tmp88f846ug TOSHIBA Semiconductor CORPORATION, tmp88f846ug Datasheet - Page 122

• Manufacturer Part Number: tmp88f846ug
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

driver)
14. Motor Control Circuit (PMD: Programmable motor
14.2 Configuration of the Motor Control Circuit
points of the induced voltage or position sensor signal, a timer unit to generate events at three instances of electrical
angle timing, and a three-phase PWM output unit to produce three-phase output PWM waveforms. Also included are
an electrical angle timer unit to count degrees of electrical angle and a waveform arithmetic unit to calculate sinuso-
idal waveform output duty cycles. The input/output units are configured as shown in the diagram below. When using
ports for the PMD function, set the Port input/output control register (P3CRi) to 0 for the input ports, and for the out-
put ports, set the data output latch (P3i) to 1 and then the port input/output control register to 1. Other input/output
ports can be set in the same way for use of the PMD function.
The motor control circuit consists of various units. These include a position detection unit to detect the zero-cross
Note 1: Always use the LDW instruction to set data in the 9, 12 and 16-bit data registers.
Note 2: The EMG circuit initially is enabled. For PMD output, fix the EMG input port (P36) "H" high level or disable the
Note 3: The EMG circuit initially is enabled. When using Port P3 as input/output IO ports, disable EMG.
Note 4: When going to STOP mode, be sure to turn all of the PMD functions off before entering STOP mode.
EMG circuit before using for PMD output.
Figure 14-3 Block Diagram of the Motor Control Circuit
Position signal
imer circuit
detection
Position
circuit
input
Data and address buses
Motor control circuit
Electrical angle
Error detection
timer circuit
generation
Waveform
CPU core
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circuit
input
U, V, W, X, Y, Z
Waveform
arithmetic
circuit
TMP88F846UG