參數資料
型號: 101-1262
廠商: Rabbit Semiconductor
文件頁數: 112/120頁
文件大小: 0K
描述: KIT DEV RCM5400W US/INTERNATIONL
標準包裝: 1
系列: RabbitCore 5000
類型: Wi-Fi / 802.11.b
頻率: 2.4GHz
適用于相關產品: RCM5400W
已供物品: 板,模塊,線纜,CD,電源
其它名稱: 316-1138
OEM User’s Manual
85
A.3 I/O Buffer Sourcing and Sinking Limit
Unless otherwise specified, the Rabbit I/O buffers are capable of sourcing and sinking
8 mA of current per pin at full AC switching speed. Full AC switching assumes a
100 MHz CPU clock with the clock doubler enabled and capacitive loading on address
and data lines of less than 70 pF per pin. The absolute maximum operating voltage on all
I/O is 3.3 V ±10%.
A.4 Bus Loading
You must pay careful attention to bus loading when designing an interface to the
RCM5400W. This section provides bus loading information for external devices.
Table A-4 lists the capacitance for the various RCM5400W I/O ports.
Table A-5 lists the external capacitive bus loading for the various RCM5400W output
ports. Be sure to add the loads for the devices you are using in your custom system and
verify that they do not exceed the values in Table A-5.
Table A-4. Capacitance of Rabbit 5000 I/O Ports
I/O Ports
Input
Capacitance
(pF)
Output
Capacitance
(pF)
Parallel Ports A to E
12
14
Table A-5. External Capacitive Bus Loading -20°C to +85°C
Output Port
Clock Speed
(MHz)
Maximum External
Capacitive Loading (pF)
All I/O lines with clock
doubler enabled
73.73
100
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