
Figure 47
4. 3 Counter reset due to both rising and falling edges detection 1
(S-1940xCxxA, S-1940xFxxA, S-1940xIxxA, S-1940xLxxA)
VDD
CPOR
CWDT
WDI
WEN
WDO
RST
(Active "H")
(S-19401 only)
Counter reset due to
both rising and falling edges detection
Time-out after counter reset
1234
1234 12 12
1234
1230 31 32
Figure 48
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
27
4. 4 Counter reset due to both rising and falling edges detection 2
(S-1940xCxxA, S-1940xFxxA, S-1940xIxxA, S-1940xLxxA)
VDD
CPOR
CWDT
WDI
WEN
WDO
RST
(Active "H")
(S-19401 only)
Counter reset due to
both rising and falling edges detection Time-out after counter reset
30 31 32
1234
123412 12
1234
12
Figure 49
5. WEN pin operation during charge-discharge operation to CWDT pin
When the WEN pin changes from "H" to "L" during the charge-discharge operation to the CWDT pin, the CWDT pin
performs the discharge operation. Moreover, the internal counter which counts the number of times of the
charge-discharge operation for the CWDT pin is also reset.
If the WEN pin changes to "H" again in this status, the CWDT pin initiates the charge-discharge operation.
VDD
CPOR
CWDT
WEN
WDO
RST
(Active "H")
(S-19401 only)
Watchdog timer restarts the operation at WEN pin = "H"
Charge-discharge operation is stopped, counter reset
31 32
1234
1234 12
1234
12
Figure 50
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
28
6. Watchdog double pulse detection
If an edge is input to the WDI pin again within a specific period of time (the discharge time due to an edge detection +
1 charge-discharge time (tWDL)) after inputting an edge to the WDI pin when the S-19400/19401 Series is the window
mode, the WDO
________
pin output changes from "H" to "L".
When the watchdog timer becomes Disable due to a change of the WEN pin ("H" → "L" → "H") after inputting an
edge to the WDI pin, the WDO
________
pin continues outputting "H" even if an edge is input to the WDI pin within the specific
period of time mentioned above.
6. 1 Double pulse detection due to rising edge detection
(S-1940xAxxA, S-1940xDxxA, S-1940xGxxA, S-1940xJxxA)
"L"
VDD
CPOR
CWDT
WDI
W / T
WEN
WDO
RST
(Active "H")
(S-19401 only)
tWDL
(S-19400 only)
12345678910
1234 1234
1234
Figure 51
6. 2 Double pulse detection due to falling edge detection
(S-1940xBxxA, S-1940xExxA, S-1940xHxxA, S-1940xKxxA)
Counter reset at the 1st edge
Output "H" → "L" at the 2nd edge
"L"
VDD
CPOR
CWDT
WDI
W / T
WEN
WDO
RST
(Active "H")
(S-19401 only)
(S-19400 only)
12345678910
1234 1234
1234
Figure 52
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
29
6. 3 Double pulse detection due to both rising and falling edges detection
(S-1940xCxxA, S-1940xFxxA, S-1940xIxxA, S-1940xLxxA)
The double pulse is detected only when edges are input in order of rising and falling.
6. 3. 1 When edges are input to WDI pin in order of rising and falling
Counter reset at the1st edge
Output "H" → "L" at the 2nd edge
"L"
VDD
CPOR
CWDT
WDI
W / T
WEN
WDO
RST
(Active "H")
(S-19401 only)
(S-19400 only)
1234567891011
1234 1 234
1234
Figure 53 Double Pulse Detection
6. 3. 2 When edges are input to WDI pin in order of falling and rising
Only counter reset at the 2nd edge
Counter reset at the 1st edge
"L"
VDD
CPOR
CWDT
WDI
W / T
WEN
WDO
RST
(Active "H")
(S-19401 only)
(S-19400 only)
1234
1 2 3 4 1 2 3 4 29 30 31 32
1234
Figure 54 Double Pulse Non-detection
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
30
7. Operation of low voltage detection
The voltage detection circuit detects a low voltage if the power supply voltage falls below the detection voltage, and
then "L" is output from the WDO
________
pin and the RST
_______
pin (Only the S-19401 Series). The output is maintained until
the charge-discharge operation of the CPOR pin is performed 4 times.
