tmp89fm42k TOSHIBA Semiconductor CORPORATION, tmp89fm42k Datasheet - Page 306

• Manufacturer Part Number: tmp89fm42k
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

18.4
Functions
RA002
18.4.12
18.4.13
SCL (Bus)
SDA (Bus)
SDA0 pin
SBI0SR2<AD0>
INTSBI0 Interrupt request
SCL0 (Bus)
SDA0 (Bus)
SDA0 pin
SBI0SR2<AAS>
INTSBI0 Interrupt request
data matches the slave address setting by I2C0AR<SA> with SBI0CR1<NOACK> set at "0" and the I
mode is active (I2C0AR<ALS>="0").
tections. SBI0SR2<AAS> remains at "0" even if a "GENERAL CALL" is received or the same slave address as
the I2C0AR<SA> set value is received.
is set to "1" after receiving the first 1-word of data. SBI0SR2<AAS> is cleared to "0" by writing data to the
SBI0DBR or reading data from the SBI0DBR.
is "0" immediately after a start condition) in a slave mode.
tections. SBI0SR2<AD0> remains at "0" even if a "GENERAL CALL" is received.
In the slave mode, SBI0SR2<AAS> is set to "1" when the received data is "GENERAL CALL" or the received
Setting SBI0CR1<NOACK> to "1" disables the subsequent slave address match and GENERAL CALL de-
When a serial bus interface circuit operates in the free data format (I2C0AR<ALS>= "1"), SBI0SR2<AAS>
SBI0SR2<AD0> is set to "1" when SBI0CR1<NOACK> is "0" and GENERAL CALL (all 8-bit received data
Setting SBI0CR1<NOACK> to "1" disables the subsequent slave address match and GENERAL CALL de-
SBI0SR2<AD0> is cleared to "0" when a start or stop condition is detected on a bus.
Figure 18-14 Changes in the Slave Address Match Detection Monitor
Slave address match detection monitor
GENERAL CALL detection monitor
Figure 18-15 Changes in the GENERAL CALL Detection Monitor
Start condition
1
Start condition
SA6
1
2
SA5
2
3
SA4
GENERAL CALL
3
4
Slave address + Direction bit
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SA3
4
5
SA2
5
6
SA1
6
7
Output of an acknowledge signal
SA0
7
Writing or reading SBI0DBR
8
Output of an acknowledge signal
R/W
8
9
9
Stop condition
TMP89FM42K
2
C bus