M41T11M6F View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
M41T11M6F Datasheet PDF : 30 Pages
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M41T11
Operation
Table 2.
Symbol
AC characteristics
Parameter(1)
Min Max Unit
fSCL
tLOW
tHIGH
tR
tF
tHD:STA
SCL clock frequency
Clock low period
Clock high period
SDA and SCL rise time
SDA and SCL fall time
START condition hold time
(after this period the first clock pulse is generated)
0
100 kHz
4.7
µs
4
µs
1
µs
300 ns
4
µs
tSU:STA
START condition setup time
(only relevant for a repeated start condition)
4.7
µs
tSU:DAT Data setup time
tHD:DAT(2) Data hold time
250
ns
0
µs
tSU:STO STOP condition setup time
4.7
µs
tBUF Time the bus must be free before a new transmission can start 4.7
µs
1. Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 2.0 to 5.5 V (except where noted).
2. Transmitter must internally provide a hold time to bridge the undefined region (300 ns max.) of the falling
edge of SCL.
2.2
Read mode
In this mode, the master reads the M41T11 slave after setting the slave address (see
Figure 8). Following the write mode control bit (R/W = 0) and the acknowledge bit, the word
address An is written to the on-chip address pointer. Next the START condition and slave
address are repeated, followed by the READ mode control bit (R/W = 1). At this point, the
master transmitter becomes the master receiver. The data byte which was addressed will be
transmitted and the master receiver will send an acknowledge bit to the slave transmitter
(see Figure 9). The address pointer is only incremented on reception of an acknowledge bit.
The M41T11 slave transmitter will now place the data byte at address An + 1 on the bus. The
master receiver reads and acknowledges the new byte and the address pointer is
incremented to An + 2.
This cycle of reading consecutive addresses will continue until the master receiver sends a
STOP condition to the slave transmitter.
An alternate READ mode may also be implemented, whereby the master reads the M41T11
slave without first writing to the (volatile) address pointer. The first address that is read is the
last one stored in the pointer (see Figure 10 on page 12).
Doc ID 6103 Rev 10
11/30
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