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參數(shù)資料
| 型號： | DS1236A |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | MicroManager Chip(微管理器芯片) |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16 |
| 封裝： | 0.300 INCH, DIP-16 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 209K |
| 代理商： | DS1236A |
DS1236A
MicroManager Chip
DS1236A
022698 1/19
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
DS1236A-5
Provides orderly shutdown in nonvolatile micropro-
cessor 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
IN
VBAT
VCCO
VCC
GND
PF
RC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RST
RST
PBRST
CEI
CEO
ST
NMI
PF
WC/SC
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
VBAT
VCCO
VCC
GND
PF
PF
WC/SC
RC
RST
RST
PBRST
CEI
CEO
ST
NMI
IN
16-Pin SOIC (300 Mil.)
See Mech. Drawings
Section
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 DS1236A MicroManager Chip provides all the nec-
essary functions for power supply monitoring, reset
control, and memory backup in microprocessor-based
systems. A precise internal voltage reference and com-
parator 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 DS1236A also provides early warning de-
tection of a user-defined threshold by driving a
non-maskable interrupt. External reset control is pro-
vided by a pushbutton reset input which is debounced
and activates reset outputs. An internal watchdog timer
can also force the reset outputs to the active state if the
strobe input is not driven low prior to watchdog time-out.
Reset control and wake-up/sleep control inputs also
provide the necessary signals for orderly shutdown and
start-up in battery backup and battery operated applica-
tions. A block diagram of the DS1236A is shown in
NO TAG.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1236 | MicroManager Chip(微管理器芯片) |
| DS1238A | MicroManager(微管理器芯片) |
| DS1238 | MicroManager(微管理器芯片) |
| DS1239 | MicroManager Chip(微管理器芯片) |
| DS1250AB | 4096K Nonvolatile SRAM(4096K 非易失性靜態(tài)RAM) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1236A-10 | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1236A-10+ | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1236A-10N | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1236A-10N+ | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1236A-5 | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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