X40010 Xicor, X40010 Datasheet - Page 2

• Manufacturer Part Number: X40010
• Description: Dual Voltage Monitor with Integrated CPU Supervisor
• Manufacturer: Xicor

X40010/X40011/X40014/X40015 – Preliminary
threshold for either voltage monitor to be repro-
grammed to meet special needs or to fine-tune the
threshold for applications requiring higher precision.
The Watchdog Timer provides an independent protec-
tion mechanism for microcontrollers. When the micro-
controller fails to restart a timer within a selectable time
out interval, the device activates the WDO signal. The
user selects the interval from three preset values. Once
selected, the interval does not change, even after
cycling the power.
Dual Voltage Monitors
*Voltage monitor requires V
PIN CONFIGURATION
PIN DESCRIPTION
REV 1.3.4 7/12/02
SOIC TSSOP
X40010/11
X40014/15
1
2
3
4
Device
Pin
-C
-C
-A
-B
-A
-B
3
4
5
6
RESET/RESET
V2MON V2 Voltage Monitor Input. When the V2MON input is less than the V
RESET/
V2FAIL V2 Voltage Fail Output. This open drain output goes LOW when V2MON is less than V
RESET
Name
V2MON
V
V2FAIL
Expected System Voltages
SS
V
CC
SS
3V or 3.3V; 1.1 or 1.2V
to operation. Others are independent of V
X40010/14, X40011/15
goes HIGH when V2MON exceeds V
LOW. This input can monitor an unregulated power supply with an external resistor divider or can
monitor a second power supply with no external components. Connect V2MON to V
when not used.The V2MON comparator is supplied by V2MON (X40010/11) or by V
(X40014/15).
RESET Output. (X40011/15) This is an active LOW, open drain output which goes active when-
ever V
thereafter.
RESET Output. (X40010/14) This is an active HIGH CMOS output which goes active whenever
V
after.
Ground
5V; 3V or 3.3V
3V; 3.3V; 1.8V
3V; 3.3V; 1.5V
CC
1
2
3
4
8-Pin SOIC
3V; 1.5V
falls below V
5V; 3V
CC
falls below V
8
7
6
5
TRIP1
V
WDO
SCL
SDA
CC
TRIP1
. It will remain active until
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. It will remain active until V
4.55–4.65*
4.35–4.45*
2.85–2.95*
2.85–2.95*
2.55–2.65*
2.85–2.95*
Vtrip1(V)
2.0–4.75*
2.0–4.75*
CC
The device features a 2-wire interface and software
protocol allowing operation on an I
TRIP2
.
. There is no power up reset delay circuitry on this pin.
Function
V2MON
V2FAIL
WDO
V
V
CC
CC
X40010/14, X40011/15
rises above V
0.90–3.50*
1.25–1.35*
1.25–1.35*
0.95–1.05*
1.70–4.75
2.85–2.95
2.55–2.65
1.65–1.75
Vtrip2(V)
CC
1
2
3
4
8-Pin TSSOP
Characteristics subject to change without notice.
rises above V
TRIP1
8
7
6
5
TRIP2
TRIP1
and for the t
SCL
SDA
V
RESET/RESET
SS
RESET = X40010
RESET = X40011
RESET = X40014
RESET = X40015
2
voltage, V2FAIL goes
POR (system)
C
®
and for the t
bus.
PURST
SS
CC
TRIP2
or
Input
PURST
V
there-
CC
2 of 25
and