參數(shù)資料
型號(hào)： X5328V14I
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
封裝： PLASTIC, TSSOP-14
文件頁(yè)數(shù)： 15/21頁(yè)
文件大?。?/td> 388K
代理商： X5328V14I
X5328/X5329
Characteristics subject to change without notice.
3 of 21
REV 1.1.3 11/13/02
www.xicor.com
PRINCIPLES OF OPERATION
Power On Reset
Application of power to the X5328/X5329 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 start-
ing to operate with insufcient voltage or prior to stabili-
zation of the oscillator. When VCC exceeds the device
VTRIP value for 200ms (nominal) the circuit releases
RESET/RESET, allowing the processor to begin exe-
cuting code.
Low Voltage Monitoring
During operation, the X5328/X5329 monitors the VCC
level and asserts RESET/RESET if supply voltage falls
below a preset minimum VTRIP. The 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 VCC returns and exceeds
VTRIP for 200ms.
VCC Threshold Reset Procedure
The X5328/X5329 has a standard VCC threshold
(VTRIP) voltage. This value will not change over normal
operating and storage conditions. However, in applica-
tions where the standard VTRIP is not exactly right, or
for higher precision in the VTRIP value, the X5328/
X5329 threshold may be adjusted.
Setting the VTRIP Voltage
This procedure sets the VTRIP to a higher voltage
value. For example, if the current VTRIP is 4.4V and the
new VTRIP is 4.6V, this procedure directly makes the
change. If the new setting is lower than the current set-
ting, then it is necessary to reset the trip point before
setting the new value.
To set the new VTRIP voltage, apply the desired VTRIP
threshold to the VCC pin and tie the CS pin and the WP
pin HIGH. RESET/RESET and SO pins are left uncon-
nected. Then apply the programming voltage VP to
both SCK and SI and pulse CS LOW then HIGH.
Remove VP and the sequence is complete.
Figure 1. Set VTRIP Voltage
Resetting the VTRIP Voltage
This procedure sets the VTRIP to a “native” voltage
level. For example, if the current VTRIP is 4.4V and the
VTRIP is reset, the new VTRIP is something less than
1.7V. This procedure must be used to set the voltage to
a lower value.
To reset the VTRIP voltage, apply a voltage between 2.7
and 5.5V to the VCC pin. Tie the CS pin, the WP pin,
and the SCK pin HIGH. RESET/RESET and SO pins
are left unconnected. Then apply the programming volt-
age VP to the SI pin ONLY and pulse CS LOW then
HIGH. Remove VP and the sequence is complete.
Figure 2. Reset VTRIP Voltage
SCK
SI
VP
CS
SCK
SI
VCC
VP
CS
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X5328V14I-2.7 功能描述:IC SUPERVISOR CPU 32K EE 14TSSOP RoHS:否 類(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR)
X5328V14I-2.7A 功能描述:IC SUPERVISOR CPU 32K EE 14TSSOP RoHS:否 類(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR)
X5328V14I-2.7T1 功能描述:IC SUPERVISOR CPU 32K EE 14TSSOP RoHS:否 類(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR)
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