參數(shù)資料
型號： X5649
元件分類： CPU監(jiān)測
英文描述： RTC Module With CPU Supervisor
中文描述： 時鐘模塊CPU監(jiān)控
文件頁數(shù)： 1/22頁
文件大?。?/td> 120K
代理商： X5649
Replaces X25648/X25649
ó
9900-3002.4 2/12/99 T0/C0/D0 RZ
Xicor, Inc. 1999 Patents Pending
1
Characteristics subject to change without notice
X5648/X5649
CPU Supervisor with 64Kb SPI EEPROM
FEATURES
Low Vcc Detection and Reset Assertion
—Five Standard Reset Threshold Voltages
—Re-program Low Vcc Reset Threshold Voltage
using special programming sequence
—Reset Signal Valid to Vcc=1V
Long Battery Life With Low Power Consumption
—<50
m
A Max Standby Current, Watchdog On
—<1
m
A Max Standby Current, Watchdog Off
—<400
m
A Max Active Current during Read
64Kbits 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
—14-Lead SOIC, 8-Lead PDIP
TM
DESCRIPTION
These devices combine three popular functions, Power-
on Reset Control, Supply Voltage Supervision, and Block
Lock Protect Serial EEPROM Memory in one
package. This combination lowers system cost, reduces
board space requirements, and increases reliability.
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
oscillator to stabilize before the processor can execute
code.
The device’s low Vcc detection circuitry protects the
user’s system from low voltage conditions by holding
RESET/RESET active when Vcc falls below a minimum
Vcc trip point. RESET/RESET remains asserted until
Vcc returns to proper operating level and stabilizes. Five
industry standard 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 threshold in applications requiring higher
precision.
BLOCK DIAGRAM
DATA
REGISTER
COMMAND
DECODE &
CONTROL
LOGIC
SI
SO
SCK
CS
V
CC
RESET
TIMEBASE
POWER ON AND
LOW VOLTAGE
GENERATION
V
TRIP
+
-
RESET/RESET
RESET
STATUS
REGISTER
PROTECT LOGIC
16K BITS
16K BITS
32K BITS
E
WP
X5648 = RESET
X5649 = RESET
相關PDF資料
PDF描述
X60003B-50 Precision 5.0V SOT-23 FGA Voltage Reference(5.0V SOT-23 FGA 精密電壓基準)
X60003C-50 Precision 5.0V SOT-23 FGA Voltage Reference(5.0V SOT-23 FGA 精密電壓基準)
X60003D-50 Precision 5.0V SOT-23 FGA Voltage Reference(5.0V SOT-23 FGA 精密電壓基準)
X60003C Precision 5.0V SOT-23 FGA Voltage Reference(精密5.0V SOT-23 FGA電壓基準)
X60003D Precision 5.0V SOT-23 FGA Voltage Reference(精密5.0V SOT-23 FGA電壓基準)
相關代理商/技術參數(shù)
參數(shù)描述
X5649P 功能描述:IC SUPERVISOR CPU 64K EE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)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(jiān)視電壓數(shù)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)
X5649P-2.7 功能描述:IC SUPERVISOR CPU 64K EE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)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(jiān)視電壓數(shù)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)
X5649P-2.7A 功能描述:IC SUPERVISOR CPU 64K EE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)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(jiān)視電壓數(shù)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)
X5649P-4.5A 功能描述:IC SUPERVISOR CPU 64K EE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)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(jiān)視電壓數(shù)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)
X5649PI 功能描述:IC SUPERVISOR CPU 64K EE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 產(chǎn)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(jiān)視電壓數(shù)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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