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參數(shù)資料
| 型號： | DS1216B |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | XO, clock |
| 英文描述： | SmartWatch/RAM 16K/64K(16K/64K位帶實(shí)時(shí)時(shí)鐘的掉電保護(hù)RAM插座) |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, DIP28 |
| 封裝： | 0.600 INCH, SOCKET, DIP-28 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 89K |
| 代理商： | DS1216B |
DS1216B
SmartWatch/RAM 16K/64K
DS1216B
031998 1/10
FEATURES
Keeps track of hundredths of seconds, seconds, min-
utes, hours, days, date of the month, months, and
years
Converts standard 2K x 8 and 8K x 8 CMOS static
RAMs into nonvolatile memory
Embedded lithium energy cell maintains watch infor-
mation and retains RAM data
Watch function is transparent to RAM operation
Month and year determine the number of days in each
month; leap year compensation valid up to 2100
Lithium energy source is electrically disconnected to
retain freshness until power is applied for the first time
Proven gas–tight socket contacts
Full
±
10% operating range
Operating temperature range 0
°
C to 70
°
C
Accuracy is better than
±
1 min./month @ 25
°
C
PIN ASSIGNMENT
RST
1
2
3
4
5
6
7
8
9
10
DQ0
11
12
13
GND 14
28
V
CC
WE
27
26
V
CC
25
24
23
22
OE
21
20
CE
19
18
17
16
15
28–PIN INTELLIGENT SOCKET
PIN DESCRIPTION
All Pins Pass Through Except 20, 26, 28
Pin 1
RST
– Reset
Pin 11
DQ0
– Data Input/Output 0
Pin 14
GND
–Ground
Pin 20
CE
–Conditioned Chip Enable
Pin 22
OE
– Output Enable
Pin 26
V
CC
– Switched V
CC
for 24–Pin RAM
Pin 27
WE
– Write Enable
Pin 28
V
CC
–
Switched V
CC
for 28–Pin RAM
DESCRIPTION
The DS1216B SmartWatch/RAM 16/64K is a 28–pin,
600 MIL wide DIP socket with a built–in CMOS watch
function, a nonvolatile RAM controller circuit, and an
embedded lithium energy source. It accepts either
24–pin 2K x 8 or 28–pin 8K x 8 JEDEC bytewide CMOS
static RAM. When the socket is mated with a CMOS
SRAM, it provides a complete solution to problems as-
sociated with memory volatility and uses a common en-
ergy source to maintain time and date. A key feature of
the SmartWatch is that the watch function remains
transparent to the RAM. The SmartWatch monitors V
CC
for an out–of–tolerance condition. When such a condi-
tion occurs, an internal lithium energy source is auto-
matically switched on and write protection is uncondi-
tionally enabled to prevent loss of watch and RAM data.
Using the SmartWatch saves PC board space since the
combination of SmartWatch and the mated RAM take
up no more area than the memory alone. The Smart-
Watch uses pins 28, 27, 26, 22, 20, 11, and 1 for RAM
and watch control. All other pins are passed straight
through to the socket receptacle.
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PDF描述 |
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| DS1216C | SmartWatch/RAM 16K/65K(16K/65K位帶實(shí)時(shí)時(shí)鐘的掉電保護(hù)RAM插座) |
| DS1216D(中文) | Using the Dallas Phantom Real Time Clocks(256K/1M位帶實(shí)時(shí)時(shí)鐘的帶掉電保護(hù)SRAM插座) |
| DS1216D | Using the Dallas Phantom Real Time Clocks(256K/1M位帶實(shí)時(shí)時(shí)鐘的帶掉電保護(hù)SRAM插座) |
| DS1216E | SmartWatch/RAM 16K/66K(16K/66K帶實(shí)時(shí)時(shí)鐘的ROM或掉電保護(hù)RAM插座) |
| DS1216F | SmartWatch/ROM 64K/256K/1M(64K/256K/1M位帶實(shí)時(shí)時(shí)鐘的ROM或掉電保護(hù)RAM插座) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1216C | 功能描述:存儲(chǔ)器控制器 SmartWatch RAM RoHS:否 制造商:Maxim Integrated |
| DS1216D | 功能描述:存儲(chǔ)器控制器 SmartWatch RAM RoHS:否 制造商:Maxim Integrated |
| DS1216E | 功能描述:存儲(chǔ)器控制器 SmartWatch ROM RoHS:否 制造商:Maxim Integrated |
| DS1216F | 功能描述:IC SMART/ROM 3V 64/256/1M 32DIP RoHS:否 類別:集成電路 (IC) >> 存儲(chǔ)器 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:45 系列:- 控制器類型:靜態(tài) RAM（SRAM） 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件 |
| DS1216F-3 | 功能描述:IC SMART/ROM 3V 64/256/1M 32DIP RoHS:否 類別:集成電路 (IC) >> 存儲(chǔ)器 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:45 系列:- 控制器類型:靜態(tài) RAM（SRAM） 電源電壓:4.5 V ~ 5.5 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件 |
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