X40420 XICOR [Xicor Inc.], X40420 Datasheet - Page 16

• Manufacturer Part Number: X40420
• Description: Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
• Manufacturer: XICOR [Xicor Inc.]

X40420/X40421 – Preliminary
D.C. OPERATING CHARACTERISTICS (Continued)
(Over the recommended operating conditions unless otherwise specified)
Notes: (1) The device enters the Active state after any start, and remains active until: 9 clock cycles later if the Device Select Bits in the Slave
EQUIVALENT INPUT CIRCUIT FOR VxMON (x = 1, 2)
REV 1.2.14 7/12/02
V
Second Supply Monitor
V
V
Symbol
t
t
V
CC
RPDL
RPD2
TRIP1
TRIP2
V
HYS
V
OL
Supply
(2) The device goes into Standby: 200ns after any stop, except those that initiate a high voltage write cycle; t
(3) Negative numbers indicate charging current, positive numbers indicate discharge current.
(4) V
(5) At 25°C, V
(6) See ordering information for standard programming levels. For custom programming levels, contact factory.
(7) Based on characterization data only.
(7)
(7)
(7)
(6)
(6)
Address Byte are incorrect; 200ns after a stop ending a read operation; or t
tiates a high voltage cycle; or 9 clock cycles after any start that is not followed by the correct Device Select Bits in the Slave Address
Byte.
IL
Schmitt Trigger Input Hysteresis
• Fixed input level
•
Output LOW Voltage (SDA, RESET/
RESET, LOWLINE, V2FAIL, WDO)
V
V
V2MON Reset Trip Point Voltage Range
V
Min. and V
V
CC
TRIP
TRIP
V
REF
CC
Reset Trip Point Voltage Range
1
2
CC
related level
to LOWLINE
to V2FAIL
= 3V.
IH
Max. are for reference only and are not tested.
VxMON
Parameter
R
C
V
REF
www.xicor.com
.05 x
t
RPDX
Min.
4.55
2.85
2.85
2.55
1.55
+
–
0.2
2.0
0.9
V
CC
= 5µs worst case
Typ.
4.6
2.9
2.9
2.6
1.6
WC
Output
(5)
after a stop ending a write operation.
Max.
4.75
4.65
2.95
2.95
2.65
1.65
Characteristics subject to change without notice.
0.4
3.5
5
5
Unit
µS
µS
V
V
V
V
V
I
I
A, B Version
C Version
A Version
B Version
C Version
OL
OL
Test Conditions
= 3.0mA (2.7–5.5V)
= 1.8mA (2.4–3.6V)
WC
after a stop that ini-
V = 100mV
16 of 25