UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 569

• 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: -

10.4.2 Dead-time control (generation of negative-phase wave signal)
(internal signal)
(internal signal)
(1) Dead-time control mechanism
TOBnm signal
TOBnm signal
Remark
Dead-time
Dead-time
counter m
counter m
pin output
pin output
pin output
pin output
In the 6-phase PWM output mode, compare registers 1 to 3 (TABnCCR1, TABnCCR2, and TABnCCR3) are
used to set the duty factor, and compare register 0 (TABnCCR0) is used to set the cycle. By setting these four
registers and by starting the operation of TAB, three types of PWM output waves (basic 3-phase waves) with a
variable duty factor are generated. These three PWM output waves are input to the timer Qn option unit
(TMQOPn) and their inverted signal with dead-time is created to generate three sets of (six) PWM waves.
The TMQOPn unit consists of three 10-bit counters (dead-time counters 1 to 3) that operate in synchronization
with the count clock of TABn, and a TABn dead-time compare register (TABnDTC) that specifies dead time. If
“a” is set to the TABnDTC register, the dead-time value is “a”, and interval “a” is created between a positive-
phase wave and a negative-phase wave.
TOBnBm
TOBnBm
TOBnTm
TOBnTm
counter
counter
16-bit
16-bit
n = 0, 1, m = 1 to 3
0000H
Figure 10-8. PWM Output Waveform with Dead Time (1)
(a) When dead time is inserted (TABnDTC register = a)
a
0
(b) No dead time (TABnDTC register = 000H)
CHAPTER 10 MOTOR CONTROL FUNCTION
User’s Manual U18279EJ3V0UD
a
0
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