The S-19400/19401 Series can detect a low voltage even if either the CPOR pin or the WDT pin performs the
charge-discharge operation. In this case, the status of the WEN pin or the W
___
/ T pin does not have an affect.
"H" or "L"
"H" or "L"
"H" or "L"*1
VDD
CPOR
CWDT
WDI
W / T
WEN
WDO
RST
(Active "H")
(S-19401 only)
(S-19400 only)
12 1234 1234
1234 12
Figure 55
*1. When the WEN pin is Disable, the charge-discharge operation of CWDT pin is not performed.
8. WEN pin, WDI pin and W
____
/ T pin
Each of the WEN pin, the WDI pin and the W
___
/ T pin has a noise filter.
If the power supply voltage is 5.0 V, noise with a minimum pulse width of 200 ns can be eliminated.
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
31
Standard Circuits
1. S-19400 Series A / B / C / D / E / F type
WDO
VDD
V
DD
WEN
WDI
W / T
C
POR*1
C
WDT*2
VSS CPOR CWDT
*1. Adjustment capacitor for reset output delay time (CPOR) should be connected directly to the CPOR pin and
the VSS pin.
*2. Adjustment capacitor for watchdog output delay time (CWDT) should be connected directly to the CWDT pin
and the VSS pin. A capacitor of 100 pF to 1 μF can be used for CPOR and CWDT.
Figure 56
2. S-19400 Series G / H / I / J / K / L type
WDO
VDD
V
DD
WEN
WDI
W / T
C
POR*2
C
WDT*3
VSS CPOR CWDT
R
extW*1
*1. R
extW is an external pull-up resistor for the WDO
________
pin.
*2. Adjustment capacitor for reset output delay time (CPOR) should be connected directly to the CPOR pin and
the VSS pin.
*3. Adjustment capacitor for watchdog output delay time (CWDT) should be connected directly to the CWDT pin
and the VSS pin. A capacitor of 100 pF to 1 μF can be used for CPOR and CWDT.
Figure 57
Caution The above connection diagrams and constants will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constants.
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
32
3. S-19401 Series A / B / C / D / E / F type
WDO
RST
VDD
V
DD
WEN
WDI
C
POR*1
C
WDT*2
VSS CPOR CWDT
*1. Adjustment capacitor for reset output delay time (CPOR) should be connected directly to the CPOR pin and
the VSS pin.
*2. Adjustment capacitor for watchdog output delay time (CWDT) should be connected directly to the CWDT pin
and the VSS pin. A capacitor of 100 pF to 1 μF can be used for CPOR and CWDT.
Figure 58
4. S-19401 Series G / H / I / J / K / L type
WDO
RST
VDD
V
DD
WEN
WDI
C
POR*3
C
WDT*4
VSS CPOR CWDT
R
extW*1
R
extR*2
*1. R
extW is an external pull-up resistor for the WDO
________
pin.
*2. R
extR is an external pull-up resistor for the RST
_______
pin.
*3. Adjustment capacitor for reset output delay time (CPOR) should be connected directly to the CPOR pin and
the VSS pin.
*4. Adjustment capacitor for watchdog output delay time (CWDT) should be connected directly to the CWDT pin
and the VSS pin. A capacitor of 100 pF to 1 μF can be used for CPOR and CWDT.
Figure 59
Caution The above connection diagrams and constants will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constants.
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
33
Precautions
• It will take time for the discharge operation to be performed if the capacitance of CPOR is extremely large at the low
voltage detection, so the discharge operation may not be completed by the time the power supply voltage exceeds
the detection voltage. In that case, since the charge-discharge operation of the CPOR pin is performed after the
discharge operation is completed, the delay time of the same time length as the discharge operation occurs in reset
time-out period (tRST).
