X40421V14-C Intersil, X40421V14-C Datasheet - Page 15

IC VOLT MON DUAL SUP/SW 14-TSSOP

X40421V14-C

Manufacturer Part Number
X40421V14-C
Description
IC VOLT MON DUAL SUP/SW 14-TSSOP
Manufacturer
Intersil
Type
Multi-Voltage Supervisorr
Datasheet

Specifications of X40421V14-C

Number Of Voltages Monitored
2
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
Adjustable/Selectable
Voltage - Threshold
1.6V, 2.9V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Figure 15. Random Address Read Sequence
Figure 16. X40410/11 Addressing
Word Address
The word address is either supplied by the master or
obtained from an internal counter.
Operational Notes
The device powers-up in the following state:
– The device is in the low power standby state.
– The WEL bit is set to ‘0’. In this state it is not possi-
– SDA pin is the input mode.
– RESET/RESET Signal is active for
Figure 17. Sequential Read Sequence
General Purpose Memory
Control Register
Fault Detection Register
General Purpose Memory
Control Register
Fault Detection Register
ble to write to the device.
Signals from
Signals from
the Master
the Slave
SDA Bus
Signals from
Signals from
the Master
the Slave
SDA Bus
Word Address
Slave Byte
A7
1
1
1
1
1
15
Address
A6 A5 A4
Slave
0
0
0
1
1
S
a
t
r
t
1
1 0 1
1
1
1
1
1
A
C
K
Address
0
1
1
Slave
1
1
t
0
PURST
0
0
0
A3 A2
0
1
1
Data
(1)
0
0
0
0
.
1
1
A
C
K
A8 R/W
1
0
A1 A0
1
1
X40420, X40421
R/W
R/W
Address
C
A
K
1
1
Byte
Data
(2)
A
C
K
Data Protection
The following circuitry has been included to prevent
inadvertent writes:
– The WEL bit must be set to allow write operations.
– The proper clock count and bit sequence is required
– A three step sequence is required before writing into
– The WP pin, when held HIGH, prevents all writes to
S
a
t
r
t
prior to the stop bit in order to start a nonvolatile
write cycle.
the Control Register to change Watchdog Timer or
Block Lock settings.
the array and all the Register.
Address
A
C
K
Slave
(n is any integer greater than 1)
Data
(n-1)
1
C
A
K
Data
C
A
K
Data
(n)
S
o
p
t
S
o
p
t
May 25, 2006

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