参数资料
| 型号： | X5649S14IT1 |
| 厂商： | Intersil |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR CPU 64K EE 14-SOIC |
| 标准包装： | 2,500 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 高有效 |
| 复位超时： | 最小为 100 ms |
| 电压 - 阀值： | 4.38V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOICN |
| 包装： | 带卷 (TR) |
X5648, X5649
PRINCIPLES OF OPERATION
Figure 1. Set V TRIP Voltage
Power-on Reset
Application of power to the X5648/X5649 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
CS
SCK
V P
operate with insufficient voltage or prior to stabilization
of the oscillator. When V CC exceeds the device V TRIP
value for 200ms (nominal) the circuit releases
RESET/RESET, allowing the processor to begin exe-
cuting code.
Low Voltage Monitoring
During operation, the X5648/X5649 monitors the V CC
level and asserts RESET/RESET if supply voltage
falls below a preset minimum V TRIP . 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
V CC returns and exceeds V TRIP for 200ms.
V CC Threshold Reset Procedure
The X5648/X5649 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
V P
SI
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 pin, the WP pin,
and the SCK pin HIGH. RESET/RESET and SO pins
are left unconnected. Then apply the programming volt-
age V P to the SI pin ONLY and pulse CS LOW then
HIGH. Remove V P and the sequence is complete.
Figure 2. Reset V TRIP Voltage
CS
X5648/X5649 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 T RIP
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 V P to
both SCK and SI and pulse CS LOW then HIGH.
Remove V P and the sequence is complete.
3
SCK
SI
V CC
V P
FN8136.0
March 17, 2005
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相关代理商/技术参数 |
参数描述 |
|---|---|
| X5649S14T1 | 功能描述:IC SUPERVISOR CPU 64K EE 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:推挽式，图腾柱 复位:低有效 复位超时:最小 145 ms 电压 - 阀值:2.64V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-WQFN 裸露焊盘 供应商设备封装:16-TQFN-EP（4x4） 包装:带卷 (TR) |
| X5649S8-1.8 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM with Supervisory Features |
| X5649S8-2.7 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM with Supervisory Features |
| X57-02-41569/30 | 制造商:Thomas & Betts 功能描述:VRE22 REPL PART, 30 PER CTN-IEC |
| X57-05-07411 | 制造商:Thomas & Betts 功能描述:BRACKET CAP STRAP EXPORT ONLY |
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