參數(shù)資料
型號: HD404849H
廠商: Hitachi,Ltd.
英文描述: SPLICE
中文描述: 4位單片機
文件頁數(shù): 88/125頁
文件大小: 471K
代理商: HD404849H
HD404849 Series
88
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
SMRA0
SMRA1
SMRA3
0
1
R2
1
/SCK
mode selection
R2
1
SCK
Output
Output
Input
Clock source
Prescaler
division ratio
Refer to
table 29
SCK
Prescaler
System clock
External clock
Figure 70 Serial Mode Register A (SMRA)
Serial Mode Register B (SMRB: $028):
This register has the following functions (figure 71).
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. Bit 1 (SMRB1) is used to control the output level of the SO pin in idle states.
The output level changes at the same time that SMRB1 is written to.
相關PDF資料
PDF描述
HD404849TF TERMINAL
HD4074849 TERMINAL
HD4074849FS CONTACT
HD4074849H CONTACT
HD4074849TF TERMINAL
相關代理商/技術參數(shù)
參數(shù)描述
HD404849SERIES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
HD404849TF 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
HD404868 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip LCD Circuit
HD404878 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip LCD Circuit
HD4048812 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip LCD Circuit