參數(shù)資料
型號: M38067MCDXXXFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP80
封裝: 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù): 19/60頁
文件大?。?/td> 712K
代理商: M38067MCDXXXFP
23
MITSUBISHI MICROCOMPUTERS
3806 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Serial I/O2
The serial I/O2 function can be used only for clock synchronous
serial I/O.
For clock synchronous serial I/O the transmitter and the receiver
must use the same clock. If the internal clock is used, transfer is
started by a write signal to the serial I/O2 register.
Serial I/O2 control register (SIO2CON) 001D16
The serial I/O2 control register contains seven bits which control
various serial I/O functions.
Fig. 15 Structure of serial I/O2 control register
Fig. 16 Block diagram of serial I/O2 function
Serial I/O2 control register
(SIO2CON : address 001D16)
b7
Internal synchronous clock selection bits
0 0 0: f(XIN)/8
0 0 1: f(XIN)/16
0 1 0: f(XIN)/32
0 1 1: f(XIN)/64
1 1 0: f(XIN)/128
1 1 1: f(XIN)/256
Serial I/O2 port selection bit
0: I/O port
1: SOUT2,SCLK2 signal output
SRDY2 output enable bit
0: I/O port
1: SRDY2 signal output
Transfer direction selection bit
0: LSB first
1: MSB first
Serial I/O2 synchronous clock selection bit
0: External clock
1: Internal clock
Not used (returns “0” when read)
b0
b2 b1 b0
XIN
"1"
"0"
"1"
"0"
"1"
SRDY2
S
CLK2
"0"
"1"
1/8
1/16
1/32
1/64
1/128
1/256
Data bus
Serial I/O2
interrupt request
Serial I/O2 port selection bit
Serial I/O counter 2 (3)
Serial I/O shift register 2 (8)
Synchronization circuit
Serial I/O2 port selection bit
Serial I/O2 synchronous
clock selection bit
SRDY2 output enable bit
External clock
Internal synchronous
clock selection bits
Divider
P73 latch
P73/SRDY2
P72/SCLK2
P71/SOUT2
P70/SIN2
P72 latch
P71 latch
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