HN58X24128TI HITACHI [Hitachi Semiconductor], HN58X24128TI Datasheet - Page 7

• Manufacturer Part Number: HN58X24128TI
• Description: Two-wire serial interface, 128k EEPROM (16-kword x 8-bit), 256k EEPROM (32-kword x 8-bit)
• Manufacturer: HITACHI [Hitachi Semiconductor]

Pin Function
Serial Clock (SCL)
The SCL pin is used to control serial input/output data timing. The SCL input is used to positive edge
clock data into EEPROM device and negative edge clock data out of each device. Maximum clock rate is
400 kHz.
Serial Input/Output Data (SDA)
The SDA pin is bidirectional for serial data transfer. The SDA pin needs to be pulled up by resistor as that
pin is open-drain driven structure. Use proper resistor value for your system by considering V
the SDA pin capacitance. Except for a start condition and a stop condition which will be discussed later,
the SDA transition needs to be completed during SCL low period.
Data Validity (SDA data change timing waveform)
Note:
SCL
SDA
High-to-low and low-to-high change of SDA should be done during SCL low periods.
change
Data
HN58X24128I/HN58X24256I
change
Data
OL
, I
OL
and
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