Datasheet

43
AT30TSE752A/754A/758A [DATASHEET]
Atmel-8854G-DTS-AT30TSE752A-754A-758A-Datasheet_102014
11.2 SMBus Timeout
The AT30TSE752A/754A/758A supports the SMBus Timeout feature in which the AT30TSE752A/754A/758A will reset
its serial interface and release the SMBus (stop driving the bus and let SDA float high) if the SCL pin is held low for more
than the minimum t
TIMEOUT
specification. The AT30TSE752A/754A/758A will be ready to accept a new Start condition
before t
TIMEOUT
maximum has elapsed.
Figure 11-2. SMBus Timeout
11.3 General Call
The AT30TSE752A/754A/758A will respond to an I
2
C General Call address (0000000) from the Master only if the eighth
bit (the LSB) of the General Call address byte is zero. If the General Call address byte is 00000000, then the device will
send an ACK to the Master and await a command byte from the Master.
If the Master sends a command byte of 04h, then the AT30TSE752A/754A/758A will re-latch the status of its address
pins in case the system has assigned a new address to the device. If the Master sends a command byte of 06h (General
Call Reset), then the AT30TSE752A/754A/758A will re-latch the status of its address pins and perform a reset sequence.
The reset sequence will cause the contents of the Nonvolatile Data Registers to be copied into the Volatile Data
Registers, and the device will be busy for a maximum time of t
POR
during the reset and copying operation.
Device will release Bus and
be ready to accept a new
Start Condition within this Time
t
TIMEOUT (MAX)
t
TIMEOUT (MIN)
SCL