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| 型号： | SP690TEN-L |
| 厂商： | Exar Corporation |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU LP 8NSOIC |
| 标准包装： | 98 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 3.08V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 管件 |
| 其它名称： | 1016-1222-5 |
V BATT
BATTERY-SWITCHOVER
CIRCUITRY
V OUT
V OUT
1
8
V BATT
V CC
GND
PFI
2
3
4
7
6
5
RESET (RESET)*
WDI
PFO
V CC
1.25V
RESET
GENERATOR
RESET
(RESET)*
*( ) SP805 only
3.5V
Figure 10. Pinout
PIN ASSIGNMENTS
WDI
WATCHDOG
TIMER
Pin 1 —V OUT — Output Supply Voltage. V OUT
connects to V CC when V CC is greater than
V BATT and V CC is above the reset thresh-
old. When V CC falls below V BATT and
V CC is below the reset threshold, V OUT
connects to V BATT . Connect a 0.1 μ F
capacitor from V OUT to GND.
PFI
0.8V
1.25V
*( ) SP805 only
PFO
Pin 2 — V CC — +5V Supply Input
Pin3 — GND — Ground reference for all signals
Pin 4 — PFI — Power-Fail Input. This is the
noninverting input to the power-fail com-
parator. When PFI is less than 1.25V,
PFO goes low. Connect PFI to GND or
V OUT when not used.
Pin 5 — PFO — Power-Fail Output.
Pin 6 — WDI — Watchdog Input. WDI is a
three level input. If WDI remains high or
low for 1.6sec, the internal watchdog timer
triggers a reset. If WDI is left floating or
connected to a high-impedance tri-state
buffer, the watchdog feature is disabled.
The internal watchdog timer clears when-
ever reset is asserted.
Pin 7 for SP690A/692A/802 only — RESET
(Active Low)– Reset Output. RESET Out-
put goes low whenever V CC falls below
the reset threshold or whenever WDI
remains high or low longer than 1.6
seconds. RESET remains low for 200ms
after V CC crosses the reset threshold
voltage on power-up or after being trig-
gered by WDI.
Figure 11. Internal Block Diagram
Pin 7 for SP805 only — RESET (Active High)–
Reset Output is the inverse of RESET;
when RESET is asserted, the RESET
output voltage = V CC or V BATT ,
whichever is higher.
Pin 8 — V BATT — Backup-Battery Input. When
V CC falls below the reset threshold, V BATT
will be switched to V OUT if V BATT is
20mV greater than V CC . When V CC rises
20mV above V BATT , V OUT will be
reconnected to V CC . The 40mV
hysteresis prevents repeated switching if
V CC falls slowly.
Date: 11/29/04
SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over
4
? Copyright 2004 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP690TEN-L/TR | 功能描述:监控电路 LW PWR MICRO 5.5V TEMP -40C to 85C RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| SP690TEP | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP691 AL | 制造商:Thomas & Betts 功能描述:Flush Service Floor Boxes |
| SP691A | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP691A_05 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Low Power Microprocessor Supervisory with Battery Switch-Over |
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