19
FN8118.3
December 9, 2015
Power-Up and Power-Down Timing
RESET
Output Timing
Notes: (8) This parameter is periodically sampled and not 100% tested.
Symbol Parameter Min. Typ. Max. Unit
V
TRIP
Reset trip point voltage, X4043/45-4.5A
Reset trip point voltage, X4043/45
Reset trip point voltage, X4043/45-2.7A
Reset trip point voltage, X4043/45-2.7
4.5
4.25
2.85
2.55
4.62
4.38
2.92
2.62
4.75
4.5
3.0
2.7
V
t
PURST
Power-up reset time out 100 200 400 ms
t
RPD
(8)
V
CC
detect to RESET/RESET 10 20 µs
t
F
(8)
V
CC
fall time 20 mV/µs
t
R
(8)
V
CC
rise time 20 mV/µs
V
RVALID
Reset valid V
CC
1V
t
WDO
Watchdog time out period,
WD1 = 1, WD0 = 0
WD1 = 0, WD0 = 1
WD1 = 0, WD0 = 0
100
450
1
200
600
1.4
300
800
2
ms
ms
sec
t
RSP
Watchdog Time Restart pulse width 1 µs
t
RST
Reset time out 100 200 400 ms
V
CC
t
PURST
t
PURST
t
R
t
F
t
RPD
0 Volts
V
TRIP
RESET
V
RVALID
RESET
V
RVALID
(X4043)
(X4045)
X4043, X4045
20
FN8118.3
December 9, 2015
Watchdog Time Out For 2-Wire Interface
V
TRIP
Set/Reset Conditions
< t
WDO
t
RST
(4043) RESET
SDA
Start
t
WDO
t
RST
SCL
Start
t
RSP
WDT
Restart
Start
SDA
SCL
Minimum Sequence to Reset WDT
Clockin (0 or 1)
SCL
SDA
V
CC
(V
TRIP
)
WP
t
TSU
t
THD
t
VPH
t
VPS
V
P
t
WC
t
VPO
0
7
70 7
sets V
TRIP
01h*
03h*
resets V
TRIP
0
Start
* all others reserved
A0h 00h
X4043, X4045
21
FN8118.3
December 9, 2015
V
TRIP
Programming Specifications: V
CC
= 2.0-5.5V; Temperature = 25°C
ABOUT INTERSIL
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
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Reliability reports are also available from our website at www.intersil.com/support
Parameter Description Min. Max. Unit
t
VPS
WP Program Voltage Setup time 10 µs
t
VPH
WP Program Voltage Hold time 10 µs
t
TSU
V
TRIP
Level Setup time 10 µs
t
THD
V
TRIP
Level Hold (stable) time 10 µs
t
WC
V
TRIP
Program Cycle 10 ms
t
VPO
Program Voltage Off time before next cycle 1 ms
V
P
Programming Voltage 15 18 V
V
TRAN
V
TRIP
Set Voltage Range 2.0 4.75 V
V
tv
V
TRIP
Set Voltage variation after programming (-40 to +85°C). -25 +25 mV
t
VPS
WP Program Voltage Setup time 10 µs
REVISION HISTORY
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make sure that
you have the latest revision.
DATE REVISION CHANGE
December 9, 2015 FN8118.3 Updated Ordering Information Table on page 2.
Added Revision History and About Intersil sections.
X4043, X4045

X4043S8-2.7T1

Mfr. #:
Manufacturer:
Renesas / Intersil
Description:
IC SUPERVISOR CPU 4K EE 8-SOIC
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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