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參數資料
| 型號： | DS1670 |
| 英文描述： | Portable System Controller |
| 文件頁數： | 4/17頁 |
| 文件大小： | 252K |
| 代理商： | DS1670 |
DS1670
4 of 17
POWER-UP/POWER-DOWN CONSIDERATIONS
The DS1670 was designed to operate with a power supply of 3.3 volts. When 3.3 volts are applied within
nominal limits, the device becomes fully accessible after t
RPU
(250 ms typical). Before t
RPU
elapses, all
inputs are disabled. When V
CC
drops below 2.88 volts (typical), the
RST
pin is driven low. When V
CC
drops below the lower of 2.7 volts (typical) or the battery voltage, the device is switched over to the
backup power supply.
During power up, when V
CC
returns to an in-tolerance condition, the
RST
pin is kept in the active state
for 250 ms (typical) to allow the power supply and microprocessor to stabilize.
ADDRESS/COMMAND BYTE
The command byte for the DS1670 is shown in Figure 2. Each data transfer is initiated by a command
byte. Bits 0 through 6 specify the addresses of the registers to be accessed. The MSB (bit 7) is the
Read/Write bit. This bit specifies whether the accessed byte will be read or written. A read operation is
selected if bit 7 is a 0 and a write operation is selected if bit 7 is a 1. The address map for the DS1670 is
shown in Figure 3.
ADDRESS/COMMAND BYTE
Figure 2
7
6
5
4
3
2
1
0
RD
WR
A6
A5
A4
A3
A2
A1
A0
DS1670 ADDRESS MAP
Figure 3
BIT 7
BIT 0
00
01
0
0
10 SECONDS
10 MINUTES
10 HR
24
A/P
0
0
0
0
0
SECONDS
MINUTES
02
0
12
10 HR
HOURS
03
04
05
0
0
0
0
0
DAY
10 DATE
DATE
MONTH
10
MO.
06
07
08
10 YEAR
10 SEC ALARM
10 MIN ALARM
10 HR
24
A/P
0
0
CONTROL REGISTER
STATUS REGISTER
WATCHDOG REGISTER
ADC REGISTER
YEAR
M
M
SECONDS ALARM
MINUTES ALARM
09
M
12
10 HR
HOUR ALARM
0A
0B
0C
0D
0E
0F
7F
M
0
DAY ALARM
RESERVED
相關PDF資料 |
PDF描述 |
|---|---|
| DS1670E | Portable System Controller |
| DS1670S | Portable System Controller |
| DS17285 | 3V/5V Real-Time Clock |
| DS17285-3 | 3V/5V Real-Time Clock |
| DS17285-5 | 3V/5V Real-Time Clock |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1670E | 功能描述:實時時鐘 Portable System Controller 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1670E/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CTRLR SYSTEM PORTABLE 20TSSOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Portable System Controller |
| DS1670E/T&R | 功能描述:實時時鐘 Portable System Controller 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1670E/TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Portable System Controller |
| DS1670E+ | 功能描述:實時時鐘 Portable System Controller 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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