UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 485

• 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: -

(2) PWM output mode operation timing
(a) Changing pulse width during operation
INTTTEQCm0 signal
To change the PWM waveform while the counter is operating, write the TTmCCR1 register last.
Rewrite the TTmCCRa register after writing the TTmCCR1 register after the INTTTEQCm0 signal is
detected.
To transfer data from the TTmCCRa register to the CCRa buffer register, the TTmCCR1 register must be
written.
To change both the cycle and active level of the PWM waveform at this time, first set the cycle to the
TTmCCR0 register and then set the active level to the TTmCCR1 register.
To change only the cycle of the PWM waveform, first set the cycle to the TTmCCR0 register, and then
write the same value (same as preset value of the TTmCCR1 register) to the TTmCCR1 register.
To change only the active level width (duty factor) of the PWM waveform, only the TTmCCR1 register has
to be set.
After data is written to the TTmCCR1 register, the value written to the TTmCCRa register is transferred to
the CCRa buffer register in synchronization with clearing of the 16-bit counter, and is used as the value
compared with the 16-bit counter.
To write the TTmCCR0 or TTmCCR1 register again after writing the TTmCCR1 register once, do so after
the INTTTEQCm0 signal is generated. Otherwise, the value of the CCRa buffer register may become
undefined because the timing of transferring data from the TTmCCRa register to the CCRa buffer register
conflicts with writing the TTmCCRa register.
Remark
CCR0 buffer register
CCR1 buffer register
TTmCCR0 register
TTmCCR1 register
TOTm1 pin output
16-bit counter
TTmCE bit
V850E/IF3: m = 1, a = 0, 1, V850E/IG3: m = 0, 1, a = 0, 1
FFFFH
0000H
CHAPTER 8 16-BIT TIMER/EVENT COUNTER T (TMT)
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