參數(shù)資料
型號： DS1211
英文描述： Nonvolatile Controller x 8 Chip
中文描述： 1帶8非易失控制器芯片
文件頁數(shù)： 1/1頁
文件大小： 14K
代理商： DS1211
1 of 1
111899
VCCI
VBAT2
VBAT1
VCCO
TOL
PF
CE7
CE6
C
B
A
GND
CE
CE0
CE1
CE2
CE3
NC
CE4
CE5
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VBAT1
VCCO
TOL
PF
CE7
CE6
C
B
A
GND
VCCI
VBAT2
CE
CE0
CE1
CE2
CE3
NC
CE4
CE5
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
20-Pin DIP (300-mil)
See Mech. Drawings
Section
PIN DESCRIPTION
A, B, C
20-Pin SOIC (300-mil)
See Mech. Drawings
Section
FEATURES
Converts full CMOS RAMs into nonvolatile
memories
Unconditionally write protects when V
CC
is
out of tolerance
Automatically switches to battery when
power-fail occurs
3 to 8 decoder provides control for up to eight
CMOS RAMs
Consumes less than 100 nA of battery current
Tests battery condition on power-up
Provides for redundant batteries
Power-fail signal can be used to interrupt
processor on power failure
Optional 5% or 10% power-fail detection
Optional 20-pin SOIC surface mount package
Optional industrial temperature range of
-40°C to +85°C
PIN ASSIGNMENT
- Address Inputs
CE
- Chip Enable Input
CE0
-
CE7
GND
V
BAT1
V
BAT2
TOL
V
CCI
V
CC0
- Chip Enable Outputs
- Ground
- + Battery 1
- + Battery 2
- Power Supply Tolerance
- +5V Supply
- RAM Supply
- Power-fail
- No Connection
PF
NC
DESCRIPTION
The DS1211 Nonvolatile Controller x 8 Chip is a CMOS circuit which solves the application problem of
converting CMOS RAMs into nonvolatile memories. Incoming power is monitored for an out-of-
tolerance condition. When such a condition is detected, the chip enables are inhibited to accomplish write
protection and the battery is switched on to supply RAMs with uninterrupted power. Special circuitry
uses a low-leakage CMOS process which affords precise voltage detection at extremely low battery
consumption.
By combining the DS1211 nonvolatile controller/decoder chip and lithium batteries, nonvolatile RAM
operation can be achieved for up to eight CMOS memories.
See the data sheet for the DS1212 Nonvolatile Controller x 16 Chip for electrical specifications and
operation.
DS1211
Nonvolatile Controller x 8 Chip
www.dalsemi.com
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1211+ 功能描述:IC CONTROLLER 8-CHIP NV 20-DIP RoHS:是 類別:集成電路 (IC) >> 存儲器 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:45 系列:- 控制器類型:靜態(tài) RAM（SRAM） 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
DS1211N 功能描述:IC CONTROLLER 8-CHIP NV 20-DIP RoHS:否 類別:集成電路 (IC) >> 存儲器 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:45 系列:- 控制器類型:靜態(tài) RAM（SRAM） 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
DS1211-N 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Nonvolatile Controller
DS1211N+ 功能描述:IC CONTROLLER 8-CHIP NV 20-DIP RoHS:是 類別:集成電路 (IC) >> 存儲器 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:45 系列:- 控制器類型:靜態(tài) RAM（SRAM） 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
DS1211S 功能描述:IC CONTROLLER 8-CHIP NV 20-SOIC RoHS:否 類別:集成電路 (IC) >> 存儲器 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:45 系列:- 控制器類型:靜態(tài) RAM（SRAM） 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
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