p89lpc9351 NXP Semiconductors, p89lpc9351 Datasheet - Page 10

• 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
Table 3.
[1]
P89LPC9351_1
Preliminary data sheet
Symbol
P3.0/XTAL2/
CLKOUT
P3.1/XTAL1
V
V
SS
DD
Input/output for P1.0 to P1.4, P1.6, P1.7. Input for P1.5.
Pin description
Pin
PLCC28,
TSSOP28
9
8
7
21
…continued
Type Description
I/O
O
O
I/O
I
I
I
P3.0 — Port 3 bit 0.
XTAL2 — Output from the oscillator amplifier (when a crystal oscillator option is
selected via the flash configuration.
CLKOUT — CPU clock divided by 2 when enabled via SFR bit (ENCLK -TRIM.6).
It can be used if the CPU clock is the internal RC oscillator, watchdog oscillator or
external clock input, except when XTAL1/XTAL2 are used to generate clock source
for the RTC/system timer.
P3.1 — Port 3 bit 1.
XTAL1 — Input to the oscillator circuit and internal clock generator circuits (when
selected via the flash configuration). It can be a port pin if internal RC oscillator or
watchdog oscillator is used as the CPU clock source, and if XTAL1/XTAL2 are not
used to generate the clock for the RTC/system timer.
Ground: 0 V reference.
Power supply: This is the power supply voltage for normal operation as well as
Idle and Power-down modes.
Rev. 01 — 19 November 2008
8-bit microcontroller with 8-bit ADC
P89LPC9351
© NXP B.V. 2008. All rights reserved.
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