UPD70F3771GF-GAT-AX Renesas Electronics America, UPD70F3771GF-GAT-AX Datasheet - Page 596

• Manufacturer Part Number: UPD70F3771GF-GAT-AX
• Description: MCU 32BIT V850ES/JX3-H 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Hr

Specifications of UPD70F3771GF-GAT-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 48MHz
• Connectivity: CAN, CSI, EBI/EMI, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

V850ES/JG3-H, V850ES/JH3-H
11.4.2 Dead-time control (generation of negative-phase wave signal)
R01UH0042EJ0400 Rev.4.00
Sep 30, 2010
(1) Dead-time control mechanism
TOAB1m signal
(internal signal)
TOAB1m signal
(internal signal)
Remark
In the 6-phase PWM output mode, compare registers 1 to 3 (TAB1CCR1, TAB1CCR2, and TAB1CCR3) are used to
set the duty factor, and compare register 0 (TAB1CCR0) is used to set the cycle. By setting these four registers
and by starting the operation of TAB1, 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 Q option unit (TMQOP) and their
inverted signal with dead-time is created to generate three sets of (six) PWM waves.
The TMQOP unit consists of three 10-bit counters (dead-time counters 1 to 3) that operate in synchronization with
the count clock of TAB1, and a TAB1 dead-time compare register (TAB1DTC) that specifies dead time. If “a” is set
to the TAB1DTC register, the dead-time value is “a”, and interval “a” is created between a positive-phase wave and
a negative-phase wave.
TOAB1Bm
TOAB1Tm
Dead-time
TOAB1Bm
counter m
TOAB1Tm
pin output
pin output
Dead-time
counter m
pin output
pin output
counter
counter
16-bit
16-bit
m = 1 to 3
0000H
(a) When dead time is inserted (TAB1DTC register = a)
a
0
Figure 11-8. PWM Output Wave with Dead Time (1)
(b) No dead time (TAB1DTC register = 000H)
a
0
CHAPTER 11 MOTOR CONTROL FUNCTION
Page 596 of 1509