HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 701

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

The features of the flash memory in the flash memory version are summarized below.
The block diagram of the flash memory is shown in figure 19.1.
19.1
• Size: 256 kbytes
• Programming/erasing methods
• Reprogramming capability
• Two on-board programming modes
• PROM programmer mode
• Automatic bit rate adjustment
• Programming/erasing protection
ROM3251A_020020030800
⎯ The flash memory is programmed 128 bytes at a time. Erase is performed in single-block
See section 26.5, Flash Memory Characteristics.
⎯ Boot mode
⎯ User program mode
⎯ On-board programming/erasing can be done in boot mode, in which the boot program built
⎯ Flash memory can be programmed/erased in programmer mode using a PROM
⎯ With data transfer in boot mode, this LSI's bit rate can be automatically adjusted to match
⎯ Sets software protection against flash memory programming/erasing/verifying.
units. The flash memory is configured as follows: 64 kbytes × 3 blocks, 32 kbytes × 1
block, and 4 kbytes × 8 blocks. To erase the entire flash memory, each block must be
erased in turn.
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.
programmer, as well as in on-board programming mode.
the transfer bit rate of the host computer.
Features
Section 19 Flash Memory (F-ZTAT Version)
Rev.4.00 Mar. 27, 2008 Page 657 of 882
19. Flash Memory (F-ZTAT Version)
REJ09B0108-0400