DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 511
DF71251AD50FPV
Manufacturer Part Number
DF71251AD50FPV
Description
MCU RISC FLASH 32K 8K 64LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH Tinyr
Datasheet
1.DF71243N50FPV.pdf
(794 pages)
Specifications of DF71251AD50FPV
Core Processor
SH-2
Core Size
32-Bit
Speed
50MHz
Connectivity
SCI
Peripherals
POR, PWM, WDT
Number Of I /o
37
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF71251AD50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 511 of 794
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13.4
The A/D converter operates by successive approximation with 10-bit resolution. It has two
operating modes; single mode and scan mode. There are two kinds of scan mode: continuous
mode and single-cycle mode. When changing the operating mode or analog input channel, in order
to prevent incorrect operation, first clear the ADST bit to 0 in ADCR.
13.4.1
In single mode, A/D conversion is to be performed only once on the specified single channel. The
operations are as follows.
1. A/D conversion is started when the ADST bit in ADCR is set to 1, according to software,
2. When A/D conversion is completed, the result is transferred to the A/D data register
3. On completion of conversion, the ADF bit in ADCSR is set to 1. If the ADIE bit is set to 1 at
4. The ADST bit remains set to 1 during A/D conversion. When A/D converion ends, the ADST
13.4.2
In continuous scan mode, A/D conversion is to be performed sequentially on the specified
channels.
1. When the ADST bit in ADCR is set to 1 by software, MTU2, or external trigger input, A/D
2. When A/D conversion for each channel is completed, the result is sequentially transferred to
3. When conversion of all the selected channels is completed, the ADF bit in ADCSR is set to 1.
4. Steps 2 to 3 are repeated as long as the ADST bit remains set to 1. When the ADST bit is
MTU2, or external trigger input.
corresponding to the channel.
this time, an ADI interrupt request is generated.
bit is automatically cleared to 0 and the A/D converter enters the idle state.
When the ADST bit is cleared to 0 during A/D conversion, A/D conversion stops and the A/D
converter enters the idle state.
conversion starts on the channel with the lowest number in the group (AN0, AN1, ..., AN3).
the A/D data register corresponding to each channel.
If the ADIE bit is set to 1 at this time, an ADI interrupt is requested after A/D conversion ends.
Conversion of the first channel in the group starts again.
cleared to 0, A/D conversion stops and the A/D converter enters the idle state.
Operation
Single Mode
Continuous Scan Mode
Rev. 5.00 Mar. 06, 2009 Page 491 of 770
REJ09B0243-0500
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