DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 480
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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15.3.2
When the WDT is used as an interval timer, an interval timer interrupt (WOVI) is generated each
time TCNT overflows, as shown in figure 15.3. Therefore, an interrupt can be generated at
intervals.
When TCNT overflows in interval timer mode, the OVF bit in TCSR is set to 1 and at the same
time an interval timer interrupt (WOVI) is requested. The timing is shown in figure 15.4.
Rev.2.00 May. 28, 2009 Page 440 of 732
REJ09B0059-0200
[Legend]
WOVI : Interval timer interrupt request occurrence
H'FF
H'00
Interval Timer Mode
TCNT value
WT/
TME = 1
φ
TCNT
Overflow signal
(internal signal)
OVF
= 0
Figure 15.3 Interval Timer Mode Operation
Overflow
WOVI
Figure 15.4 OVF Flag Set Timing
H'FF
Overflow
WOVI
Overflow
WOVI
H'00
Overflow
WOVI
Time
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