STM32F051R4U7(2012) 查看數據表（PDF） - STMicroelectronics

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STM32F051R4U7
(Rev.:2012)

Low- and medium-density advanced ARM™-based 32-bit MCU with 16 to 64 Kbytes Flash, timers, ADC, DAC and comm. interfaces

STMicroelectronics 

Electrical characteristics

STM32F051x

6.3.18

6.3.19

6.3.20

Temperature sensor characteristics

Table 59. TS characteristics

Symbol

Parameter

Min

Typ

TL(1)

VSENSE linearity with temperature

Avg_Slope(1) Average slope

-

±1

4.0

4.3

V25

tSTART(1)

TS_temp(1)(2)

Voltage at 25 °C

Startup time

ADC sampling time when reading the

temperature

1.34

1.43

4

-

17.1

-

1. Guaranteed by design, not tested in production.

2. Shortest sampling time can be determined in the application by multiple iterations.

Max

Unit

±2

°C

4.6 mV/°C

1.52

V

10

µs

-

µs

VBAT monitoring characteristics

Table 60. VBAT monitoring characteristics

Symbol

Parameter

Min Typ

R

Q

Er(1)

TS_vbat(1)(2)

Resistor bridge for VBAT

Ratio on VBAT measurement

Error on Q

ADC sampling time when reading the VBAT

1mV accuracy

-

50

-

2

–1

-

5

-

1. Guaranteed by design, not tested in production.

2. Shortest sampling time can be determined in the application by multiple iterations.

Max

-

-

+1

-

Unit

KΩ

%

µs

Timer characteristics

The parameters given in Table 61 are guaranteed by design.

Refer to Section 6.3.13: I/O port characteristics for details on the input/output alternate

function characteristics (output compare, input capture, external clock, PWM output).

Table 61. TIMx(1) characteristics

Symbol

Parameter

Conditions

Min

Max

Unit

tres(TIM)

fEXT

ResTIM

Timer resolution time

fTIMxCLK = 48 MHz

Timer external clock

frequency on CH1 to CH4 fTIMxCLK = 48 MHz

Timer resolution

TIMx (except TIM2)

TIM2

1

20.8

0

0

-

-

-

-

fTIMxCLK/2

24

16

32

tTIMxCLK

ns

MHz

MHz

bit

84/105

Doc ID 022265 Rev 3

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