X4003 Xicor, X4003 Datasheet - Page 4

• Manufacturer Part Number: X4003
• Description: CPU Supervisor
• Manufacturer: Xicor

X4003/X4005
To set the new V
threshold voltage to the V
the programming voltage V
address 01h. The stop bit following a valid write operation
initiates the V
LOW to complete the operation.
Resetting the V
This procedure is used to set the V
voltage level. For example, if the current V
and the new V
Figure 2. Reset V
Figure 3. Sample V
REV 1.1.3 4/30/02
SCL
V
WP
SDA
Adj.
TRIP
TRIP
TRIP
TRIP
TRIP
0 1 2 3 4 5 6 7
TRIP
must be 4.0V, then the V
programing sequence. Bring WP
TRIP
Voltage
voltage, apply the desired V
Level Sequence (V
RESET
RESET/
A0h
Reset Circuit
CC
P
pin and tie the WP pin to
. Then write data 00hto
4.7K
TRIP
0 1 2 3 4 5 6 7
to a “native”
TRIP
CC
TRIP
> 3V. WP = 15-18V)
1
2
3
4
is 4.4V
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X4003/05
must
V
TRIP
P
= 15-18V
03h
8
7
6
5
be reset. When V
thing less than 1.7V. This procedure must be used to
set the voltage to a lower value.
To reset the new V
V
pin to the programming voltage V
address 03h. The stop bit of a valid write operation ini-
tiates the V
LOW to complete the operation.
TRIP
threshold voltage to the V
0 1 2 3 4 5 6 7
TRIP
Adjust
Run
TRIP
Characteristics subject to change without notice.
programming sequence. Bring WP
00h
V
TRIP
P
is reset, the new V
voltage, apply the desired
CC
P
. Then write 00h to
pin and tie the WP
SCL
SDA
TRIP
µC
is some-
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