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| 型号： | IDT79R3081-40DL8 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 40 MHz, RISC PROCESSOR, PQCC84 |
| 封装： | 0.050 INCH PITCH, HEAT SINK, PLASTIC, LCC-84 |
| 文件页数： | 40/41页 |
| 文件大小： | 893K |
| 代理商： | IDT79R3081-40DL8 |
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IDT79R3081 RISController
MILITARY AND COMMERICAL TEMPERATURE RANGES
5.5
8
NOTES ON SYSTEM DESIGN
The R3081 has been designed to simplify the task of high-
speed system design. Thus, set-up and hold-time require-
ments have been kept to a minimum, allowing a wide variety of
system interface strategies.
To minimize these AC parameters, the R3081 employs
feedback from its SysClk output to the internal bus interface
unit. This allows the R3081 to reference input signals to the
reference clock seen by the external system. The SysClk out-
put is designed to provide relatively large AC drive to
minimize skew due to slow rise or fall times. A typical part will
have less than 2ns rise or fall (10% to 90% signal times) when
driving the test load.
Therefore, the system designer should use care when
designing for direct SysClk use. Total loading (due to devices
connected on the signal net and the routing of the net itself)
should be minimized to ensure the SysClk output has a
smooth and rapid transition. Long rise and/or fall times may
cause a degradation in the speed capability of an individual
device.
Similarly, the R3081 employs feedback on its ALE output to
ensure adequate address hold time to ALE. The system
designer should be careful when designing the ALE net to
minimize total loading and to minimize skew between ALE and
the A/D bus, which will ensure adequate address access latch
time.
IDT's field and factory applications groups can provide the
system designer with assistance for these and other design
issues.
Airflow (m/s)
01234
5
DL84 JA
21.0
12.8
12.0
9.9
9.2
8.5
DL84 CA
18.3
10.1
9.3
7.2
6.6
5.8
PL84 JA
36.6
29.6
27.0
26.2
25.4
24.8
PL84 CA
18.3
10.1
9.3
7.2
6.6
5.8
Table 1 Thermal Resistance at Various Airflows
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IDT79R3081-40DLG | 制造商:Integrated Device Technology Inc 功能描述:MPU R3081 RISC 32-Bit 40MHz 84-Pin PLCC |
| IDT79R3081E25DL | 制造商:Integrated Device Technology Inc 功能描述: |
| IDT79R4650-100DP | 功能描述:IC MPU 64BIT W/DSP 100MHZ 208QFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:- 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA（25x25） 包装:托盘 |
| IDT79R4650-133DP | 功能描述:IC MPU 64BIT W/DSP 133MHZ 208QFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:- 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA（25x25） 包装:托盘 |
| IDT79R4700-100DP | 功能描述:IC MPU 64BIT 5V 100MHZ 208-QFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:- 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA（25x25） 包装:托盘 |
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