SH7708 datasheet(195/633 Pages) RENESAS

tên linh kiện	SH7708

Giải thích chi tiết về linh kiện	SuperH??RISC engine

PDF	633 Pages

Scroll/Zoom	100%

nhà sản xuất	RENESAS [Renesas Technology Corp]

Trang chủ	http://www.renesas.com

Logo

195 / 633 page

177

9.8

Overview of the Watchdog Timer (WDT)

9.8.1

Block Diagram of the WDT

Figure 9.4 shows a block diagram of the WDT.

WTCSR

Standby

control

Bus interface

WTCNT

Divider

Clock selector

Clock

Internal bus

Standby

mode

Peripheral

clock

Standby

cancellation

Reset

control

Clock selection

WDT

Overflow

Internal

reset

request

Interrupt

control

Interrupt

request

WTCSR:

WTCNT:

Watchdog timer control/status register

Watchdog timer counter

Figure 9.4 Block Diagram of the WDT

9.8.2

The WDT has two registers that select the clock, switch the timer mode, and perform other

functions. Table 9.5 shows the WDT register.

Table 9.5

Name

Abbreviation

R/W

Size

Initial Value

Address

Watchdog timer counter

WTCNT

R/W*

R: byte;

W: word*

H'00

H'FFFFFF84

Watchdog timer

control/status register

WTCSR

R/W*

R: byte;

W: word*

H'00

H'FFFFFF86

Note: * Write with a word access. Write H'5A and H'A5, respectively, in the upper bytes. Byte or

longword writes are not possible. Read with a byte access.

SH7708 bảng dữ liệu(PDF) 195 Page - Renesas Technology Corp

SH7708 bảng dữ liệu(HTML) 195 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL