參數(shù)資料
型號(hào): ST16C654DIQ64
廠商: EXAR CORP
元件分類: 微控制器/微處理器
英文描述: 2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
中文描述: 4 CHANNEL(S), 1.5M bps, SERIAL COMM CONTROLLER, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, LQFP-64
文件頁(yè)數(shù): 9/51頁(yè)
文件大?。?/td> 968K
代理商: ST16C654DIQ64
ST16C654/654D
2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
REV. 5.0.0
9
2.0
FUNCTIONAL DESCRIPTIONS
2.1
The CPU interface is 8 data bits wide with 3 address lines and control signals to execute data bus read and
write transactions. The 654 data interface supports the Intel compatible types of CPUs and it is compatible to
the industry standard 16C550 UART. No clock (oscillator nor external clock) is required to operate a data bus
transaction. Each bus cycle is asynchronous using CS# A-D, IOR# and IOW# or CS#, R/W#, A4 and A3 inputs.
All four UART channels share the same data bus for host operations. A typical data bus interconnection for
Intel and Motorola mode is shown in
Figure 4
.
CPU Interface
F
IGURE
4. ST16C654/654D T
YPICAL
I
NTEL
/M
OTOROLA
D
ATA
B
US
I
NTERCONNECTIONS
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Intel DataBus(16Mode)Interconnections
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