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参数资料
| 型号： | DS1554W-120 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDMA32 |
| 封装： | DIP-32 |
| 文件页数： | 12/21页 |
| 文件大小： | 284K |
| 代理商： | DS1554W-120 |
DS1554
2 of 21
ORDERING INFORMATION
DS1554P-XXX
(5-Volt)
-70
70 ns access
-100
100 ns access
blank 32-pin DIP Module
P
34-pin PowerCap Module
board*
*DS1554WP-XXX
(3.3 Volt)
-120
120 ns access
-150
150 ns access
blank 32-pin DIP Module
P
34-pin PowerCap Module
board*
*DS9034PCX (PowerCap) Required:
must be ordered seperately
PIN DESCRIPTION
A0-A14
- Address Input
DQ0-DQ7
- Data Input/Outputs
IRQ
\FT
- Interrupt, Frequency Test Output
(Open Drain)
RST
- Power-On Reset Output
(Open Drain)
CE
- Chip Enable
OE
- Output Enable
WE
- Write Enable
VCC
- Power Supply Input
GND
- Ground
NC
- No Connection
X1, X2
- Crystal Connection
VBAT
- Battery Connection
DESCRIPTION
The DS1554 is a full function, year 2000-compliant (Y2KC), real-time clock/calendar (RTC) with a RTC
alarm, watchdog timer, power-on reset, battery monitor, and 32k x 8 non-volatile static RAM. User
access to all registers within the DS1554 is accomplished with a bytewide interface as shown in Figure 1.
The RTC Registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour
BCD format. Corrections for day of month and leap year are made automatically.
The RTC Registers are double-buffered into an internal and external set. The user has direct access to the
external set. Clock/calendar updates to the external set of registers can be disabled and enabled to allow
the user to access static data. Assuming the internal oscillator is turned on, the internal set of registers are
continuously updated; this occurs regardless of external registers settings to guarantee that accurate RTC
information is always maintained.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1554P-70 | 0 TIMER(S), REAL TIME CLOCK, DMA34 |
| DS1554 | REAL TIME CLOCK, DMA32 |
| DS1556-70 | REAL TIME CLOCK, PDMA32 |
| DS1556W-120 | REAL TIME CLOCK, DMA32 |
| DS1556 | REAL TIME CLOCK, DMA32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1554W-120+ | 功能描述:实时时钟 256kB NV RAM Timekeeper 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 |
| DS1554W-120IND | 功能描述:实时时钟 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 |
| DS1554W-120IND+ | 功能描述:实时时钟 256kB NV RAM Timekeeper 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 |
| DS1554W-150 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:256K NV Y2KC Timekeeping RAM |
| DS1554WP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock |
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