P89LPC9401FBD,551 NXP

P89LPC9401 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable ash with 32 segment 4 LCD driver Rev. 01 5 September 2005 Preliminary data sheet 1. General description The P89LPC9401 is a multi-chip module consisting of a P89LPC931 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 ash 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 congured to toggle a port output upon timer overow or to become a PWM output) and a 23-bit system timer that can also be used as a Real-Time Clock (RTC). Enhanced UART with fractional baud rate generator, break detect, framing error 2 detection, and automatic address detection 400 kHz byte-wide I C-bus communication port and SPI communication port. High-accuracy internal RC oscillator option allows operation without external oscillator components. The RC oscillator option is selectable and ne tunable. 2.4 V to 3.6 V V operating range. I/O pins are 5 V tolerant (may be pulled up or DD driven to 5.5 V). 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. Serial ash In-Circuit Programming (ICP) allows simple production coding with commercial EPROM programmers. Flash security bits prevent reading of sensitive application programs. 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.P89LPC9401 Philips Semiconductors 8-bit two-clock 80C51 microcontroller with 32 segment 4 LCD driver Serial ash In-System Programming (ISP) allows coding while the device is mounted in the end application. In-Application Programming (IAP) of the ash code memory. This allows changing the code in a running application. Watchdog timer with separate on-chip oscillator, requiring no external components. The watchdog prescaler is selectable from eight values. Low voltage detect (brownout) allows a graceful system shutdown when power fails. May optionally be congured as an interrupt. 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 9 A typical (total power-down with voltage comparators disabled). Active-LOW reset. On-chip power-on reset allows operation without external reset components. A reset counter and reset glitch suppression circuitry prevent spurious and incomplete resets. A software reset function is also available. Congurable on-chip oscillator with frequency range options selected by user programmed ash conguration 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 conguration options: quasi-bidirectional, open drain, push-pull, input-only. 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. LED drive capability (20 mA) on all port pins. A maximum limit is specied for the entire chip. 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 P89LPC9401 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. P89LPC9401 1 Koninklijke Philips Electronics N.V. 2005. All rights reserved. Preliminary data sheet Rev. 01 5 September 2005 2 of 59