- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372535 > X5323V14IZ-2.7A (INTERSIL CORP) CPU Supervisor with 32Kb SPI EEPROM PDF資料下載
參數(shù)資料
| 型號(hào)： | X5323V14IZ-2.7A |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | CPU Supervisor with 32Kb SPI EEPROM |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| 封裝： | ROHS COMPLIANT, PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 360K |
| 代理商： | X5323V14IZ-2.7A |
5
FN8131.1
October 27, 2005
PRINCIPLES OF OPERATION
Power-on Reset
Application of power to the X5323/X5325 activates a
power-on reset circuit. This circuit goes active at about
1V and pulls the RESET/RESET pin active. This signal
prevents the system microprocessor from starting to
operate with insufficient voltage or prior to stabilization
of the oscillator. As long as RESET/RESET pin is
active, the device will not respond to any Read/Write
instruction. When V
CC
exceeds the device V
TRIP
value
for
200ms
(nominal)
RESET/RESET, allowing the processor to begin exe-
cuting code.
the
circuit
releases
Low Voltage Monitoring
During operation, the X5323/X5325 monitors the V
CC
level and asserts RESET/RESET if supply voltage
falls
below
a
preset
RESET/RESET signal prevents the microprocessor
from operating in a power fail or brownout condition.
The RESET/RESET signal remains active until the
voltage drops below 1V. It also remains active until
V
CC
returns and exceeds V
TRIP
for 200ms.
minimum
V
TRIP
.
The
Watchdog Timer
The watchdog timer circuit monitors the microprocessor
activity by monitoring the WDI input. The microprocessor
must toggle the CS/WDI pin periodically to prevent a
RESET/RESET signal. The CS/WDI pin must be tog-
gled from HIGH to LOW prior to the expiration of the
watchdog time out period. The state of two nonvolatile
control bits in the status register determine the watch-
dog timer period. The microprocessor can change
these watchdog bits, or they may be “l(fā)ocked” by tying
the WP pin LOW and setting the WPEN bit HIGH.
V
CC
Threshold Reset Procedure
The X5323/X5325 has a standard V
CC
threshold
(V
TRIP
) voltage. This value will not change over normal
operating and storage conditions. However, in applica-
tions where the standard V
TRIP
is not exactly right, or
for higher precision in the V
TRIP
value, the
X5323/X5325 threshold may be adjusted.
Setting the V
TRIP
Voltage
This procedure sets the V
TRIP
to a higher voltage
value. For example, if the current V
TRIP
is 4.4V and
the new V
TRIP
is 4.6V, this procedure directly makes
the change. If the new setting is lower than the current
setting, then it is necessary to reset the trip point
before setting the new value.
To set the new V
TRIP
voltage, apply the desired V
TRIP
threshold to the Vcc pin and tie the CS/WDI pin and
the WP pin HIGH. RESET/RESET and SO pins are
left unconnected. Then apply the programming voltage
V
P
to both SCK and SI and pulse CS/WDI LOW then
HIGH. Remove V
P
and the sequence is complete.
Figure 1. Set V
TRIP
Voltage
Resetting the V
TRIP
Voltage
This procedure sets the V
TRIP
to a “native” voltage
level. For example, if the current V
TRIP
is 4.4V and the
V
TRIP
is reset, the new V
TRIP
is something less than
1.7V. This procedure must be used to set the voltage
to a lower value.
To reset the V
TRIP
voltage, apply a voltage between
2.7 and 5.5V to the V
CC
pin. Tie the CS/WDI pin, the
WP pin, and the SCK pin HIGH. RESET/RESET and
SO pins are left unconnected. Then apply the pro-
gramming voltage V
P
to the SI pin ONLY and pulse
CS/WDI LOW then HIGH. Remove V
P
and the
sequence is complete.
Figure 2. Reset V
TRIP
Voltage
SCK
SI
V
P
V
P
CS
SCK
SI
V
CC
V
P
CS
X5323, X5325
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X5323V14IZ-4.5A | CPU Supervisor with 32Kb SPI EEPROM |
| X5323V14Z | CPU Supervisor with 32Kb SPI EEPROM |
| X5323S8Z-4.5A | Thyristor Diode Module; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No |
| X5323V14Z-2.7 | EDN12 DB9 EMI/RFI FF 200F |
| X5323P-2.7 | CPU Supervisor with 32Kb SPI EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X5323V14IZ-4.5A | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CPU Supervisor with 32Kb SPI EEPROM |
| X5323V14T1 | 功能描述:IC SUPERVISOR CPU 32K EE 14TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:推挽式，圖騰柱 復(fù)位:低有效 復(fù)位超時(shí):最小 145 ms 電壓 - 閥值:2.64V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR) |
| X5323V14Z | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CPU Supervisor with 32Kb SPI EEPROM |
| X5323V14Z-2.7 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CPU Supervisor with 32Kb SPI EEPROM |
| X5323V14Z-2.7A | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CPU Supervisor with 32Kb SPI EEPROM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。