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參數(shù)資料
| 型號： | DS1318E+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 14/15頁 |
| 文件大小： | 0K |
| 描述： | IC COUNTER ELAPSED TIME 24-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 62 |
| 類型： | 耗用時間計(jì)數(shù)器 |
| 特點(diǎn)： | 警報(bào)器，方波輸出 |
| 時間格式： | 二進(jìn)制 |
| 數(shù)據(jù)格式： | 二進(jìn)制 |
| 接口： | 并聯(lián) |
| 電源電壓： | 3 V ~ 3.6 V |
| 電壓 - 電源，電池： | 1.6 V ~ 3.7 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-TSSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1433 (CN2011-ZH PDF) |
DS1318
Parallel-Interface Elapsed Time Counter
8
_____________________________________________________________________
Detailed Description
The parallel-interface ETC contains a 44-bit up counter
that maintains the amount of time the counter is
enabled. The resolution of the timer is 244s. A control
register selects which events enable and disable the
counter. The counter is double-buffered into two regis-
ter sets, and the TE bit controls the updating of the
user-readable copy.
The counter can be used to maintain the cumulative
amount of time the primary power source or the battery
powers the device. In this mode, the counter starts
when the internal power-switching circuit enables the
selected power source and stops when the circuit
enables the other source.
The counter can also be used as an external event timer.
In this mode, the counter starts when the signal EXT tog-
gles to the active sate and stops when it toggles to the
inactive state. The active state of the EXT signal is con-
figurable as high or low. EXT is ignored and the counter
is disabled while the device is in power fail.
The interrupt output pin provides two maskable inter-
rupt sources. A 32-bit alarm register allows an interrupt
to be generated whenever the upper 32 bits of the
counter match the alarm register. A periodic interrupt
can also be generated from once every 244s to once
every 1/12,097,152Hz (24.27 days). The alarm and
interrupt output operate when the device is operating
from either supply.
Table 1 shows the factors that control the device oper-
ation. VSO is the battery switchover voltage and is the
lesser of VBAT and VPF. While the device is operating
from the battery with the oscillator running, the battery
Table 1. Operation Modes for Power-Supply Conditions
Pin Description
PIN
NAME
FUNCTION
1
X1
2
X2
Connections for Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is designed for
operation with a crystal having a 12.5pF specified load capacitance (CL). X1 is the input to the
oscillator and can optionally be connected to an external 32.768kHz oscillator. The output of the
internal oscillator, X2, is left unconnected if an external oscillator is connected to X1.
3, 12
GND
Ground. This pin must be connected to ground for proper operation.
4
EXT
External Counter-Enable Input
5–8
A3–A0
Address Bus Inputs
9, 10, 11,
13–17
DQ0–DQ7
Bidirectional Data Pins
18
CE
Chip-Enable Input, Active Low
19
OE
Output-Enable Input, Active Low
20
WE
Write-Enable Input, Active Low
21
SQW
Square-Wave Output
22
IRQ
Interrupt Output. This active-low open-drain pin requires a pullup resistor.
23
VBAT
Battery/Backup Power-Supply Input
24
VCC
DC Power for Primary Power Supply
VCC
CE
OE
WE
DQ0–DQ7
A0–A4
MODE
POWER
VIH
X
High-Z
X
Deselect
Standby
VIL
XVIL
DIN
AIN
Write
Active
VIL
VIH
DOUT
AIN
Read
Active
VCC > VPF
VIL
VIH
High-Z
AIN
Read
Active
VSO < VCC < VPF
X
High-Z
X
Deselect
CMOS Standby
VCC < VSO < VPF
X
High-Z
X
Data
Battery Current
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1318E/GG8 | 制造商:Maxim Integrated Products 功能描述:44 BIT PARALLEL INTFACE ETC 24P TSS - Rail/Tube |
| DS1318E+ | 功能描述:實(shí)時時鐘 Parallel-Interface Elapsed Time Cntr RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1318E+T&R | 制造商:Maxim Integrated Products 功能描述:44 BIT PRLLEL INTFC ETC TRL LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC COUNTER ELAPSED TIME 24TSSOP |
| DS1318E+T&R | 功能描述:實(shí)時時鐘 PARALLEL-INTERFACE ELAPSED TIME COUNTER RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS13-1Y | 功能描述:固態(tài)繼電器-工業(yè)安裝 RoHS:否 制造商:Crydom 控制電壓范圍:4 VDC to 32 VDC 負(fù)載電壓額定值:7 VDC to 72 VDC 負(fù)載電流額定值:160 A 觸點(diǎn)形式: 輸出設(shè)備:SSR 安裝風(fēng)格:Panel |
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