参数资料
型号: M34518E8SP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDIP32
封装: 8.90 X 28 MM, 1.78 MM PITCH, PLASTIC, SDIP-32
文件页数: 116/162页
文件大小: 1149K
代理商: M34518E8SP
Rev.3.01
2005.06.15
page 55 of 157
REJ03B0008-0301
4518 Group
(5) How to use serial I/O
Figure 44 shows the serial I/O connection example. Serial I/O inter-
rupt is not used in this example. In the actual wiring, pull up the
wiring between each pin with a resistor. Figure 44 shows the data
transfer timing and Table 16 shows the data transfer sequence.
Fig. 44 Serial I/O connection example
SOUT
SRDY signal
SCK
SIN
D3
SCK
SOUT
SIN
D3
Master (clock control)
Serial I/O interrupt
enable bit
(SNZSI instruction valid)
Interrupt control
register V2
Serial I/O control
register J1
Serial I/O port
SCK,SOUT,SIN
Instruction clock/8 selected
as synchronous clock
Slave (external clock)
Serial I/O interrupt
enable bit
(SNZSI instruction valid)
0
1
(Bit 3)
(Bit 0)
1
0
0
1
11
: Set an arbitrary value.
Serial I/O control
register J1
Serial I/O port
SCK,SOUT,SIN
(Bit 3)
(Bit 0)
(Bit 3)
(Bit 0)
Interrupt control
register V2
(Bit 3)
(Bit 0)
External clock selected
as synchronous clock
Fig. 45 Timing of serial I/O data transfer
M0–M7: Contents of master serial I/O register
S0–S7: Contents of slave serial I/O register
Rising of SCK: Serial input
Falling of SCK: Serial output
SIN
SOUT
Master
Slave
SCK
SST instruction
SOUT
SIN
S0
S7
S1
S2
S3
S4
S5
S6
S7
SST instruction
SRDY signal
S0
S7
S1
S3
S4
S5
S6
S7
M0
M7
M1
M2
M3
M4
M5
M6
M7
M0
M7
M1
M2
M3
M4
M5
M6
M7
S2
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