S-1410 Datasheet PDF - Seiko Instruments

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S-1410
Seiko Instruments

Part Number S-1410
Description LOW CURRENT CONSUMPTION WATCHDOG TIMER
Page 29 Pages


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S-1410/1411 Series
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© Seiko Instruments Inc., 2015
LOW CURRENT CONSUMPTION WATCHDOG TIMER
WITH RESET FUNCTION
Rev.1.0_01
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:
Operation temperature range:
Lead-free (Sn 100%), halogen-free
2.0 V to 5.0 V, selectable in 0.1 V step
±1.5%
VDD = 0.9 V to 6.0 V
5% typ.
3.8 μA typ.
14.5 ms typ. (CPOR = 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
*1. The S-1411 Series is fixed to the window mode.
Applications
Power supply monitoring of microcontroller mounted apparatus and system monitoring
Package
TMSOP-8
Seiko Instruments Inc.
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LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-1410/1411 Series
Rev.1.0_01
Block Diagrams
____
1. S-1410 Series (Product with W / T pin)
VDD
WEN
WDI
W/T
Noise
filter
Noise
filter
Noise
filter
CWDT
WDT circuit
VSS
Reference
voltage
circuit
Voltage detection
circuit
CPOR
Figure 1
____
2. S-1411 Series (Product without W / T pin)
CWDT
VDD
WDO
WEN
WDI
Noise
filter
Noise
filter
WDT circuit
RST
WDO
VSS
Reference
voltage
circuit
Voltage detection
circuit
CPOR
Figure 2
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LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.1.0_01
S-1410/1411 Series
Product Name Structure
Users can select the product types, detection voltage 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. Package" regarding
the package drawings.
1. Product name
S-141 x x xx - K8T2 U 4
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications*1
K8T2: TMSOP-8, 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. Refer to the tape drawing.
*2. Refer to "2. Product type list"_.__
*3. 0: S-14_1__0___S__eries (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-14_1__1__S__e_ ries (Product without W / T pin)
The WDO pin outputs the signals which are from the watchdog timer circuit and the voltage detection
circui_t_._____
The RST pin outputs the signal which is from the voltage detection circuit.
The watchdog mode is fixed to the window mode.
Seiko Instruments Inc.
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LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-1410/1411 Series
Rev.1.0_01
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. Package
Package Name
TMSOP-8
Table 2 Package Drawing Codes
Dimension
Tape
FM008-A-P-SD
FM008-A-C-SD
Reel
FM008-A-R-SD
4 Seiko Instruments Inc.



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