Page 299
TMP89FM42
RA001
The AD converted value registers (ADCDRL and ADDRH) should be read before the next AD conversion is
finished. If the next AD conversion is finished in the interim between a read of ADCDRL and a read of
ADCDRH, the previous converted value is retained without overwriting the AD converted value registers
(ADCDRL and ADCDRH). In this case, the INTADC interrupt request is not generated, and the conversion
result is lost. (See Figure 20-3.)
To stop AD conversion, write "00" (AD operation disable) to ADCCR1<AMD>. As "00" is written to
ADCCR1<AMD>, AD conversion stops immediately. In this case, the converted value is not stored in the AD
converted value register. As AD conversion starts, ADCCR2<ADBF> is set to "1". It is cleared to "0" if "00" is
written to AMD.
Figure 20-3 Repeat Mode
20.3.3 AD operation disable and forced stop of AD operation
If you want to force the AD converter to stop when AD conversion is ongoing in single mode or if you want
to stop the AD converter when AD conversion is ongoing in repeat mode, set ADCCR1<AMD> to "00".
If ADCCR1<AMD> is set to "00", registers ADCCR2<EOCF>, ADCCR2<ADBF>, ADCDRL, and
ADCDRH are initialized to "0".
Status of ADCDRL
and ADCDRH
A read of the
conversion result
will clear EOCF.
The INTADC interrupt request is
not generated in the interim
between a read of ADCDRL
and a read of ADCDRH.
Read of
conversion
result
Read of
conversion
result
ADCCR2<EOCF>
INTADC interrupt
Conversion
operation
ADCCR1<ADRS>
AD conversion start
ADCCR1<AMD>
“11”
“00”
AD conversion is
suspended.
The conversion result
is not stored.
Read of ADCDRH
Read of ADCDRL
Read of
conversion
result
Read of
conversion
result
Read of
conversion
result
Read of
conversion
result
Indeterminate
Result of the 1st conversion
Result of the
2nd conversion
Result of the 3rd
conversion
Result of the 4th
conversion
Result of the 4th
conversion
Result of the 3rd
conversion
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: ......