DS1248P Datasheet PDF - Dallas Semiconducotr
| Part Number | DS1248P | |
| Description | 1024k NV SRAM with Phantom Clock | |
| Manufacturers | Dallas Semiconducotr | |
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There is a preview and DS1248P download ( pdf file ) link at the bottom of this page. Total 21 Pages | ||
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DS1248/DS1248P
1024k NV SRAM with Phantom Clock
www.maxim-ic.com
FEATURES
§ Real-time clock (RTC) keeps track of
hundredths of seconds, minutes, hours, days,
date of the month, months, and years
§ 128k x 8 NV SRAM directly replaces
volatile static RAM or EEPROM
§ Embedded lithium energy cell maintains
calendar operation and retains RAM data
§ Watch function is transparent to RAM
operation
§ Month and year determine the number of
days in each month; valid up to 2100
§ Full 10% operating range
§ Operating temperature range: 0°C to +70°C
§ Over 10 years of data retention in the
absence of power
§ Lithium energy source is electrically
disconnected to retain freshness until power
is applied for the first time
§ DIP Module only
§ Standard 32-pin JEDEC pinout
§ PowerCap® Module Board only
- Surface mountable package for direct
connection to PowerCap containing
battery and crystal
- Replaceable battery (PowerCap)
- Pin for pin compatible with DS1244P
and DS1251P
PIN ASSIGNMENT
RST
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 VCC
31 A15
30 NC
29 WE
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 DQ7
20 DQ6
19 DQ5
18 DQ4
17 DQ3
32-Pin Encapsulated Package
740mil Flush
RST
A15
A16
NC
VCC
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
1 34
2 33
3 32
4 31
5 30
6 29
7 28
8 27
9 26
10 25
11 24
12 23
13 22
14 21
15
16
X1 GND VBAT X2
20
19
17 18
34-Pin PowerCap Module Board
(Uses DS9034PCX PowerCap)
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
PowerCap is a registered trademark of Dallas Semiconductor.
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112801
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PHANTOM CLOCK REGISTER DEFINITION Figure 1
DS1248/DS1248P
Note: The pattern recognition in Hex is C5, 3A, A3, 5C, C5, 3A, A3, 5C. The odds of this pattern being
accidentally duplicated and causing inadvertent entry to the phantom clock is less than 1 in 1019. This
pattern is sent to the phantom clock LSB to MSB.
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for DS1248P electronic component. |
| Information | Total 21 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ DS1248P.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| DS1248 | The function is 1024k NV SRAM with Phantom Clock. Dallas Semiconducotr | |
| DS1248P | The function is 1024k NV SRAM with Phantom Clock. Dallas Semiconducotr | |
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