MCP98243-BE/MNY MICROCHIP [Microchip Technology], MCP98243-BE/MNY Datasheet - Page 14

• Manufacturer Part Number: MCP98243-BE/MNY
• Description: Memory Module Temperature Sensor w/ EEPROM for SPD
• Manufacturer: MICROCHIP [Microchip Technology]

MCP98243
4.1.5
After the Start condition, each bit of data in
transmission needs to be settled for a time specified by
t
“Sensor And EEPROM Serial Interface Timing
Specifications” on Page 5).
4.1.6
Each receiving device, when addressed, is obliged to
generate an ACK bit after the reception of each byte.
The master device must generate an extra clock pulse
for ACK to be recognized.
The acknowledging device pulls down the SDA line for
t
the master. SDA also needs to remain pulled down for
t
During read, the master must signal an End-of-Data
(EOD) to the slave by not generating an ACK bit (NAK)
once the last bit has been clocked out of the slave. In
this case, the slave will leave the data line released to
enable the master to generate the Stop condition.
DS22153B-page 14
SU-DATA
SU-DATA
H-DATA
after a high-to-low transition of SCL.
before the low-to-high transition of SCL from
before SCL toggles from low-to-high (see
DATA VALID
ACKNOWLEDGE (ACK/NAK)
4.1.7
If the SCL stays low or high for time specified by t
the MCP98243 temperature sensor resets the serial
interface. This dictates the minimum clock speed as
specified in the specification. However, the EEPROM
does not reset the serial interface. Therefore, the
master can hold the clock indefinitely to process data
from the EEPROM.
TIME OUT (MCP98243, SENSOR
ONLY)
© 2009 Microchip Technology Inc.
OUT
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