DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 646

• 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

Section 18 Clock Pulse Generator
External Clock: The external clock signal should have the same frequency as the system clock
( ).
Table 18.4 and figure 18.6 show the input conditions for the external clock.
Table 18.4 External Clock Input Conditions
Item
External clock input
low pulse width
External clock input
high pulse width
External clock rise time t
External clock fall time
Clock low pulse width
level
Clock high pulse width
level
Note:
Rev. 4.00 Feb 15, 2006 page 620 of 900
REJ09B0291-0400
* ZTAT, mask ROM, and ROMless versions only.
EXTAL
t
EXr
Symbol
t
t
t
t
t
EXL
EXH
EXr
EXf
CL
CH
Figure 18.6 External Clock Input Timing
Min
40
40
—
—
0.4
80
0.4
80
V
CC
to 5.5 V
t
EXH
= 2.7 V *
Max
—
—
10
10
0.6
—
0.6
—
Min
20
20
—
—
0.4
80
0.4
80
V
CC
± 10%
= 5.0 V
t
EXf
Max
—
—
5
5
0.6
—
0.6
—
t
EXL
Unit
ns
ns
ns
ns
t
ns
t
ns
cyc
cyc
Test
Conditions
Figure 18.6
< 5 MHz
< 5 MHz
5 MHz
5 MHz
V
CC
0.5
Figure 20.4