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参数资料
| 型号： | DS1305EN/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/22页 |
| 文件大小： | 0K |
| 描述： | IC RTC SERIAL ALARM IND 20-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，NVSRAM，涓流充电器 |
| 存储容量： | 96B |
| 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： | 2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
DS1305
6 of 22
READING FROM THE CLOCK REGISTERS
Buffers are used to copy the time and date register at the beginning of a read. When reading in burst
mode, the user copy is static while the internal registers continue to increment.
Figure 2. RTC REGISTERS AND ADDRESS MAP
HEX ADDRESS
READ
WRITE
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
RANGE
00h
80h
0
10 Seconds
Seconds
00–59
01h
81h
0
10 Minutes
Minutes
00–59
P
01–12 + P/A
12
A
02h
82h
0
24
10
10 Hour
Hours
00–23
03h
83h
0
Day
1–7
04h
84h
0
10 Date
Date
1–31
05h
85h
0
10 Month
Month
01–12
06h
86h
10 Year
Year
00–99
—
Alarm 0
—
07h
87h
M
10 Seconds Alarm
Seconds Alarm
00–59
08h
88h
M
10 Minutes Alarm
Minutes Alarm
00–59
P
12
A
01–12 + P/A
09h
89h
M
24
10
10 Hour
Hour Alarm
00–23
0Ah
8Ah
M
0
Day Alarm
01–07
—
Alarm 1
—
0Bh
8Bh
M
10 Seconds Alarm
Seconds Alarm
00–59
0Ch
8Ch
M
10 Minutes Alarm
Minutes Alarm
00–59
P
12
A
01–12 + P/A
0Dh
8Dh
M
24
10
10 Hour
Hour Alarm
00–23
0Eh
8Eh
M
0
Day Alarm
01–07
0Fh
8Fh
Control Register
—
10h
90h
Status Register
—
11h
91h
Trickle Charger Register
—
12h–1Fh
92h–9Fh
Reserved
—
20h–7Fh
A0h–FFh
96 Bytes User RAM
00–FF
Note: Range for alarm registers does not include mask’m’ bits.
The DS1305 can be run in either 12-hour or 24-hour mode. Bit 6 of the hours register is defined as the
12- or 24-hour mode select bit. When high, the 12-hour mode is selected. In the 12-hour mode, bit 5 is the
AM/PM bit with logic high being PM. In the 24-hour mode, bit 5 is the second 10-hour bit (20 to 23
hours).
The DS1305 contains two time-of-day alarms. Time-of-day Alarm 0 can be set by writing to registers 87h
to 8Ah. Time-of-day Alarm 1 can be set by writing to registers 8Bh to 8Eh. The alarms can be
programmed (by the INTCN bit of the control register) to operate in two different modes; each alarm can
drive its own separate interrupt output or both alarms can drive a common interrupt output. Bit 7 of each
of the time-of-day alarm registers are mask bits (Table 2). When all of the mask bits are logic 0, a time-
of-day alarm only occurs once per week when the values stored in timekeeping registers 00h to 03h
match the values stored in the time-of-day alarm registers. An alarm is generated every day when bit 7 of
the day alarm register is set to a logic 1. An alarm is generated every hour when bit 7 of the day and hour
alarm registers is set to a logic 1. Similarly, an alarm is generated every minute when bit 7 of the day,
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1305N | 功能描述:实时时钟 Serial Alarm RTC 3-Wire 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 |
| DS1305N+ | 功能描述:实时时钟 Serial Alarm RTC 3-Wire 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 |
| DS1305Z | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Serial Alarm Real-Time Clock(287.74 k) |
| DS1306 | 功能描述:实时时钟 Serial Alarm RTC 3-Wire 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 |
| DS1306_05 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Serial Alarm Real-Time Clock |
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