AS3956 datasheet(73/107 Pages) AMSCO

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ams Datasheet

Page 73

[v1-11] 2018-Nov-14

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AS3956 − Detailed Description

EEPROM Write

In order to program an EEPROM block, seven bytes shall be sent

(slave address, mode byte, block address byte and 4 bytes of

data, all of them MSB first). Actual EEPROM programming is

started with rising edge of ACK of the last byte. The EEPROM

write is initiated after 4th data byte. All other bytes that might

follow are rejected (a NAK on I²C line is returned).

Figure 75:

Writing EEPROM Data with Auto-Incrementing Address over I²C

Figure 76:

I²C Timing

Symbol

Parameter

Min

Typ

Max

Unit

Note

General Timing (VDD_IO= 3.3V, Temperature 25°C)

fSCL_I2C

SCL clock frequency

100

1000

kHz

TEW_I2C

EEPROM write timing.

Rising edge of ACK of the

last byte to interrupt

io_eewr

8.3

9.5

Tgs_i2c

Glitch suppression on

SDA, SCL lines

Data

Slave address

EEPROM page

address

Mode Byte

SCL

SDA

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