DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 270

• 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: -

8.4
The upper four bits of PWDR specify the duty cycle of the basic pulse as 0/16 to 15/16 with a
resolution of 1/16. Table 8.4 shows the duty cycles of the basic pulse.
Table 8.4
Rev.2.00 May. 28, 2009 Page 230 of 732
REJ09B0059-0200
Upper 4 Bits
B ' 0 0 0 0
B ' 0 0 0 1
B ' 0 0 1 0
B ' 0 0 1 1
B ' 0 1 0 0
B ' 0 1 0 1
B ' 0 1 1 0
B ' 0 1 1 1
B ' 1 0 0 0
B ' 1 0 0 1
B ' 1 0 1 0
B ' 1 0 1 1
B ' 1 1 0 0
B ' 1 1 0 1
B ' 1 1 1 0
B ' 1 1 1 1
Operation
Duty Cycle of Basic Pulse
0 1 2 3 4 5 6 7 8 9 A B C D E F 0
Basic Pulse Waveform (Internal)