P89LPC938 NXP Semiconductors, P89LPC938 Datasheet - Page 23

• Manufacturer Part Number: P89LPC938
• Description: The P89LPC938 is a single-chip microcontroller, available in low cost packages, based ona high performance processor architecture that executes instructions in two to four clocks,six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 14051
Product data sheet
Fig 7. Interrupt sources, interrupt enables, and power-down wake-up sources.
(1) See
(RTCCON.1)
WDOVF
Section 7.19 “CCU”
RTCF
ERTC
In edge-triggered mode, if successive samples of the INTn pin show a HIGH in one cycle
and a LOW in the next cycle, the interrupt request flag IEn in TCON is set, causing an
interrupt request.
If an external interrupt is enabled when the P89LPC938 is put into Power-down or Idle
mode, the interrupt will cause the processor to wake-up and resume operation. Refer to
Section 7.15 “Power reduction modes”
any CCU interrupt
ENADCI0
BNDI1
ADCI0
ENBI1
EA (IE0.7)
TI & RI/RI
ES/ESR
EWDRT
ECCU
CMF2
CMF1
KBIF
EKBI
EI2C
SPIF
ESPI
BOF
EBO
EST
EX0
EX1
ET0
ET1
TF0
TF1
IE0
IE1
EC
(1)
SI
TI
Rev. 01 — 25 February 2005
EADC
EEIF
EIEE
for details.
8-bit microcontroller with 10-bit A/D converter
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
002aab104
P89LPC938
interrupt
to CPU
wake-up
(if in power-down)
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