Datasheet

M16C/6S Group IT800AFE (Analog Front End)
R01DS0201EJ0502 Rev.5.02 page 187 of 203
Dec 25, 2012
About DAC (Digital to Analog Converter)
DAC of built-in in M16C/6S is current output type 10 bit DAC. The standard level of output current can
be set up by the external resistance linked to a built-in standard power supply. A DAC circuit and a load
circuit are shown in Figure 1.23.2. The typical characteristic is shown in Table 1.23.1.
Figure 1.23.2 DAC (Digital to Analog Converter)
10 bit DAC
D9-D0
DATA
10
Rext
LSI internal connection
External pin (pin number) I
FULL(mA)=2131/Rext(
At Rext=2.1k
=Iout+Ioutc
Iout
Ioutc
Vref +
-
Cout
33pF
Rout
2.1k(1%)
Rext
2.1k(1%)
Routc
2.1k(1%)
Coutc
33pF
8
7
6
Matrix
Current
Cell
Line
Driver
Amp
)
, I
FULL=1mA
Table 1.23.1 DAC Electrical Characteristics (Vdd=3.3±0.3V, Ta = -20 to 85°C/-40 to 85°C/-40 to 105°C
unless otherwise specified)
Rext=2.1k
Rext=2.1k
Rext=2.1k
Rext=2.1k
Rout/Routc=2.1k
Vref
Iref
Rext
Rout/Routc
IFULL
Voutmax
Standard voltage
Maximum output voltage
Standard current
External standard register
DAC output register
Full-scale current
ConditionSymbol
Electrical Characteristics
MaxTypMin
Unit
Parameter
0.3
0.14
2.1
2.0
1.1
Vdd-1
0.9 1
V
V
mA
mA
k
k