D12350F20IV Renesas Electronics America, D12350F20IV Datasheet - Page 715

• Manufacturer Part Number: D12350F20IV
• Description: IC H8S/2350 MCU 4.5/5.5V 0+K I-T
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12350F20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Bits 2 to 0—System Clock Select 2 to 0 (SCK2 to SCK0): These bits select the clock for the bus
master.
19.3
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock.
19.3.1
Circuit Configuration
A crystal resonator can be connected as shown in the example in figure 19.2. Select the damping
resistance R
Table 19.2 Damping Resistance Value
Bit 2
SCK2
0
1
Frequency (MHz)
R
d
( )
Bit 1
SCK1
0
1
0
1
Oscillator
Connecting a Crystal Resonator
d
according to table 19.2. An AT-cut parallel-resonance crystal should be used.
Figure 19.2 Connection of Crystal Resonator (Example)
Bit 0
SCK0
0
1
0
1
0
1
—
EXTAL
XTAL
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
—
2
1k
R
d
4
500
C
C
L1
L2
8
200
Rev. 3.00 Sep 15, 2006 page 679 of 988
C
L1
= C
Section 19 Clock Pulse Generator
12
0
L2
= 10 to 22pF
16
0
REJ09B0330-0300
(Initial value)
20
0