參數(shù)資料
型號(hào)： HD404816FS
廠商： Renesas Technology Corp.
英文描述： 4-Bit Single-Chip Microcomputer
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 58/100頁(yè)
文件大?。?/td> 384K
代理商： HD404816FS
HD404818 Series
56
Serial Interface
The serial interface transmits/receives 8-bit data serially. It consists of the serial data register, the serial
mode register, port mode register A, the octal counter, and the selector (figure 29). Pin R0
0
/
SCK
and the
transmit clock signal are controlled by the serial mode register. The data of the serial data register can be
written and read by software. The data in the serial data register can be shifted synchronously with the
transmit clock signal.
The STS instruction starts serial interface operations and resets the octal counter to $0. The octal counter
starts to count at the falling edge of the transmit clock signal (
SCK
) and increments by one at the rising
edge of the
S C K
. When the octal counter is reset to $0 after eight transmit clock signals, or when a
transmit/receive operation is discontinued by resetting the octal counter, the serial interrupt request flag will
be set.
I
÷
2
÷
8
÷
3
÷
1
÷
5
÷
2
Port mode
register
(PMRA)
SCK
Selector
System
clock
Prescaler S (PSS)
I/O
control
logic
3
Serial mode
register
(SMR)
Clock
Serial data
register (SR)
Serial interrupt
request flag
(IFS)
S
1/2
SI
SO
Octal
counter (OC)
I/O
control
logic
Transfer
control
signal
f
cyc
/f
sub
(t
cyc
/t
subcyc
)
Figure 29 Serial Interface Block Diagram
相關(guān)PDF資料
PDF描述
HD404816H 4-Bit Single-Chip Microcomputer
HD404816TF 4-Bit Single-Chip Microcomputer
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404816H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
HD404816TF 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
HD404818 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
HD404818FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:16-digit LCD driver
HD404818H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
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