HD64F2149YV datasheet(716/1075 Pages) RENESAS

Nome de Peças	HD64F2149YV

Descrição Electrónicos	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1075 Pages

Scroll/Zoom	100%

Fabricante Electrônico	RENESAS [Renesas Technology Corp]

Página de início	http://www.renesas.com

Logo

716 / 1075 page

Section 22 ROM

Rev. 3.00 Jan 18, 2006 page 688 of 1044

REJ09B0280-0300

22.1.2

The chip on-chip ROM is controlled by the operating mode and register MDCR. The register

configuration is shown in table 22.1.

Table 22.1

ROM Register

Abbreviation

R/W

Initial Value

Address*

Mode control register

MDCR

R/W

Undefined

Depends on the operating mode

H'FFC5

Note:

Lower 16 bits of the address.

22.2

22.2.1

Mode Control Register (MDCR)

Bit

Initial value

Read/Write

EXPE

—*

R/W*

—

MDS0

—*

—

MDS1

—*

Note: * Determined by the MD1 and MD0 pins.

MDCR is an 8-bit read-only register used to set the chip operating mode and monitor the current

operating mode.

The EXPE bit is initialized in accordance with the mode pin states by a reset and in hardware

standby mode.

Bit 7—Expanded Mode Enable (EXPE): Sets expanded mode. In mode 1, EXPE is fixed at 1

and cannot be modified. In modes 2 and 3, EXPE has an initial value of 0 and can be read or

written.

Bit 7

EXPE

Description

Single-chip mode selected

Expanded mode selected

HD64F2149YV Folha de dados(PDF) 716 Page - Renesas Technology Corp

HD64F2149YV Folha de dados(HTML) 716 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

Folha de dados Download

Ligação URL