ADUC847 Analog Devices, ADUC847 Datasheet - Page 56

• Manufacturer Part Number: ADUC847
• Description: Precision Analog Microcontroller: 12MIPS 8052 Flash MCU + 10-Ch 24-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC847

• Mcu Core: 8052
• Mcu Speed (mips): 12
• Sram (bytes): 2304Bytes
• Gpio Pins: 34
• Adc # Channels: 10
• Other: PWM

ADuC845/ADuC847/ADuC848
PWMCON PWM Control SFR
SFR Address:
Power-On Default:
Bit Addressable:
Table 34. PWMCON PWM Control SFR
Bit No.
7
6, 5, 4
3, 2
1, 0
PWM Pulse Width High Byte (PWM0H)
SFR Address:
Power-On Default:
Bit Addressable:
Table 35. PWM0H: PWM Pulse Width High Byte
PWM0H.7
0
R/W
PWM Pulse Width Low Byte (PWM0L)
SFR Address:
Power-On Default:
Bit Addressable:
Table 36. PWM0L: PWM Pulse Width Low Byte
PWM0L.7
0
R/W
Name
–––
PWM2, PWM1, PWM0
PWS1, PWS0
PWC1, PWC0
PWM0H.6
0
R/W
PWM0L.6
0
R/W
AEH
00H
No
B2H
00H
No
B1H
00H
No
Description
Not Implemented. Write Don’t Care.
PMW Mode Selection.
PWM2
0
0
0
0
1
1
1
1
PWM Clock Source Divider.
PWS1
0
0
1
1
PWM Clock Source Selection.
PWC1
0
0
1
1
PWM0H.5
0
R/W
PWM0L.5
0
R/W
PWM1
0
0
1
1
0
0
1
1
PWS0
0
1
0
1
PWC0
0
1
0
1
PWM0
0
1
0
1
0
1
0
1
Selected clock.
Selected clock divided by 4.
Selected clock divided by 16.
Selected clock divided by 64.
F
F
External input on P2.7.
F
PWM0H.4
0
R/W
PWM0L.4
0
R/W
XTAL
XTAL
VCO
/15 (2.184 kHz).
(12.58 MHz).
(32.768 kHz).
Rev. B | Page 56 of 108
Mode 0:
Mode 1:
Mode 2:
Mode 3:
Mode 4:
Mode 5:
Mode 6:
Mode 7:
PWM0H.3
0
R/W
PWM0L.3
0
R/W
PWM disabled.
Single 16-bit output with programmable pulse and cycle time.
Twin 8-bit outputs.
Twin 16-bit outputs.
Dual 16-bit pulse density outputs.
Dual 8-bit outputs.
Dual 16-bit pulse density RZ outputs.
PWM counter reset with outputs not used.
PWM0H.2
0
R/W
PWM0L.2
0
R/W
PWM0H.1
0
R/W
PWM0L.1
0
R/W
PWM0H.0
0
R/W
PWM0L.0
0
R/W