參數(shù)資料
型號: HD404369H
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): 32/115頁
文件大?。?/td> 452K
代理商: HD404369H
HD404369 Series
32
frame timing, but it is regarded as input synchronously with the second interrupt strobe clock after the
falling edge. An overflow and interrupt request in timer A is generated synchronously with the interrupt
strobe timing.
t
RC
T
T
X
T
T:
t :
Interrupt frame length
Oscillation stabilization period
(During the transition
from watch mode to
active mode only)
Interrupt strobe
INT
0
Interrupt request
generation
Active mode
Watch mode
Active mode
Oscillation
stabilization period
T + t
RC
T
X
2T + t
RC
Figure 14 Interrupt Frame
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 16).
Notes: 1. The DTON flag ($020, bit 3) 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
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