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7906 参数 Datasheet PDF下载

7906图片预览
型号: 7906
PDF下载: 下载PDF文件 查看货源
内容描述: 16位单片机 [16-BIT SINGLE-CHIP MICROCOMPUTER]
分类和应用: 计算机
文件页数/大小: 531 页 / 3056 K
品牌: RENESAS [ RENESAS TECHNOLOGY CORP ]
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APPENDIX  
Appendix 2. Control registers  
b7 b6 b5 b4 b3 b2 b1 b0  
UART0 transmit/receive mode register (Address 3016  
UART1 transmit/receive mode register (Address 3816  
)
)
Function  
Reference  
Bit  
0
Bit name  
At reset R/W  
b2 b1b0  
0
0
0
RW  
RW  
RW  
Serial I/O mode select bits  
11-5  
0 0 0 : Serial I/O is invalid.  
(P1 functions as a programmable I/O port.)  
0 0 1 : Clock synchronous serial I/O mode  
0 1 0 :  
1
2
Do not select.  
0 1 1 :  
1 0 0 : UART mode (Transfer data length = 7 bits)  
1 0 1 : UART mode (Transfer data length = 8 bits)  
1 1 0 : UART mode (Transfer data length = 9 bits)  
1 1 1 : Do not select.  
Internal/External clock select bit  
Stop bit length select bit  
0 : Internal clock  
1 : External clock  
3
4
5
0
0
0
RW  
RW  
RW  
0 : One stop bit  
1 : Two stop bits  
(Valid in UART mode)  
(Note)  
Odd/Even parity select bit  
(Valid in UART mode when parity  
0 : Odd parity  
1 : Even parity  
enable bit = 1.)  
(Note)  
Parity enable bit  
(Valid in UART mode)  
0 : Parity disabled  
1 : Parity enabled  
6
7
0
0
RW  
RW  
(Note)  
Sleep select bit  
(Valid in UART mode)  
0 : Sleep mode terminated (Invalid)  
1 : Sleep mode selected  
(Note)  
Note: Bits 4 to 6 are invalid in the clock synchronous serial I/O mode. (Each may be either 0or 1.) Additionally, fix bit 7 to 0.”  
b7  
b0  
UART0 baud rate register (BRG0) (Address 3116  
UART1 baud rate register (BRG1) (Address 3916  
)
)
Reference  
Function  
Bit  
At reset R/W  
Undefined WO  
Any value in the range from 0016to FF16can be set.  
Assuming that the set value = n, BRGi divides the count source frequency by (n + 1).  
11-14  
7 to 0  
Note: Writing to this register must be performed while the transmission/reception halts.  
Use the MOVM (MOVMB) or STA (STAB, STAD) instruction for writing to this register.  
(b15)  
b7  
(b8)  
b0 b7  
b0  
UART0 transmit buffer register (Addresses 3316, 3216  
)
UART1 transmit buffer register (Addresses 3B16, 3A16  
)
Bit  
Function  
At reset R/W  
Undefined WO  
Reference  
8 to 0 Transmit data is set.  
15 to 9 Nothing is assigned.  
11-11  
Undefined  
Note: Use the MOVM (MOVMB) or STA (STAB, STAD) instruction for writing to this register.  
7906 Group Users Manual Rev.2.0  
20-15  
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