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參數(shù)資料
| 型號： | X40420S14IZ-A |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Dual Voltage Monitor with Intergrated CPU Supervisor |
| 中文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| 封裝： | 0.150 INCH, ROHS COMPLIANT, SOIC-14 |
| 文件頁數(shù)： | 4/25頁 |
| 文件大?。?/td> | 395K |
| 代理商： | X40420S14IZ-A |
4
May 25, 2006
6
RESET/
RESET
RESET Output.
(X40421) This open drain pin is an active LOW output which goes LOW whenever
V
CC
falls below V
TRIP1
voltage or if manual reset is asserted. This output stays active for the pro-
grammed time period (t
PURST
) on power-up. It will also stay active until manual reset is released and
for t
PURST
thereafter.
RESET Output.
(X40420) This pin is an active HIGH open drain output which goes HIGH whenever
V
CC
falls below V
TRIP1
voltage or if manual reset is asserted. This output stays active for the pro-
grammed time period (t
PURST
) on power-up. It will also stay active until manual reset is released and
for t
PURST
thereafter.
Ground
Serial Data.
SDA is a bidirectional pin used to transfer data into and out of the device. It has an open
drain output and may be wire ORed with other open drain or open collector outputs. This pin requires
a pull up resistor and the input buffer is always active (not gated).
Watchdog Input.
A HIGH to LOW transition on the SDA (while SCL is toggled from HIGH to LOW
and followed by a stop condition) restarts the Watchdog timer. The absence of this transition within
the watchdog time out period results in WDO going active.
Serial Clock.
The Serial Clock controls the serial bus timing for data input and output.
Write Protect.
WP HIGH prevents writes to any location in the device (including all the registers). It
has an internal pull down resistor. (>10M
typical)
Battery Supply Voltage.
This input provides a backup supply in the event of a failure of the
primary V
CC
voltage. The V
BATT
voltage typically provides the supply voltage necessary to
maintain the contents of SRAM and also powers the internal logic to “stay awake.” If the battery is not
used, connect V
BATT
to ground.
Output Voltage.
(V)
V
OUT
= V
CC
if V
CC
> V
TRIP1
.
IF V
CC
< V
TRIP1
then V
OUT
= V
CC
if V
CC
> V
BATT
+ 0.03V
else V
OUT
= V
BATT
(ie if V
CC
< V
BATT
- 0.03V)
Note:
There is hysteresis around V
BATT
± 0.03V point to avoid oscillation at or near the
switchover voltage. A capacitance of 0.1μF must be connected to V
OUT
to ensure stability.
Battery On.
This CMOS output goes HIGH when the V
OUT
switches to V
BATT
and goes LOW when
V
OUT
switches to V
CC
. It is used to drive an external PNP pass transistor when V
CC
= V
OUT
and current
requirements are greater than 50mA.
The purpose of this output is to drive an external transistor to get higher operating currents when the
V
CC
supply is fully functional. In the event of a V
CC
failure, the battery voltage is applied to the V
OUT
pin and the external transistor is turned off. In this “backup condition,” the battery only needs to supply
enough voltage and current to keep SRAM devices from losing their data–there is no communication
at this time.
7
8
V
SS
SDA
9
SCL
WP
10
11
V
BATT
12
V
OUT
13
BATT-ON
14
V
CC
Supply Voltage
PIN DESCRIPTION
(Continued)
Pin
Name
Function
X40420, X40421
相關PDF資料 |
PDF描述 |
|---|---|
| X40420S14IZ-B | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420S14Z-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420S14Z-B | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420V14IZ-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
| X40420V14Z-A | Dual Voltage Monitor with Intergrated CPU Supervisor |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| X40420S14IZ-AT1 | 制造商:Intersil Corporation 功能描述:PROCESSOR SUPERVISOR 4.6V/2.9V 3000UA 14SOIC - Tape and Reel 制造商:Intersil Corporation 功能描述:Supervisory Circuits DL VAGE CPU SUPS HI IND VTRIP1 4 6 |
| X40420S14IZ-B | 制造商:Intersil Corporation 功能描述:PROCESSOR SUPERVISOR 4.6V/2.6V 3000UA 14SOIC - Rail/Tube |
| X40420S14IZ-BT1 | 制造商:Intersil Corporation 功能描述:PROCESSOR SUPERVISOR 4.6V/2.6V 3000UA 14SOIC - Tape and Reel |
| X40420S14Z-A | 制造商:Intersil Corporation 功能描述:PROCESSOR SUPERVISOR 4.6V/2.9V 3000UA 14SOIC - Rail/Tube |
| X40420S14Z-AT1 | 制造商:Intersil Corporation 功能描述:PROCESSOR SUPERVISOR 4.6V/2.9V 3000UA 14SOIC - Tape and Reel |
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