isd5100 Winbond Electronics Corp America, isd5100 Datasheet - Page 37

• Manufacturer Part Number: isd5100
• Description: Single-chip 1 To 16 Minutes Duration Voice Record/playback Devices With Digital Storage Capability
• Manufacturer: Winbond Electronics Corp America

The Digital Read command utilizes the combined I
the chip using the write data direction. Then the data direction is reversed by sending a repeated
start condition, and the slave address with R/W set to 1. After this, the slave device (ISD5100-
Series) begins to send data to the master until the master generates a NACK. If the part encounters
an overflow condition, the
possible due to the master generating ACK signals.
Digital Write and Digital Read can be done a “block” at a time. Thus, only 64 bits need be read in
each Digital Read command sequence.
An explanation and graphical representation of the Erase, Write and Read operations are found below.
Note: All sequences assumes that the chip is in power-down mode before the commands are sent.
Erase
=====
I2CStart
SendByte(0x80)
WaitACK
WaitSCLHigh
SendByte(0xc0)
WaitACK
WaitSCLHigh
I2CStop
I2CStart
SendByte(0x80)
WaitACK
WaitSCLHigh
SendByte(0xd1)
WaitACK
WaitSCLHigh
SendByte(row/256) - high address byte
7.5.3. Reading Digital Data
7.5.4. Example Command Sequences
7.5.4.1. Erase Digital Data
- Enter Digital Mode Command
- Write, Slave address zero
- Write, Slave address zero
- Digital Erase Command
INT
pin is pulled LOW. No other communication with the master is
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2
C command format. That is, a command is sent to
Publication Release Date: May 16, 2007
ISD5100 SERIES
Revision 1.4