HD6433682 ETC, HD6433682 Datasheet - Page 364

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

The next one bit of the slave address is the R/W code. 0 is for a write and 1 is for a read.
The EEPROM turns to a standby state if the device code is not "1010" or slave address code
doesn’t coincide.
Table 19.2 Slave Addresses
19.4.7
There are two types write operations; byte write operation and page write operation. To initiate
the write operation, input 0 to R/W code following the slave address.
1. Byte Write
Rev. 3.00, 05/03, page 334 of 472
Bit
7
6
5
4
3
2
1
A write operation requires an 8-bit data of a 7-bit slave address with R/W code = "0". Then
the EEPROM sends acknowledgement "0" at the ninth bit. This enters the write mode. Then,
two bytes of the memory address are received from the MSB side in the order of upper and
lower. Upon receipt of one-byte memory address, the EEPROM sends acknowledgement "0"
and receives a following a one-byte write data. After receipt of write data, the EEPROM sends
acknowledgement "0". If the EEPROM receives a stop condition, the EEPROM enters an
internally controlled write cycle and terminates receipt of SCL and SDA inputs until
completion of the write cycle. The EEPROM returns to a standby mode after completion of
the write cycle.
The byte write operation is shown in figure 19.3.
Bit name
Device code D3
Device code D2
Device code D1
Device code D0
Slave address code A2
Slave address code A1
Slave address code A0
Write Operations
Initial Value Setting Value Remarks
0
0
0
1
0
1
0
A2
A1
A0
The initial value can be changed
The initial value can be changed
The initial value can be changed