w83l950d Winbond Electronics Corp America, w83l950d Datasheet - Page 71
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w83l950d
Manufacturer Part Number
w83l950d
Description
Peripheral Personal Computer Keyboard Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83L950D.pdf
(105 pages)
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The formula for duty cycle is:
For example:
16. A-D CONVERTER
The A-D conversion register is a read-only register that stores the result of an A-D conversion. When
reading this register during an A-D conversion, the previous conversion result is read.
Bit 7 of the A-D conversion register 2 is the conversion mode selection bit. When this bit to "0”, the A-D
converter becomes the 10-bit A-D mode. When this bit is set to "1", that becomes the 8-bit A-D mode.
The conversion result of the 8-bit A-D mode is stored in the A-D conversion register 1. As for 10-bit A-D
mode, 10-bit reading or 8-bit reading can be performed by selecting the reading procedure of the A-D
conversion register 1, 2 after A-D Conversion is completed. (in blowing figure).
10-bit reading (Read AD2 before AD1)
8-bit reading (Read only AD1)
The A-D conversion register 1 performs the 8-bit reading inclined to MSB. After reset, the A-D
conversion is started, or reading of the A-D converter register 1 is generated; and the register becomes
the 8-bit reading inclined to LSB after the A-D converter register 2 is generated.
Note: The AD pins should be programmed to INPUT mode for AD input purpose.
-------------------------------------
May generate a 122Hz and 50% duty cycle output signal .
PWM2HSH, PWM2HSL
PWM2PH, PWM2PL
Select clock from 8MHz in bit 1,0 of APWMCON,
Set PWM2PL to 0FFh
Set PWM2PH to 0FFh
Set PWM2HSL to 0FFh
Set PWM2HSH to 07Fh
AD2
AD1
AD1
b7
b9
b6
b8
b5
b7
b4
b6
- 62 -
b3
b5
b2
b4
b9
b1
b3
W83L950D
b8
b0
b2
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