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参数资料
| 型号： | DS1501 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Y2KC Watchdog Real Time Clock(Y2KC看门狗实时时钟) |
| 中文描述： | Y2K兼容、看门狗实时时钟 |
| 文件页数： | 3/22页 |
| 文件大小： | 178K |
| 代理商： | DS1501 |
DS1501/DS1511
071098 3/22
DS1501/DS1511 BLOCK DIAGRAM
Figure 1
CLWATCHDOG
COUNTDOWN
POWER CONTROL
WAND POWER–ON
RESET
16 x 8
CLOCK AND CONTROL
REGISTERS
256 x 8
NV SRAM
CE
WE
OE
RST
PWR
IRQ
SQW
A0–A4
DQ0–DQ7
32.768 kHz
CLOCK OSC
X1
X2
V
CC
V
BAT
V
BAUX
GND
KS
DS1501/DS1511 OPERATING MODES
Table 1
V
CC
CE
OE
WE
DQ0–DQ7
A0–A4
MODE
POWER
IN TOLERANCE
V
IH
X
X
HIGH–Z
X
DESELECT
STANDBY
V
IL
X
V
IL
D
IN
A
IN
WRITE
ACTIVE
V
IL
V
IL
V
IH
D
OUT
A
IN
READ
ACTIVE
V
IL
V
IH
V
IH
HIGH–Z
A
IN
READ
ACTIVE
V
BAT
< V
CC
< TOLERANCE
X
X
X
HIGH–Z
X
DESELECT
CMOS STANDBY
V
CC
< V
BAT
X
X
X
HIGH–Z
X
DATA
RETENTION
BATTERY
CURRENT
DATA READ MODE
The DS1501/DS1511 is in the read mode whenever CE
(chip enable) is low and WE (write enable) is high. The
device architecture allows ripple through access to any
valid address location. Valid data will be available at the
DQ pins within t
AA
(address access) after the last
address input is stable, providing that CE and OE
access times are satisfied. If CE or OE access times are
not met, valid data will be available at the latter of chip
enable access (t
CEA
) or at output enable access time
(t
OEA
). The state of the data input/output pins (DQ) is
controlled by CE and OE. If the outputs are activated
before t
AA
, the data lines are driven to an intermediate
state until t
AA
. If the address inputs are changed while
CE and OE remain valid, output data will remain valid for
output data hold time (t
OH
) but will then go indeterminate
until the next address access. (See Table 1.)
DATA WRITE MODE
The DS1501/DS1511 is in the write mode whenever WE
and CE are in their active state. The start of a write is
referenced to the latter occurring transition of WE or CE.
The addresses must be held valid throughout the cycle.
CE and WE must return inactive for a minimum of t
WR
prior to the initiation of a subsequent read or write cycle.
Data in must be valid t
DS
(data setup) prior to the end of
the write and remain valid for t
DH
(data hold) afterward.
In a typical application, the OE signal will be high during
a write cycle. However, OE can be active provided that
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1501_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Y2K-Compliant Watchdog Real-Time Clocks |
| DS1501-7R | 功能描述:EURO-CASSETTE 100W 15V RoHS:否 类别:电源 - 外部/内部（非板载） >> DC DC Converters 系列:* 标准包装:1 系列:Quint 类型:隔离 输入电压:24V 输出:24V 输出数:1 输出 - 1 @ 电流（最大）:24 VDC @ 50A 输出 - 2 @ 电流（最大）:- 输出 - 3 @ 电流（最大）:- 输出 - 4 @ 电流（最大）:- 功率（瓦特）:1200W 安装类型:底座安装 工作温度:0°C ~ 40°C 效率:- 封装/外壳:模块 尺寸/尺寸:4.33" L x 9.09" W x 6.14" H（110mm x 231mm x 156mm） 包装:散装 电源（瓦特）- 最大:1200W 批准:- 其它名称:277-69722866365-NDQUINT-BAT/24DC/12AH |
| DS1501-DS1511 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Y2K-Compliant Watchdog Real-Time Clocks |
| DS1501W | 功能描述:IC RTC WDOG Y2KC 3.3V 28-DIP RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
| DS1501W+ | 功能描述:实时时钟 Y2K-Compliant Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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