DF3048X16V Renesas Electronics America, DF3048X16V Datasheet - Page 681

• Manufacturer Part Number: DF3048X16V
• Description: MCU 5V 128K,PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048X16V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 16MHz
• 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-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

20.2
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock
signal.
20.2.1
Circuit Configuration: A crystal resonator can be connected as in the example in figure 20.2.
The damping resistance Rd should be selected according to table 20.1. An AT-cut parallel-
resonance crystal should be used.
In order to improve the accuracy of the oscillation frequency, a thorough study of oscillation
matching evaluation, etc., should be carried out when deciding the circuit constants.
Table 20.1 Damping Resistance Value
Damping Resistance
Value
Rd
( )
Note: A crystal resonator between 2 MHz and 18 MHz can be used. If the chip is to be operated
For products
listed below*
H8/3048F
at less than 2 MHz, the on-chip frequency divider should be used. (A crystal resonator of
less than 2 MHz cannot be used.)
* H8/3048ZTAT, H8/3048 mask-ROM, H8/3047 mask-ROM, H8/3045 mask-ROM,
Oscillator Circuit
Connecting a Crystal Resonator
H8/3044 mask-ROM
Figure 20.2 Connection of Crystal Resonator (Example)
EXTAL
XTAL
1 k
1 k
2
Rd
2
500
1 k
f
4
C
C
4
L1
L2
200
500
f
8
Frequency f (MHz)
8
Rev. 7.00 Sep 21, 2005 page 655 of 878
200
f
0
C
10
Section 20 Clock Pulse Generator
L1
= C
10
100
L2
0
f
= 10 pF to 22 pF
13 13
REJ09B0259-0700
0
0
f
16 16
—
0
f
18