Page 281
TMP89FM42
RA001
2. Clear SBI0CR1<ACK> to "0" and set SBI0CR1<BC> to "001".
3. To set SBI0CR2<PIN> to "1", write a dummy data (0x00) to SBI0DBR.
Transfer 1-bit data by setting SBI0CR1<PIN> to "1".
In this case, since the master device is a receiver, the SDA line on a bus keeps the high level. The
transmitter receives the high-level signal as a negative acknowledge signal. The receiver indicates to
the transmitter that data transfer is complete.
After 1-bit data is received and an interrupt request has occurred, generate the stop condition to ter-
minate data transfer.
Figure 18-20 Termination of Data Transfer in the Master Receiver Mode
18.5.3.2 When SBI0SR2<MST> is "0" (Slave mode)
In the slave mode, a serial bus interface circuit operates either in the normal slave mode or in the slave
mode after losing arbitration.
In the slave mode, the conditions of generating the serial bus interface interrupt request (INTSBI0) are
follows:
• At the end of the acknowledge signal when the received slave address matches the value set by the
I2C0AR<SA> with SBI0CR1<NOACK> set at "0"
• At the end of the acknowledge signal when a "GENERAL CALL" is received with
SBI0CR1<NOACK> set at "0"
• At the end of transferring or receiving after matching of slave address or receiving of "GENERAL
CALL"
The serial bus interface circuit changes to the slave mode if arbitration is lost in the master mode. And
an interrupt request occurs when the word data transfer terminates after losing arbitration. The generation
of the interrupt request and the behavior of SBI0CR2<PIN> after losing arbitration are shown in Table 18-
4.
Negative
acknowledge signal
to the transmitter
2
3
4
5
6
7
8
1
9
D7
D5
D6
D4
D3
D2
D1
D0
SCL0 pin
SDA0 pin
SBI0CR<PIN>
INTSBI0 Interrupt
request
After reading the reveived
data, set SBI0CR1<BC> to
"001" and write dummy data
(0x00)
After reading the received data, clear
SBI0CR1<ACK> to "0" and writing the
dummy data (0x00)
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......