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参数资料
| 型号： | MCM69F817 |
| 厂商： | Motorola, Inc. |
| 英文描述： | 256K x 18 Bit Flow-Through BurstRAM Synchronous Fast Static RAM |
| 中文描述： | 256 × 18位流通过BurstRAM同步快速静态存储器 |
| 文件页数： | 13/16页 |
| 文件大小： | 175K |
| 代理商： | MCM69F817 |
MCM69F817
6
MOTOROLA FAST SRAM
ABSOLUTE MAXIMUM RATINGS (See Note 1)
Rating
Symbol
Value
Unit
Power Supply Voltage
VDD
VSS – 0.5 to + 4.6
V
I/O Supply Voltage (See Note 2)
VDDQ
VSS – 0.5 to VDD
V
Input Voltage Relative to VSS for Any
Pin Except VDD (See Note 2)
Vin, Vout
VSS – 0.5 to
VDD + 0.5
V
Input Voltage (Three–State I/O)
(See Note 2)
VIT
VSS – 0.5 to
VDDQ + 0.5
V
Output Current (per I/O)
Iout
± 20
mA
Package Power Dissipation (See Note 3)
PD
1.6
W
Temperature Under Bias
Tbias
– 10 to 85
°C
Storage Temperature
Tstg
– 55 to 125
°C
NOTES:
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are
exceeded. Functional operation should be restricted to RECOMMENDED OPER-
ATING CONDITIONS. Exposure to higher than recommended voltages for extended
periods of time could affect device reliability.
2. This is a steady–state DC parameter that is in effect after the power supply has
achieved its nominal operating level. Power sequencing can not be controlled and
is not allowed.
3. Power dissipation capability is dependent upon package characteristics and use
environment. See Package Thermal Characteristics.
PACKAGE THERMAL CHARACTERISTICS — PBGA
Rating
Symbol
Max
Unit
Notes
Junction to Ambient (@ 200 lfm)
Single Layer Board
Four Layer Board
R
θJA
41
19
°C/W
1, 2
Junction to Board (Bottom)
R
θJB
11
°C/W
3
Junction to Case (Top)
R
θJC
19
°C/W
4
NOTES:
1. Junction temperature is a function of on–chip power dissipation, package thermal resistance, mounting site (board) temperature, ambient
temperature, air flow, board population, and board thermal resistance.
2. Per SEMI G38–87.
3. Indicates the average thermal resistance between the die and the printed circuit board.
4. Indicates the average thermal resistance between the die and the case top surface via the cold plate method (MIL SPEC–883 Method 1012.1).
This device contains circuitry to protect the
inputs against damage due to high static volt-
ages or electric fields; however, it is advised
that normal precautions be taken to avoid
application of any voltage higher than maxi-
mum rated voltages to this high–impedance
circuit.
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