參數(shù)資料
型號(hào): HD4048212R
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動(dòng)電路的微計(jì)算機(jī))
中文描述: 由于微機(jī)安裝有LCD控制器/驅(qū)動(dòng)電路(帶液晶控制/驅(qū)動(dòng)電路的微計(jì)算機(jī))
文件頁數(shù): 16/147頁
文件大?。?/td> 519K
代理商: HD4048212R
HD404829R Series
16
LCD Data Area ($050–$083):
Used for storing 52-digit LCD data which is automatically output to LCD
segments as display data. Data 1 lights the corresponding LCD segment; data 0 extinguishes it. Refer to
the LCD description for details.
Data Area ($090–$3BF):
464 digits from $090 to $25F have three banks, which can be selected by setting
the bank register (V: $03F). Before accessing this area, set the bank register to the required value (figure
7). The area from $260 to $3BF is accessed without setting the bank register.
Bit
Initial value
Read/Write
Bit name
3
Not used
2
Not used
0
0
R/W
V0
1
0
R/W
V1
V1
0
1
V0
0
1
0
1
Bank area selection
Bank 0 is selected
Bank 1 is selected
Bank 2 is selected
Not used
Note: After reset, the value in the bank register is 0, and therefore bank 0 is
selected. If V1 = 1 and V0 = 1, no bank is selected, and the operation is not
guaranteed.
Bank register (V: $03F)
Figure 7 Bank Register (V)
Stack Area ($3C0–$3FF):
Used for saving the contents of the program counter (PC), status flag (ST), and
carry flag (CA) at subroutine call (CAL or CALL instruction) and for interrupts. This area can be used as a
16-level nesting subroutine stack in which one level requires four digits. The data to be saved and the save
conditions are shown in figure 6.
The program counter is restored by either the RTN or RTNI instruction, but the status and carry flags can
only be restored by the RTNI instruction. Any unused space in this area is used for data storage.
相關(guān)PDF資料
PDF描述
HD4074829 AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動(dòng)電路的微計(jì)算機(jī))
HD404828R AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動(dòng)電路的微計(jì)算機(jī))
HD404829R AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動(dòng)電路的微計(jì)算機(jī))
HD4048412 4-Bit Single-Chip Microcomputer
HD4048412FS 4-Bit Single-Chip Microcomputer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4048212RFS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a LCD controller/Driver Circuit
HD4048212RH 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a LCD controller/Driver Circuit
HD4048212RTF 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a LCD controller/Driver Circuit
HD4048212TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404828FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller