X40430 INTERSIL [Intersil Corporation], X40430 Datasheet - Page 2

• Manufacturer Part Number: X40430
• Description: Triple Voltage Monitor with Integrated CPU Supervisor
• Manufacturer: INTERSIL [Intersil Corporation]

BLOCK DIAGRAM
*Voltage monitor requires Vcc to operate. Others are independent of Vcc.
PIN CONFIGURATION
PIN DESCRIPTION
Pin
X40430, X40431
X40434, X40435
1
2
3
4
(V1MON)
V3MON
V2MON
Device
LOWLINE Early Low V
V2MON
V
V2FAIL
SDA
SCL
Name
WP
-A
-B
-C
-A
-B
-C
CC
NC
*X40430, X40431=
X40434, X40435 = V
LOWLINE
V2 Voltage Fail Output. This open drain output goes LOW when V2MON is less than V
HIGH when V2MON exceeds V
V2 Voltage Monitor Input. When the V2MON input is less than the V
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
V2MON comparator is supplied by V2MON (X40430, X40431) or by the V
V
No connect.
V2MON
CC
RESET
V2FAIL
5V; 3V or 3.3V; 1.8V
5V; 3V or 3.3V; 1.5V
Expected System
5V; 3 or 3.3V; 1.2V
3.3V; 2.5V; 1.8V
V
Decode Test
> V
5V; 3.3V; 1.5V
MR
NC
Command
SS
& Control
5V; 3V; 1.8V
Register
Voltages
Logic
Data
TRIP1
14-Pin SOIC, TSSOP
2
X40430, X40434
1
2
3
4
5
6
7
V2MON
CC
.
CC
Detect. This CMOS output signal goes LOW when
X40430, X40431, X40434, X40435
14
13
12
11
10
V
9
8
CC
Logic
Monitor
4.55–4.65*
4.35–4.45*
2.95–3.05*
4.55–4.65*
4.55–4.65*
4.55–4.65*
V
WDO
V3FAIL
V3MON
WP
SCL
SDA
Vtrip1(V)
2.0–4.75*
2.0–4.75*
CC
V3 Monitor
TRIP2
Logic
V2 Monitor
. There is no power-up reset delay circuitry on this pin.
Fault Detection
Logic
EEPROM
+
-
Register
Register
Status
Array
V
TRIP1
+
-
Function
V
0.90–3.50*
1.25–1.35*
1.25–1.35*
0.95–1.05*
TRIP3
Vtrip2(V)
1.70–4.75
2.85–2.95
2.55–2.65
2.15–2.25
+
-
LOWLINE
V2MON
V2FAIL
RESET
V
V
V2MON*
TRIP2
CC
V
MR
NC
SS
or
Manual Reset
Reset Logic
Low Voltage
Generation
Watchdog
14-Pin SOIC, TSSOP
Power-on,
Reset
X40431, X40435
and
1
2
3
4
5
6
7
V
TRIP2
CC
Vtrip3(V)
1.70–4.75
1.65–1.75
1.65–1.75
1.65–1.75
1.70–4.75
3.05–3.15
2.85–2.95
2.85–2.95
SS
< V
14
13
12
11
10
CC
voltage, V2FAIL goes LOW.
9
8
or
TRIP1
input (X40434, X40435).
V
V
WDO
V3FAIL
V3MON
WP
SCL
SDA
CC
CC
and goes high when
when not used. The
RESET = X40430
RESET = X40431
RESET = X40434
RESET = X40435
TRIP2
X40430/34
X40431/35
(system)
RESET
RESET
LOWLINE
POR
and goes
V3FAIL
V2FAIL
WDO
MR
July 29, 2005
FN8251.0