LPC55S2X datasheet(90/140 Pages) NXP

90 / 140 page

LPC55S2x/LPC552x

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Product data sheet

Rev. 2.2 — 8 December 2022

90 of 139

NXP Semiconductors

LPC55S2x/LPC552x

32-bit ARM Cortex-M33 microcontroller

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply

voltages.

[2] The +/- 1% accuracy specification applies to devices with date code 2041 (yyww) and onwards.

11.6 FRO (1 MHz)

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply

voltages.

11.7 FRO (32 KHz)

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply

voltages.

11.8 RTC oscillator

See Section 13.4 “RTC oscillator” for connecting the RTC oscillator to an external clock

source.

[1] Parameters are valid over operating temperature range unless otherwise specified.

11.9 I2C-bus

Table 29. Dynamic characteristic: FRO [2]

Tamb = 0 C to +85 C; 1.8 V  VBAT_DCDC  3.6 V.

Symbol Parameter

Conditions

Min

Typ[1]

Max

Unit

fosc(RC)

FRO clock frequency -

11.88

12.12

MHz

fosc(RC)

FRO clock frequency -

95.04

96.96

MHz

Table 30. Dynamic characteristic: FRO

Tamb = 40 C to +105 C; 1.8 V  VBAT_DCDC  3.6 V.

Symbol Parameter

Conditions

Min

Typ[1]

Max

Unit

fosc(RC)

FRO clock frequency -

0.85

1.15

MHz

Table 31. Dynamic characteristic: FRO

Tamb = 40 C to +105 C; 1.8 V  VBAT_DCDC  3.6 V.

Symbol Parameter

Conditions

Min

Typ[1]

Max

Unit

fosc(RC)

FRO clock frequency -

32.11

32.768

33.42

KHz

Table 32. Dynamic characteristic: RTC oscillator

Tamb = 40 C to +105 C; 1.8  VBAT_DCDC  3.6[1]

Symbol Parameter

Conditions

Min

Typ[1]

Max

Unit

input frequency

32.768

kHz

Table 33. Dynamic characteristic: I2C-bus pins[1]

Tamb = 40 C to +105 C; 1.8 V  VBAT_DCDC  3.6 V.[2]

Symbol Parameter

Conditions

Min

Max

Unit

fSCL

SCL clock frequency

Standard-mode

100

kHz

Fast-mode

400

kHz

Fast-mode Plus

MHz

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