D12321VF25V Renesas Electronics America, D12321VF25V Datasheet - Page 750
D12321VF25V
Manufacturer Part Number
D12321VF25V
Description
IC H8S/2300 MCU ROMLESS 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheets
1.HEWH8E10A.pdf
(19 pages)
2.D12312SVTE25V.pdf
(341 pages)
3.D12322RVF25V.pdf
(1304 pages)
Specifications of D12321VF25V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
86
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
128-QFP
For Use With
EDK2329 - DEV EVALUATION KIT H8S/2329
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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Section 16 A/D Converter (8 Analog Input Channel Version)
16.6
The following points should be noted when using the A/D converter.
Setting Range of Analog Power Supply and Other Pins
1. Analog input voltage range
2. Relation between AV
3. V
If conditions 1, 2, and 3 above are not met, the reliability of the device may be adversely affected.
Notes on Board Design: In board design, digital circuitry and analog circuitry should be as
mutually isolated as possible, and layout in which digital circuit signal lines and analog circuit
signal lines cross or are in close proximity should be avoided as far as possible. Failure to do so
may result in incorrect operation of the analog circuitry due to inductance, adversely affecting A/D
conversion values.
Also, digital circuitry must be isolated from the analog input signals (AN0 to AN7), analog
reference power supply (V
Also, the analog ground (AV
on the board.
Notes on Noise Countermeasures: A protection circuit connected to prevent damage due to an
abnormal voltage such as an excessive surge at the analog input pins (AN0 to AN7) and analog
reference power supply (V
16.7.
Also, the bypass capacitors connected to AV
to AN7 must be connected to AV
If a filter capacitor is connected as shown in figure 16.7, the input currents at the analog input pins
(AN0 to AN7) are averaged, and so an error may arise. Also, when A/D conversion is performed
Rev.6.00 Sep. 27, 2007 Page 718 of 1268
REJ09B0220-0600
The voltage applied to analog input pins ANn during A/D conversion should be in the range
AV
As the relationship between AV
not used, the AV
The analog reference voltage input at the V
V
pin open.
ref
ref
SS
input range
pin should be set as V
≤ ANn ≤ V
Usage Notes
CC
ref
.
and AV
CC
ref
ref
, AV
), and analog power supply (AV
) should be connected between AV
SS
ref
) should be connected at one point to a stable digital ground (V
SS
= V
SS
SS
pins must not be left open.
and V
.
CC
CC
, AV
when the A/D converter is not used. Do not leave the V
CC
SS
, V
CC
and V
SS
ref
and V
pin should be set in the range V
CC
, V
ref
and the filter capacitor connected to AN0
SS
, set AV
CC
) by the analog ground (AV
CC
and AV
SS
= V
SS
SS
. If the A/D converter is
as shown in figure
ref
≤ AV
CC
SS
. The
).
SS
ref
)
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