LPC1759 datasheet(44/64 Pages) NXP

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LPC1759_58_56_54_52_51_4

Product data sheet

Rev. 04 — 26 January 2010

44 of 64

NXP Semiconductors

LPC1759/58/56/54/52/51

32-bit ARM Cortex-M3 microcontroller

11. Dynamic characteristics

11.1 Flash memory

[1]

Number of program/erase cycles.

11.2 External clock

[1]

Parameters are valid over operating temperature range unless otherwise specified.

[2]

Typical ratings are not guaranteed. The values listed are at room temperature (25

°C), nominal supply voltages.

Table 7.

Flash characteristics

Tamb = −40 °C to +85 °C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Nendu

endurance

[1] 10000

cycles

tret

retention time

powered

years

unpowered

years

Table 8.

Dynamic characteristic: external clock

Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]

Symbol

Parameter

Conditions

Min

Typ[2]

Max

Unit

fosc

oscillator frequency

MHz

Tcy(clk)

clock cycle time

1000

tCHCX

clock HIGH time

Tcy(clk) × 0.4

tCLCX

clock LOW time

Tcy(clk) × 0.4

tCLCH

clock rise time

tCHCL

clock fall time

Fig 10. External clock timing (with an amplitude of at least Vi(RMS) = 200 mV)

tCHCL

tCLCX

tCHCX

Tcy(clk)

tCLCH

002aaa907

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