參數(shù)資料
型號: X40239
廠商: Intersil Corporation
英文描述: Triple Voltage Monitors, POR, 2 kbit EEPROM MEMORY, and Single/Dual DCP
中文描述: 三電壓監(jiān)測器,葡萄牙,2千比特EEPROM存儲器,以及單/雙副處長
文件頁數(shù): 21/36頁
文件大?。?/td> 541K
代理商: X40239
21
FN8115.0
April 11, 2005
MR: Manual Reset
The RESET output can be forced HIGH externally using
the Manual Reset (MR) input. MR is a de-bounced, TTL
compatible input, and so it may be operated by con-
necting a push-button directly from V
CC
to the MR pin.
RESET remains HIGH for time t
PURST
after MR has
returned to its LOW state (See Figure 19). An exter-
nal “pull down” resistor is required to hold this pin
(normally) LOW.
X4023x Write Permission Status
MR
RESET
V
CC
0 Volts
0 Volts
t
PURST
Figure 19. Manual Reset Response
0 Volts
V
TRIP1
Slave
Address
Address Byte
A
C
K
A
C
K
S
t
a
r
t
S
t
o
p
Slave
Address
Data
A
C
K
S
t
a
r
t
SDA Bus
Signals from the
Slave
Signals from the
Master
Figure 20. CR Register Read Command Sequence
0 1 0 0 1 0
1
1 0 1 0 0 1 0
WRITE Operation
“Dummy” Write
READ Operation
CS7 … CS0
0
1
Block Lock
Bits
BL0
x
1
0
x
1
0
WP
1
1
1
0
0
0
DCP Volatile Write
Permitted
NO
NO
YES
NO
NO
YES
DCP Nonvolatile
Write Permitted
NO
NO
NO
NO
NO
YES
Write to EEPROM
Permitted
NO
NO
NO
Not in locked region
Not in locked region
Yes (All Array)
Write to CR Register
Permitted
Volatile Bits
YES
YES
YES
YES
YES
YES
BL1
1
x
0
1
x
0
Nonvolatile Bits
NO
NO
NO
YES
YES
YES
X40231, X40233, X40235, X40237, X40239
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