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参数资料
| 型号： | AS1918Z-T |
| 厂商： | ams |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR ACT LOW SOT23-5 |
| 标准包装： | 1 |
| 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： | 低有效 |
| 复位超时： | 最小为 100 ms |
| 电压 - 阀值： | 2.32V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 其它名称： | AS1918Z-TDKR |
D a t asheet
AS1916 - AS1918
M i c r o p r o c e s s o r S u p e r v i s o r y C i r c u i t s w i t h M a n u a l R e s e t a n d Wa t c h d o g
1 General Description
The AS1916 - AS1918 microprocessor supervisory circuits were
designed to generate a reset when the monitored supply voltage falls
below a factory-trimmed threshold. The reset remains asserted for a
minimum timeout period after the supply voltage stabilizes.
Guaranteed to be in the correct state for V CC higher than +1.0V,
these devices are ideal for portable and battery-powered systems
with strict monitoring requirements.
The devices feature factory-trimmed thresholds to monitor a supply
voltage between 1.8 and 3.6V.
The devices are available with the reset output types listed in Table
Table 1. Standard Products
2 Key Features
V CC Supervisory Range: +1.8 to +3.6V
Guaranteed Reset Valid Down to V CC = +1.0V
Reset Timeout Delay: 215ms
Manual Reset Input
Three Reset Output Types
- Active-Low Push/Pull (AS1916)
- Active-High Push/Pull (AS1917)
- Active-Low Open-Drain (AS1918)
Watchdog Timeout Period: 1.5s
Immune to Fast Negative V CC Transients
Model
AS1916
AS1917
AS1918
Reset Output Type
Active-Low Push/Pull
Active-High Push/Pull
Active-Low Open-Drain
External Components Not Required
Operating Temperature Range: -40 to +125°C
5-pin SOT23 Package
The AS1916 - AS1918 include a manual-reset input for systems that
never fully power down the microprocessor.
Additionally, these devices feature a watchdog timer to help ensure
that the processor is operating within proper code boundaries.
The AS1916 - AS1918 are available in a 5-pin SOT23 package.
3 Applications
The devices are ideal for portable and battery-powered systems,
embedded controllers, intelligent instruments, automotive systems,
and critical CPU monitoring applications.
Figure 1. Typical Application Diagram
I/O Supply
V CC
5
VCC
AS1916/
AS1918
1
RESETN
RESETN
CPU
3
External
Reset
MRN
4
WDI
I/O
GND
GND 2
Revision 1.04
1 - 14
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