最新免费av在线观看,亚洲综合一区成人在线,中文字幕精品无码一区二区三区,中文人妻av高清一区二区,中文字幕乱偷无码av先锋

BQ4015X-85 Datasheet

  • BQ4015X-85

  • Texas Instruments [512Kx8 Nonvolatile SRAM]

  • 543.26KB

  • TI

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

bq4015/Y
512Kx8 Nonvolatile SRAM
Features
鉃?/div>
Data retention for at least 10
years without power
鉃?/div>
Automatic write-protection during
power-up/power-down cycles
鉃?/div>
Conventional SRAM operation,
including unlimited write cycles
鉃?/div>
Internal isolation of battery be-
fore power application
鉃?/div>
Industry standard 32-pin DIP
pinout
鉃?/div>
34-pin LIFETIME LITHIUM鈩?/div>
module
-
-
Snap-on power-source for
lithium battery backup
Replaceable power-source
(part number: bq40MS)
is unconditionally write-protected to
prevent an inadvertent write opera-
tion.
At this time the integral energy
source is switched on to sustain the
memory until after V
CC
returns
valid.
The bq4015/Y uses extremely low
standby current CMOS SRAMs, cou-
pled with small lithium coin cells to
provide nonvolatility without long
write-cycle times and the write-cycle
limitations associated with EE-
PROM.
The bq4015/Y requires no external
circuitry and is compatible with the
industry-standard 4Mb SRAM pin-
out.
General Description
The CMOS bq4015/Y is a nonvola-
tile 4,194,304-bit static RAM organ-
ized as 524,288 words by 8 bits. The
integral control circuitry and lith-
ium energy source provide reliable
nonvolatility coupled with the un-
limited write cycles of standard
SRAM.
The control circuitry constantly
monitors the single 5V supply for an
out-of-tolerance condition. When
V
CC
falls out of tolerance, the SRAM
-
Module completely
surface-mounted
Pin Connections
Pin Names
A0鈥揂18
Address inputs
DQ0鈥揇Q7 Data input/output
NC
A15
A16
NC
V
CC
WE
OE
CE
DQ
7
DQ
6
DQ
5
DQ
4
DQ
3
DQ
2
DQ
1
DQ
0
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
A18
A17
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VCC
A15
A17
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
CE
OE
WE
NC
V
CC
V
SS
Chip enable input
Output enable input
Write enable input
No connect
Supply voltage input
Ground
34-Pin LIFETIME LITHIUM Module
PN4015Yncm.eps
32-Pin DIP Module
PN401501.eps
Selection Guide
Part
Number
bq4015x -70
bq4015x -85
Maximum
Access
Time (ns)
70
85
Negative
Supply
Tolerance
-5%
-5%
Part
Number
bq4015Yx -70
bq4015Yx -85
Maximum
Access
Time (ns)
70
85
Negative
Supply
Tolerance
-10%
-10%
Note:
x = MA for PDIP or MS for LIFETIME LITHIUM module.
5/99 E
1

BQ4015X-85相關(guān)型號(hào)PDF文件下載

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫(kù)提出的寶貴意見，您的參與是維庫(kù)提升服務(wù)的動(dòng)力！意見一經(jīng)采納，將有感恩紅包奉上哦！