ST7LITE49K2 datasheet(197/245 Pages) STMICROELECTRONICS

197 / 245 page

ST7LITE49K2

Electrical characteristics

197/245

13.3.5

Internal RC oscillator

To improve clock stability and frequency accuracy, it is recommended to place a decoupling

capacitor, typically 100 nF, between the VDD and VSS pins as close as possible to the ST7

device

Internal RC oscillator calibrated at 5.0 V

The ST7 internal clock can be supplied by an internal RC oscillator (selectable by option

byte).

Table 76.

Internal RC oscillator characteristics (5.0 V calibration)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fRC

Internal RC oscillator

frequency

RCCR = FF (reset value),

TA = 25 °C, VDD = 5 V

5.5

MHz

RCCR=RCCR0(1),

TA = 25 °C, VDD = 5 V

See Section 7.1.1: Internal RC oscillator

7.84

8.16

fG(RC)

RC trimming

granularity

TA = 25 °C, VDD = 5 V

kHz

ACCRC

Accuracy of internal

RC oscillator with

RCCR=RCCR01)

TA = 25 °C, VDD = 5 V

TA = 25 °C, VDD = 4.5 to 5.5 V

(2)

Tested in production at 5.0 V only

-2

TA= 0 to +85 °C,

VDD = 4.5 to 5.5 V

(2)

-2.5

TA = 0 to +125 °C,

VDD = 4.5 to 5.5 V

(2)

-3

TA = -40 to 0 °C,

VDD = 4.5 to 5.5 V

(3)

Garranted by characterization - Not tested in production.

-4

2.5

IDD(RC)

RC supply current

fCPU = 4 MHz

VDD = 5 V

770 (4)

Data based on a differential IDD measurement in run mode (fCPU = 8 MHz) between external clock source

configuration and internal RC oscillator clock source configuration

μA

fCPU = 8 MHz

VDD = 5 V

820 (4)

μA

tsu(RC)

RC oscillator setup

time

TA = 25 °C, VDD = 5 V

4 (5)

Not tested in production

μs

ST7LITE49K2 数据表(PDF) 197 Page - STMicroelectronics

ST7LITE49K2 数据表(HTML) 197 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

链接网址

ST7LITE49K2 数据表(PDF) 197 Page - STMicroelectronics

ST7LITE49K2 数据表(HTML) 197 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

链接网址

数据表下载