38K2 datasheet(130/358 Pages) RENESAS

130 / 358 page

FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 15, 2006

page 111 of 130

38K2 Group

REJ09B0338-0200

HARDWARE

(2) Parallel I/O Mode

Parallel I/O mode is the mode which parallel output and input soft-

ware command, address, and data required for the operations

(read, program, erase, etc.) to a built-in flash memory. Use the ex-

clusive external equipment flash programmer which supports the

38K2 Group (flash memory version). Refer to each programmer

maker’s handling manual for the details of the usage.

User ROM and Boot ROM Areas

In parallel I/O mode, the user ROM and boot ROM areas shown in Fig-

ure 146 can be rewritten. Both areas of flash memory can be operated

on in the same way.

The boot ROM area is 4 Kbytes in size. It is located at addresses

F00016 through FFFF16. Make sure program and block erase opera-

tions are always performed within this address range. (Access to any

location outside this address range is prohibited.)

In the Boot ROM area, an erase block operation is applied to only

one 4 Kbyte block.

The boot ROM area has had a standard serial I/O mode control pro-

gram stored in it when shipped from the Mitsubishi factory. There-

fore, using the device in standard serial I/O mode, you must perform

program and block erase in the user ROM area.

38K2 Datasheet(PDF) 130 Page - Renesas Technology Corp