- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381159 > UCC2961DR Analog IC PDF資料下載
參數(shù)資料
| 型號： | UCC2961DR |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 156K |
| 代理商： | UCC2961DR |
UCC1946
UCC2946
UCC3946
SLUS247A - SEPTEMBER 1999
FEATURES
Fully Programmable Reset Threshold
Fully Programmable Reset Period
Fully Programmable Watchdog Period
2% Accurate Reset Threshold
VDD Can Go as Low as 2V
18
μ
A Maximum IDD
Reset Valid Down to 1V
Microprocessor Supervisor with Watchdog Timer
6
7
WDI
WP
8
VDD
3
RES
5
POWER TO
CIRCUITRY
A3
A2
A1
A0
CLK
CLR
8-BIT COUNTER
400nA
WDO
1
GND
EDGE DETECT
WATCHDOG TIMING
100mV
1.235V
2
RTH
4
RP
1.235V
.
400nA
POWER ON RESET
BLOCK DIAGRAM
Note: Pinout represents the 8-pin TSSOP package.
UDG-98001
DESCRIPTION
The UCC3946 is designed to provide accurate microprocessor supervi-
sion, including reset and watchdog functions. During power up, the IC
asserts a reset signal RES with VDD as low as 1V. The reset signal re-
mains asserted until the VDD voltage rises and remains above the re-
set threshold for the reset period. Both reset threshold and reset period
are programmable by the user. The IC is also resistant to glitches on
the VDD line. Once RES has been deasserted, any drops below the
threshold voltage need to be of certain time duration and voltage mag-
nitude to generate a reset signal. These values are shown in Figure 1.
An I/O line of the microprocessor may be tied to the watchdog input
(WDI) for watchdog functions. If the I/O line is not toggled within a set
watchdog period, programmable by the user, WDO will be asserted.
The watchdog function will be disabled during reset conditions.
The UCC3946 is available in 8-pin SOIC(D), 8-pin DIP (N or J) and
8-pin TSSOP(PW) packages to optimize board space.
Powered by ICminer.com Electronic-Library Service CopyRight 2003
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC2961N | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| UCC3941D-5 | |
| UCC3941DTR-3 | Current-Mode SMPS Controller |
| UCC3946PWTR | RESET CIRCUIT |
| UCC3960D | CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC2961DTR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| UCC2961N | 功能描述:IC REG CTRLR ISO PWM VM 14-DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| UCC2972N | 功能描述:顯示驅(qū)動器和控制器 CCFL Controller RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| UCC2972NG4 | 功能描述:顯示驅(qū)動器和控制器 BiCMOS Cold Cathode Fluorescent LDC RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| UCC2972PW | 功能描述:顯示驅(qū)動器和控制器 BiCMOS Cold Cathode Fluorescent LDC RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。