參數(shù)資料
型號(hào): UPD780032AYGK
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位單晶片微控制器
文件頁數(shù): 26/70頁
文件大?。?/td> 527K
代理商: UPD780032AYGK
26
μ
PD780031AY, 780032AY, 780033AY, 780034AY
Data Sheet U14045EJ1V0DS00
(2) Serial interface SIO30
The serial interface SIO30 has one mode: 3-wire serial I/O mode.
3-wire serial I/O mode (fixed as MSB first)
This is an 8-bit data transfer mode using three lines: a serial clock line (SCK30), serial output line (SO30),
and serial input line (SI30).
Since simultaneous transmit and receive operations are enabled in the 3-wire serial I/O mode, the
processing time for data transfer is reduced.
The first bit in 8-bit data in the serial transfer is fixed as MSB.
The 3-wire serial I/O mode is useful for connection to peripheral I/O devices, display controllers, etc. that
include a clocked serial interface.
Figure 5-10. Block Diagram of Serial Interface SIO30
Internal bus
8
Serial clock
control circuit
Serial clock
counter
Interrupt request
signal generator
Selector
Serial I/O shift register
30 (SIO30)
SI30/P20
SO30/P21
SCK30/P22
INTCSI30
f
X
/2
3
f
X
/2
4
f
X
/2
5
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