Peripheral Functions - Renesas RA6T2 Application Note

Sensorless vector control for permanent magnetic
synchronous motor - 1shunt current detection

2.2.4 Peripheral functions

List of the peripheral functions used in this system is given in Table 2-5.
Table 2-5 List of the Peripheral Functions
Peripheral
12-bit A/D Converter
AGT
GPT
POEG
2.2.4.1 RA6T2
(1). 12-bit A/D Converter (12ADC)
Phase current (with an 1shunt resistance), inverter bus voltage (Vdc) and rotation speed command (VR1)
are measured in "Single scan mode" (use a hardware trigger).
Detection of the phase current uses FIFO function.
A/D conversion is implemented to be synchronized with carrier synchronized interrupt by using direct link
function to GPT.
(2). Low Power Asynchronous General-Purpose Timer (AGT)
The AGT is used as 1 [ms] interval timer.
(3). General PWM Timer (GPT)
On the channel 4, 5, and 6, output with dead time is performed by using the Triangle-wave PWM mode 3.
(4). Port Output Enable for GPT (POEG)
The port executing PWM output are set to high impedance state when an overcurrent is detected (when a
low level of the GTETRGD port is detected) .
R01AN6840EJ0100 Rev.1.00
May 23, 2023
Purpose
Phase current measurement with
1shunt resistance
Inverter bus voltage
measurement
For rotation speed command
value input (analog value)
Speed control interval timer
U phase PWM output
V phase PWM output
W phase PWM output
PWM emergency stop input at the
time of overcurrent detection
Figure 2-3 Overall FSP Stacks diagram
For Renesas Flexible Motor Control Series
RA6T2 RA4T1
AN004 AN000
AN006 AN004
AN008 AN005
AGT0 AGT0
CH4 CN1
CH5 CN2
CH6 CN3
Group D Group B
RA6T3
AN000
AN004
AN005
AGT0
CN1
CN2
CN3
Group B
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