CD00001237 datasheet(89/105 Pages) STMICROELECTRONICS

89 / 105 page

ST6215C ST6225C

89/105

11.11 8-BIT ADC CHARACTERISTICS

Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.

Notes:

1. Unless otherwise specified, typical data are based on TA=25°C and VDD=5V.

2. The ADC refers to VDD and VSS.

3. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10k

Ω). Data

based on characterization results, not tested in production.

4. As a stabilization time for the AD converter is required, the first conversion after the enable can be wrong.

Figure 72. Typical Application with ADC

Note: ADC not present on some devices. See device summary on page 1.

Symbol

Parameter

Conditions

Min

Typ 1)

Max

Unit

fOSC

Clock frequency

1.2

fOSC

MHz

VAIN

Conversion range voltage 2)

VSS

VDD

RAIN

External input resistor

10 3)

tADC

Total convertion time

fOSC=8MHz

fOSC=4MHz

140

μs

tSTAB

Stabilization time 4)

tCPU

fOSC=8MHz

3.25

6.5

µs

ADI

Analog input current during conver-

sion

1.0

µA

ACIN

Analog input capacitance

AINx

ST62XX

VAIN

RAIN

10pF

ADC

10M

≈150Ω

CD00001237 数据表(PDF) 89 Page - STMicroelectronics

CD00001237 数据表(HTML) 89 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

数据表下载