- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9329 > DS1284QN (Maxim Integrated Products)IC TIMEKEEPER WATCHDG IND 28PLCC PDF資料下載
參數(shù)資料
| 型號(hào)： | DS1284QN |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 12/18頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC TIMEKEEPER WATCHDG IND 28PLCC |
| 標(biāo)準(zhǔn)包裝： | 37 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，方波輸出，SRAM，監(jiān)視計(jì)時(shí)器 |
| 存儲(chǔ)容量： | 50B |
| 時(shí)間格式： | HH:MM:SS:hh（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 電壓 - 電源，電池： | 2.4 V ~ 3.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 28-PLCC（11.51x11.51） |
| 包裝： | 管件 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
DS1284/DS1286
3 of 18
PIN DESCRIPTION
PIN
DIP
EDIP
PLCC
NAME
FUNCTION
1
INTA
Active-Low Interrupt Output A. This open-drain pin requires a
pullup resistor for proper operation.
2, 3
—
2, 3
X1, X2
Connections for Standard 32.768kHz Quartz Crystal. The internal
oscillator circuitry is designed for operation with a crystal having
a specified load capacitance (CL) of 6pF. The crystal is connected
directly to the X1 and X2 pins. There is no need for external
capacitors or resistors. For more information on crystal selection
and crystal layout considerations, refer to Application Note 58:
Crystal Considerations with Dallas Real Time Clocks.
4
2, 3, 4,
21, 24,
25
4
N.C.
No Connection
5–10
A5–A0
Address Inputs
11, 12,
13, 15,
16–19
11, 12,
13, 15,
16–19
11, 12,
13, 15,
16–19
DQ0, DQ1,
DQ2, DQ3,
DQ4–DQ7
Data Input/Output
14, 21
14
14, 21
GND
Ground
20
CE
Active-Low Chip-Enable Input
22
OE
Active-Low Output-Enable Input
23
SQW
Square-Wave Output. Push-pull output. High impedance when
VCC is below VTP.
24
—
24
RCLR
Active-Low RAM Clear. Used to clear (set to logic 1) all 50
bytes of user NV RAM, but does not affect the registers
involved with time, alarm, and watchdog functions. To clear the
RAM,
RCLR must be forced to an input logic 0 (-0.3V to
+0.8V) during battery-backup mode when VCC is not applied.
The
RCLR function is designed to be used via human interface
(shorting to ground or by switch) and not be driven with external
buffers. This pin is internally pulled up and should be left
floating when not in use.
25
—
25
VBAT
Input for Any Standard 3V Lithium Cell or Other Energy
Source. Input voltage must be held between the minimum and
maximum limits for proper operation. The supply should be
connected directly to the VBAT pin. A diode must not be placed
in series with the battery to the VBAT pin. Furthermore, a diode is
not necessary because reverse charging current-protection
circuitry is provided internal to the device and has passed the
requirements of Underwriters Laboratories for UL listing. This
pin should be grounded but can be left floating.
26
INTB
(INTB)
Active-Low (Active-High) Interrupt Output B. When the active-
high state is selected (IBH = 1), an open-drain pullup transistor
connected to VCC sources current when the output is active.
When the active-low state is selected (IBH = 0), an open-drain
pulldown transistor connected to ground sinks current when the
output is active. If active-high output operation is selected, a
pulldown resistor is required for proper operation. When active-
low output operation is selected, a pullup resistor is required for
proper operation.
27
WE
Active-Low Write-Enable Input
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-BNK-IU-F1 | CONVERTER MOD DC/DC 40V 200W |
| VE-21N-MW | CONVERTER MOD DC/DC 18.5V 100W |
| VI-2NW-MY-F1 | CONVERTER MOD DC/DC 5.5V 50W |
| DS14287 | IC RTC W/NV RAM CNTRL 24-EDIP |
| MCP4261T-104E/SL | IC DGTL POT 100K 2CH 14SOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1284QN/T&R | 制造商:Maxim Integrated Products 功能描述:IC TIMEKEEPER WATCHDG IND 28PLCC |
| DS1284QN/T&R | 功能描述:實(shí)時(shí)時(shí)鐘 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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 |
| DS1284QN+ | 功能描述:實(shí)時(shí)時(shí)鐘 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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 |
| DS1284QN+T&R | 制造商:Maxim Integrated Products 功能描述:IC TIMEKEEPER WATCHDG IND 28PLCC |
| DS1284QN+T&R | 功能描述:實(shí)時(shí)時(shí)鐘 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。