X5083 Xicor, X5083 Datasheet - Page 4
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X5083
Manufacturer Part Number
X5083
Description
CPU Supervisor with 8Kbit SPI EEPROM
Manufacturer
Xicor
Datasheet
1.X5083.pdf
(21 pages)
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X5083
Resetting the V
This procedure is used to set the V
voltage level. For example, if the current V
and the new V
be reset. When V
thing less than 1.7V. This procedure must be used to
set the voltage to a lower value.
Figure 2. Reset V
Figure 3. Sample V
REV 1.1.6 6/25/02
SCK
WP
CS
SI
V
Adj.
TRIP
0 1 2 3 4 5 6 7
TRIP
TRIP
TRIP
TRIP
WREN
must be 4.0V, then the V
TRIP
06h
Voltage
is reset, the new V
Level Sequence (V
Reset Circuit
V
P
Adjust
Run
TRIP
TRIP
to a “native”
TRIP
CC
0 1 2 3 4 5 6 7 8 9 10
TRIP
is some-
> 3V. WP = 15–18V)
is 4.4V
www.xicor.com
must
V
Write
P
02h
1
2
3
4
= 15-18V
X5083
To reset the new V
V
pin to the programming voltage V
command, followed by a write of data 00h to address
03h. CS going HIGH on the write operation initiates the
V
plete the operation.
Note: This operation also writes 00h to array address
03h.
TRIP
TRIP
8
7
6
5
programming sequence. Bring WP LOW to com-
threshold voltage to the Vcc pin and tie the WP
16 Bits
Address
0003h
20 21 22 23
4.7K
Characteristics subject to change without notice.
TRIP
RESET
voltage, apply the desired
P
. Then send a WREN
Data
SCK
SI
SO
CS
00h
µC
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