• Select a capacitor which satisfies the following equation for CPOR and CWDT. If this condition is not satisfied, the
delay time of the same time length as the discharge operation occurs in tRST since the discharge operation of an
external capacitor connected to the CWDT pin is not completed by the time the CWDT pin initiates the next
charge-discharge operation.
CWDT / CPOR ≤ 600
• When the power supply voltage falls to 0.9 V or lower, set a time interval of 20 μs or longer by the time the power
supply is raised again. If the appropriate time length is not secured, the time-out period after raising the power
supply voltage may get delayed.
• When the time that the power supply voltage falls below the detection voltage is short, the S-19400/19401 Series
may not detect a voltage. In that case, the time-out period after raising the power supply voltage may get delayed.
• Since input pins (the WEN pin, the WDI pin and the W
___
/ T pin) in the S-19400/19401 Series are CMOS
configurations, make sure that an intermediate potential is not input when the S-19400/19401 Series operates.
• Since the WDO
________
pin and the RST
_______
pin are affected by external resistance and external capacitance, use the
S-19400/19401 Series after performing thorough evaluation with the actual application.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
• ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement by
products including this IC of patents owned by a third party.
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
34
Characteristics (Typical Data)
1. Current consumption during operation (I
SS1
) vs. Input voltage (V
DD
)
WDT = OFF, −VDET(S) = 4.0 V, Ta = +25°C
024
0.0
31
5.0
56
3.0
2.0
1.0
I
SS1
[A]
V
DD
[V]
4.0
WDT = ON, −VDET(S) = 4.0 V, WDI input
4.0 5.0 6.0
3.0
5.54.5 6.5
5.0
4.5
4.0
3.5
I
SS1
[A]
V
DD
[V]
Ta =
+
25
C
Ta =
+
125
C
Ta =
40
C
2. Current consumption during operation (I
SS1
) vs. Temperature (Ta)
3. Detection voltage (
−
V
DET
)
,
Release voltage
(
+
V
DET
)
vs. Temperature (Ta)
WDT = ON,
−
V
DET(S)
= 4.0 V, V
DD
= 5.0 V, WDI input
25 0 25 50 75 100 12540
0.0
5.0
Ta [C]
4.0
3.0
2.0
1.0
I
SS1
[A]
−VDET(S) = 4.0 V
25 0 25 50 75 100 12540
3.5
3.0
Ta [C]
4.5
4.0
V
DET
, +V
DET
[V]
+V
DET
V
DET
4. Reset time-out period (t
RST
) vs. Temperature (Ta)
5. Watchdog time-out period (t
WDU
) vs. Temperature (Ta)
VDD = 5.0 V, CPOR = 2200 pF
25 0 25 50 75 100 12540
0
Ta [C]
40
30
20
10
t
RST
[ms]
VDD = 5.0 V, CWDT = 470 pF
25 0 25 50 75 100 12540
0
Ta [C]
40
30
20
10
t
WDU
[ms]
6. Reset output delay time (t
ROUT
) vs. Temperature (Ta) 7. Watchdog output delay time (t
WOUT
)
vs.
Temperature (Ta)
VDD = −VDET(S) + 1.0 V → −VDET(S) − 1.0 V,
CPOR = 2200 pF
25 0 25 50 75 100 12540
0
Ta [C]
40
30
20
10
t
ROUT
[s]
VDD = 5.0 V, CWDT = 470 pF
25 0 25 50 75 100 12540
0
Ta [C]
40
30
20
10
t
WOUT
[s]
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.4_00 S-19400/19401 Series
35
8. Reset time-out period (tRST) vs. CPOR 9. Watchdog time-out period (tWDU) vs. CWDT
VDD = 5.0 V, Ta = +25°C
0.0001
t
RST
[s]
0.0001
C
POR
[F]
10
0.01
0.1
10.001 0.10.01
0.001
1
VDD = 5.0 V, Ta = +25°C
0.0001
t
WDU
[s]
0.001
C
WDT
[F]
100
0.1
1
10.001 0.10.01
0.01
10
10. Nch driver output current (I
WOUT
) vs. Input voltage (V
DD
)
VDS = 0.4 V, −VDET(S) = 4.0 V
024
2.0
315
6.0
4.0
I
WOUT
[mA]
V
DD
[V]
Ta =
+
125
C
Ta =
+
25
C
Ta =
40
C
0.0
AUTOMOTIVE, 125°C OPERATION, 3.8
μ
A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series Rev.2.4_00
36
Power Dissipation
0 25 50 75 100 125 150 175
0.0
0.2
0.4
0.6
0.8
1.0
Ambient temperature (Ta) [°C]
Power dissipation (P
D
) [W]
T
j
= +125°C max.
