參數(shù)資料
型號(hào): HD40A4668
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(jì)算機(jī))
中文描述: 低電壓如同在微機(jī)芯片的DTMF產(chǎn)生電路(帶雙音多頻電路的低電壓微計(jì)算機(jī))
文件頁數(shù): 38/142頁
文件大小: 894K
代理商: HD40A4668
HD404669 Series
38
Direct Transition from Subactive Mode to Active Mode:
Available by controlling the direct transfer on
flag (DTON: $020, bit 3) and the low speed on flag (LSON: $020, bit 0). The procedures are described
below:
Set LSON to 0 and DTON to 1 in subactive mode.
Execute the STOP or SBY instruction.
The MCU automatically enters active mode from subactive mode after waiting for the MCU internal
processing time and oscillation stabilization time (figure 19).
Notes: 1. The DTON flag can be set only in subactive mode. It is always reset in active mode.
2. The transition time (T
D
) from subactive mode to active mode:
t
RC
< T
D
< T + t
RC
Subactive mode
Interrupt strobe
Direct transfer
completion timing
MCU internal
processing time
Oscillation
stabilization
time
Active mode
T
T
t
RC
T:
t :
T :
D
STOP/SBY instruction execution
(Set LSON = 0, DTON = 1)
Interrupt frame period
Oscillation stabilization time
Direct transition time
Figure 19 Direct Transition Timing
MCU Operation Sequence:
The MCU operates in the sequence shown in figure 20. It is reset by an
asynchronous RESET input, regardless of its status.
With the IE flag cleared and an interrupt request flag set together with its interrupt mask cleared, if a
STOP/SBY instruction is executed, the instruction is cancelled (regarded as an NOP) and the following
instruction is executed. Before executing a STOP/SBY instruction, make sure all interrupt request flags are
cleared or all interrupts are masked.
相關(guān)PDF資料
PDF描述
HD40A4669 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
HD404668 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
HD404669 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
HD407A4669 Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
HD404719FS Five timer/counters
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD40A4668H 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
HD40A4669 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
HD40A4669H 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
HD40L4818H 制造商:Renesas Electronics Corporation 功能描述:
HD40-M 制造商:Tamura Corporation of America 功能描述: