UPSD3312D datasheet(152/272 Pages) STMICROELECTRONICS

152 / 272 page

Obsolete

Product(s)

- Obsolete

Product(s)

Obsolete

Product(s)

- Obsolete

Product(s)

Analog-to-digital converter (ADC)

UPSD33xx

152/272

Doc ID 9685 Rev 7

Table 95.

ADCPS register bit definition (SFR 94h, Reset Value 00h)

Table 96.

ADAT0 register (SFR 95H, Reset Value 00h)

Table 97.

ADAT1 register (SFR 96h, Reset Value 00h)

4..2

ADS2.. 0

Analog channel Select

000 Select channel 0 (P1.0)

001 Select channel 0 (P1.1)

010 Select channel 0 (P1.2)

011 Select channel 0 (P1.3)

101 Select channel 0 (P1.5)

110 Select channel 0 (P1.6)

111 Select channel 0 (P1.7)

1ADST

ADC Start Bit

0 = Force to zero

1 = Start ADC, then after one cycle, the bit is

cleared to '0.'

0ADSF

ADC Status Bit

0 = ADC conversion is not completed

1 = ADC conversion is completed. The bit can

also be cleared with software.

Bit

Symbol

Function

7:4

–

Reserved

ADCCE

ADC Conversion Reference Clock Enable

0 = ADC reference clock is disabled (default)

1 = ADC reference clock is enabled

2:0

ADCPS[2:0]

ADC Reference Clock PreScaler

Only three Prescaler values are allowed:

ADCPS[2:0] = 0, for fOSC frequency 16 MHz or less. Resulting ADC clock

is fOSC.

ADCPS[2:0] = 1, for fOSC frequency 32 MHz or less. Resulting ADC clock

is fOSC/2.

ADCPS[2:0] = 2, for fOSC frequency 32 MHz > 40 MHz. Resulting ADC

clock is fOSC/4.

Bit

Symbol

Function

7:0

–

Store ADC output, Bit 7 - 0

Bit

Symbol

Function

7:2

–

Reserved

1.. 0

–

Store ADC output, Bit 9, 8

Table 94.

ACON register bit definition (continued)

Bit

Symbol

Function

UPSD3312D Datasheet(PDF) 152 Page - STMicroelectronics

UPSD3312D Datasheet(HTML) 152 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL