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參數資料
| 型號： | X5645S8-1.8 |
| 元件分類： | EEPROM |
| 英文描述： | SPI Serial EEPROM with Supervisory Features |
| 中文描述： | SPI串行EEPROM，帶有監控功能 |
| 文件頁數： | 1/22頁 |
| 文件大小： | 106K |
| 代理商： | X5645S8-1.8 |
9900-3002.5 3/31/00 EP
Xicor, Inc. 2000 Patents Pending
Characteristics subject to change without notice.
1 of 22
CPU Supervisor with 64Kb SPI EEPROM
X5643/X5645
BLOCK DIAGRAM
Watchdog
Timer Reset
Data
Register
Command
Decode &
Control
Logic
SI
SO
SCK
CS/WDI
V
CC
Reset &
Watchdog
Timebase
Power On and
Low Voltage
Generation
V
TRIP
+
-
RESET/RESET
Reset
Status
Register
Protect Logic
16K Bits
16K bits
32K bits
E
Watchdog Transition
Detector
WP
V
CC
Threshold
Reset logic
X5643 = RESET
X5645 = RESET
Replaces X25643/X25645
FEATURES
Selectable Watchdog Timer
Low V
CC
Detection and Reset Assertion
—Five standard reset threshold voltages
—Re-program low V
using special programming sequence
—Reset signal valid to V
Determine Watchdog or Low Voltage Reset with a
Volatile Flag bit
Long Battery Life With Low Power Consumption
—<50μA max standby current, watchdog on
—<1μA max standby current, watchdog off
—<400μA max active current during read
64K Bits of EEPROM
Built-In Inadvertent Write Protection
—Power-up/power-down protection circuitry
—Protect 0, 1/4, 1/2 or all of EEPROM array with
Block Lock
protection
—In circuit programmable ROM mode
2MHz SPI Interface Modes (0,0 & 1,1)
Minimize EEPROM Programming Time
—32 byte page write mode
—Self-timed write cycle
—5ms write cycle time (typical)
1.8V to 3.6V, 2.7V to 5.5V and 4.5V to 5.5V Power
Supply Operation
Available Packages
—8-lead PDIP, 14-lead SOIC, 20-lead TSSOP
CC
reset threshold voltage
CC
=1V
DESCRIPTION
These devices combine four popular functions, Power-on
Reset Control, Watchdog Timer, Supply Voltage Supervi-
sion, and Block Lock
Protect Serial EEPROM Memory
in one package. This combination lowers system cost,
reduces board space requirements, and increases reli-
ability.
Applying power to the device activates the power on
reset circuit which holds RESET/RESET active for a
period of time. This allows the power supply and oscilla-
tor to stabilize before the processor can execute code.
The Watchdog Timer provides an independent protection
mechanism for microcontrollers. When the microcontrol-
ler fails to restart a timer within a selectable time-out
interval, the device activates the RESET/RESET signal.
The user selects the interval from three preset values.
Once selected, the interval does not change, even after
cycling the power.
The device’s low V
user’s system from low voltage conditions, resetting the
system when V
CC
falls below the minimum V
point. RESET/RESET is asserted until V
proper operating level and stabilizes. Five industry stan-
dard V
TRIP
thresholds are available, however, Xicor’s
unique circuits allow the thresold to be reprogrammed
to meet custom requirements or to fine-tune the thresh-
old for applications requiring higher precision.
CC
detection circuitry protects the
CC
trip
CC
returns to
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相關代理商/技術參數 |
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| X5645S8-2.7 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SPI Serial EEPROM with Supervisory Features |
| X5645X14I-4.5A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| X5648 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CPU Supervisor with 64Kbit SPI EEPROM |
| X5648P | 功能描述:IC SUPERVISOR CPU 64K EE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:推挽式，圖騰柱 復位:低有效 復位超時:最小 145 ms 電壓 - 閥值:2.64V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應商設備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR) |
| X5648P-2.7 | 功能描述:IC SUPERVISOR CPU 64K EE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:推挽式，圖騰柱 復位:低有效 復位超時:最小 145 ms 電壓 - 閥值:2.64V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應商設備封裝:16-TQFN-EP（4x4） 包裝:帶卷 (TR) |
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