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參數資料
| 型號： | M35080BN |
| 廠商： | 意法半導體 |
| 元件分類： | EEPROM |
| 英文描述： | 8 Kbit Serial SPI Bus EEPROM With Incremental Registers |
| 中文描述： | 8千位串行SPI總線的EEPROM與增量寄存器 |
| 文件頁數： | 2/18頁 |
| 文件大小： | 139K |
| 代理商： | M35080BN |
M35080
2/18
Figure 2. DIP and SO Connections
Note: 1. NC = Not Connected.
1
2
3
4
AI02144B
8
7
6
5
NC
VSS
C
D
Q
S
W
VCC
M35080
Table 2. Absolute Maximum Ratings
1
Note: 1.
Except for the rating “Operating Temperature Range”, stresses above those listed in the Table “Absolute Maximum Ratings” may
cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other
conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum
Rating conditions for extended periods may affect device reliability. Refer also to the ST SURE Program and
other relevant quality documents.
2. MIL-STD-883C, 3015.7 (100pF, 1500W).
3. EIAJ IC-121 (Condition C) (200pF, 0W).
Symbol
Parameter
Value
Unit
T
A
Ambient Operating Temperature
-40 to 125
°C
T
STG
Storage Temperature
-65 to 150
°C
T
LEAD
Lead Temperature during Soldering
PSDIP8: 10 sec
SO8: 40 sec
260
215
°C
V
O
Output Voltage Range
-0.3 to V
CC
+0.6
V
V
I
Input Voltage Range
-0.3 to 6.5
V
V
CC
Supply Voltage Range
-0.3 to 6.5
V
V
ESD
Electrostatic Discharge Voltage (Human Body model)
2
4000
V
Electrostatic Discharge Voltage (Machine model)
3
400
V
The memory is organized in pages of 32 bytes.
However, the first page is not treated in the same
way as the others. Instead, it is considered to con-
sist of sixteen 16-bit incremental registers. Each
register can be modified using the conventional
write instructions, but the new value will only be
accepted if it is greater than the current value.
Thus, each register is restricted to being modified
monotonically upwards.
This is useful in applications where it is necessary
to implement a counter that is protected from
fraudulent tampering (such as in a car odometer,
an electricity meter, or a tally for remaining credit).
SIGNAL DESCRIPTION
Serial Output (Q)
The output pin is used to transfer data serially out
of the Memory. Data is shifted out on the falling
edge of the serial clock.
Serial Input (D)
The input pin is used to transfer data serially into
the device. Instructions, addresses, and the data
to be written, are each received this way. Input is
latched on the rising edge of the serial clock.
Serial Clock (C)
The serial clock provides the timing for the serial
interface (as shown in Figure 3). Instructions, ad-
dresses, or data are latched, from the input pin, on
the rising edge of the clock input. The output data
on the Q pin changes state after the falling edge of
the clock input.
Chip Select (S)
When S is high, the memory device is deselected,
and the Q output pin is held in its high impedance
state. Unless an internal write operation is under-
way, the memory device is placed in its stand-by
power mode.
After power-on, a high-to-low transition on S is re-
quired prior to the start of any operation.
Write Protect (W)
The protection features of the memory device are
summarized in Table 3.
The hardware write protection, controlled by the W
pin, restricts write access to the Status Register
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