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参数资料
| 型号： | DS1236 |
| 英文描述： | MicroManager Chip |
| 中文描述： | 微管理器芯片 |
| 文件页数： | 1/19页 |
| 文件大小： | 323K |
| 代理商： | DS1236 |
1 of 19
111899
FEATURES
Holds microprocessor in check during power
transients
Halts and restarts an out-of-control
microprocessor
Monitors pushbutton for external override
Warns microprocessor of an impending power
failure
Converts CMOS SRAM into nonvolatile
memory
Unconditionally write-protects memory when
power supply is out of tolerance
Consumes less than 100 nA of battery current
at 25
°
C
Controls external power switch for high
current applications
Accurate 10% power supply monitoring
Optional 5% power supply monitoring
designated DS1236-5
Provides orderly shutdown in nonvolatile
microprocessor applications
Supplies necessary control for low-power
“stop mode” in battery operated hand-held
applications
Standard 16-pin DIP or space-saving 16-pin
SOIC
Optional industrial temperature range -40
°
C
to +85
°
C
PIN ASSIGNMENT
PIN DESCRIPTION
V
BAT
V
CCO
V
CC
GND
PF
PF
WC/
SC
RC
IN
NMI
ST
CEO
CEI
PBRST
RST
RST
- +3-Volt Battery Input
- Switched SRAM Supply Output
- +5-Volt Power Supply Input
- Ground
- Power-Fail (Active High)
- Power-Fail (Active Low)
- Wake-Up Control (Sleep)
- Reset Control
- Early Warning Input
- Non-Maskable Interrupt
- Strobe Input
- Chip Enable Output
- Chip Enable Input
- Pushbutton Reset Input
- Reset Output (Active Low)
- Reset Output (Active High)
DESCRIPTION
The DS1236 MicroManager Chip provides all the necessary functions for power supply monitoring, reset
control, and memory backup in microprocessor-based systems. A precise internal voltage reference and
comparator circuit monitor power supply status. When an out-of-tolerance condition occurs, the
microprocessor reset and power-fail outputs are forced active, and static RAM control unconditionally
write protects external memory. The DS1236 also provides early warning detection of a user-defined
threshold by driving a non-maskable interrupt. External reset control is provided by a pushbutton reset
DS1236
MicroManager Chip
www.dalsemi.com
16-Pin SOIC (300-mil)
See Mech. Drawings Section
VBAT
VCCO
VCC
GND
RST
RST
PBRST
CEI
CEO
ST
NMI
IN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PF
PF
WC/SC
RCI
16-Pin DIP (300-mil)
See Mech. Drawings Section
VBAT
VCCO
VCC
RST
RST
PBRST
1
2
3
16
15
14
GND
CEI
4
13
PF
PF
WC/SC
CEO
ST
NMI
5
6
7
12
11
10
RC
IN
8
9
相关PDF资料 |
PDF描述 |
|---|---|
| DS1238 | MicroManager |
| DS1239 | MicroManager Chip |
| DS1243 | 0.05uV/C max, Single-Supply CMOS Operational Amplifier 10-MSOP -40 to 125 |
| DS1243Y | 64K NV SRAM with Phantom Clock |
| DS1244Y | Low-Power, 24-Bit ANALOG-TO-DIGITAL CONVERTER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1236+5 | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1236-10 | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1236-10+ | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1236-10N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Supply Supervisor |
| DS1236-5 | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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