- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370460 > HD407A4669 (Hitachi,Ltd.) Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計算機) PDF資料下載
參數(shù)資料
| 型號： | HD407A4669 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計算機) |
| 中文描述： | 低電壓如同在微機芯片的DTMF產(chǎn)生電路（帶雙音多頻電路的低電壓微計算機） |
| 文件頁數(shù)： | 79/142頁 |
| 文件大?。?/td> | 894K |
| 代理商： | HD407A4669 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁當前第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁
HD404669 Series
79
Serial Interface Operation
Selecting and Changing the Operating Mode:
Table 19 lists the serial interface’s operating modes. To
select an operating mode, use one of these combinations of port mode register A (PMRA: $004) and serial
mode register 1A (SM1A: $005) settings; to change the operating mode, always initialize the serial
interface internally by writing data to serial mode register 1A (SM1A: $005). Note that the serial interface
is initialized by writing data to serial mode register 1A(SM1A: $005). Refer to the following Serial Mode
Register 1A section for details.
Pin Setting:
The R4
1
/
SCK
1
pin is controlled by writing data to serial mode register 1A (SM1A: $005).
The R4
2
/SI
1
and R4
3
/SO
1
pins are controlled by writing data to port mode register A (PMRA: $004). Refer
to the following Registers for Serial Interface section for details.
Transmit Clock Source Setting:
The transmit clock source is set by writing data to serial mode register
1A (SM1A: $005) and serial mode register 1B (SM1B: $028). Refer to the following Registers for Serial
Interface section for details.
Data Setting:
Transmit data is set by writing data to the serial data register 1 (SR1L: $006, SR1U: $007).
Receive data is obtained by reading the contents of the serial data register 1 (SR1L: $006, SR1U: $007).
The serial data is shifted by the transmit clock and is input from or output to an external system.
The output level of the SO
1
pin is invalid until the first data is output after MCU reset, or until the
High/Low level control in idle states is performed.
Table 19 Serial Interface Operating Modes
SM1A
PMRA
Bit 3
Bit 1
Bit 0
Operating Mode
1
0
0
Serial clock continuous output mode
1
Transmit mode
1
0
Receive mode
1
Transmit/receive mode
Transfer Control:
The serial interface is activated by the STS instruction. The octal counter is reset to
000 by this instruction, and it increments at the rising edge of the transmit clock. When the eighth transmit
clock signal is input or when serial transmission/receive is discontinued, the octal counter is reset to 000,
the serial 1 interrupt request flag (IFS1: $003, bit 2) is set, and the transfer stops.
When the prescaler output is selected as the transmit clock, the transmit clock frequency is selected as 4t
cyc
to 8192t
cyc
by setting bits 2 to 0 (SM1A2– SM1A0) of serial mode register 1A (SM1A: $005) and bit 0
(SM1B0) of serial mode register 1B (SM1B: $028) as listed in table 20.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD404719FS | Five timer/counters |
| HD404439FS | Five timer/counters |
| HD4074719FS | Five timer/counters |
| HD404439H | Five timer/counters |
| HD404719 | Five timer/counters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD407A4669H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit |
| HD407C4374 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HMCS43XXFamily User＇s Manual/Device |
| HD407C4374FT | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip A/D Converter |
| HD407C4384FT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD407C4384S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。