- 您現在的位置：買賣IC網 > PDF目錄370461 > HD404864 (Hitachi,Ltd.) Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計算機) PDF資料下載
參數資料
| 型號： | HD404864 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計算機) |
| 中文描述： | 低電壓如同在微機芯片LCD電路（片上液晶顯示器電路的低壓微計算機） |
| 文件頁數： | 37/200頁 |
| 文件大?。?/td> | 633K |
| 代理商： | HD404864 |
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頁當前第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頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁
HD404889/HD404899/HD404878/HD404868 Series
37
W register (W), X register (X) and Y register (Y):
The W register is a 2-bit register, and the X and Y registers are 4-bit registers, used for RAM register
indirect addressing. The Y register is also used for D port addressing.
SPX register (SPX) and SPY register (SPY):
The SPX and SPY registers are 4-bit registers used as X register and Y register auxiliary registers,
respectively.
Carry flag (CA):
This flag holds ALU overflow when an arithmetic/logic instruction is executed. It is also affected by the
SEC, REC, ROTL, and ROTR instructions. The contents of the carry flag are saved to the stack when
interrupt handling is performed, and are restored from the stack by the RTNI instruction (but are not
affected by the RTN instruction).
Status flag (ST):
This flag holds ALU overflow when an arithmetic/logic or compare instruction is executed, and the result
of an ALU non-zero or bit test instruction. It is used as the branch condition for the BR, BRL, CAL, and
CALL instructions. The status flag is a latch-type flag, and does not change until the next arithmetic/logic,
compare, or bit test instruction is executed. After a BR, BRL, CAL, or CALL instruction, the status flag is
set to 1 regardless of whether the instruction is executed or skipped. The contents of the status flag are
saved to the stack when interrupt handling is performed, and are restored from the stack by the RTNI
instruction (but are not affected by the RTN instruction).
Program counter (PC):
This is a 14-bit binary counter that holds ROM address information.
Stack pointer (SP):
The stack pointer is a 10-bit register that holds the address of the next save space in the stack area. The
stack pointer is initialized to $3FF by an MCU reset. The stack pointer is decremented by 4 each time data
is saved, and incremented by 4 each time data is restored. The upper 4 bits of the stack pointer are fixed at
1111, so that a maximum of 16 stack levels can be used.
There are two ways in which the stack pointer is initialized to $3FF: by an MCU reset as mentioned above,
or by resetting the RSP bit with the REM or REMD instruction.
Reset
An MCU reset is performed by driving the
RESET
pin low. At power-on, and when subactive mode,
watch mode, or stop mode is cleared,
RESET
should be input for at least tRC to provide the oscillation
settling time for the oscillator.In other cases, the MCU is reset by inputting
RESET
for at least two
instruction cycles.
Table 1 shows the areas initialized by an MCU reset, and their initial values.
相關PDF資料 |
PDF描述 |
|---|---|
| HD4074869 | Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計算機) |
| HD4074889 | Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計算機) |
| HD404868 | Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計算機) |
| HD404874 | Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計算機) |
| HD404878 | Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計算機) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| HD4048812H | 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 |
| HD4048812TE | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。