P89LPC915_916_917 NXP Semiconductors, P89LPC915_916_917 Datasheet - Page 4

• Manufacturer Part Number: P89LPC915_916_917
• Description: The P89LPC915/916/917 are single-chip microcontrollers, available in low-cost packages,based on a high performance processor architecture that executes instructions in two tofour clocks, six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

NXP Semiconductors
5. Block diagram
P89LPC915_916_917_5
Product data sheet
Fig 1.
external clock
P89LPC915 block diagram
P1[5:0]
P0[5:0]
input
P89LPC915
OSCILLATOR DIVIDER
KEYPAD INTERRUPT
256 BYTE DATA RAM
CONFIGURABLE I/O
CONFIGURABLE I/O
WATCHDOG TIMER
2 kB CODE FLASH
AND OSCILLATOR
PROGRAMMABLE
OSCILLATOR
ON-CHIP RC
PORT 1
PORT 0
Rev. 05 — 15 December 2009
ACCELERATED 2-CLOCK 80C51 CPU
internal bus
8-bit microcontrollers with accelerated two-clock 80C51 core
HIGH PERFORMANCE
CPU clock
P89LPC915/916/917
BROWNOUT RESET)
(POWER-ON RESET,
REAL TIME CLOCK/
POWER MONITOR
COMPARATORS
SYSTEM TIMER
ADC1/DAC1
ANALOG
TIMER 0
TIMER 1
UART
I
2
C
002aaa822
© NXP B.V. 2009. All rights reserved.
TXD
RXD
SCL
SDA
AD10
AD11
AD12
AD13
DAC1
T0
CMP2
CIN2B
CIN2A
CIN1A
CIN1B
CMPREF
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