DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 682
DF2437FV
Manufacturer Part Number
DF2437FV
Description
IC H8S/2437 MCU FLASH 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Specifications of DF2437FV
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
85
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
128-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2437FV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Table 21.3 External Clock Input Conditions
When a specified clock signal is input to the EXTAL pin, internal clock signal output is
determined after the external clock output stabilization delay time (t
signal output is not determined during the t
in the reset state. Table 21.4 shows the output stabilization delay time for the external clock.
Figure 21.6 shows the timing of the output stabilization delay time for the external clock.
Rev.2.00 May. 28, 2009 Page 642 of 732
REJ09B0059-0200
Item
External clock input pulse
width low level
External clock input pulse
width high level
External clock rising time
External clock falling time t
Clock pulse width low
level
Clock pulse width high
level
EXTAL
t
EXr
Figure 21.5 External Clock Input Timing
Symbol
t
t
t
t
t
EXL
EXH
EXr
EXf
CL
CH
VCC = 3.0 to 3.6 V
Min.
15
15
⎯
⎯
0.4
0.4
t
EXH
DEXT
cycle, a reset signal should be set to low to hold it
Max.
⎯
⎯
5
5
0.6
0.6
t
EXf
t
EXL
Unit
ns
ns
ns
ns
t
t
cyc
cyc
DEXT
) has passed. As the clock
V
CC
× 0.5
Test Conditions
Figure 21.5
Figure 24.3
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