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参数资料
| 型号： | DS1239 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | MicroManager Chip(微管理器芯片) |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16 |
| 封装： | 0.300 INCH, DIP-16 |
| 文件页数： | 1/4页 |
| 文件大小： | 55K |
| 代理商： | DS1239 |
DS1239
MicroManager Chip
DS1239
022698 1/4
FEATURES
Provides necessary control for start up and shutdown
of power supply from keyboard
Holds microprocessor in check during power
transients
Halts and restarts an out-of-control microprocessor
Monitors push button 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
Controls external power switch for high current
applications
Accurate 10% power supply monitoring
Optional 5% power supply monitoring designated
DS1239-5
Provides
orderly
shutdown
microprocessor applications
Supplies necessary control for low-power “stop
mode” in battery operate hand-held applications
Standard 16-pin DIP or space-saving 16-pin SOIC
Optional industrial temperature range -40
°
C to +85
°
C
in
nonvolatile
PIN ASSIGNMENT
IN
VBAT
VCCO
VCC
GND
PF
PSO
PF
WC/SC
PSI
RST
PBRST
CEI
CEO
ST
NMI
DS1239 16-Pin DIP
(300 Mil)
See Mech Drawings
Section
1
11
10
12
13
14
2
3
4
5
6
7
8
9
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VBAT
VCCO
VCC
GND
PF
PF
WC/SC
PSI
PSO
RST
PBRST
CEI
CEO
ST
NMI
IN
DS1239 16-Pin SOIC
(300 Mil)
See Mech. Drawings
Section
PIN DESCRIPTION
V
BAT
V
CCO
V
CC
GND
PF
PF
WC/SC
PSI
IN
NMI
ST
CEO
CEI
PBRST
RST
PSO
– +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)
– Power Supply Control Input
– Early Warning Input
– Non-Maskable Interrupt
– Strobe Input
– Chip Enable Output
– Chip Enable Input
– Pushbutton Reset Input
– Reset Output (Active low)
– Power Supply Control Outputs
DESCRIPTION
The DS1239 MicroManager provides all the necessary
functions for power supply control and monitoring, reset
control, and memory backup in microprocessor-based
systems. Using the DS1239, an AC power switch is no
longer required for microprocessor-based systems. A
keyboard control system for power supply start up and
shutdown is provided through the use of the Power Sup-
ply Control Input and Output. In other respects, the
DS1239 is functionally identical to a DS1236 in the
NMOS mode. For a complete description of the other
DS1239 features, refer to the DS1236 data sheet.
Pin-out of the DS1239 is identical to the DS1236 with
two exceptions. The RC and RST pins have been re-
placed with PSI and PSO, respectively. Other pins and
functions operate exactly as the DS1236 in NMOS
mode.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1250AB | 4096K Nonvolatile SRAM(4096K 非易失性静态RAM) |
| DS1250Y | 4096K Nonvolatile SRAM(4096K 非易失性静态RAM) |
| DS1250W | 3.3V 4096K Nonvolatile SRAM(3.3V 4096K 非易失性静态RAM) |
| DS1251Y | 4096K NV SRAM with Phantom Clock(带幻影时钟的4096K NV 静态RAM) |
| DS1258AB | 128K x 16 Nonvolatile SRAM(128K x 16 非易失性静态RAM) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1239-10 | 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 |
| DS1239-10+ | 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 |
| DS1239-10N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| DS1239-5 | 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 |
| DS1239-5+ | 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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