M30800SAGP-BL#U5 Renesas Electronics America, M30800SAGP-BL#U5 Datasheet - Page 257

• Manufacturer Part Number: M30800SAGP-BL#U5
• Description: IC M32C/80 MCU ROMLESS 100LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M32C/80r

Specifications of M30800SAGP-BL#U5

• Core Processor: M16C/80
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 45
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• For Use With: R0K330879S001BE - KIT DEV RSK M32C/87R0K330879S000BE - KIT DEV RSK M32C/87
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

M
R
R
18. D/A Converter
e
E
3
. v
J
2
Table 18.1 D/A Converter Specifications
Table 18.2 Pin Settings
0
C
The D/A converter consists of two separate 8-bit R-2R ladder D/A converters.
Digital code is converted to an analog voltage when a value is written to the corresponding DAi registers
(i=0,1). The DAiE bit in the DACON register determines whether the D/A conversion result output is pro-
vided or not. Set the DAiE bit to "1" (output enabled) to disable a pull-up of a corresponding port.
Output analog voltage (
Table 18.1 lists specifications of the D/A converter. Table 18.2 lists the DA0 and DA1 pin settings. Figure
18.1 shows a block diagram of the D/A converter. Figure 18.2 shows the D/A control register. Figure 18.3
shows a D/A converter equivalent circuit.
When the D/A converter is not used, set the DAi register to "00
D/A Conversion Method
Resolution
Analog Output Pin
P9
P9
NOTE:
1
9
0 .
8 /
B
1. Set the PD9 and PS3 registers immediately after the PRC2 bit in the PRCR register is set to "1" (write
Port
3
4
0
0
0
2
enable). Do not generate an interrupt or a DMA transfer between the instruction to set the PRC2 bit to "1"
and the instruction to set the PD9 and PS3 registers.
7
G
N
1
Item
o
o r
0 -
. v
V
V
u
1
REF
p
0
0
=
, 1
0
DA
DA
2
: reference voltage (not related to VCUT bit setting in the AD0CON1 register)
V
0
1
0
REF
output
output
0
256
Function
5
Page 236
x
n
V
) is calculated from value
(
n
R-2R
8 bits
2 channels
= 0 to 255)
f o
PD9 Register
PD9_3=0
PD9_4=0
3
3
0
(1)
PS3 Register
PS3_3=0
PS3_4=0
n
(
Setting
n
=decimal) set in the DAi register.
Specification
16
(1)
" and the DAiE bit to "0" (output disabled).
PSL3 Register
PSL3_3=1
PSL3_4=1
18. D/A Converter