DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 530
DF2238RTF6
Manufacturer Part Number
DF2238RTF6
Description
MCU 2.2/3V 256K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Datasheet
1.DF2238RFA6V.pdf
(1048 pages)
Specifications of DF2238RTF6
Core Processor
H8S/2000
Core Size
16-Bit
Speed
6MHz
Connectivity
I²C, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
72
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 3.6 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
HD64F2238RTF6
HD64F2238RTF6
HD64F2238RTF6
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2238RTF6V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 13 Watchdog Timer (WDT)
13.3.1
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 13.6.7,
Notes on Initializing TCNT by Using the TME Bit.
13.3.2
TCSR functions include selecting the clock source to be input to TCNT and the timer mode.
• TCSR_0
Rev. 6.00 Mar. 18, 2010 Page 468 of 982
REJ09B0054-0600
Bit
7
6
5
4, 3
Bit Name
OVF
WT/IT
TME
⎯
Timer Control/Status Register (TCSR)
Timer Counter (TCNT)
Initial
Value
0
0
0
All 1
R/W
R/(W) *
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*
writing 0 to OVF
Timer Mode Select
Selects whether the WDT is used as a watchdog
timer or interval timer.
0: Interval timer mode (an interval timer interrupt
1: Watchdog timer mode (internal reset selectable)
Timer Enable
When this bit is set to 1, TCNT starts counting.
When this bit is cleared, TCNT stops counting and
is initialized to H'00.
Reserved
These bits are always read as 1 and cannot be
modified.
(WOVI) is requested to CPU)
2
when OVF = 1, then
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