參數(shù)資料
型號: HD404369S
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer
中文描述: 4位HMCS400系列微機
文件頁數(shù): 26/115頁
文件大小: 452K
代理商: HD404369S
HD404369 Series
26
Operating Modes
The MCU has five operating modes as shown in table 17. The operations in each mode are listed in tables
18 and 19. Transitions between operating modes are shown in figure 11.
Active Mode:
All MCU functions operate according to the clock generated by the system oscillator OSC
1
and OSC
2
.
Table 17
Operating Modes and Clock Status
Mode Name
Active
RESET
cancellation,
interrupt
STOPC
cancellation in stop
mode, STOP/SBY
instruction in
subactive mode
(when direct transfer
is selected)
Standby
Stop
Watch
Subactive
*
2
INT
or timer A
interrupt request
from watch
mode
Activation method
SBY
instruction
STOP
instruction when
TMA3 = 0
STOP
instruction when
TMA3 = 1
Status System
oscillator
OP
OP
Stopped
Stopped
Stopped
Subsystem
oscillator
OP
OP
*
1
OP
OP
OP
Cancellation
method
RESET
input,
STOP/SBY instruction
RESET
input,
interrupt
request
RESET
input,
STOPC
input in
stop mode
RESET
input,
INT
or timer A
interrupt request
RESET
input,
STOP/SBY
instruction
Notes: OP implies in operation
1. Operating or stopping the oscillator can be selected by setting bit 3 of the system clock select
register 1 (SSR1: $027).
2. Subactive mode is an optional function; specify it on the function option list.
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