S-1410/1411 Series
www.sii-ic.com
105°C OPERATION,
3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER
WITH RESET FUNCTION
Rev.2.1
_00
© SII Semiconductor Corporation, 2015-2017
The S-1410/1411 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.
Features
•
Detection voltage:
•
Detection voltage accuracy:
•
Input voltage:
•
Hysteresis width:
•
Current consumption:
•
Reset time-out period:
•
Watchdog operation is switchable:
•
Watchdog operation voltage range:
•
Watchdog mode switching function
*1
:
•
Watchdog input edge is selectable:
•
Product type is selectable:
2.0 V to 5.0 V, selectable in 0.1 V step
±1.5%
V
DD
= 0.9 V to 6.0 V
5% typ.
3.8
μA
typ.
14.5 ms typ. (C
POR
= 2200 pF)
Enable, Disable
2.5 V to 6.0 V
Time-out mode, window mode
Rising edge, falling edge, both rising and falling edges
S-1410 Series
___
________
(Product with W / T pin (Output: WDO pin))
S-1411 Series
___
_______
________
(Product without W / T pin (Output: RST pin, WDO pin))
Ta =
−40°C
to
+105°C
•
Operation temperature range:
•
Lead-free (Sn 100%), halogen-free
*1.
The S-1411 Series is fixed to the window mode.
Applications
•
Power supply monitoring of microcontroller mounted apparatus and system monitoring
Packages
•
TMSOP-8
•
HSNT-8(2030)
1
105°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.1
_00
S-1410/1411 Series
Block Diagrams
1.
S-1410 Series (Product with W / T pin)
CWDT
VDD
WEN
WDI
W/T
Noise
filter
Noise
filter
Noise
filter
WDO
Voltage detection
circuit
WDT circuit
____
VSS
Reference
voltage
circuit
CPOR
Figure 1
2.
S-1411 Series (Product without W / T pin)
CWDT
____
VDD
WEN
WDI
Noise
filter
Noise
filter
WDT circuit
RST
WDO
Voltage detection
circuit
VSS
Reference
voltage
circuit
CPOR
Figure 2
2
105°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.1
_00
S-1410/1411 Series
Product Name Structure
Users can select the product type, detection voltage, and package type for the S-1410/1411 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-141
x
x
xx
-
xxxx
U
4
Environmental code
U:
Lead-free (Sn 100%), halogen-free
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.)
Product type 1
*2
A to L
Product type 2
*3
0, 1
*1.
*2.
*3.
Refer to the tape drawing.
Refer to "2.
Product type list".
___
0: S-1410 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-1411 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.
3
105°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.1
_00
S-1410/1411 Series
2.
Product type list
Product Type
A
B
C
D
E
F
G
H
I
J
K
L
WEN Pin Logic
Active "H"
Active "H"
Active "H"
Active "L"
Active "L"
Active "L"
Active "H"
Active "H"
Active "H"
Active "L"
Active "L"
Active "L"
Table 1
Input Edge
Rising edge
Falling edge
Both rising and falling edges
Rising edge
Falling edge
Both rising and falling edges
Rising edge
Falling edge
Both rising and falling edges
Rising edge
Falling edge
Both rising and falling edges
Output Pull-up Resistor
Available
Available
Available
Available
Available
Available
Unavailable
Unavailable
Unavailable
Unavailable
Unavailable
Unavailable
3.
Packages
Table 2
Package Name
TMSOP-8
HSNT-8(2030)
Dimension
FM008-A-P-SD
PP008-A-P-SD
Package Drawing Codes
Tape
FM008-A-C-SD
PP008-A-C-SD
Reel
FM008-A-R-SD
PP008-A-R-SD
Land
−
PP008-A-L-SD
4
105°C OPERATION, 3.8
μA
CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.1
_00
S-1410/1411 Series
Pin Configuration
1.
TMSOP-8
Top view
1
2
3
4
8
7
6
5
___
Table 3
Pin No.
1
2
3
4
5
6
7
8
S-1410 Series (Product with W / T pin)
Symbol
W / T
*1
CPOR
CWDT
VSS
WEN
________
WDO
WDI
VDD
___
Description
Watchdog mode switching pin
Reset time-out period adjustment pin
Watchdog time adjustment pin
GND pin
Watchdog enable pin
Watchdog output pin
Watchdog input pin
Voltage input pin
Figure 3
Table 4
Pin No.
1
2
3
4
5
6
7
8
*1.
W / T pin = "H": Time-out mode
___
W / T pin = "L": Window mode
___
S-1411 Series (Product without W / T pin)
Symbol
RST
CPOR
CWDT
VSS
WEN
________
WDO
WDI
VDD
_______
___
Description
Reset output pin
Reset time-out period adjustment pin
Watchdog time adjustment pin
GND pin
Watchdog enable pin
Watchdog output pin
Watchdog input pin
Voltage input pin
5
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