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參數(shù)資料
| 型號(hào)： | HD404354H |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-bit HMCS400-Series microcomputer |
| 中文描述： | 4位HMCS400系列微機(jī) |
| 文件頁(yè)數(shù)： | 27/100頁(yè) |
| 文件大?。?/td> | 398K |
| 代理商： | HD404354H |
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HD404358 Series
27
Stop mode
Oscillator
Internal
clock
STOP instruction execution
t
res
≥
t
RC
(stabilization period)
t
res
RESET
or
STOPC
Figure 13 Timing of Stop Mode Cancellation
Stop Mode Cancellation by
STOPC
:
The MCU enters active mode from stop mode by inputting
STOPC
as well as by
R E SE T
. In either case, the MCU starts instruction execution from the starting address
(address 0) of the program. However, the value of the RAM enable flag (RAME: $021, bit 3) differs
between cancellation by
STOPC
and by
RESET
. When stop mode is cancelled by
R E SE T
, RAME = 0;
when cancelled by
STOPC
, RAME = 1.
RESET
can cancel all modes, but
STOPC
is valid only in stop
mode;
STOPC
input is ignored in other modes. Therefore, when the program requires to confirm that stop
mode has been cancelled by
STOPC
(for example, when the RAM contents before entering stop mode is
used after transition to active mode), execute the TEST instruction to the RAM enable flag (RAME) at the
beginning of the program.
MCU Operation Sequence:
The MCU operates in the sequence shown in figure 15. It is reset by an
asynchronous
RESET
input, regardless of its status.
The low-power mode operation sequence is shown in figure 16. With the IE flag cleared and an interrupt
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 flags are cleared or all interrupts are masked.
Power on
RESET
= 0
RAME = 0
Reset MCU
MCU
operation
cycle
No
Yes
Figure 14 MCU Operating Sequence (Power On)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD404354S | 4-bit HMCS400-Series microcomputer |
| HD404356 | 4-bit HMCS400-Series microcomputer |
| HD404356H | 4-bit HMCS400-Series microcomputer |
| HD404356S | 4-bit HMCS400-Series microcomputer |
| HD404358 | 4-bit HMCS400-Series microcomputer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD404354S | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer |
| HD404356 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer |
| HD404356H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer |
| HD404356S | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer |
| HD404358 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer |
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