HD6433682 ETC, HD6433682 Datasheet - Page 359

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

The H8/3687N has an on-chip 512-byte EEPROM. The block diagram of the EEPROM is shown
in figure 19.1.
19.1
Two writing methods:
1-byte write
Page write: Page size 8 bytes
Three reading methods:
Current address read
Random address read
Sequential read
Acknowledge polling possible
Write cycle time:
10 ms (power supply voltage Vcc = 2.7 V or more)
Write/Erase endurance:
10
Data retention:
10 years after the write cycle of 10
Interface with the CPU
I
Device code 1010
Sleep address code can be changed (initial value: 000)
The I
2
C bus interface (complies with the standard of Philips Corporation)
4
cycles/byte (byte write mode), 10
2
C bus is open to the outside, so the EEPROM can be directly accessed from the outside.
Features
Section 19 EEPROM
4
cycles (page write mode)
5
cycles/page (page write mode)
Rev. 3.00, 05/03, page 329 of 472