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參數(shù)資料
| 型號： | TC70EOA |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | SO-8 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 67K |
| 代理商： | TC70EOA |
1
TC70
TC71
MICROMASTER – SYSTEM
SUPERVISOR WITH POWER SUPPLY
MONITOR, WATCHDOG AND
BATTERY BACKUP
MICROMASTER – SYSTEM SUPERVISOR WITH POWER SUPPLY
MONITOR, WATCHDOG AND BATTERY BACKUP
VCC
VCCO
VBATT
TC70/71
CEI
(TC70)
V
DETECTOR
WATCHDOG
TIMER
WDD
(TC70)
CEO
(TC70)
TDO
(TC71)
VREF1
VREF2
VREF3
PF
(TC71)
TDI
(TC71)
RS
BATTERY
BACK-UP
CONTROL
DELAY
TIMER
GND
PIN CONFIGURATIONS (DIP and SOIC)
1
8
27
3
6
4
5
TC70
1
8
27
3
6
4
5
TC71
CEO
VCCO
GND
CEI
VCC
VCCO
GND
TDI
VCC
WDD
VBATT
RS
TDO
PF
VBATT
RS
ORDERING INFORMATION
Part No.
Package
Temp. Range
TC70COA
8-Pin SOIC
0
°C to +70°C
TC70CPA
8-Pin Plastic DIP
0
°C to +70°C
TC70EOA
8-Pin SOIC
– 40
°C to +85°C
TC70EPA
8-Pin Plastic DIP
– 40
°C to +85°C
TC71COA
8-Pin SOIC
0
°C to +70°C
TC71CPA
8-Pin Plastic DIP
0
°C to +70°C
TC71EOA
8-Pin SOIC
– 40
°C to +85°C
TC71EPA
8-Pin Plastic DIP
– 40
°C to +85°C
FUNCTIONAL BLOCK DIAGRAM
TC70/71
FEATURES
s
Maximum Functional Integration: Precision Power
Supply Monitor, Watchdog Timer, External RESET
Override, Threshold Detector and Battery Backup
Controller in an 8-Pin Package
s
Generates Power-on RESET and Guards Against
Unstable Processor Operation Resulting from
Power "Brownout"
s
Automatically Halts and Restarts an Out-of-
Control Microprocessor
s
Output Can be Wire-ORed, or Hooked to Manual
RESET Push-button Switch
s
Watchdog Disable Pin for Easier Prototyping
(TC70)
s
Voltage Monitor for Power Fail or Low Battery
Warning (TC71)
s
Available in 8-Pin Plastic DIP or 8-Pin SOIC
Packages
s
Cost Effective
TYPICAL APPLICATIONS
s
All Microprocessor-based Systems
s
Test Equipment
s
Instrumentation
s
Set-Top Boxes
GENERAL DESCRIPTION
The TC70/71 is a fully-integrated power supply monitor,
watchdog and battery backup circuit in a space-saving
8-pin package.
When power is initially applied, the TC70/71 holds the
processor in its reset state for a minimum of 500msec after
VCC is in tolerance to ensure stable system start-up. After
start-up, processor sanity is monitored by the on-board
watchdog circuit. The processor must provide periodic high-
to-low level transitions to the TC70/71 to verify proper
execution. Should the processor fail to supply this signal
within the specified timeout period, an out-of-control proces-
sor is indicated and the TC70/71 issues a momentary
processor reset as a result. The TC70 also features a
watchdog disable pin to facilitate system test and debug.
The output of the TC70/71 can be wire-ORed to a push-
button switch (or electronic signal) to reset the processor.
When connected to a push-button switch, the TC70/71
provides contact debounce.
The integrated battery backup circuit on-board the TC70/
71 converts CMOS RAM into nonvolatile memory by first
write-protecting, then switching the VCC line of the RAM over
to an external battery.
The TC71 incorporates an additional 1.3V threshold
detector for power fail warning, low battery detection or to
monitor power supply voltages other than +5V.
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.
