參數(shù)資料
型號: μPD784044
廠商: NEC Corp.
英文描述: 16 Bit Single Chip Microcontrollers(16位單片微控制器)
中文描述: 16位單片機微控制器(16位單片微控制器)
文件頁數(shù): 37/62頁
文件大?。?/td> 366K
代理商: ΜPD784044
m
PD784044,
784046
37
(2) 3-wire serial I/O mode
This mode is to start transmission when the master device makes a serial clock active and to communicate
1-byte data in synchronization with this clock.
The interface in this mode communicates with devices that have conventional clocked serial interface.
Basically, communication is performed by using three lines: serial clock (SCK) and two serial data (SI and
SO) lines. To connect two or more devices, a handshake line is necessary.
Figure 7-9. Block Diagram in 3-Wire Serial I/O Mode
Remark
f
CLK
: internal system clock
n = 0 to 11
m = 1, 16 to 30
Internal bus
Direction control circuit
Shift register
SIO1, SIO2
Output latch
Serial clock counter
Interrupt
generation circuit
INTCSI1,
INTCSI2
Serial clock
control circuit
1/2m
1/2
n+1
f
CLK
SI1, SI2
SO1, SO2
SCK1, SCK2
S
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