M38K09RFS datasheet(110/328 Pages) RENESAS

110 / 328 page

FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 05, 2006

page 93 of 112

38K0 Group

REJ09B0337-0200

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

38K0 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 116 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.

M38K09RFS Datasheet(PDF) 110 Page - Renesas Technology Corp