參數(shù)資料
型號: HD4048212R
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動電路的微計算機)
中文描述: 由于微機安裝有LCD控制器/驅(qū)動電路(帶液晶控制/驅(qū)動電路的微計算機)
文件頁數(shù): 33/147頁
文件大?。?/td> 519K
代理商: HD4048212R
HD404829R Series
33
Standby Mode:
In standby mode, the oscillators continue to operate, but the clocks related to instruction
execution stop. Therefore, the CPU operation stops, but all RAM and register contents are retained, and the
D or R port status, when set to output, is maintained. Peripheral functions such as interrupts, timers, and
serial interface continue to operate. The power dissipation in this mode is lower than in active mode
because the CPU stops.
The MCU enters standby mode when the SBY instruction is executed in active mode.
Standby mode is terminated by a RESET input or an interrupt request. If it is terminated by RESET input,
the MCU is reset as well. After an interrupt request, the MCU enters active mode and executes the next
instruction after the SBY instruction. If the interrupt enable flag is 1, the interrupt is then processed; if it is
0, the interrupt request is left pending and normal instruction execution continues. A flowchart of
operation in standby mode is shown in figure 15.
Standby mode
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Yes
Watch mode
System clock
oscillator started
System reset
System clock
oscillator started
Next instruction
execution
Interrupts
enabled
Next instruction
execution
Yes
No
IF = 1,
IM = 0,
IE = 1
RESET = 1
IF0 IM0 = 1
IF1 IM1 = 1
IFTA IMTA
= 1
IFTB
IIM2 = 1
IIM3 = 1
IFTD
IIM4 = 1
No
Yes
*2
*1
*1
*1
*1
*1
No
Stop mode
RESET = 1
STOPC = 0
RAME = 1
RAME = 0
Yes
Yes
No
No
Notes: 1. Only when clearing from standby mode
2. IFAD
IMAD
+ IFS
IMS
= 1
Figure 15 MCU Operation Flowchart
相關(guān)PDF資料
PDF描述
HD4074829 AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動電路的微計算機)
HD404828R AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動電路的微計算機)
HD404829R AS Microcomputer Incorporating a LCD controller/Driver Circuit(帶LCD控制/驅(qū)動電路的微計算機)
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