HD64F36022 datasheet(103/384 Pages) RENESAS

103 / 384 page

Section 7 ROM

ROM3321A_000120030300

Rev. 4.00 Sep. 23, 2005 Page 77 of 354

REJ09B0025-0400

Section 7 ROM

The features of the 32-kbyte (4 kbytes of them are the control program area for E7 or E8) flash

memory built into the HD64F36024 and HD64F36014 are summarized below.

• Programming/erase methods

 The flash memory is programmed 128 bytes at a time. Erase is performed in single-block

units. The flash memory is configured as follows: 1 kbyte

× 4 blocks and 28 kbytes × 1

block. To erase the entire flash memory, each block must be erased in turn.

• Reprogramming capability

 The flash memory can be reprogrammed up to 1,000 times.

• On-board programming

 On-board programming/erasing can be done in boot mode, in which the boot program built

into the chip is started to erase or program of the entire flash memory. In normal user

program mode, individual blocks can be erased or programmed.

• Automatic bit rate adjustment

 For data transfer in boot mode, this LSI's bit rate can be automatically adjusted to match

the transfer bit rate of the host.

• Programming/erasing protection

 Sets software protection against flash memory programming/erasing.

HD64F36022 Datasheet(PDF) 103 Page - Renesas Technology Corp