HD6432670 Hitachi, HD6432670 Datasheet - Page 792

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

19.3
Block Configuration
Figure 19.5 shows the block configuration of 384-kbyte flash memory and figure 19.6 shows that
of 256-kbyte flash memory. The thick lines indicate erasing units, the narrow lines indicate
programming units, and the values are addresses. The 384-kbyte flash memory is divided into 64
kbytes (5 blocks), 32 kbytes (1 block), and 4 kbytes (8 blocks). The 256-kbyte flash memory is
divided into 64 kbytes (3 blocks), 32 kbytes (1 block), and 4 kbytes (8 blocks). Erasing is
performed in these divided units. Programming is performed in 128-byte units starting from an
address whose lower eight bits are H’00 or H’80.
Rev. 2.0, 04/02, page 746 of 906