DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 643

• Manufacturer Part Number: DF2345TE20
• Description: MCU 5V 128K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2345TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 71
• 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2345TE20; HD64F2345TE20

Bits 2 to 0—System Clock Select 2 to 0 (SCK2 to SCK0): These bits select the clock for the bus
master.
18.3
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock.
18.3.1
Circuit Configuration: A crystal resonator can be connected as shown in the example in figure
18.2. Select the damping resistance R
crystal should be used.
Table 18.2 Damping Resistance Value
Bit 2
SCK2
0
1
Frequency (MHz)
R
d
( )
Connecting a Crystal Resonator
Bit 1
SCK1
0
1
0
1
Oscillator
Figure 18.2 Connection of Crystal Resonator (Example)
Bit 0
SCK0
0
1
0
1
0
1
—
EXTAL
XTAL
2
1k
Description
Bus master is in high-speed mode
Medium-speed clock is /2
Medium-speed clock is /4
Medium-speed clock is /8
Medium-speed clock is /16
Medium-speed clock is /32
—
R
d
4
500
d
according to table 18.2. An AT-cut parallel-resonance
C
C
L1
L2
8
200
10
100
Rev. 4.00 Feb 15, 2006 page 617 of 900
C
L1
= C
Section 18 Clock Pulse Generator
L2
12
0
= 10 to 22pF
16
0
REJ09B0291-0400
(Initial value)
20
0