Datasheet

Section 16 USB Function Module (USB)
R01UH0309EJ0500 Rev. 5.00 Page 995 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
USB bus state Normal
USBINTN
interrupt
IFR0/SURSF
IFR0/SURSS
IER0/SSRSME
RESUME
interrupt
Software
standby
Oscillator
System clock (φ)
Suspend Resume → Normal
(1)
(3)
(2)
(5)
(16)
IER0/SURSFE
(5) (16)
(11)
(8)
(9)
(9)
48-MHz USB
clock (cku)
(7) (14)
(12)
EXMSTPCRL/
MSTP17
(6) (13)
(4) (15)
(4) (15)
(10)
Two cycles of
48-MHz USB clock
Oscillation
settling
time
Software standby
(9)
Two cycles of
48-MHz USB clock
(t
OSC2
)
PLL USB clock
Figure 16.8 Timing of Transition to and Canceling Software Standby Mode