DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 271

• 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: -

The lower four bits in PWDR specify the position of pulses added to the 16 basic pulses. An
additional pulse adds a high period (when OS = 0) with a width equal to the resolution before the
rising edge of a basic pulse. When the upper four bits in PWDR are 0000, there is no rising edge
of the basic pulse, but the timing for adding pulses is the same. Table 8.5 shows the positions of
the additional pulses added to the basic pulses, and figure 8.2 shows an example of additional
pulse timing.
Table 8.5
Lower 4 Bits 0
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Figure 8.2 Example of Additional Pulse Timing (When Upper 4 Bits in PWDR = 1000)
Position of Pulses Added to Basic Pulses
No additional pulse
With additional pulse
1
Yes
Yes
Yes
Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes Yes Yes Yes Yes
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
2
3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
4
5
Yes
Yes
Yes
Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Resolution width
Additional pulse
6
Basic Pulse No.
7
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
8
Rev.2.00 May. 28, 2009 Page 231 of 732
9
Yes
Yes
Yes
Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes Yes Yes Yes Yes
Yes Yes Yes Yes Yes Yes Yes
10
11
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
12
REJ09B0059-0200
13
Yes
Yes
Yes
Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
14
15
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes