HD6413007F20 Renesas Electronics America, HD6413007F20 Datasheet - Page 553

• Manufacturer Part Number: HD6413007F20
• Description: IC H8 MCU ROMLESS 5V 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD6413007F20

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 35
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

15.4
The A/D converter operates by successive approximations with 10-bit resolution. It has two
operating modes: single mode and scan mode.
15.4.1
Single mode should be selected when only one A/D conversion on one channel is required. A/D
conversion starts when the ADST bit is set to 1 by software, or by external trigger input. The
ADST bit remains set to 1 during A/D conversion and is automatically cleared to 0 when
conversion ends.
When conversion ends the ADF bit is set to 1. If the ADIE bit is also set to 1, an ADI interrupt is
requested at this time. To clear the ADF flag to 0, first read ADCSR, then write 0 in ADF.
When the mode or analog input channel must be switched during analog conversion, to prevent
incorrect operation, first clear the ADST bit to 0 in ADCSR to halt A/D conversion. After making
the necessary changes, set the ADST bit to 1 to start A/D conversion again. The ADST bit can be
set at the same time as the mode or channel is changed.
Typical operations when channel 1 (AN
Figure 15.3 shows a timing diagram for this example.
1. Single mode is selected (SCAN = 0), input channel AN
CH0 = 1), the A/D interrupt is enabled (ADIE = 1), and A/D conversion is started
(ADST = 1).
2. When A/D conversion is completed, the result is transferred into ADDRB. At the same time
3. Since ADF = 1 and ADIE = 1, an ADI interrupt is requested.
4. The A/D interrupt handling routine starts.
5. The routine reads ADCSR, then writes 0 in the ADF flag.
6. The routine reads and processes the conversion result (ADDRB).
7. Execution of the A/D interrupt handling routine ends. After that, if the ADST bit is set to 1,
the ADF flag is set to 1, the ADST bit is cleared to 0, and the A/D converter becomes idle.
A/D conversion starts again and steps 2 to 7 are repeated.
Operation
Single Mode (SCAN = 0)
1
) is selected in single mode are described next.
Rev.5.00 Sep. 12, 2007 Page 523 of 764
1
is selected (CH2 = CH1 = 0,
15. A/D Converter
REJ09B0396-0500