HD64338024 datasheet(14/697 Pages) RENESAS

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Rev. 7.00 Mar 10, 2005 page xiv of xlii

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6.5.1 Features

154

Description and note amended

The features of the 32-Kbyte or 16-Kbyte flash memory built

into the flash memory versions are summarized below.

• Programming/erase methods

— The flash memory is programmed 128 bytes at a time.

Erase is performed in single-block units. On the HD64F38024,

HD64F38024R, and HD64F38124 the flash memory is

configured as follows: 1 Kbyte × 4 blocks, 28 Kbytes × 1 block.

On the HD64F38122 the flash memory is configured as follows:

1 Kbyte × 4 blocks, 12 Kbytes × 1 block. To erase the entire

flash memory, each block must be erased in turn.

• Reprogramming capability

— The HD64F38024R, HD64F38124, and HD64F38122 can be

reprogrammed up to 1,000 times and the HD64F38024 up to

100 times.

Note: The system clock oscillator must be used when

programming or erasing the flash memory of the HD64F38124

and HD64F38122.

6.5.2 Block Diagram

Figure 6.7 Block

Diagram of Flash

Memory

155

Figure amended

Flash memory

6.5.3 Block

Configuration

156

Description amended

Figure 6.8 shows the block configuration of the flash memory.

The thick lines indicate erasing units, the narrow lines indicate

programming units, and the values are addresses. In versions

with 32 Kbytes of flash memory, the flash memory is divided

into 1 Kbyte × 4 blocks and 28 Kbytes × 1 block. In versions

with 16 Kbytes of flash memory, the flash memory is divided

into 1 Kbyte × 4 blocks and 12 Kbytes × 1 block. Erasing is

performed in these units.

Programming is performed in 128-byte units starting from an

address with lower eight bits H'00 or H'80.

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