p89lpc9351 NXP Semiconductors, p89lpc9351 Datasheet - Page 36

• Manufacturer Part Number: p89lpc9351
• Description: 8-bit Microcontroller With Accelerated Two-clock 80c51 Core 8 Kb 3 V Byte-erasable ?ash With 8-bit Adc
• Manufacturer: NXP Semiconductors

NXP Semiconductors
P89LPC9351_1
Preliminary data sheet
Fig 10. Capture/compare unit interrupts
TOCIE2A (TICR2.3)
TOCIE2B (TICR2.4)
TOCIE2C (TICR2.5)
TOCIE2D (TICR2.6)
TOCF2C (TIFR2.5)
TOCF2D (TIFR2.6)
TICIE2A (TICR2.0)
TICIE2B (TICR2.1)
TOCF2A (TIFR2.3)
TOCF2B (TIFR2.4)
TICF2A (TIFR2.0)
TICF2B (TIFR2.1)
7.22.9 CCU interrupts
7.23.1 Mode 0
TOIE2 (TICR2.7)
TOIF2 (TIFR2.7)
ECCU (IEN1.4)
7.23 UART
EA (IEN0.7)
Since N ranges from 0 to 15, the CCLK frequency can be in the range of PCLK to
PCLK 16.
There are seven interrupt sources on the CCU which share a common interrupt vector.
The P89LPC9351 has an enhanced UART that is compatible with the conventional 80C51
UART except that Timer 2 overflow cannot be used as a baud rate source. The
P89LPC9351 does include an independent baud rate generator. The baud rate can be
selected from the oscillator (divided by a constant), Timer 1 overflow, or the independent
baud rate generator. In addition to the baud rate generation, enhancements over the
standard 80C51 UART include Framing Error detection, automatic address recognition,
selectable double buffering and several interrupt options. The UART can be operated in
four modes: shift register, 8-bit UART, 9-bit UART, and CPU clock/32 or CPU clock/16.
Serial data enters and exits through RXD. TXD outputs the shift clock. 8 bits are
transmitted or received, LSB first. The baud rate is fixed at
frequency.
Rev. 01 — 19 November 2008
ENCODER
PRIORITY
interrupt
sources
other
8-bit microcontroller with 8-bit ADC
1
16
P89LPC9351
of the CPU clock
002aaa896
interrupt to
CPU
ENCINT.0
ENCINT.1
ENCINT.2
© NXP B.V. 2008. All rights reserved.
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