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參數(shù)資料
| 型號： | DS1314S+T&R |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CTRLR NV W/BATT MON 3V 16SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 控制器類型： | 非易失性 RAM |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°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： | 帶卷 (TR) |
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FEATURES
Converts CMOS SRAM into nonvolatile
memory
Unconditionally write-protects SRAM when
VCC is out of tolerance
Automatically switches to battery backup
supply when VCC power failure occurs
Monitors voltage of a lithium cell and
provides advanced warning of impending
battery failure
Signals low-battery condition on active low
Battery Warning output signal
Automatic VCC power-fail detection for 3.0V
or 3.3V power supplies
Space-saving 8-pin DIP and SOIC packages
Optional 16-pin SOIC and 20-pin TSSOP
versions reset processor when power failure
occurs and hold processor in reset during
system power-up
Industrial temperature range of -40°C to
+85°C
PIN ASSIGNMENT
PIN DESCRIPTION
VCCI
- Power Supply Input
VCCO
- SRAM Power Supply Output
VBAT
- Backup Battery Input
CEI
- Chip Enable Input
CEO
- Chip Enable Output
TOL
- VCC Tolerance Select
BW
- Battery Warning Output
(Open Drain)
RST
- Reset Output (Open Drain)
GND
- Ground
NC
- No Connection
DESCRIPTION
The DS1314 Nonvolatile Controller with Battery Monitor is a CMOS circuit which solves the application
problem of converting CMOS RAM into nonvolatile memory. Incoming power is monitored for an out-
of-tolerance condition. When such a condition is detected, chip enable is inhibited to accomplish write
protection and the battery is switched on to supply the RAM with uninterrupted power. Special circuitry
uses a low-leakage CMOS process which affords precise voltage detection at extremely low battery
consumption.
DS1314
3V Nonvolatile Controller with Lithium Battery Monitor
1
2
3
4
20
19
18
17
5
6
7
8
9
10
11
12
13
14
15
16
NC
VCCI
RST
NC
BW
NC
CEO
NC
CEI
NC
VCCO
NC
VBAT
NC
TOL
NC
GND
DS1314E 20-Pin TSSOP
1
2
3
4
8
7
6
5
GND
TOL
VBAT
VCCO
VCCI
BW
CEO
CEI
DS1314S-2 8-Pin SOIC
(150 mils)
1
2
3
4
8
7
6
5
GND
TOL
VBAT
VCCO
VCCI
BW
CEO
CEI
DS1314 8-Pin DIP
(300 mils)
1
2
3
4
16
15
14
13
5
6
7
8
9
10
11
12
NC
VCCO
NC
VBAT
NC
TOL
NC
GND
NC
VCCI
RST
NC
BW
CEO
NC
CEI
DS1314S 16-Pin SOIC
(300 mils)
19-6307; Rev 6/12
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