Rainbow-electronics T89C51CC01 Bedienungsanleitung PDF herunterladen (Seite 124)

124

T89C51CC01

Rev. D – 17-Dec-01

Table 89. ADCLK Register

ADCLK (S:F2h)

ADC Clock Prescaler

Reset Value: XXX0 0000b

Table 90. ADDH Register

ADDH (S:F5h Read Only)

ADC Data High byte register

Reset Value: 00h

Table 91. ADDL Register

ADDL (S:F4h Read Only)

ADC Data Low byte register

Reset Value: 00h

76543210

- - - PRS 4 PRS 3 PRS 2 PRS 1 PRS 0

Bit

Number

Bit

Mnemonic Description

7-5 -

Reserved

The value read from these bits are indeterminate. Do not set these bits.

4-0 PRS4:0

Clock Prescaler

ADC

= fcpu clock/ (4 (or 2 in X2 mode)* (PRS +1))

76543210

ADAT 9 ADAT 8 ADAT 7 ADAT 6 ADAT 5 ADAT 4 ADAT 3 ADAT 2

Bit

Number

Bit

Mnemonic Description

7-0 ADAT9:2

ADC result

bits 9-2

76543210

- - - - - - ADAT 1 ADAT 0

Bit

Number

Bit

Mnemonic Description

7-2 -

Reserved

The value read from these bits are indeterminate. Do not set these bits.

1-0 ADAT1:0

ADC result

bits 1-0

1 2 ... 119 120 121 122 123 124 125 126 127 128 129 ... 148 149

T89C51CC01 1

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