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| 型號： | HD404356H |
| 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) |
| 文件頁數(shù)： | 25/100頁 |
| 文件大?。?/td> | 398K |
| 代理商： | HD404356H |
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HD404358 Series
25
Reset by
RESET
input or
by watchdog timer
Standby mode
Stop mode
SBY
instruction
Interrupt
Active
mode
RESET 1
RESET 2
RAME = 0
RAME = 1
STOP
instruction
STOPC
Oscillate
Stop
f
cyc
f
OSC
:
CPU
:
PER
:
Oscillate
f
cyc
f
cyc
f
OSC
:
CPU
:
PER
:
Stop
Stop
Stop
f
OSC
:
CPU
:
PER
:
Main oscillation frequency
f
OSC
/4
System clock
Clock for other peripheral
functions
f
OSC
:
f
cyc
:
CPU
:
PER
:
Figure 11 MCU Status Transitions
Active Mode:
All MCU functions operate according to the clock generated by the system oscillator OSC
1
and OSC
2
.
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 12.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD404356S | 4-bit HMCS400-Series microcomputer |
| HD404358 | 4-bit HMCS400-Series microcomputer |
| HD404358H | 4-bit HMCS400-Series microcomputer |
| HD404358S | 4-bit HMCS400-Series microcomputer |
| HD40A4354 | 4-bit HMCS400-Series microcomputer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| HD404358H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer |
| HD404358R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HMCS43XXFamily User＇s Manual/Device |
| HD404358S | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit HMCS400-Series microcomputer |
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