DF2268FA13V Renesas Electronics America, DF2268FA13V Datasheet - Page 345

• Manufacturer Part Number: DF2268FA13V
• Description: IC H8S/2268 MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2268FA13V

• 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: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

• TCSR_1
Bit
7
6
5
4
3
Bit Name
OVF
WT/IT
TME
PSS
RST/NMI
Initial
Value
0
0
0
0
0
R/W
R/(W) *
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 conditions]
Cleared by reading TCSR *
to OVF
Timer Mode Select
Selects whether the WDT is used as a watchdog timer or
interval timer.
0: Interval timer mode
1: Watchdog timer mode
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.
Prescaler Select
Selects the clock source input to TCNT of WDT_1
0: TCNT counts divided clock of φ-base prescaler (PSM).
1: TCNT counts divided clock of φ
Reset or NMI
Selects either a power-on reset or the NMI interrupt
request when TCNT overflows in watchdog timer mode.
0: NMI interrupt is requested
1: Reset is requested
(interval timer interrupt (WOVI) is requested to CPU)
(internal reset or NMI interrupt is requested to CPU)
(PSS)
Rev. 5.00 Sep. 01, 2009 Page 293 of 656
Section 12 Watchdog Timer (WDT)
2
when OVF = 1, then writing 0
SUB
-base prescaler
REJ09B0071-0500