TMSOP-8
B
A
0 25 50 75 100 125 150 175
0
1
2
3
4
5
Ambient temperature (Ta) [°C]
Power dissipation (P
D
) [W]
T
j
= +125°C max.
HSNT-8(2030)
B
E
D
C
A
Board Power Dissipation (PD) Board Power Dissipation (PD)
A 0.63 W A 0.55 W
B 0.75 W B 0.74 W
C − C 2.50 W
D − D 2.38 W
E − E 3.13 W
(1)
1
2
3
4
(2)
1
2
3
4
Board B
Item Specification
Thermal via -
Material FR-4
Number of copper foil layer 4
Copper foil layer [mm]
Land pattern and wiring for testing: t0.070
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.070
Size [mm] 114.3 x 76.2 x t1.6
2
Copper foil layer [mm]
Land pattern and wiring for testing: t0.070
-
-
74.2 x 74.2 x t0.070
Thermal via -
Material FR-4
Board A
Item Specification
Size [mm] 114.3 x 76.2 x t1.6
Number of copper foil layer
ICMountArea
TMSOP-8 Test Board
No. TMSOP8-A-Board-SD-1.0
ABLIC Inc.
(1)
1
2
3
4
(2)
1
2
3
4
(3)
1
2
3
4
Thermal via Number: 4
Diameter: 0.3 mm
Number of copper foil layer 4
Copper foil layer [mm]
Land pattern and wiring for testing: t0.070
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.070
Board C
Item Specification
Size [mm] 114.3 x 76.2 x t1.6
Material FR-4
Board B
Item Specification
Thermal via -
Material FR-4
Number of copper foil layer 4
Copper foil layer [mm]
Land pattern and wiring for testing: t0.070
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.070
Size [mm] 114.3 x 76.2 x t1.6
2
Copper foil layer [mm]
Land pattern and wiring for testing: t0.070
-
-
74.2 x 74.2 x t0.070
Thermal via -
Material FR-4
Board A
Item Specification
Size [mm] 114.3 x 76.2 x t1.6
Number of copper foil layer
ICMountArea
HSNT-8(2030) Test Board
No. HSNT8-A-Board-SD-2.0
enlargedview
ABLIC Inc.
(4)
1
2
3
4
(5)
1
2
3
4
Thermal via Number: 4
Diameter: 0.3 mm
Number of copper foil layer 4
Pattern for heat radiation: 2000mm
2
t0.070
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.070
74.2 x 74.2 x t0.070
Thermal via -
Size [mm] 114.3 x 76.2 x t1.6
Material FR-4
Board D
Item Specification
Size [mm] 114.3 x 76.2 x t1.6
Material FR-4
Number of copper foil layer
Copper foil layer [mm]
Board E
Item Specification
4
Copper foil layer [mm]
Pattern for heat radiation: 2000mm
2
t0.070
74.2 x 74.2 x t0.035
74.2 x 74.2 x t0.035
ICMountArea
HSNT-8(2030) Test Board
No. HSNT8-A-Board-SD-2.0
enlargedview
enlargedview
ABLIC Inc.
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
2.90±0.2
85
0.2±0.1
0.65±0.1
0.13±0.1
14
TMSOP8-A-PKG Dimensions
No. FM008-A-P-SD-1.2
FM008-A-P-SD-1.2
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
0.30±0.05
1.00±0.1
1.05±0.05
1.5
2.00±0.05
4.00±0.1
3.25±0.05
4.00±0.1
1
4
58
TMSOP8-A-Carrier Tape
Feed direction
No. FM008-A-C-SD-2.0
FM008-A-C-SD-2.0
+0.1
-0
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
16.5max.
