HD6433682 ETC, HD6433682 Datasheet - Page 368

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

3. Sequential Read
Rev. 3.00, 05/03, page 338 of 472
SCL
SDA
This is a mode to read the data sequentially. Data is sequential read by either a current address
read or a random address read. If the EEPROM receives acknowledgement "0" after 1-byte
read data is output, the read address is incremented and the next 1-byte read data are coming
out. Data is output sequentially by incrementing addresses as long as the EEPROM receives
acknowledgement "0" after the data is output. The address will roll over and returns address
zero if it reaches the last address H'01FF. The sequential read can be continued after roll over.
The sequential read is terminated if the EEPROM receives acknowledgement "1" (release of a
bus without acknowledgement is allowed) and a following stop condition as the same manner
as in the random address read.
The condition of a sequential read when the current address read is used is shown in figure
19.7.
Legend:R/ : R/
Figure 19.7 Sequential Read Operation (when current address read is used)
condition
Start
ACK: acknowledge
1
2
code (0 is for a write and 1 is for a read)
3
Slave address
4
5
6
7
R/
8
ACK
9
1
D7
Read Data
8
D0
ACK
9
D7
1
Read Data
D0
8
ACK
9
conditon
Stop