參數(shù)資料
型號(hào)： HD40C4342R
廠商： Hitachi,Ltd.
英文描述： 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
中文描述： 4位HMCS400系列微電腦（4位單片微計(jì)算機(jī)）
文件頁數(shù)： 70/100頁
文件大?。?/td> 610K
代理商： HD40C4342R
HD404344R Series/HD404394 Series
70
Serial Data Register (SRL: $006, and SRU: $007):
This register has the following functions (figures 47
and 48):
Transmission data write and shift
Receive data shift and read
Data written to the serial data registers is output from the SO pin, LSB first, synchronously with the falling
edge of the transmit clock.
Also, data from the SI pin (from the LSB) is input synchronously with the rising edge of the transmit clock.
Reading or writing to the serial data register should be performed after data transfer. Read/write operation
to this register during data transfer does not guarantee valid data. The input/output timing chart for the
transmit clock and the data are shown in figure 49.
Bit
Initial value
Read/Write
Bit name
3
Undefined
R/W
SR3
2
Undefined
R/W
SR2
0
Undefined
R/W
SR0
1
Undefined
R/W
SR1
Serial data register (lower) (SRL: $006)
Figure 47 Serial Data Register (SRL)
Bit
Initial value
Read/Write
Bit name
3
Undefined
R/W
SR7
2
Undefined
R/W
SR6
0
Undefined
R/W
SR4
1
Undefined
R/W
SR5
Serial data register (upper) (SRU: $007)
Figure 48 Serial Data Register (SRU)
LSB
MSB
1
2
3
4
5
6
7
8
Ttransmit clock
Serial output
data
Serial input
data latch
timing
Figure 49 Serial Interface Timing
相關(guān)PDF資料
PDF描述
HD40C4344R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404342R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404344R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404391S 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404392S 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
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