HD64F36024FX Datasheet, PDF (105/386 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 ROM
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.
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Rev. 4.00 Sep. 23, 2005 Page 77 of 354
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