參數(shù)資料
型號(hào): X4283(中文)
元件分類: CPU監(jiān)測
英文描述: RTC Module With CPU Supervisor
中文描述: 時(shí)鐘模塊CPU監(jiān)控
文件頁數(shù): 4/22頁
文件大小: 403K
代理商: X4283(中文)
X4283/85 – Preliminary Information
Characteristics subject to change without notice.
4 of 22
REV 1.17 11/27/00
www.xicor.com
Setting the V
This procedure is used to set the V
lower voltage value. It is necessary to reset the trip
point before setting the new value.
TRIP
Voltage
TRIP
to a higher or
To set the new V
bit in the control register, then apply the desired V
threshold voltage to the V
voltage, V
P
,
to the WP pin and 2 byte address and 1
byte of “00” data. The stop bit following a valid write
operation initiates the V
TRIP
Bring WP
LOW to complete the operation.
TRIP
voltage, start by setting the WEL
TRIP
CC
pin and the programming
programming sequence.
Resetting the V
This procedure is used to set the V
voltage level. For example, if the current V
and the new V
TRIP
must be 4.0V, then the V
be reset. When V
TRIP
is reset, the new V
thing less than 1.7V. This procedure must be used to
set the voltage to a lower value.
TRIP
Voltage
TRIP
to a “native”
is 4.4V
TRIP
TRIP
is some-
must
TRIP
To reset the new V
bit in the control register, apply V
ming voltage, V
P
, to the WP pin and 2 byte address and
1 byte of “00” data. The stop bit of a valid write opera-
tion initiates the V
TRIP
programming sequence. Bring
WP
LOW to complete the operation.
TRIP
voltage start by setting the WEL
and the program-
CC
Figure 2. Reset V
TRIP
Level Sequence (V
CC
> 3V. WP = 12-15V, WEL bit set)
Figure 3. Sample V
TRIP
Reset Circuit
0 1 2 3 4 5 6 7
SCL
SDA
A0h
0 1 2 3 4 5 6 7
00h
WP
V
P
= 12-15V
0 1 2 3 4 5 6 7
03h
0 1 2 3 4 5 6 7
00h
1
2
3
4
8
7
6
5
X4283
V
TRIP
Adj.
V
P
RESET
4.7K
SDA
SCL
μC
Adjust
Run
SOIC
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