13.0±0.3
QTY. 4,000
(60°)
(60°)
13±0.2
Enlarged drawing in the central part
TMSOP8-A-Reel
No. FM008-A-R-SD-1.0
FM008-A-R-SD-1.0
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
2.0±0.1
No. PP008-A-P-SD-2.0
0.5
0.23±0.1
(1.70)
mm
PP008-A-P-SD-2.0
The heat sink of back side has different electric
potential depending on the product.
Confirm specifications of each product.
Do not use it as the function of electrode.
0.08 +0.05
-0.02
HSNT-8-A-PKG Dimensions
14
5
8
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
No. PP008-A-C-SD-1.0
PP008-A-C-SD-1.0
HSNT-8-A-Carrier Tape
0.60±0.05
0.25±0.05
Feed direction
2.0±0.05
4.0±0.1
ø1.5
ø1.0
134
5
2
6
2.3±0.05
4.0±0.1
78
+0.1
-0
+0.1
-0
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
QTY.
No. PP008-A-R-SD-1.0
PP008-A-R-SD-1.0
HSNT-8-A-Reel
5,000
11.4±1.0
9.0
ø13±0.2
(60°) (60°)
Enlarged drawing in the central part
+1.0
- 0.0
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
PP008-A-L-SD-1.0
0.50
0.30
1.6
No. PP008-A-L-SD-1.0
HSNT-8-A
-Land Recommendation
Disclaimers (Handling Precautions)
1. All the information described herein
(product data,
specifications,
figures,
tables,
programs,
algorithms and application
circuit examples,
etc.)
is current as of publishing date of this document and is subject to change without notice.
2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of
any specific mass-production design.
ABLIC Inc. is not responsible for damages caused by the reasons other than the products described herein
(hereinafter "the products") or infringement of third-party intellectual property right and any other right due to the use
of the information described herein.
3. ABLIC Inc. is not responsible for damages caused by the incorrect information described herein.
4. Be careful to use the products within their specified ranges. Pay special attention to the absolute maximum ratings,
operation voltage range and electrical characteristics, etc.
ABLIC Inc. is not responsible for damages caused by failures and / or accidents, etc. that occur due to the use of the
products outside their specified ranges.
5. When using the products, confirm their applications, and the laws and regulations of the region or country where they
are used and verify suitability, safety and other factors for the intended use.
6. When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related
laws, and follow the required procedures.
7. The products must not be used or provided (exported) for the purposes of the development of weapons of mass
destruction or military use. ABLIC Inc. is not responsible for any provision (export) to those whose purpose is to
develop, manufacture, use or store nuclear, biological or chemical weapons, missiles, or other military use.
8. The products are not designed to be used as part of any device or equipment that may affect the human body, human
life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control
systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment,
aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses. Do
not apply the products to the above listed devices and equipments without prior written permission by ABLIC Inc.
Especially, the products cannot be used for life support devices, devices implanted in the human body and devices
that directly affect human life, etc.
Prior consultation with our sales office is required when considering the above uses.
ABLIC Inc. is not responsible for damages caused by unauthorized or unspecified use of our products.
9. Semiconductor products may fail or malfunction with some probability.
The user of the products should therefore take responsibility to give thorough consideration to safety design including
redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing injury or
death, fires and social damage, etc. that may ensue from the products' failure or malfunction.
The entire system must be sufficiently evaluated and applied on customer's own responsibility.
10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the
product design by the customer depending on the intended use.
11. The products do not affect human health under normal use. However, they contain chemical substances and heavy
metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be
careful when handling these with the bare hands to prevent injuries, etc.
12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used.
13. The information described herein contains copyright information and know-how of ABLIC Inc.
The information described herein does not convey any license under any intellectual property rights or any other
rights belonging to ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any
part of this document described herein for the purpose of disclosing it to a third-party without the express permission
of ABLIC Inc. is strictly prohibited.
14. For more details on the information described herein, contact our sales office.
2.2-2018.06
www.ablic.com