TC70/71-1 12/3/96
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC71EOA | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| TC71COA | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| TC74A0-5.0VAT | SPECIALTY ANALOG CIRCUIT, PSFM5 |
| TC74A1-3.3VCTRT | SPECIALTY ANALOG CIRCUIT, PDSO5 |
| TC74A0-3.3VAT | SPECIALTY ANALOG CIRCUIT, PSFM5 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC70EPA | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:MICROMASTER - SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP |
| TC70L3A32K7680 | 功能描述:OSCILLATOR 32.7680 KHZ 3.3V SMD RoHS:是 類別:晶體和振蕩器 >> 振蕩器 系列:TC70 標(biāo)準(zhǔn)包裝:1 系列:VG-4512CA 類型:VCXO 頻率:153.6MHz 功能:三態(tài)（輸出啟用） 輸出:LVPECL 電源電壓:3.3V 頻率穩(wěn)定性:- 工作溫度:-40°C ~ 85°C 電流 - 電源（最大）:60mA 額定值:- 安裝類型:表面貼裝 尺寸/尺寸:0.276" L x 0.197" W（7.00mm x 5.00mm） 高度:0.071"（1.80mm） 封裝/外殼:6-SMD，無引線（DFN，LCC） 包裝:Digi-Reel® 電流 - 電源（禁用）（最大）:- 其它名稱:SER3790DKR |
| TC70L3C32K7680 | 功能描述:OSCILLATOR 32.7680 KHZ 3.3V SMD RoHS:是 類別:晶體和振蕩器 >> 振蕩器 系列:TC70 標(biāo)準(zhǔn)包裝:1 系列:VG-4512CA 類型:VCXO 頻率:153.6MHz 功能:三態(tài)（輸出啟用） 輸出:LVPECL 電源電壓:3.3V 頻率穩(wěn)定性:- 工作溫度:-40°C ~ 85°C 電流 - 電源（最大）:60mA 額定值:- 安裝類型:表面貼裝 尺寸/尺寸:0.276" L x 0.197" W（7.00mm x 5.00mm） 高度:0.071"（1.80mm） 封裝/外殼:6-SMD，無引線（DFN，LCC） 包裝:Digi-Reel® 電流 - 電源（禁用）（最大）:- 其它名稱:SER3790DKR |
| TC70L3I32K7680 | 功能描述:OSCILLATOR 32.7680 KHZ 3.3V SMD RoHS:是 類別:晶體和振蕩器 >> 振蕩器 系列:TC70 標(biāo)準(zhǔn)包裝:1 系列:VG-4512CA 類型:VCXO 頻率:153.6MHz 功能:三態(tài)（輸出啟用） 輸出:LVPECL 電源電壓:3.3V 頻率穩(wěn)定性:- 工作溫度:-40°C ~ 85°C 電流 - 電源（最大）:60mA 額定值:- 安裝類型:表面貼裝 尺寸/尺寸:0.276" L x 0.197" W（7.00mm x 5.00mm） 高度:0.071"（1.80mm） 封裝/外殼:6-SMD，無引線（DFN，LCC） 包裝:Digi-Reel® 電流 - 電源（禁用）（最大）:- 其它名稱:SER3790DKR |
| TC70L5A32K7680 | 功能描述:OSCILLATOR 32.7680 KHZ 3.3V SMD RoHS:是 類別:晶體和振蕩器 >> 振蕩器 系列:TC70 標(biāo)準(zhǔn)包裝:1 系列:VG-4512CA 類型:VCXO 頻率:153.6MHz 功能:三態(tài)（輸出啟用） 輸出:LVPECL 電源電壓:3.3V 頻率穩(wěn)定性:- 工作溫度:-40°C ~ 85°C 電流 - 電源（最大）:60mA 額定值:- 安裝類型:表面貼裝 尺寸/尺寸:0.276" L x 0.197" W（7.00mm x 5.00mm） 高度:0.071"（1.80mm） 封裝/外殼:6-SMD，無引線（DFN，LCC） 包裝:Digi-Reel® 電流 - 電源（禁用）（最大）:- 其它名稱:SER3790DKR |
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