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[v1-07] 2015-Feb-27

AS5510 − Detailed Description

Automatic Increment of Address Pointer

The AS5510 slave automatically increments the address pointer

after each byte transferred. The increase of the address pointer

is independent from the address being valid or not.

Invalid Addresses

If the user sets the address pointer to an invalid address, the

address byte is not acknowledged. Nevertheless a read or write

cycle is possible. The address pointer is increased after each

byte.

Reading

When reading from a wrong address, the AS5510 slave returns

all zero. The address pointer is increased after each byte.

Sequential read over the whole address range is possible

including address overflow.

Write

A write to a wrong address is not acknowledged by the AS5510

slave, although the address pointer is increased. When the

address pointer points to a valid address again, a successful

write accessed is acknowledged. Page write over the whole

address range is possible including address overflow.

SDA, SCL Input Filters

Input filters for SDA and SCL inputs are included to suppress

noise spikes of less than 50ns. Furthermore the SDA line is

delayed by 120ns to provide an internal hold time for Start/Stop

detection to bridge the undefined region of the falling edge of

SCL. The delay needs to be smaller than tHD.STA 260ns. For

Standard-mode and Fast-mode an internal hold time of 300ns

is required, which is not covered by the AS5510 slave.

AS5510 데이터시트(PDF) 19 Page - ams-OSRAM AG