tmp88fw45afg TOSHIBA Semiconductor CORPORATION, tmp88fw45afg Datasheet - Page 176

• Manufacturer Part Number: tmp88fw45afg
• Description: 8 Bit Microcontroller Tlcs-870/x Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

14.5
Three-phase PWM Output Unit
Overload protection
setting current
Input MG pin
Input CL pin
PWM output
("H" active)
MG setting current
CRA<CLCNT>. The sampling times can be set in the range of 1 to 15 times at 200 ns period (when fc
= 20 MHz). If a low level is detected as many times as the specified number, overload protection is
assumed.
facility allows selecting to disable no phases, all phases, PWM phases, or all upper phases/all lower
phases. When selected to disable all upper phases/all lower phases, port output is determined by their
turn-on status immediately before being disabled. When two or more upper phases are active, all upper
phases are turned on and all lower phases are turned off; when two or more lower phases are active, all
upper phases are turned off and all lower phases are turned on.
protective circuit is disabled, overload protective interrupts (INTCLM) are not generated.
The number of times the overload protective input is sampled can be set by using the EMG-
The output disabled phases during overload protection are set by using the EMGCRB<CLMD>. This
When output phase are cut off, output is inactive (low in the case of high active). When the overload
Figure 14-14 Example of Protection Circuit Operation
I (Current)
Page 162
Overload protection
(Output cut off)
(High-Z output)
MG protection
TMP88FW45AFG
t (time)