DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 483
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
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2437FV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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15.5.2
Even if a timer counter clock pulse is generated during the T
write takes priority and the timer counter is not incremented. Figure 15.7 shows this operation.
15.5.3
If bits CKS2 to CKS0 in TCSR are written to while the WDT is operating, errors could occur in
the incrementation. Software must stop the watchdog timer (by clearing the TME bit to 0) before
changing the values of bits CKS2 to CKS0.
15.5.4
If the mode is switched between watchdog timer and interval timer, while the WDT is operating,
errors could occur in the incrementation. Software must stop the watchdog timer (by clearing the
TME bit to 0) before switching the mode.
Conflict between Timer Counter (TCNT) Write and Increment
Changing Values of CKS2 to CKS0 Bits
Switching between Watchdog Timer Mode and Interval Timer Mode
φ
Address
Internal write signal
TCNT input clock
TCNT
Figure 15.7 Conflict between TCNT Write and Increment
N
TCNT write cycle
T 1
T 2
2
Rev.2.00 May. 28, 2009 Page 443 of 732
Counter write data
state of a TCNT write cycle, the
M
REJ09B0059-0200
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