H8SSLASH2218 datasheet(580/750 Pages) RENESAS

Il numero della parte	H8S/2218

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	750 Pages

Scroll/Zoom	100%

Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

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580 / 750 page

Section 14 Universal Serial Bus (USB)

Rev.6.00 Jun. 03, 2008 Page 532 of 698

REJ09B0074-0600

(1)

(2)

(3)

(4)

(5)

(6)

(7)

Power-down

mode

4 ms

wait for

oscillator

to stabilize

2 ms wait

for USB

operation

clock

to stabilize

USB module stop state

USB operation

resumes

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(18)

(21)

(22)

(23)

USB bus state

IRQ6

ISR/IRQ6F

UIFR3/SPRSi

USPND

UIFR3/SPRSs

UIFR3/SOF

USB module

stop

power-down mode

System clock

Normal Suspend

SOF

USB internal

clock

UIFR3/

CK48READY

CLK48

(48MHz)

USB operating

clock (48MHz)

(14)

(19)

(20)

(24)

Resume

→ Normal

Figure 14.29 Timing Chart

14.8.13

USB External Circuit Example

The USB external circuit examples are used for reference only. In actual board design, carefully

check the system operation.

In addition, the USB external circuit examples cannot guarantee the correct system operation. The

user must individually take measures against external surges or ESD noise by incorporating

protective diodes or other components if necessary.

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