參數(shù)資料
型號(hào): DS1554W-120
英文描述: 256K NV Y2KC Timekeeping RAM
中文描述: 256K內(nèi)存時(shí)鐘非易失Y2KC
文件頁(yè)數(shù): 1/21頁(yè)
文件大?。?/td> 284K
代理商: DS1554W-120
1 of 21
111999
FEATURES
Integrated NV SRAM, real time clock, crystal,
power-fail control circuit and lithium energy
source
Clock registers are accessed identically to the
static RAM; these registers are resident in the
16 top RAM locations
Century byte register; i.e., Y2K complaint
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%
V
CC
power supply tolerance
Lithium energy source is electrically
disconnected to retain freshness until power is
applied for the first time
PIN ASSIGNMENT
DS1554
256K NV Y2KC Timekeeping RAM
PRELIMINARY
www.dalsemi.com
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
IRQ/FT
NC
NC
RST
V
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
33
NC
X1
GND V
BAT
X2
34-Pin POWERCAP MODULE BOARD
(USES DS9034PCX POWERCAP)
RST
A16
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
31
30
29
28
27
26
25
24
23
22
21
20
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ1
DQ2
GND
DQ0
V
CC
NC
IRQ/FT
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
32
19
18
17
32-PIN ENCAPSULATED PACKAGE
相關(guān)PDF資料
PDF描述
DS1554 256K NV Y2KC Timekeeping RAM
DS1554P-70 256K NV Y2KC Timekeeping RAM
DS1554P-100 256K NV Y2KC Timekeeping RAM
DS1554WP-150 256K NV Y2KC Timekeeping RAM
DS1554WP-120 256K NV Y2KC Timekeeping RAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1554W-120+ 功能描述:實(shí)時(shí)時(shí)鐘 256kB NV RAM Timekeeper 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
DS1554W-120IND 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
DS1554W-120IND+ 功能描述:實(shí)時(shí)時(shí)鐘 256kB NV RAM Timekeeper 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
DS1554W-150 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:256K NV Y2KC Timekeeping RAM
DS1554WP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock