參數(shù)資料
型號(hào): μPD780986
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8 Bit Single Chip Microcontrollers
中文描述: 8位單片機(jī)微控制器
文件頁(yè)數(shù): 28/48頁(yè)
文件大?。?/td> 256K
代理商: ΜPD780986
28
μ
PD780984, 780986, 780988
(2) Serial Interface (SIO3)
SIO3 provides the 3-wire serial I/O mode.
3-wire serial I/O mode (fixed MS first)
This mode performs the 8-bit data transfer using three lines: Serial Clock (SCK), Serial Output (SO), and
Serial Input (SI).
The 3-wire serial I/O mode enables simultaneous transmission and reception, thereby speeding up data
transfer processing.
The first bit of 8-bit data for the serial transfer is fixed as MSB.
The 3-wire serial I/O mode is valid when connecting a peripheral I/O or display controller in which the clock
synchronous serial interface is included.
Figure 5-9. Serial Interface (SIO3) Block Diagram
SI
f
X
/2
6
-f
X
/2
8
INTCSI3
SO
SCK
S
Internal Bus
Serial I/O Shift
Register 3 (SIO3)
Serial Clock
Counter
Interrupt
Request Signal
Generation Circuit
Serial Clock
Control Circuit
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