參數(shù)資料
型號: HD404459
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計算機)
中文描述: 4位HMCS400系列微機(4位單片微計算機)
文件頁數(shù): 90/120頁
文件大?。?/td> 692K
代理商: HD404459
HD404459 Series
90
Bit
Initial value
Read/Write
Bit name
3
0
W
SMRA3
2
0
W
SMRA2
0
0
W
SMRA0
1
0
W
SMRA1
Serial mode register A (SMRA: $005)
0
1
0
1
0
1
0
1
0
1
0
1
0
1
SMRA2
SM
SMRA1
SMRA3
0
1
R4
1
/
SCK
mode selection
R4
1
SCK
SCK
Output
Output
Input
Clock source
Prescaler
System clock
External clock
division ratio
Figure 71 Serial Mode Register A (SMRA)
Serial Mode Register B (SMRB: $028):
This register has the following functions (figure 72).
Prescaler division ratio selection
Output level control in idle states
Serial mode register B (SMRB: $028) is a 2-bit write-only register. It cannot be written during data
transfer.
By setting bit 0 (SMRB0) of this register, the prescaler division ratio is selected. Only bit 0 (SMRB0) can
be reset to 0 by MCU reset. By setting bit 1 (SMRB1), the output level of the SO pin is controlled in idle
states of the serial interface. The output level changes at the same time that SMRB1 is written to.
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相關代理商/技術參數(shù)
參數(shù)描述
HD404459H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-bit HMCS400-series microcomputers
HD404459SERIES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
HD404508FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404608FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404608H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller