m24lr16e-r STMicroelectronics, m24lr16e-r Datasheet - Page 37

• Manufacturer Part Number: m24lr16e-r
• Description: 16 Kbit Eeprom With Password Protection, Dual Interface & Energy Harvesting 400 Khz I²c Bus & Iso 15693 Rf Protocol At 13.56 Mhz
• Manufacturer: STMicroelectronics

M24LR16E
5.10
Minimizing system delays by polling on ACK
During the internal write cycle, the device disconnects itself from the bus, and writes a copy
of the data from its internal latches to the memory cells. The maximum I²C write time (t
shown in
can be used by the bus master.
The sequence, as shown in
1.
2.
3.
Initial condition: a write cycle is in progress.
Step 1: the bus master issues a Start condition followed by a device select code (the
first byte of the new instruction).
Step 2: if the device is busy with the internal write cycle, no Ack is returned and the bus
master goes back to Step 1. If the device has terminated the internal write cycle, it
responds with an Ack, indicating that the device is ready to receive the second part of
the instruction (the first byte of this instruction having been sent during Step 1).
Table 123
, but the typical time is shorter. To make use of this, a polling sequence
Figure
Doc ID 018932 Rev 7
10, is:
I
2
C device operation
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