upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 188
![no-image](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__sml.jpg)
upd78f0103hmca1-5a4-a
Manufacturer Part Number
upd78f0103hmca1-5a4-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103HMCA1-5A4-A.pdf
(438 pages)
- Current page: 188 of 438
- Download datasheet (3Mb)
10.4 A/D Converter Operations
10.4.1 Basic operations of A/D converter
188
<1> Select one channel for A/D conversion using the analog input channel specification register (ADS).
<2> Set ADCE to 1 and wait for 14
<3> Set ADCS to 1 and start the conversion operation.
<4> The voltage input to the selected analog input channel is sampled by the sample & hold circuit.
<5> When sampling has been done for a certain time, the sample & hold circuit is placed in the hold state and the
<6> Bit 9 of the successive approximation register (SAR) is set. The series resistor string voltage tap is set to
<7> The voltage difference between the series resistor string voltage tap and analog input is compared by the
<8> Next, bit 8 of SAR is automatically set to 1, and the operation proceeds to the next comparison. The series
<9> Comparison is continued in this way up to bit 0 of SAR.
<10> Upon completion of the comparison of 10 bits, an effective digital result value remains in SAR, and the result
<11> Repeat steps <4> to <10>, until ADCS is cleared to 0.
(<4> to <10> are operations performed by hardware.)
input analog voltage is held until the A/D conversion operation has ended.
(1/2) AV
voltage comparator. If the analog input is greater than (1/2) AV
analog input is smaller than (1/2) AV
resistor string voltage tap is selected according to the preset value of bit 9, as described below.
• Bit 9 = 1: (3/4) AV
• Bit 9 = 0: (1/4) AV
The voltage tap and analog input voltage are compared and bit 8 of SAR is manipulated as follows.
• Analog input voltage ≥ Voltage tap: Bit 8 = 1
• Analog input voltage < Voltage tap: Bit 8 = 0
value is transferred to the A/D conversion result register (ADCR) and then latched.
At the same time, the A/D conversion end interrupt request (INTAD) can also be generated.
To stop the A/D converter, clear ADCS to 0.
To restart A/D conversion from the status of ADCE = 1, start from <3>. To restart A/D conversion from the
status of ADCE = 0, however, start from <2>.
REF
by the tap selector.
REF
REF
µ
s or longer.
CHAPTER 10 A/D CONVERTER
REF
User’s Manual U16846EJ3V0UD
, the MSB is reset to 0.
REF
, the MSB of SAR remains set to 1. If the
Related parts for upd78f0103hmca1-5a4-a
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![HD6417709S](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![M30291FCTHP](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![R0K505210S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
![R0K505630S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
![R0K50563NS000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.
![R0K507269S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit
Manufacturer:
Renesas Electronics Corporation.
![Y-PG-FP5-EE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
FLASH PROGRAMMER FOR RENESAS MICROCONTROLLERS
Manufacturer:
Renesas Electronics Corporation.
![HA1127](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![HA17747](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3799CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3719D](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3778CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3777CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3798CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3728DZ](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet: