hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 124

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

5.6
5.6.1
Subactive mode is entered from watch mode if a timer A, timer F, timer G, IRQ
WKP
subactive mode is entered if a timer A, timer C, timer F, timer G, asynchronous counter, SCI3-1,
SCI3-2, IRQ
does not take place if the I bit of CCR is set to 1 or the particular interrupt is disabled in the
interrupt enable register.
5.6.2
Subactive mode is cleared by a SLEEP instruction or by a low input at the RES pin.
• Clearing by SLEEP instruction
If a SLEEP instruction is executed while the SSBY bit in SYSCR1 is set to 1 and TMA3 bit in
TMA is set to 1, subactive mode is cleared and watch mode is entered. If a SLEEP instruction is
executed while SSBY = 0 and LSON = 1 in SYSCR1 and TMA3 = 1 in TMA, subsleep mode is
entered. Direct transfer to active mode is also possible; see 5.8, Direct Transfer, below.
• Clearing by RES pin
Clearing by RES pin is the same as for standby mode; see 2. Clearing by RES pin in 5.3.2,
Clearing Standby Mode.
5.6.3
The operating frequency in subactive mode is set in bits SA1 and SA0 in SYSCR2. The choices
are ø
W
0
/2, ø
interrupt is requested while the LSON bit in SYSCR1 is set to 1. From subsleep mode,
Subactive Mode
Transition to Subactive Mode
Clearing Subactive Mode
Operating Frequency in Subactive Mode
W
4
/4, and ø
to IRQ
0
, or WKP
W
/8.
7
to WKP
0
interrupt is requested. A transition to subactive mode
0
, or WKP
7
to
109