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參數(shù)資料
| 型號： | ST95022M3TR |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DRAM |
| 英文描述： | 2 Kbit Serial SPI EEPROM with High Speed Clock |
| 中文描述： | 2千位的SPI EEPROM，帶有高速時鐘 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 113K |
| 代理商： | ST95022M3TR |
Symbol
Parameter
Value
Unit
T
A
Ambient Operating Temperature
(2)
–40 to 125
°
C
T
STG
Storage Temperature
–65 to 150
°
C
T
LEAD
Lead Temperature, Soldering
(SO8 package)
40 sec
215
°
C
V
O
Output Voltage
–0.3 to V
CC
+0.6
V
V
I
Input Voltage with respect to Ground
–0.3 to 6.5
V
V
CC
Supply Voltage
–0.3 to 6.5
V
V
ESD
Electrostatic Discharge Voltage (Human Body model)
(3)
4000
V
Electrostatic Discharge Voltage (Machine model)
(4)
500
V
Notes:
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 STMicroelectronics SURE Program and
other relevant quality documents.
2. Depends on range.
3. MIL-STD-883C, 3015.7 (100pF, 1500
)
4. EIAJ IC-121 (Condition C) (200pF, 0
)
Table 2. Absolute Maximum Ratings
(1)
The device connected to the bus is selected when
the chip select input (S) goes low. Communications
with the chip can be interrupted with a hold input
(HOLD). The write operation is disabled by a write
protect input (W).
Data is clocked in during the low to high transition
of clock C, data is clocked out during the high to
low transition of clock C.
SIGNALS DESCRIPTION
Serial Output (Q).
The output pin is used to trans-
fer data serially out of the ST95022. 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. It receives instructions,
addresses, and the data to be written. Input is
latched on the rising edge of the serial clock.
Serial Clock (C).
The serial clock provides the
timing of the serial interface. Instructions, ad-
dresses, or data present at the input pin are latched
on the rising edge of the clock input, while data on
the Q pin changes after the falling edge of the clock
input.
Chip Select (S).
When S is high, the ST95022 is
deselected and the D output pin is at high imped-
ance and, unless an internal write operation is
underway the ST95022 will be in the standby power
mode. S low enables the ST95022, placing it in the
active power mode. It should be noted that after
power-on, a high to low transition on S is required
prior to the start of any operation.
Write Protect (W).
This pin is for hardware write
protection. When W is low, writes to the ST95022
memory are disabled but any other operations stay
enabled. When W is high, all writes operations are
available. W going low at any time before the last
bit D0 of the data stream will reset the write enable
latch and prevent programming. No action on W or
on the write enable latch can interrupt a write cycle
which has commenced.
1
2
3
4
AI01723
8
7
6
5
D
VSS
C
HOLD
Q
W
S
VCC
ST95022
Figure 2B. SO Pin Connections
DESCRIPTION
(cont’d)
2/16
ST95022
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