DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 392

• 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: -

Table 12.19 PWM Output Registers and Output Pins
Note: In PWM mode 2, PWM output is not possible for TGR in which the period is set.
• Example of PWM Mode Setting Procedure
Rev.2.00 May. 28, 2009 Page 352 of 732
REJ09B0059-0200
Channel
0
1
2
Figure 12.24 shows an example of the PWM mode setting procedure.
Select counter clearing source
Select waveform output level
Select counter clock
Figure 12.24 Example of PWM Mode Setting Procedure
Set PWM mode
<PWM mode>
Start counting
PWM mode
Set TGR
Registers
TGRA_0
TGRB_0
TGRC_0
TGRD_0
TGRA_1
TGRB_1
TGRA_2
TGRB_2
[1]
[2]
[3]
[4]
[5]
[6]
[1]
[2]
[3]
[4]
[5]
[6]
Select the counter clock with bits TPSC2 to
TPSC0 in TCR. At the same time, select the
input clock edge with bits CKEG1 and CKEG0
in TCR.
Use bits CCLR2 to CCLR0 in TCR to select the
TGR to be used as the TCNT clearing source.
Use TIOR to designate the TGR as an output
compare register, and select the initial value and
output value.
Set the period in the TGR selected in [2], and set
the duty in the other TGR.
Select the PWM mode with bits MD3 to MD0 in
TMDR.
Set the CST bit in TSTR to 1 to start the count
operation.
PWM Mode 1
TIOCA0
TIOCC0
TIOCA1
TIOCA2
Output Pins
PWM Mode 2
TIOCA0
TIOCB0
TIOCC0
TIOCD0
TIOCA1
TIOCB1
TIOCA2
TIOCB2