89LPC925 datasheet(44/49 Pages) PHILIPS

Part #	89LPC925

Description	8-bit microcontrollers with accelerated two-clock 80C51 core 4 kB/8 kB 3 V low-power Flash with 8-bit A/D converter

PDF	49 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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44 / 49 page

Philips Semiconductors

P89LPC924/925

8-bit microcontrollers with accelerated two-clock 80C51 core

Product data

Rev. 03 — 15 December 2004

44 of 49

9397 750 14471

Fig 12. Shift register mode timing.

Valid

tXLXL

002aaa425

Set TI

Set RI

tXHQX

tQVXH

tXHDV

tXHDX

Clock

Output Data

Write to SBUF

Input Data

Clear RI

Fig 13. External clock timing.

tCHCL

tCLCX

tCHCX

tCLCH

002aaa416

0.2 VDD + 0.9

0.2 VDD - 0.1 V

VDD - 0.5 V

0.45 V

Table 11:

AC characteristics, ISP entry mode

VDD = 2.4 V to 3.6 V, unless otherwise speciﬁed.

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

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

tVR

RST delay from VDD active

µs

tRH

RST HIGH time

µs

tRL

RST LOW time

µs

Fig 14. ISP entry waveform.

002aaa426

VDD

RST

tRL

tVR

tRH

89LPC925 Datasheet(PDF) 44 Page - NXP Semiconductors

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