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NXP Semiconductors Electronic Components Datasheet

P89LPC9402 Datasheet

8-bit Microcontroller

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P89LPC9402
8-bit microcontroller with accelerated two-clock 80C51 core
8 kB 3 V byte-erasable flash with 32 segment 4 LCD driver
Rev. 00.01 — 8 April 2009
Preliminary data sheet
1. General description
The P89LPC9402 is a multi-chip module consisting of a P89LPC931A1 single-chip
microcontroller combined with a PCF8576D universal LCD driver in a low-cost 64-pin
package. The LCD driver provides 32 segments and supports from 1 to 4 backplanes.
Display overhead is minimized by an on-chip display RAM with auto-increment
addressing.
2. Features
2.1 Principal features
„ 8 kB byte-erasable flash code memory organized into 1 kB sectors and 64-byte pages.
Single-byte erasing allows any byte(s) to be used as non-volatile data storage.
„ 256-byte RAM data memory.
„ 32 segment × 4 backplane LCD controller supports from 1 to 4 backplanes.
„ Two analog comparators with selectable inputs and reference source.
„ Two 16-bit counter/timers (each may be configured to toggle a port output upon timer
overflow or to become a PWM output).
„ A 23-bit system timer that can also be used as real-time clock consisting of a 7-bit
prescaler and a programmable and readable 16-bit timer.
„ Enhanced UART with a fractional baud rate generator, break detect, framing error
detection, and automatic address detection; 400 kHz byte-wide I2C-bus
communication port and SPI communication port.
„ 2.4 V to 3.6 V VDD operating range. I/O pins are 5 V tolerant (may be pulled up or
driven to 5.5 V).
„ Enhanced low voltage (brownout) detect allows a graceful system shutdown when
power fails.
„ 64-pin LQFP package with 20 microcontroller I/O pins minimum and up to 23
microcontroller I/O pins while using on-chip oscillator and reset options.
2.2 Additional features
„ A high performance 80C51 CPU provides instruction cycle times of 111 ns to 222 ns
for all instructions except multiply and divide when executing at 18 MHz. This is six
times the performance of the standard 80C51 running at the same clock frequency. A
lower clock frequency for the same performance results in power savings and reduced
EMI.


NXP Semiconductors Electronic Components Datasheet

P89LPC9402 Datasheet

8-bit Microcontroller

No Preview Available !

NXP Semiconductors
www.DataSheet4U.com
P89LPC9402
8-bit microcontroller with accelerated two-clock 80C51 core
„ Serial flash In-Circuit Programming (ICP) allows simple production coding with
commercial EPROM programmers. Flash security bits prevent reading of sensitive
application programs.
„ Serial flash In-System Programming (ISP) allows coding while the device is mounted
in the end application.
„ In-Application Programming (IAP) of the flash code memory. This allows changing the
code in a running application.
„ Watchdog timer with separate on-chip oscillator, nominal 400 kHz, calibrated to ±5 %,
requiring no external components. The watchdog prescaler is selectable from
eight values.
„ High-accuracy internal RC oscillator option, with clock doubler option, allows operation
without external oscillator components. The RC oscillator option is selectable and fine
tunable.
„ Switching on the fly among internal RC oscillator, watchdog oscillator, external clock
source provides optimal support of minimal power active mode with fast switching to
maximum performance.
„ Idle and two different power-down reduced power modes. Improved wake-up from
Power-down mode (a LOW interrupt input starts execution). Typical power-down
current is 1 µA (total power-down with voltage comparators disabled).
„ Active-LOW reset. On-chip power-on reset allows operation without external reset
components. A software reset function is also available.
„ Configurable on-chip oscillator with frequency range options selected by user
programmed flash configuration bits. Oscillator options support frequencies from
20 kHz to the maximum operating frequency of 18 MHz.
„ Oscillator fail detect. The watchdog timer has a separate fully on-chip oscillator
allowing it to perform an oscillator fail detect function.
„ Programmable port output configuration options: quasi-bidirectional, open drain,
push-pull, input-only.
„ High current sourcing/sinking (20 mA) on eight I/O pins (P0.3 to P0.7, P1.4, P1.6,
P1.7). All other port pins have high sinking capability (20 mA). A maximum limit is
specified for the entire chip.
„ Port ‘input pattern match’ detect. Port 0 may generate an interrupt when the value of
the pins match or do not match a programmable pattern.
„ Controlled slew rate port outputs to reduce EMI. Outputs have approximately 10 ns
minimum ramp times.
„ Only power and ground connections are required to operate the P89LPC9402 when
internal reset option is selected.
„ Four interrupt priority levels.
„ Eight keypad interrupt inputs, plus two additional external interrupt inputs.
„ Schmitt trigger port inputs.
„ Second data pointer.
„ Emulation support.
„ LED drive capability (20 mA) on all port pins. A maximum limit is specified for the
entire chip.
P89LPC9402_0.01
Preliminary data sheet
Rev. 00.01 — 8 April 2009
© NXP B.V. 2009. All rights reserved.
2 of 60


Part Number P89LPC9402
Description 8-bit Microcontroller
Maker NXP
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P89LPC9402 Datasheet PDF






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