參數(shù)資料
型號(hào): DS1543-70
英文描述: 64k NV Timekeeping RAM
中文描述: 64K的非易失內(nèi)存時(shí)鐘
文件頁(yè)數(shù): 1/17頁(yè)
文件大?。?/td> 199K
代理商: DS1543-70
1 of 17
081000
FEATURES
Integrated NV SRAM, real time clock, crystal,
power-fail control circuit and lithium energy
source
Clock registers are accessed identical to the
static RAM. These registers are resident in the
sixteen top RAM locations
Totally nonvolatile with over 10 years of
operation in the absence of power
Precision Power-On Reset
Programmable Watchdog Timer and RTC
Alarm
BCD coded year, month, date, day, hours,
minutes, and seconds with automatic leap year
compensation valid up to the year 2100
Battery voltage level indicator flag
Power-fail write protection allows for
±
10%
Vcc power supply tolerance
Lithium energy source is electrically
disconnected to retain freshness until power is
applied for the first time
ORDERING INFORMATION
DS1543-XXX
(5V)
-70
-100
70 ns access
100 ns access
*DS1543W-XXX
(3.3V)
-120
-150
120 ns access
150 ns access
PIN ASSIGNMENT
PIN DESCRIPTION
A0-A12
DQ0-DQ7
IRQ
\FT
- Address Input
- Data Input/Outputs
- Interrupt, Frequency Test
Output (Open-Drain)
- Power-On Reset Output
(Open-Drain)
- Chip Enable
- Output Enable
- Write Enable
- Power Supply Input
- Ground
- No Connection
RST
CE
OE
WE
V
CC
GND
NC
DS1543
64k NV Timekeeping RAM
PRELIMINARY
www.dalsemi.com
V
WE
IRQ/FT
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RST
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28-Pin Encapsulated Package
(700 Mil Extended)
相關(guān)PDF資料
PDF描述
DS1543W-100 64k NV Timekeeping RAM
DS1543W-70 64k NV Timekeeping RAM
DS1543P 64K NV Real Time Clocks RAM
DS1554-100 256K NV Y2KC Timekeeping RAM
DS1554-70 256K NV Y2KC Timekeeping RAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1543-85 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
DS1543-85+ 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
DS1543P 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:64K NV Real Time Clocks RAM
DS1543P-100 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
DS1543P-100+ 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