M306N4FGTFP Renesas Electronics America, M306N4FGTFP Datasheet - Page 234

• Manufacturer Part Number: M306N4FGTFP
• Description: IC M16C MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/6Nr

Specifications of M306N4FGTFP

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 26x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

M16C/6N Group (M16C/6N4)
Rev.2.40
REJ09B0009-0240
17. D/A Converter
This is an 8-bit, R-2R type D/A converter. These are two independent D/A converters.
D/A conversion is performed by writing to the DAi register (i = 0, 1). To output the result of conversion, set the
DAiE bit in the DACON register to 1 (output enabled). Before D/A conversion can be used, the corresponding
port direction bit is set to 0 (input mode). Setting the DAiE bit to 1 removes a pull-up from the corresponding
port.
Output analog voltage (V) is determined by a set value (n : decimal) in the DAi register.
Table 17.1 lists the D/A converter Performance. Figure 17.1 shows the D/A Converter Block Diagram.
Figure 17.2 shows the D/A converter-related registers. Figure 17.3 shows the D/A Converter Equivalent
Circuit.
Table 17.1 D/A Converter Performance
Figure 17.1 D/A Converter Block Diagram
D/A conversion method
Resolution
Analog output pin
Apr 14, 2006
Item
page 210 of 376
V = VREF ✕ n/ 256 (n = 0 to 255)
Data bus low-order
R-2R method
8 bits
2 channels (DA0 and DA1)
R-2R resistor ladder
R-2R resistor ladder
DA1 register
DA0 register
VREF : reference voltage
DA0E bit
DA1E bit
Performance
0
1
0
1
DA0
DA1
17. D/A Converter