Datasheet > AS1925-BSTT-D07

AS1925-BSTT-D07

更新时间： 2024-02-21 17:58:51

品牌	Logo	应用领域
艾迈斯 - AMSCO		微处理器监控
页数	文件大小	规格书
12页	340K
描述
Ultra-Low Voltage Microprocessor Supervisory Circuit with Manual Reset

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AS1925-BSTT-D07 技术参数

生命周期：	Contact Manufacturer	Reach Compliance Code：	unknown
风险等级：	5.72	Base Number Matches：	1

AS1925-BSTT-D07 数据手册

Data Sheet

AS1925, AS1926

Ultra-Low Voltage Microprocessor Supervisory

Circuit with Manual Reset

1 General Description

2 Key Features

ꢀ

Factory-Trimmed Reset Thresholds for Monitoring

Supplies from 0.9 to 1.5V

The AS1925/AS1926 microprocessor supervisory cir-

cuits were designed to assert a single reset if the moni-

tored supply voltage drops below its reset threshold or if

the manual reset is activated. The reset remains

asserted for a fixed timeout delay after VCC has risen

above the reset threshold and the manual reset is deas-

serted.

ꢀ

Low Power Consumption: 3.5µA

Reset Threshold Accuracy Over Temperature:

±2.5%

Their small size, excellent circuit reliability, and low sup-

ply current (3.5µA) make the AS1925/AS1926 a very

low cost solution by eliminating external components

and adjustments when used with low-voltage (+0.9 to

+1.5V) systems.

ꢀ

Four Timeout Periods: 1.5ms, 30ms, 210ms, and

1.68s

Three Reset Output Types:

- Active-Low Push/Pull

- Active-High Push/Pull

- Active Low Open-Drain

The devices are available as the standard products

listed in Table 1.

Table 1. Standard Products

Model

Output Type

ꢀ

Guaranteed Reset Valid to VCC = 0.55V (Active-

Low)

Active-Low Push/Pull,

Active-High Push/Pull

AS1925

ꢀ

Manual Reset Input

Active-High Push/Pull,

Active-Low Open-Drain

AS1926

Immune to Fast VCC Transients

5-pin SOT23 Package

The active-low open-drain reset output requires a pullup

resistor that can be connected to a voltage from 0 to

VCC. The reset comparator was specifically designed to

ignore fast VCC transients.

The devices are available in a 5-pin SOT23 package.

3 Applications

The device is ideal for portable and battery-powered

systems, embedded controllers, intelligent instruments,

automotive systems, telecommunications equipment,

networking equipment, computer workstations and serv-

ers, critical CPU monitoring applications, and any low-

voltage application.

Figure 1. Block Diagram and Pinout

MRN

AS1925/

RESETN

GND

VCC

AS1926

VCC

MRN

Pullup

Manual Reset

Detect

–

VREF

AS1925/

AS1926

RESET

Reset

Output

–

ResetTimeout

Period

RESETN

RESET

MRN

GND

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