tmp88fw45afg TOSHIBA Semiconductor CORPORATION, tmp88fw45afg Datasheet - Page 236

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

19.2
Control
19.2
19.3
19.3.1
Control Register
Data Register
HPWMDR0
HPWMDR1
HPWMCR
(000CH)
(000DH)
(000EH)
Before writing to these registers, set the HPWMCR<PWMST> = 1 to make them ready for setup. When the
HPWMCR<PWMST> is set to 0, each control register is reset, so that the high-speed PWM can be reset in software.
Note 1: The PWM output pulse width varies with the clock duty cycle.
Note 2: For the data registers, set data 10H to F0H.
Note 3: When HPWMCR<PWMST> = 0, the internal counter is cleared and data “1” is output to the port.
Note 4: Before selecting PWM mode, make sure HPWMCR<PWMST> = 0.
Note 5: Before entering STOP mode, set HPWMCR<PWMST, HPE0, and HPE1> all to 0.
Note 6: If HPWMCR<HPE0 or HPE1> is altered in the middle of PWM period, the waveform may be distorted. To avoid waveform
The high-speed PWM is controlled using the Control Register (HPWMCR) and Data Registers (HPWMDR0, 1).
Control
Functional Description
channels, and cannot be set separately for each channel.
The high-speed PWM has the following three modes of operation:
Use the HPWMCR<PWMMOD> to select operation mode. Note that operation mode is common to both
Operation modes
DATA7
DATA7
PWMMOD
distortion, make sure HPWMCR<PWMST> = 0 when enabling HPWM output.
Note:These values apply to the case where the source clock (X1) is 20 MHz.
HPE1
PWMST
・ 8-bit mode: (T = 2
・ 7-bit mode: (T = 2
・ 6-bit mode: (T = 2
HPE0
HPE1
7
7
7
DATA6
DATA6
HPE0
6
6
6
Select PWM mode
Run/stop 8-bit up counter
Control HPWM0 output
Control HPWM1 output
DATA5
DATA5
5
5
5
8
7
6
× clock period, f ≈ 78 kHz)
× clock period, f ≈ 156 kHz)
× clock period, f ≈ 313 kHz)
DATA4
DATA4
4
4
4
PWMST
DATA3
DATA3
00: Mode 0 (8 bits)
01: Mode 1 (7 bits)
10: Mode 2 (6 bits)
11: Reserved
0: STOP
1: RUN
0: Disable
1: Enable
0: Disable
1: Enable
3
3
3
Page 222
DATA2
DATA2
2
2
2
DATA1
DATA1
1
1
1
PWMMOD
DATA0
DATA0
0
0
0
R/W (Initial value: 00** 0*00)
R/W (Initial value: **** ****)
R/W (Initial value: **** ****)
TMP88FW45AFG
R/W