DF2266TF13V Renesas Electronics America, DF2266TF13V Datasheet - Page 343
DF2266TF13V
Manufacturer Part Number
DF2266TF13V
Description
IC H8S/2266 MCU FLASH 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Datasheet
1.DF2266TF20V.pdf
(712 pages)
Specifications of DF2266TF13V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
13MHz
Connectivity
I²C, SCI, SmartCard
Peripherals
LCD, POR, PWM, WDT
Number Of I /o
67
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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12.2
The WDT has the following registers. To prevent accidental overwriting, TCSR and TCNT have
to be written to by a different method to normal registers. For details, refer to section 12.5.1, Notes
on Register Access.
• Timer counter (TCNT)
• Timer control/status register (TCSR)
• Reset control/status register (RSTCSR)
12.2.1
TCNT is an 8-bit readable/writable up-counter. TCNT is initialized to H'00 when the TME bit in
TCSR is cleared to 0.
To initialize TCNT to H’00 while the timer is operating, write H’00 to TCNT directly. See 12.5.7,
Notes on Initializing TCNT by Using the TME Bit.
12.2.2
TCSR functions include selecting the clock source to be input to TCNT and the timer mode.
• TCSR_0
Bit
7
Timer Control/Status Register (TCSR)
Bit Name
OVF
Register Descriptions
Timer Counter (TCNT)
Initial
Value
0
R/W
R/(W) *
1
Description
Overflow Flag
Indicates that TCNT has overflowed. Only a 0 can be
written to this bit, to clear the flag.
[Setting condition]
When TCNT overflows (changes from H'FF to H'00)
When internal reset request generation is selected in
watchdog timer mode, OVF is cleared automatically by
the internal reset.
[Clearing condition]
Cleared by reading TCSR *
to OVF
Rev. 5.00 Sep. 01, 2009 Page 291 of 656
Section 12 Watchdog Timer (WDT)
2
when OVF = 1, then writing 0
REJ09B0071-0500
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