hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 14
hd64338023s
Manufacturer Part Number
hd64338023s
Description
Renesas 8-bit Single-chip Microcomputer Super Low Power Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HD64338023S.pdf
(697 pages)
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Rev. 7.00 Mar 10, 2005 page xiv of xlii
Item
6.5.1 Features
6.5.2 Block Diagram
Figure 6.7 Block
Diagram of Flash
Memory
6.5.3 Block
Configuration
Page
154
155
156
Revision (See Manual for Details)
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.
Figure amended
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.
Flash memory
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