Rochester Electronics P89LPC932A1FDH

P89LPC932A1 is a microcontroller based on a high-performance processor architecture in a low-cost package. The architecture executes instructions in 2 to 4 clock cycles, achieving six times the speed of standard 80C51 devices. The P89LPC932A1 integrates numerous system-level functions designed to reduce component count, board area, and system cost.

• 8 kB byte-erasable flash code memory, organized into 1 kB sectors and 64-byte pages. Single-byte erase allows any byte to be used as non-volatile data storage.
• 256-byte RAM data memory, 512-byte auxiliary on-chip RAM.
• 512-byte customer data EEPROM for device serialization, settings storage, etc.
• Two analog comparators with selectable inputs and reference sources.
• Two 16-bit counter/timers (each configurable to toggle a port output on timer overflow or serve as a PWM output), plus a 23-bit system timer also usable as an RTC.
• Enhanced UART with fractional baud rate generator, break detection, framing error detection, and automatic address detection; 400 kHz byte-wide I²C bus port and SPI port.
• CCU providing PWM, input capture, and output compare functions.
• High-accuracy internal RC oscillator option for operation without external oscillator components. RC oscillator option is user-selectable and trimmable.
• 2.4 V to 3.6 V VDD operating voltage range. I/O pins are 5 V tolerant (pullable or drivable to 5.5 V).
• 28-pin TSSOP, PLCC, HVQFN, and DIP packages providing a minimum of 23 and up to 26 I/O pins when using the on-chip oscillator and reset options.
• High-performance 80C51 CPU executing at 18 MHz achieves instruction cycle times of 111 ns to 222 ns for all instructions except multiply and divide — six times the performance of a standard 80C51 at the same clock frequency. Using a lower clock frequency for equivalent performance reduces power consumption and EMI.
• In-line programming enables straightforward production coding with commercial EPROM programmers. Flash security bits protect sensitive applications from readback.
• Serial flash in-system programming allows coding with the device installed in the final application.
• In-application programming of flash code memory allows code updates within a running application.
• Watchdog timer with independent on-chip oscillator requiring no external components. Watchdog prescaler selectable from eight values.
• Low-voltage reset for graceful system shutdown on power failure. Optionally configurable as an interrupt.
• Idle mode and two distinct power-down low-power modes. Improved wake-up from power-down mode (execution resumes on low-level interrupt input). Typical power-down current of 1 μA (full power-down with voltage comparator disabled).
• Active-low reset. On-chip power-on reset allows operation without external reset components. Reset counter and glitch suppression circuitry prevent spurious and incomplete resets. Software reset also supported.
• Configurable on-chip oscillator with frequency range options selected by user-programmed flash configuration bits. Oscillator options support frequencies from 20 kHz up to the maximum operating frequency of 18 MHz.
• Oscillator failure detection. The watchdog timer has a fully independent on-chip oscillator, enabling oscillator failure detection.
• Programmable port output configuration options: quasi-bidirectional, open-drain, push-pull, input-only.
• Port "input mode match" detection. Port 0 can generate an interrupt when pin values match or do not match a programmable pattern.
• All port pins are LED-capable (20 mA). Maximum limits are specified for the entire device.
• Slew-rate-controlled port outputs to reduce EMI. Outputs have a minimum ramp time of approximately 10 ns.
• P89LPC932A1 operates with only power and ground connections when the internal reset option is selected.
• Four interrupt priority levels.