UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 590

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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(b) Rewriting TABnCCR0 register
The transfer timing in Figure 10-28 is at the point where the crest timing occurs. While the 16-bit counter is
counting down, the cycle changes and an asymmetrical triangular wave is output. Because the cycle
changes, rewrite the duty factor (voltage data value).
When rewriting the TABnCCR0 register in the batch rewrite mode, the output waveform differs depending
on whether transfer occurs at the crest (match between the 16-bit counter value and TABnCCR0 register
value) or at the valley (match between the 16-bit counter value and 0001H). Usually, it is recommended to
rewrite the TABnCCR0 register while the 16-bit counter is counting down, and transfer the register value at
the transfer timing of the crest timing.
Figure 10-28 shows an example of rewriting the TABnCCR0 register while the 16-bit counter is counting up
(during period <1> in Figure 10-27). Figure 10-29 shows an example of rewriting the TABnCCR0 register
while the counter is counting down (during period <2> in Figure 10-27).
counter
16-bit
Figure 10-27. Basic Operation of 16-Bit Counter
CHAPTER 10 MOTOR CONTROL FUNCTION
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User’s Manual U18279EJ3V0UD
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