LPC2917 datasheet(56/68 Pages) PHILIPS

56 / 68 page

LPC2917_19_1

Preliminary data sheet

Rev. 1.01 — 15 November 2007

56 of 68

NXP Semiconductors

LPC2917/19

ARM9 microcontroller with CAN and LIN

Internal clock

fclk(sys)

System clock

frequency. See

Table 23.

MHz

Tclk(sys)

System clock period.

See Table 23.

12.5

100

Low-Power Ring Oscillator

fref(RO)

RO reference

frequency.

0.36

0.4

0.42

MHz

tstartup

Start-up time.

At maximum frequency

[2].

-6

100

μs

Oscillator

fi(osc)

Oscillator input

frequency.

Maximum frequency is

the clock input of an

external clock source

applied to the Xin pin.

MHz

tstartup

Start-up time.

At maximum frequency.

[2] [3]

500

μs

PLL

fi(PLL)

PLL input frequency.

MHz

fo(PLL)

PLL output frequency.

160

MHz

CCO; direct mode.

156

320

MHz

Analog-to-digital converter

fi(ADC)

ADC input frequency.

[4]

4.5

MHz

fs(max)

Maximum sampling

rate.

fi(ADC) = 4.5 MHz;

fs =fi(ADC)/(n+1) with

n=resolution

resolution 2 bit

1500

ksample/s

resolution 10 bit

400

ksample/s

tconv

Conversion time.

In number of ADC clock

cycles.

cycles

In number of bits.

bits

Flash memory

tinit

Initialization time.

150

μs

twr(pg)

Page write time.

0.95

1.05

ter(sect)

Sector erase time.

100

105

tfl(BIST)

Flash word BIST time.

tacc(clk)

clock access time

63.4

tacc(addr)

address access time

60.3

external static memory controller

ta(R)int

Internal read-access

time.

20.5

Table 31.

Dynamic characteristics …continued

VDD(CORE) =VDD(OSC_PLL) ; VDD(IO) = 2.7 V to 3.6 V; VDD(A3V3) = 3.0 V to 3.6 V; Tvj = −40 °C; all voltages are measured with

respect to ground; positive currents flow into the IC; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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