HMS87C5216 ETC1 [List of Unclassifed Manufacturers], HMS87C5216 Datasheet - Page 63

• Manufacturer Part Number: HMS87C5216
• Description: CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR UR(Universal Remocon) & WIRELESS KEYBOARD
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

15.4 RELEASE OPERATION OF STANDBY MODE
After standby mode is released, the operation begins according to
content of related interrupt register just before standby mode start
(Figure 15-4)
(1) Interrupt Enable Flag(I) of PSW = ``0``
Release by only interrupt which interrupt enable flag = ``1``, and
starts to execute from next to standby instruction (SLEEP or
STOP).
(2) Interrupt Enable Flag(I) of PSW = ``1``
Released by only interrupt which each interrupt enable flag =
``1``, and jump to the relevant interrupt service routine.
SEP. 2004 Ver 1.01
Figure 15-3 Release Timing of Standby Mode
[ SLEEP MODE ]
[ STOP MODE ]
release by interrupt
release by interrupt
RESET
RESET
clock
Xin
SLEEP command
SLEEP Mode
Note: When STOP instruction is used, B.I.T should guar-
antee the stabilization oscillation time. Thus, just before en-
tering STOP mode, clock of bit10 (PS10) of prescaler is
selected or peripheral hardware clock control bit (ENPCK)
to ``1``, Therefore the clock necessary for stabilization os-
cillation time should be input into B.I.T. otherwise, standby
mode is released by reset signal. In case of interrupt re-
quest flag and interrupt enable flag are both ``1``, standby
mode is not entered.
STOP Mode
2 machine cycle
Longer than
Program Setting Time by
OSC. time
stable OSC. Time
CKCTLR
Stable
Longer than
HMS87C5216