DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 410

• Manufacturer Part Number: DF2357F20
• Description: IC H8S MCU FLASH 5V 128K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2357F20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Example of Buffer Operation Setting Procedure: Figure 10-18 shows an example of the buffer operation setting
procedure.
Examples of Buffer Operation
Rev.6.00 Oct.28.2004 page 380 of 1016
REJ09B0138-0600H
When TGR is an output compare register
Figure 10-19 shows an operation example in which PWM mode 1 has been designated for channel 0, and buffer
operation has been designated for TGRA and TGRC. The settings used in this example are TCNT clearing by compare
match B, 1 output at compare match A, and 0 output at compare match B.
As buffer operation has been set, when compare match A occurs the output changes and the value in buffer register
TGRC is simultaneously transferred to timer general register TGRA. This operation is repeated each time compare
match A occurs.
For details of PWM modes, see section 10.4.6, PWM Modes.
TGR0B
TGR0A
H'0000
TGR0C
TGR0A
TIOCA
TCNT value
Transfer
Select TGR function
Set buffer operation
<Buffer operation>
H'0200
Buffer operation
Start count
Figure 10-18 Example of Buffer Operation Setting Procedure
H'0200
Figure 10-19 Example of Buffer Operation (1)
H'0200
[1]
[2]
[3]
H'0450
[1] Designate TGR as an input capture register or
[2] Designate TGR for buffer operation with bits
[3] Set the CST bit in TSTR to 1 to start the count
output compare register by means of TIOR.
BFA and BFB in TMDR.
operation.
H'0450
H'0450
H'0520
H'0520
Time