47L16 datasheet(9/40 Pages) MICROCHIP

9 / 40 page

 2015-2016 Microchip Technology Inc.

DS20005371C-page 9

47L04/47C04/47L16/47C16

FIGURE 2-2:

ACKNOWLEDGE TIMING

TABLE 2-1:

ACKNOWLEDGE TABLE FOR SRAM WRITES

Instruction

ACK

Address

MSB

ACK

Address

LSB

ACK

Data

Byte

ACK

SRAM Write in Unprotected Block

ACK

Address

ACK

Address

ACK

Data

ACK

SRAM Write in Protected Block

ACK

Address

ACK

Address

ACK

Data

NoACK

TABLE 2-2:

ACKNOWLEDGE TABLE FOR CONTROL REGISTER WRITES

Instruction

ACK

Address

ACK

Data Byte

ACK

STATUS Register Write

ACK

00h

ACK

Data

ACK

Software Store Command

ACK

55h

ACK

33h

ACK

Software Recall Command

ACK

55h

ACK

DDh

ACK

Write Invalid Value to COMMAND Register

ACK

55h

ACK

Invalid Command

NoACK

Write to Invalid Register Address

ACK

Invalid Address

NoACK

Don’t Care

NoACK

SCL

Transmitter must release the SDA line at this point

allowing the Receiver to pull the SDA line low to

acknowledge the previous eight bits of data.

Receiver must release the SDA line at this point

so the Transmitter can continue sending data.

Data from transmitter

SDA

Acknowledge

Bit

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