M30800SFP-BL#U5 Renesas Electronics America, M30800SFP-BL#U5 Datasheet - Page 225

• Manufacturer Part Number: M30800SFP-BL#U5
• Description: MCU 3/5V 0K,PB-FREE 100-QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/80r

Specifications of M30800SFP-BL#U5

• Core Processor: M16C/80
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 45
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

M
R
R
e
E
1
v
J
6
1 .
0
C
A/D Converter
9
0 .
8 /
B
(1) Write to each bit (except bit 6) of A/D control register 0, to each bit of A/D control register 1, and to bit
(2) When changing A/D operation mode, select analog input pin again.
(3) Using one-shot mode or single sweep mode
(4) Using repeat mode, repeat sweep mode 0 or repeat sweep mode 1
(5) When f(X
(6) If A/D conversion is stopped by program while in progress of A/D conversion, the conversion result of
(7) Output impedance of sensor at A/D conversion (Reference value)
0
0
0
1
A
8
G
Read the correspondence A/D register after confirming A/D conversion is finished. (It is known by A/
D conversion interrupt request bit.)
Use the undivided main clock as the internal CPU clock.
0 of A/D control register 2 when A/D conversion is stopped (before a trigger occurs).
elapse of 1 s or longer.
A/D converter becomes indeterminate. The contents of A/D registers irrelevant to A/D conversion
may become indeterminate. If A/D conversion is stopped by program while in progress of A/D conver-
sion, ignore the values of all A/D registers.
be completed within a specified period of time T. Let output impedance of sensor equivalent circuit be
R0, microcomputer’s internal resistance be R, precision (error) of the A/D converter be X, and the A/
D converter’s resolution be Y (Y is 1024 in the 10-bit mode, and 256 in the 8-bit mode).
To carry out A/D conversion properly, charging the internal capacitor C shown in Figure 27.1 has to
In particular, when the Vref connection bit is changed from “0” to “1”, start A/D conversion after an
u
7
o r
. g
0 -
Vc is generally V
And when t = T,
Hence, R0 = –
u
1
0
p
0
, 2
0
2
0
IN
0
5
) is faster than 10 MHz, make the frequency 10 MHz or less by dividing.
Page 212
C
C • ln
= V
V
e
–
C
f o
–
=V
IN
T
C (R0 +R)
3
2
C (R0 + R)
{1 – e
IN
9
X
Y
T
–
T
– R
X
Y
–
=
=ln
V
C (R0 + R)
IN
=V
X
Y
t
Y
X
IN
(1 –
}
Y
X
)
27. Usage Precaution