hn58x24512fpie Renesas Electronics Corporation., hn58x24512fpie Datasheet - Page 10

• Manufacturer Part Number: hn58x24512fpie
• Description: Two-wire Serial Interface 512k Eeprom 64-kword ?? 8-bit
• Manufacturer: Renesas Electronics Corporation.

HN58X24512I
Acknowledge
All addresses and data words are serially transmitted to and from in 8-bit words. The receiver sends a
zero to acknowledge that it has received each word. This happens during ninth clock cycle. The
transmitter keeps bus open to receive acknowledgment from the receiver at the ninth clock. In the write
operation, EEPROM sends a zero to acknowledge after receiving every 8-bit words. In the read operation,
EEPROM sends a zero to acknowledge after receiving the device address word. After sending read data,
the EEPROM waits acknowledgment by keeping bus open. If the EEPROM receives zero as an
acknowledge, it sends read data of next address. If the EEPROM receives acknowledgment "1" (no
acknowledgment) and a following stop condition, it stops the read operation and enters a stand-by mode.
If the EEPROM receives neither acknowledgment "0" nor a stop condition, the EEPROM keeps bus open
without sending read data.
Acknowledge Timing Waveform
Rev.2.00, Dec.13.2004, page 10 of 17
SDA IN
SDA OUT
SCL
1
2
8
Acknowledge
out
9