P89LPC930 datasheet(46/55 Pages) PHILIPS

46 / 55 page

Philips Semiconductors

P89LPC930/931

8-bit microcontrollers with two-clock 80C51 core

Product data

Rev. 05 — 15 December 2004

46 of 55

9397 750 14472

Table 9:

AC characteristics

VDD = 3.0 V to 3.6 V, unless otherwise speciﬁed.

Tamb = −40 °Cto+85 °C for industrial, unless otherwise speciﬁed.[1]

Symbol

Parameter

Conditions

Variable clock

fosc =18MHz

Unit

Min

Max

Min

Max

fRCOSC

internal RC oscillator frequency

7.189

7.557

7.189

7.557

MHz

fWDOSC

internal Watchdog oscillator

frequency

320

520

320

520

kHz

fosc

oscillator frequency

[2] 0

MHz

tCLCL

clock cycle

see Figure 20

--ns

fCLKP

CLKLP active frequency

MHz

Glitch ﬁlter

glitch rejection, P1.5/RST pin

signal acceptance, P1.5/RST pin

125

glitch rejection, any pin except

P1.5/RST

signal acceptance, any pin except

P1.5/RST

External clock

tCHCX

HIGH time

see Figure 20

tCLCL − tCLCX

tCLCX

LOW time

see Figure 20

tCLCL − tCHCX

tCLCH

rise time

see Figure 20

-5

tCHCL

fall time

see Figure 20

-5

Shift register (UART mode 0)

tXLXL

serial port clock cycle time

16 tCLCL

888

tQVXH

output data set-up to clock rising

edge

13 tCLCL

722

tXHQX

output data hold after clock rising

edge

-tCLCL + 20

tXHDX

input data hold after clock rising

edge

-0

tDVXH

input data valid to clock rising edge

150

SPI interface

fSPI

Operating frequency

3.0 MHz (Slave)

CCLK

⁄6

MHz

4.5 MHz (Master)

CCLK

⁄4

4.5

MHz

tSPICYC

Cycle time

see Figures

15, 16, 17, 18

3.0 MHz (Slave)

⁄CCLK

333

4.5 MHz (Master)

⁄CCLK

222

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