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参数资料
| 型号： | PST621DDB |
| 厂商： | MITSUMI ELECTRIC CO LTD |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, DIP8 |
| 封装： | DIP-8 |
| 文件页数： | 1/6页 |
| 文件大小： | 361K |
| 代理商： | PST621DDB |
MITSUMI
System Reset (with battery back-up) PST620, 621
System Reset (with battery back-up)
Monolithic IC PST620, 621
Outline
Features
1. Low current consumption
2. Capacitors (super capacitor, large capacity chemical capacitor) are used for back-up power supply, lowering
system cost
3. Stable 1-chip microcomputer crystal oscillator rise time maintained with the built-in pulse shaver.
4. In addition to power outage detection for main power supply (+5V), there are built-in pins to detect AC power
supply and +5V power supply primary side
5. Reset signal output by back-up power supply (super capacitor, large capacity chemical capacitor) detection
Applications
1. VCR
2. Audio equipment
3. Communications equipment
4. Rice cookers, etc.
Pin Assignment
Pin Description
14
3
2
85
6
7
PST620
Pin No.
Pin name
Function
1
VAC
Has +2.0V detection voltage to detect AC power supply and
stable power supply primary side, for quick power outage detection.
2
VCC1
+5V main power supply
3
VCC2
Back-up power supply (back-up capacitor connected)
4
TC
Pulse width setting pin for pulse shaver
(capacitor and resistor connected)
5
RE
Reset output
6
PSCONT
Pulse shaver ON/OFF switching High : OFF Low : ON
7
CE
Chip enable signal output
8
GND
Package
DIP-8B (PST620DDB, PST621DDB)
SOP-8C (PST620DFT, PST621DFT)
These ICs are part of the regular series of back-up ICs, and use capacitors (super capacitor, large capacity
chemical capacitor) as back-up power supply. They control 1-chip microcomputer high-speed, low-speed,
and stand-by modes (MNI control).
These ICs also are capable of controlling data save in EPROM and other nonvolatile memories during power outage.
Products
to
be
discontinued
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| PST621DFT | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| PST7019M | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| PST7025M | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PST623 | 制造商:MITSUMI 制造商全称:Mitsumi Electronics, Corp. 功能描述:System Reset |
| PST623XS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Detector |
| PST623XW | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Detector |
| PST-7 | 制造商:Panduit Corp 功能描述: |
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