參數(shù)資料
型號(hào)： HD40A4082
廠商： Hitachi,Ltd.
英文描述： Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計(jì)算機(jī))
中文描述： 低電壓如同在微機(jī)芯片的A / D轉(zhuǎn)換器（帶片上的A / D轉(zhuǎn)換器的低壓微計(jì)算機(jī)）
文件頁數(shù)： 52/162頁
文件大小： 482K
代理商： HD40A4082
HD404374/HD404384/HD404389/HD404082/HD404084 Series
52
Direct transition from subactive to active mode (Applies to HD404374 Series):
A direct transition can be made from subactive mode to active mode by controlling the direct transfer on
flag (DTON: $020,3) and low speed on flag (LSON: $020,0). The procedure is shown below.
(a) Set LSON = 0 and DTON = 1 in subactive mode.
(b) Execute a STOP or SBY instruction.
(c) After the lapse of the MCU internal processing time and the oscillation settling time, the MCU
automatically switches from subactive mode to active mode (figure 16).
Notes: 1. The DTON flag ($020,3) can be set in only subactive mode. It is always in the reset state in
active mode.
2. The condition for transition time T
D
from the subactive mode to active mode is as follows:
t
RC
< T
D
< T + t
RC
.
Subactive mode
STOP/SBY
instruction execution
MCU internal
processing time
Oscillation
stabilization time
Active mode
(Set LSON =0, DTON =1)
Interrupt strobe
Direct transition
completion timing
T
T
D
t
RC
T: Interrupt frame period
t
RC
: Oscillation settling time
T
D
: Direct transition time
Figure 16 Direct Transition Timing
MCU operation sequence:
The MCU operates in accordance with the flowchart shown in figure 17.
RESET
input is asynchronous
input, and the MCU immediately enters the reset state upon
RESET
input, regardless of its current state.
In the low-power mode operation sequence, if a STOP/SBY instruction is executed while the IE flag is
cleared and the interrupt flag is set, releasing the relevant interrupt mask, the STOP/SBY instruction is
canceled (regarded as NOP) and the next instruction is executed. Therefore, when executing a STOP/SBY
instruction, all interrupt flags must be cleared, or interrupts masked, beforehand.
相關(guān)PDF資料
PDF描述
HD40C4082 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計(jì)算機(jī))
HD40A4084 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計(jì)算機(jī))
HD40C4084 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計(jì)算機(jī))
HD40C4384 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計(jì)算機(jī))
HD40C4388 Low-Voltage AS Microcomputers with On-Chip A/D Converter(帶片上A/D轉(zhuǎn)換器的低壓微計(jì)算機(jī))
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD40A4082FT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD40A4082H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD40A4082S 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD40A4240F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD40A4240H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS 4bit single-chip microcomputers
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