DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 462

• 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: -

14.3.4
TWCR2 controls enabling or disabling interrupt request signals, status flag indication, and duty
measurement operation.
Rev.2.00 May. 28, 2009 Page 422 of 732
REJ09B0059-0200
Bit
7
6
5
4
3 to
1
Bit Name
ENDIE
OVIE
ENDF
OVF
⎯
Duty Measurement Control Register 2 (TWCR2)
Initial Value
0
0
0
0
All 0
R/W
R/W
R/W
R/(W)* Duty Measurement End
R/(W)* Overflow Flag
R/W
Description
Duty Measurement End Interrupt Enable
When the ENDF flag in TWCR2 is set to 1, this bit
enables or disables an interrupt request by the ENDF
flag.
0: Disables an interrupt request (TWENDI) by ENDF
1: Enables an interrupt request (TWENDI) by ENDF
Overflow Interrupt Enable
When the OVF flag in TWCR2 is set to 1, this bit
enables or disables an interrupt request by the OVF
flag.
0: Disables an interrupt request (TWOVI) by OVF
1: Enables an interrupt request (TWOVI) by OVF
A status flag indicating that duty measurement has
ended.
[Setting condition]
When duty measurement ends
[Clearing condition]
When 0 is written to ENDF after reading ENDF = 1
A flag indicating that a TWCNT overflow has occurred.
[Setting condition]
When TWCNT overflows from H'FF to H'00
[Clearing condition]
When 0 is written to OVF after reading OVF = 1
Reserved
The initial value should not be changed.