P89LPC9103FTK NXP Semiconductors, P89LPC9103FTK Datasheet - Page 28

• Manufacturer Part Number: P89LPC9103FTK
• Description: MCU 8BIT 80C51 1K FLASH, HVSON-10
• Manufacturer: NXP Semiconductors

Specifications of P89LPC9103FTK

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 8
• Program Memory Size: 1KB
• Ram Memory Size: 128Byte
• Cpu Speed: 18MHz
• Oscillator Type: Internal Only
• No. Of Timers: 4
• No. Of Pwm: RoHS Compliant

NXP Semiconductors
P89LPC9102_9103_9107_3
Product data sheet
8.5 Watchdog oscillator option
8.6 External clock input option
The watchdog timer has a separate oscillator which has a frequency of 400 kHz. This
oscillator can be used to save power when a high clock frequency is not needed.
In this configuration, the processor clock is derived from an external source driving the
P0.5/CMPREF/CLKIN pin. The rate may be from 0 Hz up to 18 MHz. The
P0.5/CMPREF/CLKIN pin may also be used as a standard port pin. When using an
oscillator frequency above 12 MHz, the reset input function of P1.5 must be
enabled. An external circuit is required to hold the device in reset at power-up until
V
below the minimum specified operating voltage. When using an oscillator
Fig 11. Block diagram of P89LPC9102 oscillator control
Fig 12. Block diagram of P89LPC9103/9107 oscillator control
DD
has reached its specified level. When system power is removed V
CLKIN
CLKIN
DOUBLER OPTION
DOUBLER OPTION
RC OSCILLATOR
RC OSCILLATOR
(7.3728 MHz or
WITH CLOCK
14.7456 MHz)
OSCILLATOR
(7.3728 MHz or
WATCHDOG
WITH CLOCK
14.7456 MHz)
OSCILLATOR
WATCHDOG
(400 kHz)
(400 kHz)
Rev. 03 — 10 July 2007
8-bit microcontrollers with two-clock accelerated 80C51 core
OSCCLK
OSCCLK
P89LPC9102/9103/9107
GENERATOR
BAUD RATE
DIVM
DIVM
CCLK
CCLK
UART
2
2
PCLK
PCLK
TIMER 0
TIMER 1
© NXP B.V. 2007. All rights reserved.
TIMER 0
TIMER 1
ADC1/
DAC1
002aaa973
WDT
ADC1/
CPU
RTC
DAC1
WDT
RTC
CPU
002aaa974
DD
will fall
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