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HD6417750SBP200 参数 Datasheet PDF下载

HD6417750SBP200图片预览
型号: HD6417750SBP200
PDF下载: 下载PDF文件 查看货源
内容描述: 的SuperH RISC引擎 [SuperH RISC engine]
分类和应用: 外围集成电路时钟
文件页数/大小: 1039 页 / 6201 K
品牌: RENESAS [ RENESAS TECHNOLOGY CORP ]
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11.2.3  
Minute Counter (RMINCNT)  
RMINCNT is an 8-bit readable/writable register used as a counter for setting and counting the  
BCD-coded minute value in the RTC. It counts on the carry generated once per minute by the  
second counter.  
The setting range is decimal 00 to 59. The RTC will not operate normally if any other value is set.  
Write processing should be performed after stopping the count with the START bit in RCR2, or  
by using the carry flag.  
RMINCNT is not initialized by a power-on or manual reset, or in standby mode.  
Bit 7 is always read as 0. A write to this bit is invalid, but the write value should always be 0.  
Bit:  
7
0
6
5
4
3
2
1
0
10-minute units  
1-minute units  
Initial value:  
R/W:  
Undefined Undefined Undefined Undefined Undefined Undefined Undefined  
R/W R/W R/W R/W R/W R/W R/W  
R
11.2.4  
Hour Counter (RHRCNT)  
RHRCNT is an 8-bit readable/writable register used as a counter for setting and counting the  
BCD-coded hour value in the RTC. It counts on the carry generated once per hour by the minute  
counter.  
The setting range is decimal 00 to 23. The RTC will not operate normally if any other value is set.  
Write processing should be performed after stopping the count with the START bit in RCR2, or  
by using the carry flag.  
RHRCNT is not initialized by a power-on or manual reset, or in standby mode.  
Bits 7 and 6 are always read as 0. A write to these bits is invalid, but the write value should always  
be 0.  
Bit:  
7
0
6
0
5
4
3
2
1
0
10-hour units  
Undefined Undefined Undefined Undefined Undefined Undefined  
R/W R/W R/W R/W R/W R/W  
1-hour units  
Initial value:  
R/W:  
R
R
Rev. 6.0, 07/02, page 272 of 986  
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