HD64F2149YV datasheet(110/1075 Pages) RENESAS

110 / 1075 page

Section 3 MCU Operating Modes

Rev. 3.00 Jan 18, 2006 page 82 of 1044

REJ09B0280-0300

Bit 6—IOS Enable (IOSE): Controls the function of the

AS/IOS pin in expanded mode.

Bit 6

IOSE

Description

The

AS/IOS pin functions as the address strobe pin

(Low output when accessing an external area)

(Initial value)

The

AS/IOS pin functions as the I/O strobe pin

(Low output when accessing a specified address from H'(FF)F000 to H'(FF)F7FF)

Bit 3—External Reset (XRST): Indicates the reset source. When the watchdog timer is used, a

reset can be generated by watchdog timer overflow as well as by external reset input. XRST is a

read-only bit. It is set to 1 by an external reset and cleared to 0 by watchdog timer overflow.

Bit 3

XRST

Description

A reset is generated by watchdog timer overflow

A reset is generated by an external reset

(Initial value)

Bit 1—Host Interface Enable (HIE): This bit controls CPU access to the host interface

(HIF:XBS) data registers and control registers (HICR, IDR1, ODR1, STR1, IDR2, ODR2, and

STR2), the keyboard controller and MOS input pull-up control registers (KMIMR, KMPCR, and

KMIMRA), the 8-bit timer (channel X and Y) data registers and control registers (TCRX/TCRY,

TCSRX/TCSRY, TICRR/TCORAY, TICRF/TCORBY, TCNTX/TCNTY, TCORC/TISR,

TCORAX, and TCORBX), and the timer connection control registers (TCONRI, TCONRO,

TCONRS, and SEDGR).

Bit 1

HIE

Description

In areas H'(FF)FFF0 to H'(FF)FFF7 and H'(FF)FFFC to H'(FF)FFFF,

CPU access to 8-bit timer (channel X and Y) data registers and control

registers, and timer connection control registers, is permitted

(Initial value)

In areas H'(FF)FFF0 to H'(FF)FFF7 and H'(FF)FFFC to H'(FF)FFFF,

CPU access to host interface data registers and control registers, and

keyboard controller and MOS input pull-up control registers, is permitted

HD64F2149YV 数据表(PDF) 110 Page - Renesas Technology Corp

HD64F2149YV 数据表(HTML) 110 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

数据表下载

链接网址

HD64F2149YV 数据表(PDF) 110 Page - Renesas Technology Corp

HD64F2149YV 数据表(HTML) 110 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

数据表 下载

链接网址

数据表下载