hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 196
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)
- Current page: 196 of 697
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Section 6 ROM
6.5
6.5.1
The features of the 32-Kbyte or 16-Kbyte flash memory built into the flash memory versions are
summarized below.
• Programming/erase methods
• Reprogramming capability
• On-board programming
• Programmer mode
• Automatic bit rate adjustment
• Programming/erasing protection
• Power-down mode
Note: The system clock oscillator must be used when programming or erasing the flash memory
Rev. 7.00 Mar 10, 2005 page 154 of 652
REJ09B0042-0700
The flash memory is programmed 128 bytes at a time. Erase is performed in single-block
The HD64F38024R, HD64F38124, and HD64F38122 can be reprogrammed up to 1,000
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
For data transfer in boot mode, this LSI's bit rate can be automatically adjusted to match
Sets software protection against flash memory programming/erasing.
The power supply circuit is partly halted in the subactive mode and can be read in the
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.
times and the HD64F38024 up to 100 times.
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.
power-down mode.
of the HD64F38124 and HD64F38122.
Flash Memory Overview
Features
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