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參數資料
| 型號： | CAT1161WI-30-T3 |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | 0.150 INCH, ROHS COMPLIANT, MS-012, SOIC-8 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 188K |
| 代理商： | CAT1161WI-30-T3 |
CAT1161, CAT1162
2007 Catalyst Semiconductor, Inc.
1
Doc. No. 3002 Rev. F
Characteristics subject to change without notice
Supervisory Circuits with I
2C Serial CMOS EEPROM,
Precision Reset Controller and Watchdog Timer (16K)
FEATURES
Watchdog monitors SDA signal (CAT1161)
400kHz I
2C bus compatible
2.7V to 6.0V operation
Low power CMOS technology
16-Byte page write buffer
Built-in inadvertent write protection
—
VCC lock out
—
Write protect pin, WP
Active high or low reset
—
Precision power supply voltage monitor
—
5V, 3.3V and 3V systems
—
Five threshold voltage options
1,000,000 Program/Erase cycles
Manual Reset
100 Year data retention
8-pin DIP or 8-pin SOIC
Commercial and industrial temperature ranges
DESCRIPTION
The CAT1161/2 is a complete memory and supervi-
sory solution for microcontroller-based systems. A se-
rial EEPROM memory (16K) with hardware memory
write protection, a system power supervisor with
brown out protection and a watchdog timer are
integrated together in low power CMOS technology.
Memory interface is via an I
2C bus.
The 1.6-second watchdog circuit returns a system to a
known good state if a software or hardware glitch
halts or “hangs” the system. The CAT1161 watchdog
monitors the SDA line, making an additional PC board
trace unnecessary. The lower cost CAT1162 does not
have a watchdog timer.
The power supply monitor and reset circuit protects
memory and system controllers during power up/down
and against brownout conditions. Five reset threshold
voltages support 5V, 3.3V and 3V systems. If power
supply voltages are out of tolerance reset signals
become active, preventing the system microcontroller,
ASIC or peripherals from operating. Reset signals
become inactive typically 200ms after the supply
voltage exceeds the reset threshold level. With both
active high and low reset signals, interface to
microcontrollers and other ICs is simple. In addition, a
reset pin can be used as a debounced input for push-
button manual reset capability.
The CAT1161/2 memory features a 16-byte page. In
addition, hardware data protection is provided by a
write protect pin WP and by a VCC sense circuit that
prevents writes to memory whenever VCC falls below
the reset threshold or until VCC reaches the reset
threshold during power up.
Available packages include an 8-pin DIP and a
surface mount, 8-pin SO package.
PIN CONFIGURATION
PDIP 8 Lead
SOIC 8 Lead
DC
1
8
VCC
RESET
2
7
RESET
WP
3
6
SCL
GND
4
5
SDA
CAT1161
CAT1162
PIN FUNCTIONS
Pin Name
Function
DC
Do not Connect
RESET
Active Low Reset I/O
WP
Write Protect
GND
Ground
SDA
Serial Data/Address
SCL
Clock Input
RESET
Active High Reset I/O
VCC
Power Supply
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CAT1161WI42 | 功能描述:監控電路 16K I2C Memory w/WDT RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT1161WI-42-G | 功能描述:監控電路 CPU w/16K RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT1161WI-42-GT3 | 功能描述:監控電路 CPU w/16K RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT1161WI-42-T3 | 功能描述:監控電路 CPU Supervisor with 16K EEPROM RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| CAT1161WI45 | 功能描述:監控電路 16K I2C Memory w/WDT RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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