W79E225A Datasheet, PDF (62/200 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E225A/227A Data Sheet
The ADCI and ADCS control the ADC conversion as below:
ADCI
ADCS
ADC STATUS
0
0
ADC not busy; A conversion can be started.
0
1
ADC busy; Start of a new conversion is blocked.
1
0
Conversion completed; Start of a new conversion requires ADCI = 0.
1
1
This is an internal temporary state that user can ignore it.
ADC CONVERTER RESULT HIGH REGISTER
Bit:
7
6
5
4
3
2
1
ADC.9
ADC.8
ADC.7
ADC.6
ADC.5
ADC.4
ADC.3
Mnemonic: ADCH
Address: E2h
BIT NAME
FUNCTION
7-0 ADC[9:2] 8 MSB of 10 bit A/D conversion result. ADCH is a read only register.
0
ADC.2
ADC CONVERTER RESULT LOW REGISTER
Bit:
7
6
5
4
3
2
1
0
ADCLK.1 ADCLK.0 -
-
-
-
ADC.1
ADC.0
Mnemonic: ADCL
Address: E3h
BIT NAME
FUNCTION
ADC Clock Frequency Select. The 10 bit ADC needs a clock to drive the
converting that the clock frequency may not over 4MHz. ADCLK[1:0] controls the
frequency of the clock to ADC block:
7-6 ADCLK
ADCLK.1 ADCLK.0 ADC Clock Frequency
0
0 Crystal clock / 4 (Default)
0
1 Crystal clock / 8
1
0 Crystal clock / 16
1
1 Reserved
1-0 ADC
2 LSB of 10-bit A/D conversion result. Both bits are read only.
PWM DEAD-TIME CONTROL REGISTER 1
Bit:
7
6
5
4
PDTC1.7 PDTC1.6 PDTC1.5 PDTC1.4
Mnemonic: PDTC1
3
PDTC1.3
2
1
PDTC1.2 PDTC1.1
Address: E5h
0
PDTC1.0
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Publication Release Date: December 14, 2007
Revision A2.0