HD64F3067RF20 Renesas Electronics America, HD64F3067RF20 Datasheet - Page 611

• Manufacturer Part Number: HD64F3067RF20
• Description: IC H8 MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3067RF20

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• 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): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Package: 100PQFP
• Family Name: H8
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 16|32 Bit
• Number Of Programmable I/os: 70
• Interface Type: SCI
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Number Of Timers: 7
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

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. The ADI interrupt request can be
designated as a DMAC activation source. In this case, an interrupt request is not sent to the CPU.
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
4. Note on Board Design: In board layout, separate the digital circuits from the analog circuits as
5. Note on Noise: To prevent damage from surges and other abnormal voltages at the analog
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.
input pins (AN
like the one in figure 15.7 between AV
and V
capacitors like the ones in figure 15.7 are connected, the voltage values input to the analog
input pins (AN
A/D conversion is frequently performed in scan mode so that the current that charges and
discharges the capacitor in the sample-and-hold circuit of the A/D converter becomes greater
than that input to the analog input pins via input impedance Rin. The circuit constants should
therefore be selected carefully.
REF
REF
Programming Range: The reference voltage input at the V
REF
Interrupts
Usage Notes
AV
and the filter capacitors connected to AN
CC
.
SS
CC
) must be separated from digital circuits by the analog ground (AV
= V
0
0
to AN
to AN
SS
SS
. AV
CC
) should be connected to a stable digital ground (V
7
7
and AV
) and analog reference voltage pin (V
) will be smoothed, which may give rise to error. Error can also occur if
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
CC
and V
and AV
V
REF
SS
.
: AV
SS
0
. The bypass capacitors connected to AV
to AN
CC
, AV
Rev. 4.00 Jan 26, 2006 page 587 of 938
7
SS
must be connected to AV
, V
REF
CC
), connect a protection circuit
REF
, and V
pin should be in the range
REF
Section 15 A/D Converter
), and analog supply
SS
SS
) at one point on the
should be related as
REJ09B0276-0400
SS
). The
SS
. If filter
CC