DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 584

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 15 A/D Converter
15.5
The A/D converter generates an interrupt (ADI) at the end of A/D conversion. The ADI interrupt
request can be enabled or disabled by the ADIE bit in ADCSR.
15.6
When using the A/D converter, note the following points:
1. Analog Input Voltage Range: During A/D conversion, the voltages input to the analog input
2. Relationships of AV
3. V
Failure to observe points 1, 2, and 3 above may degrade chip reliability.
4. Note on Board Design: In board layout, separate the digital circuits from the analog circuits as
Rev. 3.00 Sep 27, 2006 page 556 of 872
REJ09B0325-0300
pins should be in the range AV
follows: AV
used.
V
much as possible. Particularly avoid layouts in which the signal lines of digital circuits cross or
closely approach the signal lines of analog circuits. Induction and other effects may cause the
analog circuits to operate incorrectly, or may adversely affect the accuracy of A/D conversion.
The analog input signals (AN
voltage (AV
analog ground (AV
board.
REF
REF
Programming Range: The reference voltage input at the V
Interrupts
Usage Notes
AV
CC
.
SS
CC
) must be separated from digital circuits by the analog ground (AV
= V
SS
SS
. AV
CC
) should be connected to a stable digital ground (V
and AV
CC
and AV
0
SS
to AN
SS
to V
SS
AN
must not be left open, even if the A/D converter is not
7
CC
), analog reference voltage (V
n
and V
V
REF
SS
.
: AV
CC
, AV
SS
, V
CC
REF
, and V
pin should be in the range
REF
), and analog supply
SS
SS
) at one point on the
should be related as
SS
). The