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参数资料
| 型号： | M48T35Y-70PC1 |
| 厂商： | 意法半导体 |
| 英文描述： | 256 Kbit 32Kb x8 TIMEKEEPER SRAM |
| 中文描述： | 256千位的32KB的SRAM x8计时器 |
| 文件页数： | 2/19页 |
| 文件大小： | 148K |
| 代理商： | M48T35Y-70PC1 |
M48T35AY, M48T35AV
2/19
Figure 2A. DIP Connections
A1
A0
DQ0
DQ1
DQ2
VSS
A7
A6
A5
A4
A3
A2
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
W
DQ5
DQ4
DQ3
A12
A14
VCC
AI02798B
8
9
10
11
12
13
14
1
2
3
4
5
6
7
16
15
28
27
26
25
24
23
22
21
20
19
18
17
M48T35AY
M48T35AV
Figure 2B. SOIC Connections
AI02799
8
9
10
11
12
13
14
2
3
4
5
6
7
22
21
20
19
18
17
16
15
28
27
26
25
24
23
1
A1
A0
DQ0
DQ1
DQ2
VSS
A7
A6
A5
A4
A3
A2
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
W
DQ5
DQ4
DQ3
A12
A14
VCC
M48T35AY
M48T35AV
completion of the surface mount process. Inser-
tion of the SNAPHAT housing after reflow pre-
vents potential battery and crystal damage due to
the high temperatures required for device surface-
mounting. The SNAPHAT housing is keyed to pre-
vent reverse insertion.
The SOIC and battery/crystal packages are
shipped separately in plastic anti-static tubes or in
Tape & Reel form.
For the 28 lead SOIC, the battery/crystal package
(i.e. SNAPHAT) part number is "M4T28-
BR12SH1".
As Figure 3 shows, the static memory array and
the quartz controlled clock oscillator of the
M48T35AY/35AV are integrated on one silicon
chip. The two circuits are interconnected at the up-
per eight memory locations to provide user acces-
sible BYTEWIDE clock information in the bytes
with addresses 7FF8h-7FFFh.
The clock locations contain the year, month, date,
day, hour, minute, and second in 24 hour BCD for-
mat. Corrections for 28, 29 (leap year), 30, and 31
day months are made automatically. Byte 7FF8h
is the clock control register. This byte controls user
access to the clock information and also stores the
clock calibration setting.
Table 1. Signal Names
A0-A14
Address Inputs
DQ0-DQ7
Data Inputs / Outputs
E
Chip Enable
G
Output Enable
W
Write Enable
V
CC
Supply Voltage
V
SS
Ground
The 28 pin 600mil DIP CAPHAT houses the
M48T35AY/35AV silicon with a quartz crystal and
a long life lithium button cell in a single package.
The 28 pin 330mil SOIC provides sockets with
gold plated contacts at both ends for direct con-
nection to a separate SNAPHAT housing contain-
ing the battery and crystal. The unique design
allows the SNAPHAT battery package to be
mounted on top of the SOIC package after the
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M48T35Y-70PC1 | 制造商:STMicroelectronics 功能描述:SRAM TIMEKEEPER 256K 48T35 DIP28 |
| M48T35Y-70PC1E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM |
| M48T35Y-70PC1F | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM |
| M48T35Y-70PC1TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM |
| M48T35Y-70PC6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM |
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