TMP86C993XB Toshiba, TMP86C993XB Datasheet - Page 176
TMP86C993XB
Manufacturer Part Number
TMP86C993XB
Description
EMULATION CHIP FOR TMP86F SSOP
Manufacturer
Toshiba
Datasheet
1.TMP86C993XB.pdf
(246 pages)
Specifications of TMP86C993XB
Accessory Type
Adapter
For Use With/related Products
TMP86F SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15.6
Data Transfer of I
15.6.5
SCL pin
SDA pin
SCL (Bus)
LRB
BB
PIN
transferring data. The following explains how to restart a serial bus interface circuit.
pin is released. Since a stop condition is not generated on a bus, a bus is assumed to be in a busy state from other
devices. Test the BB until it becomes “0” to check that the SCL pin of a serial bus interface circuit is released.
Test the LRB until it becomes “1” to check that the SCL line on a bus is not pulled-down to the low level by
other devices. After confirming that a bus stays in a free state, generate a start condition with procedure "15.6.2
Start condition and slave address generation".
restarting to confirm that a bus is free until the time to generate a start condition.
2
C Bus
Restart is used to change the direction of data transfer between a master device and a slave device during
Clear “0” to the MST, TRX and BB and set “1” to the PIN. The SDA pin retains the high-level and the SCL
In order to meet setup time when restarting, take at least 4.7 μs of waiting time by software from the time of
Restart
Note:When the master is in the receiver mode, it is necessary to stop the data transmission from the slave
device before the STOP condition is generated. To stop the transmission, the master device make the
slave device receiving a negative acknowledge. Therefore, the LRB is "1" before generating the Restart
and it can not be confirmed that SCL line is not pulled-down by other devices. Please confirm the SCL
line state by reading the port.
Figure 15-14 Timing Diagram when Restarting
"0"
"0"
"0"
"1"
SDA pin
"1"
"1"
"0"
"1"
SCL pin
PIN
BB (Read)
Figure 15-13 Stop Condition Generation
MST
TRX
BB
PIN
MST
TRX
BB
PIN
Page 162
"1"
"1"
"1"
"1"
MST
TRX
BB
PIN
4.7
µ
Stop condition
s (Min)
Start condition
TMP86FH92DMG
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